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  • 1
    Monograph available for loan
    Monograph available for loan
    Kielce : Scandinavium
    Call number: AWI P5-15-0010
    Type of Medium: Monograph available for loan
    Pages: 214 S. : graph. Darst.
    Edition: 1. ed.
    ISBN: 9788389714374
    Language: English
    Note: Contents: Introduction. - List of abbreviations. - 1. Balance of energy as a contemporary challenge. - 1.1. Energy resources and needs. - 1.2. Natural gas balance at the beginning of 21st century. - 1.3. Economic and political conditions at the European gas market. - 1.4. European Union facing the problem of energy supplies. - 2. Energy security - Norden - Basic issues. - 2.1. Subject and scope of national energy security. - 2.2. Nordic countries in international life. - 2.3. Norden and the energy issues of the Baltic states. - 2.4. Nordic countries - European Union in the context of energy security. - 3. Basic elements of the energy balance in Norden states. - 3.1. The Republic of Iceland. - 3.2. The Kingdom of Denmark. - 3.3. The Kingdom of Sweden. - 3.4. The Republic of Finland. - 4. Position of the Kingdom of Norway. - 4.1. Norway as an oil and gas producer. - 4.2. Norway in the energy balance of the region. - 4.3. High North - strategy vision and plan of Norway. - 4.4. High North - relations with the Russian Federation in the field of energy. - 5. Energy and climate - directions of activities of countries from Nordic region. - 5.1. Activities concerning energy and environmental protection and climate changes. - 5.2. Research and development - overcoming negative relations between progress and environment degradation. - 5.3. Nordic states versus contemporary energy security challenges. - Conclusion. - Literature. - List of figures and tables.
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  • 2
    Call number: AWI G2-98-0365 ; M 93.0402
    In: Contributions to sedimentology
    Type of Medium: Monograph available for loan
    Pages: IV, 210 S. : Ill., graph. Darst.
    ISBN: 3510570138
    ISSN: 0343-4125
    Series Statement: Contributions to sedimentology 13
    Classification:
    Petrology, Petrography
    Language: English
    Location: Upper compact magazine
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  • 3
    Monograph available for loan
    Monograph available for loan
    Ottawa : Geological Survey of Canada
    Associated volumes
    Call number: SR 90.0007(317) ; AWI G6-06-0042
    In: Bulletin
    Type of Medium: Monograph available for loan
    Pages: 49 S. + 4 pl.
    ISBN: 066010637X
    Series Statement: Bulletin / Geological Survey of Canada 317
    Language: English
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  • 4
    Monograph available for loan
    Monograph available for loan
    Cambridge [u.a.] : Cambridge Univ. Press
    Call number: AWI S6-14-0059 ; 2/N 14.0263
    Description / Table of Contents: "This is a hands-on guide for graduate students and other young researchers wishing to perfect the practical skills that are needed for a successful career in research. By teaching junior scientists to develop effective research habits, the book helps make the experience of graduate study a more efficient, effective and rewarding one. Many graduate students learn these skills "on the job", often by doing them poorly at first, with the result that much valuable time can be lost; this book will help prevent that. The authors have taught a graduate course on the topics covered in this book for many years, and provide a sample curriculum for instructors in graduate schools who wish to teach a similar course. ... The wealth of advice offered in this book is invaluable to students, junior researchers and their mentors in all fields of science, engineering and the humanities."
    Type of Medium: Monograph available for loan
    Pages: X, 286 S. : Ill., graph. Darst.
    Edition: 1. publ. 2009, 5th print. 2013
    ISBN: 9780521743525
    Classification:
    E.7.
    Language: English
    Note: Contents: 1 Introduction. - 2 What is science?. - 3 Choices, choices, choices. - 4 The adviser and thesis committee. - 5 Questions drive research. - 6 Giving direction to our work. - 7 Turning challenges into opportunities. - 8 Ethics of research. - 9 Using the scientific literature. - 10 Communication. - 11 Publishing a paper. - 12 Time management. - 13 Writing proposals. - 14 The scientific career. - 15 Applying for a job. - 16 Concluding remarks. - Appendix A. Futher reading. - Appendix B. A sample curriculum. - Appendix C. The Refer and BibTeX format. - References. - About the authors. - Index.
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  • 5
    Monograph available for loan
    Monograph available for loan
    New York [u.a.] : Springer
    Call number: M 93.0653 ; AWI A6-92-0220
    Type of Medium: Monograph available for loan
    Pages: xiv, 710 S.
    Edition: 2. ed., corr. 2. printing
    ISBN: 038796388X
    Classification:
    Geodynamics
    Language: English
    Note: Contents: 1 Preliminaries. - 1.1 Geophysical Fluid Dynamics. - 1.2 The Rossby Number. - 1.3 Density Stratification. - 1.4 The Equations of Motion in a Nonrotating Coordinate Frame. - 1.5 Rotating Coordinate Frames. - 1.6 Equations of Motion in a Rotating Coordinate Frame. - 1.7 Coriolis Acceleration and the Rossby Number. - 2 Fundamentals. - 2.1 Vorticity. - 2.2 The Circulation. - 2.3 Kelvin's Theorem. - 2.4 The Vorticity Equation. - 2.5 Potential Vorticity. - 2.6 The Thermal Wind. - 2.7 The Taylor-Proudman Theorem. - 2.8 Geostrophic Motion. - 2.9 Consequences of the Geostrophic and Hydrostatic Approximations. - 2.10 Geostrophic Degeneracy. - 3 lnviscid Shallow-Water Theory. - 3.1 Introduction. - 3.2 The Shallow-Water Model. - 3.3 The Shallow-Water Equations. - 3.4 Potential-Vorticity Conservation: Shallow-Water Theory. - 3.5 Integral Constraints. - 3.6 Small-Amplitude Motions. - 3.7 Linearized Geostrophic Motion. - 3.8 Plane Waves in a Layer of Constant Depth. - 3.9 Poincare and Kelvin Waves. - 3.10 The Rossby Wave. - 3.11 Dynamic Diagnosis of the Rossby Wave. - 3.12 Quasigeostrophic Scaling in Shallow-Water Theory. - 3.13 Steady Quasigeostrophic Motion. - 3.14 Inertial Boundary Currents. - 3.15 Quasigeostrophic Rossby Waves. - 3.16 The Mechanism for the Rossby Wave. - 3.17 The Beta-Plane. - 3.18 Rossby Waves in a Zonal Current. - 3.19 Group Velocity. - 3.20 The Method of Multiple Time Scales. - 3.21 Energy and Energy Flux in Rossby Waves. - 3.22 The Energy Propagation Diagram. - 3.23 Reflection and the Radiation Condition. - 3.24 Rossby Waves Produced by an Initial Disturbance. - 3.25 Quasigeostrophic Normal Modes in Closed Basins. - 3.26 Resonant Interactions. - 3.27 Energy and Enstrophy. - 3.28 Geostrophic Turbulence. - Appendix to Chapter 3. - 4 Friction and Viscous Flow. - 4.1 Introduction. - 4.2 Turbulent Reynolds Stresses. - 4.3 The Ekman Layer. - 4.4 The Nature of Nearly Frictionless Flow. - 4.5 Boundary-Layer Theory. - 4.6 Quasigeostrophic Dynamics in the Presence of Friction. - 4.7 Spin-Down. - 4.8 Steady Motion. - 4.9 Ekman Layer on a Sloping Surface. - 4.10 Ekman Layer on a Free Surface. - 4.11 Quasigeostrophic Potential Vorticity Equation with Friction and Topography. - 4.12 The Decay of a Rossby Wave. - 4.13 Side-Wall Friction Layers. - 4.14 The Dissipation of Ens trophy in Geostrophic Turbulence. - 5 Homogeneous Models of the Wind-Driven Oceanic Circulation. - 5.1 Introduction. - 5.2 The Homogeneous Model. - 5.3 The Sverdrup Relation. - 5.4 Meridional Boundary Layers: the Munk Layer. - 5.5 Stommel's Model: Bottom Friction Layer. - 5.6 Inertial Boundary-Layer Theory. - 5.7 Inertial Currents in the Presence of Friction. - 5.8 Rossby Waves and the Westward Intensification of the Oceanic Circulation. - 5.9 Dissipation Integrals for Steady Circulations. - 5.10 Free Inertial Modes. - 5.11 Numerical Experiments. - 5.12 Ekman Upwelling Circulations. - 5.13 The Effect of Bottom Topography. - 5.14 Concluding Remarks on the Homogeneous Model. - 6 Quasigeostrophic Motion of a Stratified Fluid on a Sphere. - 6.1 Introduction. - 6.2 The Equations of Motion in Spherical Coordinates: Scaling. - 6.3 Geostrophic Approximation: ε = O(L/r0 ) ≪ 1. - 6.4 The Concept of Static Stability. - 6.5 Quasigeostrophic Potential-Vorticity Equation for Atmospheric Synoptic Scales. - 6.6 The Ekman Layer in a Stratified Fluid. - 6.7 Boundary Conditions for the Potential-Vorticity Equation: the Atmosphere. - 6.8 Quasigeostrophic Potential-Vorticity Equation for Oceanic Synoptic Scales. - 6.9 Boundary Conditions for the Potential-Vorticity Equation: the Oceans. - 6.10 Geostrophic Energy Equation and Available Potential Energy. - 6.11 Rossby Waves in a Stratified Fluid. - 6.12 Rossby-Wave Normal Modes: the Vertical Structure Equation. - 6.13 Forced Stationary Waves in the Atmosphere. - 6.14 Wave-Zonal Flow Interactions. - 6.15 Topographic Waves in a Stratified Ocean. - 6.16 Layer Models. - 6.17 Rossby Waves in the Two-Layer Model. - 6.18 The Relationship of the Layer Models to the "Level" Models. - 6.19 Geostrophic Approximation ε ≪ L/r0 〈 1; the Sverdrup Relation. - 6.20 Geostrophic Approximation ε ≪ 1, L/r0 = O(1). - 6.21 The Thermocline Problem. - 6.22 Layer Models of the Thermocline. - 6.23 Flow in Unventilated Layers: Potential Vorticity Homogenization. - 6.24 Quasigeostrophic Approximation: an Alternative Derivation. - 7 Instability Theory. - 7.1 Introduction. - 7.2 Formulation of the Instability Problem: the Continuously Stratified Model. - 7.3 The Linear Stability Problem: Conditions for Instability. - 7.4 Normal Modes. - 7.5 Bounds on the Phase Speed and Growth Rate. - 7.6 Baroclinic Instability: the Basic Mechanism. - 7.7 Eady's Model. - 7.8 Charney's Model and Critical Layers. - 7.9 Instability in the Two-Layer Model: Formulation. - 7.10 Normal Modes in the Two-Layer Model: Necessary Conditions for Instability. - 7.11 Baroclinic Instability in the Two-Layer Model: Phillips' Model. - 7.12 Effects of Friction. - 7.13 Baroclinic Instability of Nonzonal Flows. - 7.14 Barotropic Instability. - 7.15 Instability of Currents with Horizontal and Vertical Shear. - 7.16 Nonlinear Theory of Baroclinic Instability. - 7.17 Instability of Non parallel Flow. - 8 Ageostrophic Motion. - 8.1 Anisotropic Scales. - 8.2 Continental-Shelf Waves. - 8.3 Slow Circulation of a Stratified, Dissipative Fluid. - 8.4 The Theory of Frontogenesis. - 8.5 Equatorial Waves. - Selected Bibliography. - Index.
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  • 6
    Monograph available for loan
    Monograph available for loan
    New York, N.Y. : Van Nostrand Reinhold
    Associated volumes
    Call number: Q 3473 (85)
    In: Benchmark papers in geology
    Type of Medium: Monograph available for loan
    Pages: 419 S.
    ISBN: 0442237022
    Series Statement: Benchmark papers in geology 85
    Language: English
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  • 7
    Monograph available for loan
    Monograph available for loan
    Madison, Wisconsin [u.a.] : Science Tech Publ. [u.a.]
    Call number: M 93.0655 ; AWI E1-88-0673
    Type of Medium: Monograph available for loan
    Pages: XX, 241 S. , Ill. , 24 cm
    ISBN: 0-910239-03-7 , 3-540-17310-2
    Series Statement: Scientific revolutionaries : a biographical series
    Uniform Title: Alfred Wegener und die Drift der Kontinente
    Classification:
    A.0.9.
    Language: English
    Location: Upper compact magazine
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  • 8
    Monograph available for loan
    Monograph available for loan
    Amsterdam [u.a.] : Elsevier
    Associated volumes
    Call number: G 9086/3A ; AWI G6-92-0231
    In: Handbook of environmental isotope geochemistry
    Type of Medium: Monograph available for loan
    Pages: VII, 428 S. : Ill.
    ISBN: 0444427643
    Language: English
    Location: Upper compact magazine
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  • 9
    Monograph available for loan
    Monograph available for loan
    Associated volumes
    Call number: M 92.1188 ; AWI G6-92-0230
    In: Handbook of environmental isotope geochemistry
    Description / Table of Contents: Contents: Preface. - List of contributors. - 1. Mathematical models for the interpretation of environmental radioisotopes in groundwater systems. - 2. Isotopes in cloud physics: multiphase and multistage condensation processes. - 3. Environmental isotopes in lake studies. - 4. Environmental isotope and anthropogenic tracers of recent lake sedimentation. - 5. Stable isotope geochemistry of travertines. - 6. Isotope geochemistry of carbonates in the weathering zone. - 7. Geochronology and isotopic geochemistry of speleothems. - 8. Oxygen and hydrogen isotope geochemistry of deep basin brines. - 9. Isotope effects of nitrogen in the soil and biosphere. - 10. Chlorine-36 in the terrestrial environment. - 11. Radioactive noble gases in the terrestrial environment. - 12. Isotopes and food.
    Type of Medium: Monograph available for loan
    Pages: XI, 557 S. : Ill.
    ISBN: 0444422250
    Classification:
    Geochemistry
    Language: English
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  • 10
    Monograph available for loan
    Monograph available for loan
    Berlin [u.a.] : Springer
    Call number: M 92.0939 ; M 92.1193 ; AWI G1-92-0382
    Type of Medium: Monograph available for loan
    Pages: XIV, 472 S.
    ISBN: 3540513418
    Classification:
    Petrology, Petrography
    Language: English
    Location: Upper compact magazine
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  • 11
    Call number: M 92.0464 ; AWI A17-97-0414
    In: Proceedings of the International School of Physics Enrico Fermi
    Type of Medium: Monograph available for loan
    Pages: XXI, 449 S.
    ISBN: 0444869360
    Series Statement: Proceedings of the International School of Physics "Enrico Fermi" course 88
    Classification:
    Geodynamics
    Language: English
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  • 12
    Monograph available for loan
    Monograph available for loan
    Associated volumes
    Call number: 9/G 9184 ; AWI G3-92-0227
    In: Diagenesis
    Type of Medium: Monograph available for loan
    Pages: XII, 591 S. : graph. Darst.
    ISBN: 0444427201
    Series Statement: 41
    Language: English
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  • 13
    Series available for loan
    Series available for loan
    Hannover : Schweizerbart
    Associated volumes
    Call number: SR 99.0054(41) ; ZSP-320(B,41)
    In: Geologisches Jahrbuch
    Type of Medium: Series available for loan
    Pages: 276 S. + 1 Kt.-Beil.
    Series Statement: Geologisches Jahrbuch : Reihe B 41
    Language: English
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  • 14
    Call number: SR 99.0054(60) ; ZSP-320(B,60)
    In: German Antarctic North Victoria Land Expedition 1982/83
    In: Geologisches Jahrbuch
    Type of Medium: Series available for loan
    Pages: 399 S.
    Series Statement: Geologisches Jahrbuch; Reihe B 60
    Language: English
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  • 15
    Call number: SR 99.0054(66) ; ZSP-320(B,66)
    In: German Antarctic North Victoria Land Expedition 1982/83
    In: Geologisches Jahrbuch
    Type of Medium: Series available for loan
    Pages: 321 S. + 2 Kt.-Beil.
    Series Statement: 66
    Language: English
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  • 16
    Monograph available for loan
    Monograph available for loan
    San Diego : Academic Press
    Associated volumes
    Call number: 5/M 92.0428 ; AWI S2-95-0210
    In: International geophysics series, Volume 45
    Type of Medium: Monograph available for loan
    Pages: xii, 289 Seiten , Illustrationen
    Edition: revised edition
    ISBN: 0124909213 , 0-12-490921-3
    Series Statement: International geophysics series 45
    Classification:
    A.2.1.
    Language: English
    Note: CONTENTS: PREFACE. - INTRODUCTION. - 1 DESCRIBING INVERSE PROBLEMS. - 1.1 Formulating Inverse Problems. - 1.2 The Linear Inverse Problem. - 1.3 Examples of Formulating Inverse Problems. - 1.4 Solutions to Inverse Problems. - 2 SOME COMMENTS ON PROBABILITY THEORY. - 2.1 Noise and Random Variables. - 2.2 Correlated Data. - 2.3 Functions of Random Variables. - 2.4 Gaussian Distributions. - 2.5 Testing the Assumption of Gaussian Statistics. - 2.6 Confidence Intervals. - 3 SOLUTION OF THE LINEAR, GAUSSIAN INVERSE PROBLEM, VIEWPOINT 1: THE LENGTH METHOD. - 3.1 The Lengths of Estimates. - 3.2 Measures of Length. - 3.3 Least Squares for a Straight Line. - 3.4 The Least Squares Solution of the Linear Inverse Problem. - 3.5 Some Examples. - 3.6 The Existence of the Least Squares Solution. - 3.7 The Purely Underdetermined Problem. - 3.8 Mixed-Determined Problems. - 3.9 Weighted Measures of Length as a Type of A Priori Information. - 3.10 Other Types of A Priori Information. - 3.11 The Variance of the Model Parameter Estimates. - 3.12 Variance and Prediction Error of the Least Squares Solution. - 4 SOLUTION OF THE LINEAR, GAUSSIAN INVERSE PROBLEM, VIEWPOINT 2: GENERALIZED INVERSES. - 4.1 Solutions versus Operators. - 4.2 The Data Resolution Matrix. - 4.3 The Model Resolution Matrix. - 4.4 The Unit Covariance Matrix. - 4.5 Resolution and Covariance of Some Generalized Inverses. - 4.6 Measures of Goodness of Resolution and Covariance. - 4.7 Generalized Inverses with Good Resolution and Covariance. - 4.8 Sidelobes and the Backus-Gilbert Spread Function. - 4.9 The Backus-Gilbert Generalized Inverse for the Underdetermined Problem. - 4.10 Including the Covariance Size. - 4.11 The Trade-off of Resolution and Variance. - 5 SOLUTION OF THE LINEAR, GAUSSIAN INVERSE PROBLEM, VIEWPOINT 3: MAXIMUM LIKELIHOOD METHODS. - 5.1 The Mean of a Group of Measurements. - 5.2 Maximum Likelihood Solution of the Linear Inverse Problem. - 5.3 A Priori Distributions. - 5.4 Maximum Likelihood for an Exact Theory. - 5.5 Inexact Theories. - 5.6 The Simple Gaussian Case with a Linear Theory. - 5.7 The General Linear, Gaussian Case. - 5.8 Equivalence of the Three Viewpoints. - 5.9 The F Test of Error Improvement Significance. - 5.10 Derivation of the Formulas of Section 5.7. - 6 NONUNIQUENESS AND LOCALIZED AVERAGES. - 6.1 Null Vectors and Nonuniqueness. - 6.2 Null Vectors of a Simple Inverse Problem. - 6.3 Localized Averages of Model Parameters. - 6.4 Relationship to the Resolution Matrix. - 6.5 Averages versus Estimates. - 6.6 Nonunique Averaging Vectors and A Priori Information. - 7 APPLICATIONS OF VECTOR SPACES. - 7.1 Model and Data Spaces. - 7.2 Householder Transformations. - 7.3 Designing Householder Transformations. - 7.4 Transformations That Do Not Preserve Length. - 7.5 The Solution of the Mixed-Determined Problem. - 7.6 Singular-Value Decomposition and the Natural Generalized Inverse. - 7.7 Derivation of the Singular-Value Decomposition. - 7.8 Simplifying Linear Equality and Inequality Constraints. - 7.9 Inequality Constraints. - 8 LINEAR INVERSE PROBLEMS AND NON-GAUSSIAN DISTRIBUTIONS. - 8.1 L1 Norms and Exponential Distributions. - 8.2 Maximum Likelihood Estimate of the Mean of an Exponential Distribution. - 8.3 The General Linear Problem. - 8.4 Solving L1 Norm Problems. - 8.5 The L [Infinity symbol] Norm. - 9 NONLINEAR INVERSE PROBLEMS. - 9.1 Parameterizations. - 9.2 Linearizing Parameterizations. - 9.3 The Nonlinear Inverse Problem with Gaussian Data. - 9.4 Special Cases. - 9.5 Convergence and Nonuniqueness of Nonlinear L2 Problems. - 9.6 Non-Gaussian Distributions. - 9.7 Maximum Entropy Methods. - 10 FACTOR ANALYSIS. - 10.1 The Factor Analysis Problem. - 10.2 Normalization and Physicality Constraints. - 10.3 Q-Mode and R-Mode Factor Analysis. - 10.4 Empirical Orthogonal Function Analysis. - 11 CONTINUOUS INVERSE THEORY AND TOMOGRAPHY. - 11.1 The Backus-Gilbert Inverse Problem. - 11.2 Resolution and Variance Trade-off. - 11.3 Approximating Continuous Inverse Problems as Discrete Problems. - 11.4 Tomography and Continuous Inverse Theory. - 11.5 Tomography and the Radon Transform. - 11.6 The Fourier Slice Theorem. - 11.7 Backprojection. - 12 SAMPLE INVERSE PROBLEMS. - 12.1 An Image Enhancement Problem. - 12.2 Digital Filter Design. - 12.3 Adjustment of Crossover Errors. - 12.4 An Acoustic Tomography Problem. - 12.5 Temperature Distribution in an Igneous Intrusion. - 12.6 L1, L2, and L [infinity symbol] Fitting of a Straight Line. - 12.7 Finding the Mean of a Set of Unit Vectors. - 12.8 Gaussian Curve Fitting. - 12.9 Earthquake Location. - 12.10 Vibrational Problems. - 13 NUMERICAL ALGORITHMS. - 13.1 Solving Even-Determined Problems. - 13.2 Inverting a Square Matrix. - 13.3 Solving Underdetermined and Overdetermined Problems. - 13.4 L2 Problems with Inequality Constraints. - 13.5 Finding the Eigenvalues and Eigenvectors of a Real Symmetric Matrix. - 13.6 The Singular-Value Decomposition of a Matrix. - 13.7 The Simplex Method and the Linear Programming Problem. - 14 APPLICATIONS OF INVERSE THEORY TO GEOPHYSICS. - 14.1 Earthquake Location and the Determination of the Velocity Structure of the Earth from Travel Time Data. - 14.2 Velocity Structure from Free Oscillations and Seismic Surface Waves. - 14.3 Seismic Attenuation. - 14.4 Signal Correlation. - 14.5 Tectonic Plate Motions. - 14.6 Gravity and Geomagnetism. - 14.7 Electromagnetic Induction and the Magnetotelluric Method. - 14.8 Ocean Circulation. - APPENDIX A: Implementing Constraints with Lagrange Multipliers. - APPENDIX B: L2 Inverse Theory with Complex Quantities. - REFERENCES. - INDEX
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  • 17
    Call number: 92.1182 ; AWI A3-88-0317
    Type of Medium: Monograph available for loan
    Pages: VII, 205 S. : graph. Darst.
    ISBN: 9027716765
    Classification:
    Historical Geology
    Language: English
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  • 18
    Monograph available for loan
    Monograph available for loan
    Oxford [u.a.] : Oxford University Press
    Call number: 19/M 01.0246 ; PIK N 400-99-0108 ; AWI S2-97-0303
    Description / Table of Contents: Contents: 1. Introduction. - 2. Univariate Description. - 3. Bivariate Description. - 4. Spatial Description. - 5. The Exhaustive Dataset. - 6. The Sample Data Set. - 7. The Sample Data Set: Spatial Continuity. - 8. Estimation. - 9. Random Function Models. - 10. Global Estimation. - 11. Point Estimation. - 12. Ordinary Kriging. - 13. Block Kriging. - 14. Search Strategy. - 15. Cross Validation. - 16. Modelling the Sample Variogram. - 17. Cokriging. - 18. Estimating a Distribution. - 19. Change of Support. - 20. Assessing Uncertainty. - 21. Final Thoughts. - Bibliography. - A The Walker Lake Data Sets. - B Continous Random Variables. - Index.
    Type of Medium: Monograph available for loan
    Pages: XIX, 561 S.
    ISBN: 0195050134
    Classification:
    Mathematical Geology
    Language: English
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  • 19
    Call number: AWI P6-19-92192
    Type of Medium: Monograph available for loan
    Pages: 266 Seiten , Illustrationen
    Language: Bulgarian , English
    Note: CONTENTS: The Antarctic - Present and future / V. Zahariev. - The ice cover and the atmospheric CO2 / K. S. Losev. - 30 Years Research Activities of the German Democratic Republic in the Antarctic / D. Fritzsche. - The bulgarian antarctic society "Antarctica" - aims, activity and prospects in the future / S. Popov. - Features of the Antarctic climate / V. Zahariev, E. Koleva, R. Stoynova. - Features of the atmosphere circulation over the Antarctic continent / V. Zahariev, L. Kristev. - Ice covering of the Antarctuc continent / V. Zahariev, L. Kristev. - Temperature conditions in the Antarctic continent / V. Zahariev, L. Kristev . - Modeling the thermali convection of the Antarctic continent / S. Stoyanov, V. Zahariev. - Gamma locator for investigation of local sources of space photons with ultra high energies / I. Kirov, J. Stamenov, S. Ushev, V. Ianminchev. - Measurements of aerosols in the coastal sone of the Antarctic continent / N. Mihnevsky, K. Velchev. - Defining antropogenic in the show sample collected from the Antarctic continent / L. Adjarova, A. Antonov, N. Mihnevsky. - Ozone holes in the Antarctic / C. Gogosheva. - Measurements of the entire ozone content during the 17th Antarctic trip of the soviet research ship "Michail Somov" / N. Nihnevsky, P. Videnov. - Problems on the polar atmospere and magnetosphere / M. Gogoshev. - On some geomagnetic phenomena / P. Ivanova. - Spectroscopic measurements of small gas quantities in the atmosphere / S. Bogdanov, P. Videnov. - An investigation of electrical properties of the water-ice phase transition for purposes of remote sensing in Antarctic / St. Kolev. - Influence of the thermodinamic interaction in the atmosphere on the ice conditions of the world ocean surface / G. Korchev, A. Korcheva. - Participation of the Bulgarian group in the 33th soviet Antarctic expedition in season 1987/1988 / Z. Vergilov, S. Kaloyanov, N. Mihnevsky, A. Chakirov. - Reconnaissance investigation of the north part of Alexander I island / N. Mihnevsky, Z. Vergilov, S. Kaloyanov, A. Chakirov. - Finding a suitable place for the experimental buildings and mounting them on Livingston island / A. Chakirov, Z. Vergilov, S. Kaloyanov, N. Mihnevsky. - Energetic requirements, energy sources, water supply, transport machinery and building works for the Antarctic scientific stations / A. Chakirov. - Ice conditions and possibilities for navigation in the areas of the islands Alexander I and Livingston / S. Kaloyanov, Z. Vergilov, N. Mihnevsky, A. Chakirov. - Portable automatic meteorological station based on a aerological sonde / H. Brinsov. - Automatic data asquisition system with battery supply for operation in heavy weather conditions / S. Kaloyanov. - Automatic observations on the propagation of the short weves / S. Kaloyanov. - The possibility for utilizing of thermal pumps in polar conditions / S. Todorov, V. Stoyanov, G. Dineva, K. Grancharov. - Working fluids in the hidraulic systems operating in polar conditions / S. Todorov, K. Grancharov, G. Dineva. - Investigation of the operation processes of diesel engines operating electric generators in polar condition / V. H. Janakiev, I. E. Ivanov, E. A. Iliev. - Some problems of human adaptation to the cold in Subantarctic / A. Ketkin. - The first geological research activities of Bulgaria in Antarctic - some new data and preliminary conclusions Alexander Island, West Antarctica / B. Kamenov, B. H. Pimpirev. - A satellite ozonometric apparatus for atmospheric ozone monitoring above the Antarctic / J. St. Jekov, K. D. Valtchev, D. Chr. Ivanova. - Measuring the total ozone content above the Antarctic with the aid of artificial earth satellite / D. Hr. Ivanova, J. St. Jekov. , In kyrillischer Schrift , Beiträge teilweise in englischer, teilweise in bulgarischer Sprache , Mit englischem Inhaltsverzeichnis
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  • 20
    Call number: AWI NBM-17-90885
    Description / Table of Contents: While researching for another film, filmmakers Tom Radford and Peter Raymont came across the story of Nugliak, an Inuvialuit man born just before the end of the 19th century who observed and wrote of the changes that occurred in the north during his lifetime on Herschel Island. Radford's film loosely follows the book, touching on much the same subjects, but using Nugliak's descendents as a link to the present.
    Description / Table of Contents: It is easy to overlook Herschel Island - a tiny speck of land just off the Yukon coast - where the Inuvialuit hunter Nuligak once followed the great journeys of caribou, polar bears, and whales. The island lays silently on the margins of geography, entrapped in the footnotes of history, a forgotten place frozen in time. And yet just over a century ago Herschel Island was a frontier boomtown, branded "the Sodom of the Arctic" by some visitors at the time. A place cohabited by whalers, Inuit, missionaries, and police; a place of contact and conflict; a place where worlds collided and lives were changed forever. It was on Herschel Island that a young Inucialuit boy, Nuligak (later named Bob Cockney by the missionaries) came of age - fascinated by Herschel, but equally repelled by the excess of so-called civilization. Through Nuligak's touching yet tragic life-story expressed through his writings and echoed by his grandchildren's poignant return to the Island - we are offered a unique view into an often troubling past and a potentially hopeful future.
    Type of Medium: Non-book medium
    Pages: 1 videodisc , round, color and black and white ; 4 3/4 in , 116 min. (70 min. + 46 min.)
    Language: English
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  • 21
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/27
    In: CRREL Report, 82-27
    Description / Table of Contents: Recommendations for economical thicknesses for building insulation result from a study of fuel and construction costs of 12 military installations in Alaska. A comparison between the insulation thickness that a building owner might choose today and what he might choose in 20 years indicates a trend for much thicker insulation in the future. An analysis of how much more expensive a building built today with the thickness that would be appropriate 20 years hence indicates only a small penalty in life-cycle costs for the additional insulation. Therefore, a minimum of R-32 walls and R-62 attics is recommended for most of Alaska.
    Type of Medium: Series available for loan
    Pages: 54 Seiten , Illustrationen
    Series Statement: CRREL Report 82-27
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors Summary Introduction Determining economic thicknesses for insulation Background Analysis method for new construction Analysis method for reinsulating existing construction Sensitivity and longevity of the results Sensitivity Longevity Recommendations Saving money vs. saving energy Energy economics conservation Building energy performance standards Conclusion Literature cited Appendix A: Heating system costs Appendix B: Present worth factors Appendix C: Base case and incremental thermal properties Appendix D: LCC comparison graphs for wall and roof systems Appendix E: Cost penalties for energy conservatism Appendix F: Graphic aid for figuring energy savings thermal improvements
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  • 22
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-84/26
    In: CRREL Report, 84-26
    Description / Table of Contents: Observations of shore ice pile-up and ride-up along the Alaska Beaufort Sea coast in 1983 and 1984 are presented. New information on historical accounts of onshore ice movement, uncovered since publication of Part I in this series, is reported. An account is given of ice overtopping a concrete caisson exploration island in the Canadian Beaufort Sea.
    Type of Medium: Series available for loan
    Pages: iii, 33 Seiten , Illustrationen
    Series Statement: CRREL Report 84-26
    Language: English
    Note: CONTENTS Abstract Preface Introduction Observations Discussion Literature cited Appendix A: Site location maps
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  • 23
    Call number: ZSP-201-86/12
    In: CRREL Report, 86-12
    Description / Table of Contents: Stress-deformation data for six granular soils ranging from sandy silt to dense-graded crushed stone were obtained from in-situ tests and laboratory tests. Surface deflections were measured in the in-situ tests, with repeated-load plate-bearing and falling-weight deflectometer equipment, when the six granular soils were frozen, thawed, and at various stages of recovery from thaw weakening. The measured deflections were used to judge the validity of procedures developed for laboratory triaxial tests to determine nonlinear resilient moduli of specimens in the frozen, thawed, and recovering states. The validity of the nonlinear resilient moduli, expressed as functions of externally applied stress and moisture tension, was confirmed by using the expressions to calculate surface deflections that were found to compare well with deflections measured in the in-situ tests. The tests on specimens at various stages of recovery are especially significant because they show a strong dependence of the resilient modulus on moisture tension, leading to the conclusion that predictions or in-situ measurements of moisture tension can be used to evaluate expected seasonal variation in the resilient modulus of granular soils.
    Type of Medium: Series available for loan
    Pages: v, 70 Seiten , Illustrationen
    Series Statement: CRREL Report 86-12
    Language: English
    Note: CONTENTS Abstract Preface Introduction Sampling of test section Laboratory tests Asphalt concrete Natural subgrade material Test soils Field tests Analysis of field-loading tests Discussion Conclusions Literature cited Appendix A: Field data Appendix 8: Ground temperatures prevailing during plate-loading tests Appendix C: Measured surface deflections compared with deflections calculated by NELAPAV Appendix D: Resilient moduli and supporting data calculated by NELAPAV
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  • 24
    Call number: ZSP-201-86/13
    In: CRREL Report, 86-13
    Description / Table of Contents: Stress-deformation data for six granular soils ranging from sandy silt to dense-graded crushedstone were obtained from in-situ tests and laboratory tests. Surface deflections were measured in the in-situ tests, with repeated-load plate-bearing and falling-weight deflectometer equipment, when the six granular soils were frozen, thawed, and at various stages of recovery from thaw weakening. The measured deflections were used to judge the validity of procedures developed for laboratory triaxial tests to determine nonlinear resilient moduli of specimens in the frozen, thawed, and recovering states. The validity of the nonlinear resilient moduli, expressed as functions of externally applied stress and moisture tension, was confirmed by using the expressions tocalculate surface deflections that were found to compare well with deflections measured in the in-situ tests. The tests on specimens at various stages of recovery are especially significant because they show a strong dependence of the resilient modulus on moisture tension, leading to the conclusion that predictions or in-situ measurements of moisture tension can be used to evaluate expected seasonal variation in the resilient modulus of granular soils.
    Type of Medium: Series available for loan
    Pages: iv, 148 Seiten , Illustrationen
    Series Statement: CRREL Report 86-13
    Language: English
    Note: CONTENTS Abstract Preface Introduction Test sections Installing instruments and sampling Laboratory tests Asphalt concrete Base, subbase and subgrade soils Data analysis for base, subbase and subgrade soils Field tests Analysis of plate loading tests Analytical approach Results Discussion Conclusions Literature cited Appendix A: Field data Appendix B: Ground temperatures, moisture tension, water table and freezing iso-therms prevailing during plate loading tests Appendix C: Measured surface deflections compared with deflections calculated by NELAPAV Appendix D: Resilient moduli and supporting data calculated by NELAPA V at radius 0.0, taxiways A and B.
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  • 25
    Monograph available for loan
    Monograph available for loan
    Kyoto : International Research Center for Japanese Studies
    Associated volumes
    Call number: AWI Bio-18-91448
    In: The pollen flora of Yunnan, China, Vol. 1
    Description / Table of Contents: The Pollen Flora of Yunnan, China is the first book of the series of pollen morphological studies of tree plants growing in the wild in the Yunnan Province and in the surrounding area of China: Asian Environmental History. The series will present the first detailed work on the pollen flora of China. This book includes electron microscope photographs and light micrographs of 67 species of Gymnosperm, Myricaceae and Juglandaceae and can be used for research on many areas including pollen analysis and plant taxonomy.
    Type of Medium: Monograph available for loan
    Pages: 144 S.
    ISBN: 8174363416
    Series Statement: Asian Environmental History 1
    Language: English
    Note: Contents: Preface. - Introduction. - Gymnosperm. - Pinaceae. - Taxodiaceae. - Cupressaceae. - Podocarpaceae. - Ephedraceae. - Angiosperm. - Juglandaceae. - Myricaceae. - Bibliography. - Plates. - Gymnosperm. - Pinaceae: Plates 1-23. - Taxodiaceae: Plates 24-26. - Cupressaceae: Plates 27-39. - Podocarpaceae: Plates 40-46. - Ephedraceae: Plates 47-52. - Angiosperm. - Juglandaceae: Plates 53-64. - Myricaceae: Plates 64-68. - Pollen Sample List. - Index.
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  • 26
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/17
    In: CRREL Report, 82-17
    Description / Table of Contents: Seismic P and SH wave refraction experiments at the NATO RSG-11 test site in Munster Nord, Federal Republic of Germany, reveal the presence of a nearly horizontal, three-layer velocity structure. The upper layer, composed of un­consolidated glacial till, is 1 m thick and has P (compressional) and SH (shear-horizontal) wave velocities of 240 and 165 m s-1. The second layer, made up of similar, more compacted material, is 9.5 m thick, with a P wave velocity of 470 m s-1 and an SH wave velocity of 275 m s-1. The third layer, interpreted as the groundwater table, is located at a depth of 10.5 m and has a P wave velocity of 1590 m s-1. The SH wave velocity of this layer is controlled by the matrix material and is the same as that of the second layer. A single, unreversed observation indicated a fourth layer at a depth of about 20 m, but the existence of this layer remains unconfirmed. The observed fundamental mode Love wave dispersion is in agreement with the theoretical dispersion predicted by the refraction velocities. Computed partial derivatives of phase velocity with respect to shear wave velocity show, for the frequencies observed, that the dispersion confirms the thicknesses and velocities of the two upper layers and is not affected by the deeper structure.
    Type of Medium: Series available for loan
    Pages: iv, 33 Seiten , Illustrationen
    Series Statement: CRREL Report 82-17
    Language: English
    Note: CONTENTS Abstract Preface Introduction Refraction experiments Procedure Equipment Results P waves Low velocity zone SH waves Surface wave experiments Summary and discussion Literature cited Appendix A: P wave refraction data Appendix B: SH wave refraction data. Appendix C: Surface wave dispersion calculations
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  • 27
    Call number: ZSP-201-82/15
    In: CRREL Report, 82-15
    Description / Table of Contents: An experiment is described that demonstrates the balance between the ice and the unfrozen water in a frozen soil as water is removed. Nuclear magnetic resonance (NMR) is used to monitor the unfrozen water content as the soil is dehydrated by a molecular sieve material. Our results show that the unfrozen water content of a Morin clay soil remains constant until the total water content has been reduced to the point where no ice remains in the system. Once the ice is depleted, the unfrozen water content determined by NMR corresponds to the total water content of the soil determined by the weight of water removed by the molecular sieve material. Thus the validity of utilizing NMR in determining unfrozen water contents vs temperature is established.
    Type of Medium: Series available for loan
    Pages: 8 Seiten , Illustrationen
    Series Statement: CRREL Report 82-15
    Language: English
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  • 28
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/16
    In: CRREL Report, 82-16
    Description / Table of Contents: Abstract: A dynamic-thermodynamic sea ice model which employs a viscous-plastic constitutive law has been applied to the East Greenland area. The model is run on a 40-km spatial scale at 1/4-day time steps for a 60-day period with forcing data beginning on 1 October 1979. Results tend to verify that the model predicts reasonable thicknesses and velocities within the ice margin. Thermodynamic ice growth produces excessive ice extent, however, probably due to inadequate parameterization of oceanic heat flux. Ice velocities near the free ice edge are also not well simulated, and preliminary investigations attribute this to an improper wind field in this area. A simulation which neglects ice strength, effectively damping ice interaction with itself and allowing no resistance to deformation, produces excessive ice drift toward the coast and results in unrealistic nearshore thicknesses. A dynamics-only simulation produced reasonable results, including a more realistic ice extent, but the need for proper thermodynamics is also apparent. Other simulations verify that ice import from the Arctic Basin, and ice transport due to winds and currents, were also important components in the model studies.
    Type of Medium: Series available for loan
    Pages: v, 40 Seiten , Illustrationen , 29 cm
    Series Statement: CRREL Report 82-16
    Language: English
    Note: CONTENTS Abstract Preface Introduction Model description and application Results and discussion Wind and current fields Standard simulation Thermodynamic simulation Zero ice strength Zero ice import Zero currents Modified currents Zero winds Dynamics simulation Summary and concluding remarks Literature cite
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  • 29
    Call number: ZSP-994
    Type of Medium: Series available for loan
    Pages: 21 x 21 cm
    ISSN: 1618-3703
    Former Title: Vorgänger: Zweijahresbericht / Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung
    Subsequent Title: Fortsetzung Zweijahresbericht ... / AWI, Alfred-Wegener-Institut für Polar- und Meeresforschung in der Helmholtz-Gemeinschaft
    Language: German , English
    Note: Erscheint alle 2 Jahre , Text in deutscher und englischer Sprache
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  • 30
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/32
    In: CRREL Report, 82-32
    Description / Table of Contents: Low-frequency (10 Hz) volcanic earthquakes originate at a wide range of depths and occur before, during, and after magmatic eruptions. The characteristics of these earthquakes suggest that they are not typical tectonic events. Physically analogous processes occur in hydraulic fracturing of rock formations, low-frequency icequakes in temperate glaciers, and autoresonance in hydroelectric power stations. We propose that unsteady fluid flow in volcanic conduits is the common source mechanism of low-frequency volcanic earthquakes (tremor). The fluid dynamic source mechanism explains low-frequency earthquakes of arbitrary duration, magnitude, and depth of origin, as unsteady flow is independent of physical properties of the fluid and conduit. Fluid transients occur in both low-viscosity gases and high-viscosity liquids. A fluid transient analysis can be formulated as generally as is warranted by knowledge of the composition and physical properties of the fluid, material properties, geometry and roughness of the conduit, and boundary conditions. To demonstrate the analytical potential of the fluid dynamic theory, we consider a single-phase fluid, a melt of Mount Hood andeside at 1250 deg C, in which significant pressure and velocity variations occur only in the longitudinal direction.
    Type of Medium: Series available for loan
    Pages: 15 Seiten , Illustrationen
    Series Statement: CRREL Report 82-32
    Language: English
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  • 31
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/33
    In: CRREL Report, 82-33
    Description / Table of Contents: Arctic sea ice is freckled with melt ponds during the ablation season; Antarctic sea ice has few, if any. On the basis of a simple surface heat budget, we investigate the meteorological conditions necessary for the onset of surface melting in an attempt to explain these observations. The low relative humidity associated with the relatively dry winds off the continent and an effective radiation parameter smaller than that characteristic of the Arctic are primarily responsible for the absence of melt features in the Antarctic. Together these require a surface-layer air temperature above 0 C before Antarctic sea ice can melt. A ratio of the bulk transfer coefficients C sub H/C sub E less than 1 also contributes to the dissimilarity in Arctic and Antarctic ablation seasons. The effects of wind speed and of the sea-ice roughness on the absolute values of C sub H and C sub E seem to moderate regional differences, but final assessment of this hypothesis awaits better data, especially from the Antarctic.
    Type of Medium: Series available for loan
    Pages: 16 Seiten , Illustrationen
    Series Statement: CRREL Report 82-33
    Language: English
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  • 32
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/34
    In: CRREL Report, 82-34
    Description / Table of Contents: The ice discharge through an opening in an ice control structure was documented to be a function of the floe size, ice type, ice floe conditions and vessel direction. The model data for the average ice discharge per vessel transit scaled to prototype values compared favorably with data taken at the St. Marys River ice control structure (ICS). The model results of the force measurements were also consistent with data taken at the St. Marys ICS. The dynamic loading conditions were independent of vessel direction. The dynamic loading to the structure using 3 types of ice (plastic, natural and urea-doped) showed a considerable difference in their means and standard deviations. The urea-doped ice was evaluated for dynamic loading conditions, and reasonable peak values of 3 to 5 times the mean load at each measuring position were recorded, independent of vessel direction. It appears that synthetic random ice floes may be used in model studies where ice discharge through an opening in a structure needs to be documented. This study shows the synthetic random ice floe discharge to fall reasonably within the values obtained for natural ice discharge for both rafted and non-rafted ice fields above the ICS. However, the question of whether synthetic ice can be used for analyzing force distributions and dynamic force loading criteria cannot be fully answered at this time because the load distributions of the synthetic and natural floes appear to differ.
    Type of Medium: Series available for loan
    Pages: 68 Seiten , Illustrationen
    Series Statement: CRREL Report 82-34
    Language: English
    Note: CONTENTS Abstract Preface Introduction Scope of work Ice discharge from Lake Huron into St. Clair River Water velocity profiles at Port Huron Ice conditions Physical model Basis for selection Description Instrumentation Model ice control structure Open water calibration Open water tests Experimental procedures and techniques Ice cover calibration Ice control structure orientation Analysis of ice discharge due to ship transits Natural ice Synthetic ice Forces on the ice control structure Static measurements Dynamic force measurements Potential additional shear stresses Anticipated ice conditions with ICS Conclusions Literature cited Appendix A. Application of model results Appendix B. Suggested additional studies Appendix C. Derivation of ice discharge
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  • 33
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-83/6
    In: CRREL Report, 83-6
    Description / Table of Contents: During the austral summers of 1976-77 and 1978-79, several ice cores were taken from the McMurdo Ice Shelf brine zone to investigate its thermal, physical and chemical properties. This brine zone consists of a series of super-imposed brine layers (waves) that originate at the seaward edge of the ice shelf and migrate at various rates, depending upon their age and position in the ice shelf. The brine in these layers becomes increasingly concentrated as the waves migrate inland through the permeable ice shelf firn. Chemical analyses of brine samples from the youngest (uppermost) brine wave show that it contains sea salts in normal seawater proportions. Further inland, deeper and older brine layers, though highly saline (S 〉 200 ‰), are severely depleted in SO2-4 with the SO2-4/Na+ ratio being an order of magnitude less than that of normal seawater. Analyses of Na+, K+, Ca2+, Mg2+, SO2-4 and CI-, together with solubility and temperature considerations, show that the sulfate depletion is due to selective precipitation of mirabilite, Na2SO4*10H2O. The location of the inland boundary of brine penetration is closely related to the depth at which the brine en-counters the firn/ice transition. However, a small but measurable migration of brine is still occurring in otherwise impermeable ice; this is attributed to eutectic dissolution of the ice by concentrated brine as it moves into deeper and warmer parts of the McMurdo Ice Shelf.
    Type of Medium: Series available for loan
    Pages: iii, 16 Seiten , Illustrationen
    Series Statement: CRREL Report 83-6
    Language: English
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  • 34
    Call number: ZSP-201-83/7
    In: CRREL Report, 83-7
    Description / Table of Contents: Peak power generation with hydropower creates tailwater flow conditions characterized by high and low flows with abrupt transitions between these states. Flows occurring in tailwaters typically form sharp-fronted, large-amplitude waves of relatively short period. An understanding of the mechanics of downstream propagation of these waves is important both for direct application in studies of the tailwater and because of the similarity of these waves to those following a dam break. An analysis of the dynamic equations of open channel flow is used to quantify the relative importance of flow wave convection, diffusion and dispersion in rivers. The relative importance of each process is re­lated to the relative magnitude of terms in the dynamic equations, providing a physical basis for model formulation. A one-dimensional diffusion wave flow routing model, modified for tailwaters, simulates the important physical pro­cesses affecting the flow and is straightforward to apply. The model is based upon a numerical solution of the kine­matic wave equation. The “modified equation,” Hirt, and von Neumann analyses are used to gain insight into the stability and dissipative and dispersive behavior of the numerical solution, and results of these analyses are compared. A set of linear routings is used to demonstrate the dissipative and dispersive behavior predicted by the analyses and to verify the accuracy of an expression that quantifies the numerical diffusion of the model. The analyses provide a basis for selection of numerical parameters for model applications. The capability and accuracy of the model are enhanced when physical wave diffusion is balanced by numerical diffusion in the model. Maintaining the diffusion balance re­quires that the time derivative weighting parameter 0 be variable and in some instances negative. Though some amount of phase error is introduced, negative 0 values have no adverse effect upon model stability. Field studies were con­ducted to demonstrate the benefits of careful model development and analysis, and to verify the diffusion wave model for rapidly varying tailwater flow. The bed slope and roughness characteristics of the field study reaches (below Apalachia and Norris Dams) differ greatly, spanning those of a large number of rivers of practical interest. The accurate simulation of flow in both of these tailwaters attests to the soundness of both the physical basis of the model and the numerical solution technique. The field studies confirm, for the extreme case of rapidly varying flow in a mildly sloped river, that inertia has a negligible effect upon unsteady flow waves at low Froude numbers. Additionally, these studies verify that diffusion of short-period waves in rivers is generally significant.
    Type of Medium: Series available for loan
    Pages: vi, 41 Seiten , Illustrationen
    Series Statement: CRREL Report 83-7
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Physical diffusion and dispersion in open channel flow Modeling approach Description of the diffusion wave flow routing model Analysis of the numerical model Modified equation and Hirt analyses of diffusion wave model von Neumann analysis of the diffusion wave model Linear case studies Accuracy considerations of the numerical solution Field studies Apalachia Dam tailwater Norris Dam tailwater Conclusions Literature cited
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  • 36
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-86/17
    In: CRREL Report, 86-17
    Description / Table of Contents: Rime icing and freezing precipitation are of concern to the radio and television broadcasting industry. This report contains the results of a study seeking to document the severity and extent of transmitter tower icing and related problems in the northeastern United States. Information was obtained via mail questionnaire and telephone interviews with 85 station owners and engineers concerning 118 different stations. Results show that television and FM broadcasters are seriously impacted by tower icing; however, AM operators are usually not affected by expected New England icing levels. Combined annual costs for icing protection and icing-related repairs averaged $121, $402 and $3066 for AM, FM and TV stations respectively. None of the AM stations polled employ any icing protection in the three northern states averaged 80%, indicating a significant concern for icing in that region. In contrast, the percentage of FM stations with icing protection was 63.5% for the southern New England states. The usage of guyed versus non-guyed towers was a poor indicator of icing costs. However, the factors of increasing mast height and mast top elevation are significant to increasing costs.
    Type of Medium: Series available for loan
    Pages: iv, 52 Seiten , Illustrationen
    Series Statement: CRREL Report 86-17
    Language: English
    Note: Contents Abstract Preface Introduction Background Types of accretions Problems caused by icing Prevention and shedding methods Results The survey Data presentation Discussion Survey response distribution Effect of icing protection on parameter averages Effect of tower type on parameter averages Moderate and more severe icing locations Relationship of climate, geography and topography to icing severity Total annual costs Conclusions Literature cited Appendix A: Tower icing survey Appendix B: Station summaries
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  • 37
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-86/14
    In: CRREL Report, 86-14
    Description / Table of Contents: Three methods for determining the frost susceptibility of soils are evaluated in this report. These methods are the U.S. Army Corps of Engineers frost design soil classification system, a moisture-tension/hydraulic-conductivity test, and a laboratory freeze-thaw test. The Corps method, which is based on particle size, soil classification, and a laboratory freezing test, was found to be useful for identifying frost-susceptibility. The moisture-hydraulic-conductivity test was found to be unacceptable because it required too much time and its results correlated poorly with field observations. The freeze-thaw test was determined to be the most accurate of the methods studied, including the freeze test that is a part of the Corps method. The freeze-thaw test is thoroughly described. It includes indexes of both frost-heave susceptibility (heave rate) and thaw-weakening susceptibility (CBR after thawing). It also accounts for the effects of freeze-thaw cycling and is completely automated to improve the repeatability of the test results. It is suggested that the freeze-thaw test considered as a replacement for the Corps freezing test.
    Type of Medium: Series available for loan
    Pages: v, 56 Seiten , Illustrationen
    Series Statement: CRREL Report 86-14
    Language: English
    Note: Contents Abstract Preface Introduction Description of the selected sites Corps of engineers frost design soil classification system Moisture-tension/hydraulic-conductivity tests Freezing test Validation Description of test sites and materials Sample preparation Results and analysis of laboratory tests Corps of engineers frost design soil classification system Moisture-tension/hydraulic-conductivity test Freezing test Discussion Conclusions Recommendations Literature cited Appendix A: Summary of frost-susceptibility tests on natural soil
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  • 38
    Call number: ZSP-201-87/14
    In: CRREL Report, 87-14
    Description / Table of Contents: During February and March 1980 the physical properties of Weddell Sea pack ice were investigated via core drilling of 66 floes located along the transect of 600 nautical miles from 64°S to 74°S latitude at roughly 40°W longitude. These studies revealed widespread frazil ice in amounts not known to exist in Arctic sea ice of comparable age and thickness. It is estimated from structure studies of 62 of the 66 floes that 54% of the total ice production of the Weddell Sea is generated as frazil. The disposition and exceptional thickness of the frazil show that mechanisms other than surface turbulence effects are involved and imply that the circulation and structure of the water in the upper levels of the Weddell Sea are significantly different from those in the Arctic basin. Salinities of both first-year and multi-year floes are notably higher than those of their Arctic counterparts because summer surface melting is rare or absent in the Weddell Sea; in the Arctic, downward percolating meltwater flushes through the ice and lowers its salinity. Fluorescence was evaluated as a means of revealing biological activity in Weddell Sea pack ice. It proved useful as an index of combined living and dead material in the ice, but measurements failed to establish any consistent relationship between fluorescence and salinity as suggested be earlier work in the Weddell Sea.
    Type of Medium: Series available for loan
    Pages: iv, 80 Seiten , Illustrationen
    Series Statement: CRREL Report 87-14
    Language: English
    Note: CONTENTS Preface Introduction Sea ice structure and classification Logistics and field operations Analytical techniques Crystalline structure Fluorescence Results Salinity Crystalline structure Fluorescence Description of selected floes Conclusions Literature cited Appendix A: Floe descriptions
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  • 39
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/10
    In: CRREL Report, 87-10
    Description / Table of Contents: Uniaxial constant-stress and constant-strain-rate compression tests were conducted on more than 200 remolded, saturated, frozen specimens of Fairbanks silt under various conditions. A series of curves of stress vs strain rate for various temperatures of strain rates ranging from about 6x10-2 to 10-8s-1show a close strength correspondence between the constant-stress and-costant strain-rate tests. All of these "complete" stress vs strain rate curves could not be described by a single power law or exponential equation, indicating that different deformation mechanisms are dominant within different ranges of strainrate Two critical strain rates for distinguishing between the different deformation mechanisms were ob-served to be near 10- 3 and 10-6 s-1 for the medium-dense frozen Fairbanks silt. The former indicates the transition from ductile failure to moderate brittle fracture as strain rate increases, while the latter indicates the transition from dislocation creep to glide creep (by the authors' definition). Based on the change in flow law, two fundamental creeps were classified: short-term creep, which is governed by glide creep, and long-term creep, which is governed by dislocation creep. The failure criterion of frozen silt has a general form of em x tm = Ef, where m depends only on density, and tm is in minutes if m is not 1. The failure strain Ef was not sensitive to temperature and strain rate over a certain range of strain rates, but it was very sensitive to density. Assur's creep model (1980) for ice was used to fit the creep data in this study. It works well for short-term creep but does not fit as well for long-term creep. The rate process theory was applied to the creep data. A very high value of experimental activation energy was obtained for lower stresses, and a very high value of apparent activation energy was observed for higher temperatures. The peak compressive strength was very sensitive to temperature and strain rate but relatively insensitive to density. While the initial tangent modulus is not-sensitive to strain rate, it increases with decreasing temperature and density.
    Type of Medium: Series available for loan
    Pages: vi, 75 Seiten , Illustrationen
    Series Statement: CRREL Report 87-10
    Language: English
    Note: CONTENTS Abstract Preface Introduction Review of previous work Specimen preparation Material Molding Testing procedure and apparatus Test results Definition of strain and stress Definition of creep failure Definition of failure in constant-strain-rate tests Definition of initial yield strength Determination of initial tangent modulus and 50% peak strength modulus Creep behavior General nature of the creep process and the failure mode Minimum creep rate Time to creep failure Relationship between t, and tm Creep failure strain and failure criterion Creep model and prediction of creep strain Strength behavior General stress-strain behavior and failure mode Peak compressive strength Initial yield strength Failure strain Initial yield strain Initial tangent modulus 50% peak strength modulus Correspondence between constant-stress tests and constant-strain-rate tests Conclusions Literature cited Appendix A: Unfrozen water content data Appendix B: Physical properties of samples tested
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  • 40
    Monograph available for loan
    Monograph available for loan
    Leipzig : Central Institute of Isotope and Radiation Research, Academy of Sciences of the German Democratic Republic
    Associated volumes
    Call number: AWI G6-19-91927-5
    In: Third Working Meeting Radioisotope Application and Radiation Processing in Industry, Abstracts of papers
    Type of Medium: Monograph available for loan
    Pages: 148 Seiten
    Language: English
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  • 41
    Call number: AWI G6-19-92758
    In: 2nd Working Meeting "Radioisotope Application and Radiation Processing in Industry", Abstracts of papers
    Type of Medium: Monograph available for loan
    Pages: 167 Seiten
    Language: English
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  • 42
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/15
    In: CRREL Report, 87-15
    Description / Table of Contents: Constant strain-rate tension tests were conducted on remolded saturated frozen Fairbanks silt at various temperatures, strain rates, and densities. It was found that the critical strain rate of the ductile-brittle transition is not temperature-dependent at temperatures down to -5°C, but varies with density. The peak tensile strength decreases considerable with decreasing strain rate for ductile failure, but it decreases slightly with increasing strain rate for brittle fracture. The failure strain remains almost constant at temperatures lower than about -2°C, but it varies with density and strain rate at -5°C. The initial tangent modulus is independent of strain rate and increases with decreasing temperature and density.
    Type of Medium: Series available for loan
    Pages: v, 29 Seiten , Illustrationen
    Series Statement: CRREL Report 87-15
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Testing Material Specimen preparation Testing procedure and apparatus Results Discussion Peak tensile strength, σm Failure tensile strain, ϵf Initial tangent modulus and 50% peak strength modulus Discussion of test techniques Conclusions Literature cited Appendix A: Physical properties of Fairbanks silt specimens Appendix B: Unfrozen water content data of Fairbanks silt with three typical water contents
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  • 43
    Call number: ZSP-201-87/17
    In: CRREL Report, 87-17
    Description / Table of Contents: The ability to map frazil ice deposits and water channels beneath an ice-covered river in central Alaska using the magnetic induction conductivity (MI) technique has been assessed. The study was performed during the first week of March of 1986 on the Tanana River near Fairbanks and employed a commercially available instrument operating at a fixed frequency with a fixed antenna (coil) spacing and orientation. Comparisons of the MI data with theoretical models based upon physical data measured along three cross sections of the river demonstrate the sensitivity of the MI technique to frazil ice deposits. The conductivity generally derived for the frazil ice deposits encountered is very low (approx. .00063 s/m) when compared with the measured value for water (approx. 0.011 S/m), and is similar to the calculated values for gravel and sandy gravel bed sediments. In all three cross sections, maxima in the apparent conductivity profiles correlated with frazil ice deposits. Difficulties, possibly due to adverse effects of cold weather upon instrument calibration, affected the quantitative performance of the instrument on one cross section, although the interpretation of the data (locations of open channels vs frazil deposits) was qualitatively unaffected.
    Type of Medium: Series available for loan
    Pages: iii, 17 Seiten , Illustrationen
    Series Statement: CRREL Report 87-17
    Language: English
    Note: CONTENTS Abstract Preface Introduction Magnetic induction conductivity method Site description and survey methods Cross section field data and modeling results X6 X3A X4 Conclusions and recommendations Literature cited Appendix A: Discussion of errors Appendix B: Modeling data
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  • 44
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/19
    In: CRREL Report, 87-19
    Description / Table of Contents: The approximate heat balance integral method (HBIM) is extended to the case of a medium with variable properties such as snow. The case of linear variation of thermal conductivity was investigated. An alternative heat balance integral method (AHBIM) was developed. Both constant surface temperature and surface heat flux were considered. A comparison was made of the temperature distribution from the HBIM, AHBIM and an analytical method for the case of constant surface temperature. In general, results agree quite well with the analytical method for small values of dimensionless time τ, but the difference becomes more pronounced as τ increases. It was found that the AHBIM with a quadratic temperature profile gave a somewhat better result, especially when the value of the dimensionless distance η is small. For a specific property function of E(η) = eη, closed form solutions were obtained. The results, when compared with those from HBIM, AHBIM and the analytical method were found to agree exceptionally well with the analytical method, especially for large values of τ.
    Type of Medium: Series available for loan
    Pages: iv, 26 Seiten , Illustrationen
    Series Statement: CRREL Report 87-19
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Mathematical analysis Constant surface temperature Constant surface heat flux Comparison with exact solution Alternative method Conclusions and comments Literature cited Appendix A: Derivation of equation 25 Appendix B: Derivations of equations 37 and 40 Appendix C: Derivation of equations 37a and 40
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  • 45
    Monograph available for loan
    Monograph available for loan
    Dordrecht : Springer
    Call number: AWI S2-18-91494
    Description / Table of Contents: This book provides a compact self-contained introduction to the theory and application of Bayesian statistical methods. The book is accessible to readers having a basic familiarity with probability, yet allows more advanced readers to quickly grasp the principles underlying Bayesian theory and methods. The examples and computer code allow the reader to understand and implement basic Bayesian data analyses using standard statistical models and to extend the standard models to specialized data analysis situations. The book begins with fundamental notions such as probability, exchangeability and Bayes' rule, and ends with modern topics such as variable selection in regression, generalized linear mixed effects models, and semiparametric copula estimation. Numerous examples from the social, biological and physical sciences show how to implement these methodologies in practice. Monte Carlo summaries of posterior distributions play an important role in Bayesian data analysis. The open-source R statistical computing environment provides sufficient functionality to make Monte Carlo estimation very easy for a large number of statistical models and example R-code is provided throughout the text. Much of the example code can be run ``as is'' in R, and essentially all of it can be run after downloading the relevant datasets from the companion website for this book. Peter Hoff is an Associate Professor of Statistics and Biostatistics at the University of Washington. He has developed a variety of Bayesian methods for multivariate data, including covariance and copula estimation, cluster analysis, mixture modeling and social network analysis. He is on the editorial board of the Annals of Applied Statistics.
    Type of Medium: Monograph available for loan
    Pages: IX, 270 Seiten , Illustrationen
    ISBN: 9780387922997 (GB.) , 9780387924076 (electronic)
    Series Statement: Springer texts in statistics
    Language: English
    Note: Contents: 1 Introduction and examples. - 1.1 Introduction. - 1.2 Why Bayes?. - 1.2.1 Estimating the probability of a rare event. - 1.2.2 Building a predictive model. - 1.3 Where we are going. - 1.4 Discussion and further references. - 2 Belief, probability and exchangeability. - 2.1 Belief functions and probabilities. - 2.2 Events, partitions and Bayes' rule. - 2.3 Independence. - 2.4 Random variables. - 2.4.1 Discrete random variables. - 2.4.2 Continuous random variables. - 2.4.3 Descriptions of distributions. - 2.5 Joint distributions. - 2.6 Independent random variables. - 2.7 Exchangeability. - 2.8 de Finetti's theorem. - 2.9 Discussion and further references. - 3 One-parameter models. - 3.1 The binomial model. - 3.1.1 Inference for exchangeable binary data. - 3.1.2 Confidence regions. - 3.2 The Poisson model. - 3.2.1 Posterior inference . - 3.2.2 Example: Birth rates. - 3.3 Exponential families and conjugate priors. - 3.4 Discussion and further references. - 4 Monte Carlo approximation. - 4.1 The Monte Carlo method. - 4.2 Posterior inference for arbitrary functions. - 4.3 Sampling from predictive distributions. - 4.4 Posterior predictive model checking. - 4.5 Discussion and further references. - 5 The normal model. - 5.1 The normal model. - 5.2 Inference for the mean, conditional on the variance. - 5.3 Joint inference for the mean and variance. - 5.4 Bias, variance and mean squared error. - 5.5 Prior specification based on expectations. - 5.6 The normal model for non-normal data. - 5.7 Discussion and further references. - 6 Posterior approximation with the Gibbs sampler. - 6.1 A semiconjugate prior distribution. - 6.2 Discrete approximations. - 6.3 Sampling from the conditional distributions. - 6.4 Gibbs sampling. - 6.5 General properties of the Gibbs sampler. - 6.6 Introduction to MCMC diagnostics. - 6.7 Discussion and further references. - 7 The multivariate normal model. - 7.1 The multivariate normal density. - 7.2 A semiconjugate prior distribution for the mean. - 7.3 The inverse-Wishart distribution. - 7.4 Gibbs sampling of the mean and covariance. - 7.5 Missing data and imputation. - 7.6 Discussion and further references. - 8 Group comparisons and hierarchical modeling. - 8.1 Comparing two groups. - 8.2 Comparing multiple groups. - 8.2.1 Exchangeability and hierarchical models. - 8.3 The hierarchical normal model. - 8.3.1 Posterior inference. - 8.4 Example: Math scores in U.S. public schools. - 8.4.1 Prior distributions and posterior approximation. - 8.4.2 Posterior summaries and shrinkage. - 8.5 Hierarchical modeling of means and variances. - 8.5.1 Analysis of math score data. - 8.6 Discussion and further references. - 9 Linear regression. - 9.1 The linear regression model. - 9.1.1 Least squares estimation for the oxygen uptake data. - 9.2 Bayesian estimation for a regression model. - 9.2.1 A semiconjugate prior distribution. - 9.2.2 Default and weakly informative prior distributions. - 9.3 Model selection. - 9.3.1 Bayesian model comparison. - 9.3.2 Gibbs sampling and model averaging. - 9.4 Discussion and further references. - 10 Nonconjugate priors and Metropolis-Hastings algorithms. - 10.1 Generalized linear models. - 10.2 The Metropolis algorithm. - 10.3 The Metropolis algorithm for Poisson regression. - 10.4 Metropolis, Metropolis-Hastings and Gibbs. - 10.4.1 The Metropolis-Hastings algorithm. - 10.4.2 Why does the Metropolis-Hastings algorithm work?. - 10.5 Combining the Metropolis and Gibbs algorithms. - 10.5.1 A regression model with correlated errors. - 10.5.2 Analysis of the ice core data. -
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  • 46
    Call number: AWI P6-20-93428
    Type of Medium: Monograph available for loan
    Pages: VII, 40 Seiten , Illustrationen
    Language: English
    Note: Contents 1 Executive summary 2 Introduction 3 The broad scientific problems 4 Specific scientific problems: a topical view 5 The resources issue 6 A strategy for planning and conducting research Transect Zone Number 1 (Weddell Transect Zone) Transect Zone Number 2 (Ross Transect Zone) Transect Zone Number 3 (Amery Transect Zone) Circum-Antarctic Studies 7 Broad scientific priorities 8 A methodology and chronology for proposed work 9 Special concerns References
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  • 47
    Call number: ZSP-201-84/9
    In: CRREL Report, 84-9
    Description / Table of Contents: This report presents the results of the first phase of a test program designed to obtain a comprehensive understanding of the mechanical properties of multi-year sea ice from the Alaskan Beaufort Sea. In Phase I, 222 constant-strain-rate uni-axial compression tests were performed on ice samples from ten multi-year pressure ridges to examine the magnitude and variation of ice strength within and between pressure ridges. A limited number of constant-strain-rate compression and tension tests, constant-load compression tests, and conventional triaxial tests were also performed on ice samples from a multi-year floe to provide preliminary data for developing ice yield criteria and constitutive laws for multi-year sea ice. Data are presented on the strength, failure strain, and modulus of multi-year sea ice under different loading conditions. The statistical variation of ice strength within and between pressure ridges is examined, as well as the effects of ice temperature, porosity, structure, strain rate and confining pressure on the mechanical properties of multi-year sea ice.
    Type of Medium: Series available for loan
    Pages: v, 107 Seiten , Illustrationen
    Series Statement: CRREL Report 84-9
    Language: English
    Note: CONTENTS Abstract Preface Introduction Field Sampling Site selection and description Ice sampling procedures Shipping and storage of ice samples Testing Techniques Multi-year Pressure Ridge Tests Ice description Sampling scheme and test variables Uniaxial compressive strength Residual compressive strength Failure strains Initial tangent modulus Statistical Variations in Ice Strength Differences in strength above and below level ice Sources of the variation in strength Shape of the strength histograms Multi-year Floe Ice Tests Ice description Uniaxial compressive strength Constant-load compression tests Constant-strain-rate tension tests Triaxial tests Conclusions Literature Cited Appendix A: Structural profile of a multi-year pressure ridge core Appendix B: Ridge uniaxial compression test data Appendix C: Structural profile of the continuous multi-year floe core Appendix D: Multi-year floe test data
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  • 48
    Call number: AWI G2-18-91717
    Type of Medium: Monograph available for loan
    Pages: 60 Seiten , Illustrationen, graphische Darstellungen
    Language: German , English
    Note: POSTER: ODP Leg 122 - Palynostratigraphie und Korrelation von Site 759 und Site 760 / W. Brenner. - Stoffbestand, Genese und Entwicklung gabbroider Gesteine der ozeanischen Unterkruste / R. Emmermann & A. Hoffmann. - Massenspektrometrische Bor-Isotopenbestimmung in Ozeanbodenbasalten und -sedimenten / J. Erzinger & E. Zuleger. - Fazies und Paläozeanographie glazial/interglazialer Sedimente des Europäischen Nordmeers / R. Henrich. - Geochemische Untersuchungen an Aschenlagen der Südatlantik-Legs 113 und 114 / H.-W. Hubberten, W. Morche, F. Westall & D. K, Fütterer. - Heat flow and fluid flow in deep-sea sediments and ocean crust / J. Mienert & R. P. von Herzen. - ODP Leg 114: Bolboforma (Algae, Chrysophyta) im subantarktischen Paläogen / D. Spiegler. - Magnetostratigraphie tertiärer Sedimentfolgen vom Maud Rise, Weddell See - Ergebnisse von ODP Leg 113 / V. Spiess & N. Nowaczyk. - Sedimentologische Untersuchungen an quartären und tertiären Sedimenten von ODP Site 647, Labrador See / R. Stax & R. Stein. - Corg-Gehalt und Sedimentationsrate - ein 'Paleoenvironment-Indikator' in marinen Sedimenten / R. Stein. - Calcareous nannofossils from DSDP Hole 530A: their biostratigraphy and correlation with paleomagnetic reversals / J. C. Steinmetz & H. Stradner. - Eine Methode zur genetischen Unterscheidung der magnetischen Mineralfraktion in Tiefseesedimenten / T. von Dobeneck. - VORTRÄGE : Zur Stabilität der Magnetosomen: typische Magnetofossilien im limnischen und marinen Bereich / G. Amarantidis, H. Vali, G. Morteani, J. Müller, N. Petersen & L. Bachmann. - Austauschprozesse des organischen Materials zwischen Porenwasser und Sediment - Leg 112, Peru Margin / Arbeitsgruppe E. T. Degens. - Planung von Bohrungen in sediment-bedeckten Krustenakkretionszonen / H. Bäcker. - Chemische Stoffbilanzen zwischen Meerwasser, ozeanischer und ophiolithischer (Troodos) Kruste / U. Bednarz & H.-U. Schmincke. - Mikrogefüge, Deformationsmechanismen und Fluids im Barbados-Akkretionskeil / J. H. Behrmann & D. J. Prior. - Organische Geochemie der Sites 767 und 768, ODP Leg 124, Celebes und Sulu See / U. Berner. - Die sedimentären Abfolgen der Celebes und Sulu See (Leg 124) / Ch. Betzler & Leg 124 Shipboard Scientific Party. - Zusammensetzung und Herkunft von Aschenlagen und die Frage magmatischer Episodizität im Nordatlantik / P. R. Bitschene & H.-U. Schmincke. - Die vulkano-tektonische und magmatische Entwicklung des Kerguelen Plateaus (KP, südlicher Indischer Ozean) / P. R. Bitschene, K. Mehl, H.-U. Schmincke & Leg 120 Shipboard Party. - The Toba Ash, older tephra layers and basement rocks of the eastern Indian Ocean - ODP Leg 121 / J. Dehn, H.-U. Schmincke & Leg 121 Shipboard Party. - Schwellen-Becken-Sedimentation im Jura: Vergleich Alpen Atlantik / O. Ebli. - Glaziale Entwicklung der Prydz Bay, Ostantarktis (ODP Leg 119) / W. U. Ehrmann. - Palynologische Untersuchungen in miozänen Sedimenten des Nordatlantiks - erste Ergebnisse von Site 408/Leg 49; Site 554/ Leg 81 und Site 400/ Leg 48 / E. Engel & H. Zankl. - Känozoische Biochronologie und Paläozeanographie der Norwegischen See: Synthese ODP Leg 104 / R. Goll, S. Locker, O. Spiegler, U. Beil, R. Henrich & J. Thiede. - Magnetostratigraphie der Sedimente von Leg 120 / F. Heider, H. Inokuchi & ODP Leg 120 Shipboard Scientific Party. - Flüssigkeitseinschlüsse als Indikator für hochtemperierte Alteration im Sheeted Dike Komplex der ozeanischen Kruste (Bohrung 504B, Leg 111) / P. M. Herzig, D. Schöps & G. Friedrich. - Zum geologischen Aufbau des argentinischen Kontinentalrandes: Ergebnisse einer seismischen Übersichtsmessung der BGR / K. Hinz & H. Meyer. - Zur Ablagerungsgeschichte des Kerguelen Plateaus, südlicher Indischer Ozean (ODP Leg 120) / A. Mackensen & Leg 120 Scientific Party. - Entstehung des Kerguelen - Plateaus: erste Ergebnisse der Legs 119 und 120 / K. Mehl, P. R. Bitschene, H.-U. Schmincke & Leg 119 Shipboard Party. - Ein Modell für globale Plattenbewegungen im Mesozoikum und Känozoikum / R. D. Müller. - Biostratigraphisch-paläontologische Ergebnisse von ODP Leg 123 / J. Mutterlose. - Zyklische Sedimentation in der Mittelkreide von Umbrien / S. Noe. - Compositional variation and internal structure of igneous oceanic crust exposed in the Galapagos Microplate / T. H. Puchel & N. Blum. - Pauschale und molekulare organisch-geochemische Signale in den Sedimenten der Auftriebszone vor Peru (ODP Leg 112) / J. Rullkötter, H. L. Ten Haven, R. Stein, R. Littke & D. H. Welte. - Leg 123 - Multivariate Statistik zur Sedimentologie / M. Schott. - Wird es arktische Tiefseebohrungen geben? / J. Thiede. - Die Geburt des Indischen Ozeans (erste Ergebnisse von ODP-Leg 123/ Argo Abyssal Plain off NW Australia) / J. Thurow & Shipboard Scientific Party ODP-Leg 123. - Die Klimaentwicklung der Sahara und der Sahelzone während der letzten 8 Mill. Jahre (Ergebnisse von ODP-Sites 657-661) / R. Tiedemann, M. Sarnthein, B. Stabell & R. Stein. - HRTEM characterization of single-domain magnetic particles from a deepsea sediment / H. Vali, J. L. Kirschvink, G. Morteani, L. Bachmann & N. Petersen. - Paläoenvironment der Riftphase und des Rift-Drift-Übergang am Exmouth Plateau (NW Australien): Kurzbericht über ODP-Leg 122 und ein BGR-Forschungsprojekt / U. von Rad, W. Brenner & G. Wirsing. - Fluktuationen und Biostratigraphie benthischer Foraminiferen an Site 658 und 659, Leg 108 (Pleistozän, Pliozän) / P. Weinholz & G. F. Lutze.
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  • 49
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-83/30
    In: CRREL Report, 83-30
    Description / Table of Contents: Ice sheets are formed and retained in several ways in nature, and an understanding of these factors is needed before most structures can be successfully applied. Many ice sheet retention structures float and are somewhat flexible; others are fixed and rigid or semirigid. An example of the former is the Lake Erie ice boom and of the latter, the Montreal ice control structure. Ice sheet retention technology is changing. The use of timber cribs is gradually but not totally giving way to sheet steel pilings and concrete cells. New structures and applications are being tried but with caution. Ice-hydraulic analyses are helpful in predicting the effects of structures and channel modifications on ice cover formation and retention. Often, varying the flow rate in a particular system at the proper time will make the difference between whether a structure will or will not retain ice. The structure, however, invariably adds reliability to the sheet ice retention process.
    Type of Medium: Series available for loan
    Pages: iv, 39 Seiten , Illustrationen , 1 Beilage
    Series Statement: CRREL Report 83-30
    Language: English
    Note: Contents Abstract Preface Introduction Natural ice sheets Choosing an ice control structure Flexible structures Ice booms Frazil collector lines Fence booms Rigid or semirigid structures Pier-mounted booms Stone groins Artificial islands Removable gravity structures Timber cribs Weirs Pilings and dolphins Structures built for other purposes Hydroelectric dams Wicket dams Light piers and towers Bridge piers Breakwaters Ice control not using Structures Channel improvements Ice sheet tying Ice sheet bridges Conclusions Literature cited Appendix A: Ice control structure
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  • 50
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-85/10
    In: CRREL Report, 85-10
    Description / Table of Contents: Various methods of generating synthetic seismograms are reviewed and examples of recent applicatiors of the methods are cited. Body waves, surface waves, and normal modes are considered. The analytical methods reviewed include geometric ray theory, generalized ray theory (Cagniard-de Hoop method), asymptotic ray theory, reflectivity method, fullwave theory, and hybrid methods combining ray theory and mode theory. Two numerical methods, those of finite differences and finite elements, and a hybrid method combining finite differences with asymptotic ray theory are described Limitations on the application or validity of the various methods are stated.
    Type of Medium: Series available for loan
    Pages: v, 48 Seiten , Illustrationen
    Series Statement: CRREL Report 85-10
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Section 1. Introduction Section 2. Wave propagation in the earth Section 3. Body waves: ray theory and wave theory Geometric ray theory Wave theory Section 4. Surface waves Section 5. Normal modes Section 6. Finite-difference method Section 7. Finite-element method Section 8. Hybrid methods Section 9. Conclusion Literature cited
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  • 51
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-85/9
    In: CRREL Report, 85-9
    Description / Table of Contents: Large temperature gradients applied to a snow cover drive water vapor upwards and result in rapid recrystallization of snow crystals. The same temperature gradients create gradients of air density that can cause flows of air through the snow cover. The formalism necessary to describe these flows I developed heroin an effort to include the convection of vapor in the understanding of snow metamorphism. The theory of convection through porous media is extended here to include the transport of water vapor, which is important because of its latent heat. Results are presented in terms of a Lewis number, defined as the ratio of thermal to mass diffusivities. For Lewis numbers greater than 1.0 phase change intensifies convection, and for Lewis numbers less than 1.0 phase change retards convection. Two boundary conditions of special interest in the study of snow, a constant heat flux bottom and a permeable top are investigated. Their influence on the transfer of heat is quantified, and it is found that heat transfer can be described as a linear function of the driving force for convection. Convection in sloped layers is quantified, and explained in a physically consistent manner. The effect of a permeable top on convection at low Rayleigh numbers is derived. Experiments are performed to measure the effects of convection on heat transfer through glass beads and snow. The model results using constant flux boundary conditions are confirmed by the experiments. Experiments show that convection can occur in snow, and that convection behaves in a manner consistent with our theoretical understanding of the phenomenon. Some uncertainty exists about the permeability and thermal conductivity of snow and hence it is uncertain if thermal convection would occur for a given temperature gradient, density and thickness. Also, for a given convective intensity, there is much uncertainty about how much the rate of snow metamorphism is increased.
    Type of Medium: Series available for loan
    Pages: vi, 70 Seiten , Illustrationen
    Series Statement: CRREL Report 85-9
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Snow metamorphism Mass transfer by diffusion in snow Heat transfer Background-porous media Structure of thermal convection Rayleigh number Onset problem Heat transfer attributable to thermal convection Layering and slope effects Studies of convection through snow Modeling Equation of motion Energy equation Finite difference methods Numerical solution Verification of the model Modeling results Effects of constant flux and permeable boundaries on convection in horizontal layers Effects of phase change on convection Convection in sloped layers Experiments Introduction Experimental apparatus Experimental results and discussion Glass beads Snow Applications and conclusions Onset of Benard convection in seasonal snow covers Applications to snow metamorphism Summary Recommendations Literature cited Appendix A: Derivation of fmite difference formulae Appendix B: Computer programs Appendix C: Sample calculations
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  • 52
    Call number: ZSP-201-85/15
    In: CRREL Report, 85-15
    Description / Table of Contents: A method for the analysis of TNT, RDX and HMX explosives in soils and sediments has been developed. It consists of methanol extraction followed by reversed-phase high performance liquid chromatography using 10% acetonitrile/40% methanol/50% water as the eluant. This method was used to study the effect of various drying techniques upon the recovery of TNT, RDX, and HMX from soil and sediment samples contaminated with high (%) and low (micron g/g) levels of these explosives. For highly contaminated samples, complete recovery of TNT and RDX was obtained using freeze drying while air drying at room temperature resulted in greater than 90% recovery for both explosives. Other techniques, such as oven drying at 105 C, oven drying at 45 C, microwave oven drying, and drying under infrared lamps, all resulted in greater losses, with TNT and RDX recoveries ranging from 76 to 90%. Drying losses were not due to simple volatilization containing low levels of TNT, RDX and HMX, recoveries of all three explosives were quantitative for all the above drying techniques.
    Type of Medium: Series available for loan
    Pages: iii, 15 Seiten , Illustrationen
    Series Statement: CRREL Report 85-15
    Language: English
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  • 53
    Call number: AWI G3-22-94800
    Type of Medium: Dissertations
    Pages: ix, 85 Seiten , Illustrationen
    Language: English
    Note: Dissertation, Universität Potsdam, 2006
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  • 54
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-85/18
    In: CRREL Report, 85-18
    Description / Table of Contents: Concern over the environmental fate of explosives has brought about the development of sensitive analytical methods for measuring them in groundwater. In turn this concern has been extended to validating the sampling procedures for groundwater. This report addresses the potential effects of residual drilling muds on the analysis for explosive contaminants (TNT, DNT, RDX, and HMX) in monitoring wells. The approach was to determine sorption isotherms for each contaminant. Sorption appeared to be independent of solids concentration. Linear isotherms were obtained for RDX and HMX over a range of analytic concentrations; therefore, a single constant can be used to estimate the amount sorbed when the solution concentration is known. Isotherms for TNT and DNT were not linear, however. Scatchard analysis suggested that the isotherms for these analytes could be resolved into two predominant components: a linear component above a certain sorbed quantity and a Langmuir-type component below this quantity. The experimental data were fitted by regression analysis using the appropriate model. The equations developed can be used to predict the sorbed fraction (analytical bias) for any combination of solids and analyte concentration. The amounts of bentonite found in some existing wells do not appear to be sufficient to cause significant bias in analyses for these explosive contaminants.
    Type of Medium: Series available for loan
    Pages: iv, 40 Seiten , Illustrationen
    Series Statement: CRREL Report 85-18
    Language: English
    Note: CONTENTS Abstract Preface Introduction Materials and methods Bentonite and water samples Sorbate solutions Sorption isotherms HPLC analysis Analyte standards Water solubilities Octanol-water partition coefficients Sorption isotherms Freundlich Langmuir BET Scatchard Gibbs Linear Polynomial Results and discussion TNT DNT RDX and HMX Effect of drilling muds on analysis SEM and EDXA analysis of bentonite wells Other studies Summary Literature cited Appendix A : Results for TNT Appendix B: Results for DNT Appendix C: Results for RDX Appendix D : Results for HMX Appendix E: Characteristics of Quik-Gel, Aqua-Gel and well water
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  • 55
    Call number: ZSP-980-70
    In: 2nd Working Meeting "Radioisotope Application and Radiation Processing in Industry", Part 2, 50 to 97
    In: ZfI-Mitteilungen, Nr. 70
    Type of Medium: Series available for loan
    Pages: 355 Seiten , Illustrationen
    ISSN: 0323-8776
    Series Statement: ZfI-Mitteilungen 70
    Language: English
    Note: Contents of Part 2 Hecht, K. Gerber, R. Otto: Studies on the drying of paints by means of 14C-labelled compounds K. Wagner, F. Brutschin, I. Ritter, T. Gritsch, H. Zimmermann, H. Borchert: Investigations by the aid of radioisotope methods on the technology of the production of carbon and silicon carbide materials K. Gloe, P. Mühl: Determination of metal extraction process parameters using tracer technique W. Migdał, W. Łada, K. Malec-Czechowska: Studies on liquid-liquid extraction of noble metals using radiotracers L. Petryka, K. Przewłocki: Radiotracer investigations of benefication copper ore in the industrial flotation process Z. Bazaniak, J. Palige: Determination of Cu recovery degree from slags in shaft process by means of radiotracers R. Burek, J .K. Zurawicz: On the optimization of concentration measurements in heterogeneous materials based on β-backscatter measurements B. Heinrich: Analysis of carbon content in crude brown coal by inelastic scattering of neutrons and the method of time correlated associated particles P. Urbańaki, D. Wagner, M. Jankowska, E. Kowalska: Determination of calcium and iron and measurements of ash content in the brown coal H.-W. Thümmel: Some considerations relating to the prediction of the efficiency of radiometric methods for the continuous ash content determination of coal L. Wawrzonek: Monitor of ash content of coal with X-ray source I. Pavlicsek, V. Stenger, A. Veres: Apparatus for gamma activation analysis I. Végvári, I. Juhász: Determination of PbO content of lead-glass samples on the ground of gamma-absorption E. Schöntube, H.-J. Große: Aerosol ionization gas analysis as a monitoring for waste halothane in the atmosphere of operating theatre S. Mothes, P. Popp, G. Oppermann, W.-D. Herberg: Measurement of fluorocarbons with the ECD P. Popp, E. Schöntube, G. Oppermann: The usability of radiation ionization detectors for the determination of N2O concentrations in the air of operating theatres P. Popp, G. Arnold, G. Oppermann: A hydrocarbon-sensitized argon ionization detector for the detection of inorganic compounds R. Szepke, W. Lisieski, J. Harasimczuk: Automatic dust monitor AMIZ G. Vormum: Sealed sources - problems of design, measurement and quality control L. Gąsiorowski: New trends in developments of ratioisotope gauges in Poland G. Brunner: Direct chemical information from special radio tracers as well as from outer X-ray excitation J. Hirling: Experience and future trend in industrial application of nuclear methods in Hungary I. N. Ivanov, O. K. Nikolaenko, Yu. V. Phecktistov, V. L. Chulkin: Use of short-lived nuclides in activation analysis Kl.-P. Rudolph, J. Flachowsky, A. Lange: Trace element determination in semiconducter selenium by neutron activation analysis (NAA) W. Lisieski, J. Mirowicz: Some industrial applications of instruments with neutron sources R. Dybczyński, H. Maleszewaka, S. Sterliński, Z. Szopa, M. Wasek: Some problems in neutron activation determination of gold and silver in ores and concentrates of copper industry L. Jankowski: Cost-benefit aspects of radioisotope application in industry B. Manouchev, T. Boschkova, L. Tsankov, V. Gurev, I. Kojucharov, G. Grozev: On the possibilities of the direct gamma-spectremetry in natural waters P. Morgenstern, D. Müller, W. Riedel: A parallel grid proportional scintillation counter for the X-ray region from 3 to 20 keV with regard to high count rates N. A. Anders, V. S. Isaev, V. I. Filatov, B. E. Kolesnikov, D. Müller, P. Morgenstern, W. Riedel, V. P. Varvaritsa: X-ray fluroescence analyzer of light elements with proportional scintillation counter D. Müller, P. Morgenstern, W. Riedel, W. Warwariza, B. E. Kolesnikow, N. A. Anders, W. J. Filatov: General considerations concerning the use of the X-ray analyzer "RALE" in industry
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  • 56
    Call number: ZSP-980-71
    In: 2nd Working Meeting "Radioisotope Application and Radiation Processing in Industry", Part 3, 98 to 155
    In: ZfI-Mitteilungen, Nr. 71
    Type of Medium: Series available for loan
    Pages: 368 Seiten , Illustrationen
    ISSN: 0323-8776
    Series Statement: ZfI-Mitteilungen 71
    Language: English
    Note: Contents of Part 3 P. Popp, J. Leonhardt: Characterization of coulometric and hypercoulometric ECD mode of operation D. Hinneburg, H.-J. Grosse, J. Leonhardt, P. Popp: Calculation of current-voltage characteristics of electron-capture detectors A.G. Rozno, V.V. Gromov: Study of volume electric charge in radioactive dielectrics by the method of "acoustic sounding" Iv. N. Pandev, M.G. Christova, St.D. Stefanov, N.V. Gentchev, St.T. Bakardjiev, D.T. Genov, Ch.D. Christov: Portable gamma-irradiator - modified model P. Hargittai, V. Stenger: Planning of dose-rate distribution of radiation fields by computer M. Remer: DOSKMF2 - A contribution to the computer-aided design of dose rate distributions A. Heger, H. Dorschner, W. Schumann, D. Pleul: Characterization of the radiation field and control of the optimal electron beam accelerator operation for industrial processes V. Prenerov, K. Shivarov, P. Ivanov: Programme for radiation protection by using portable defectoscopes in industrial building T. Geßner, K. Irmer: Nuclear radiation detectors using high resistivity neutron transmutation doped silicon H.-G. Könnecke, D. Luther: The influence of airing systems on the residence time in biological clarification plants J. Dermietzel, C. Wienhold, H. Grundmann, A. Staschok, J. Koch, E. Bordes: Tracer studies on carbon monoxide and carbon dioxide formation in liquid phase oxidation of p-xylene W. Smułek: Use of technical mixtures of carboxylic acids to the extraction of silver H. Förster: Determination of oxide film thickness on aluminium using 14-MeV neutron activation and BET method H. Jaskólska, L. Waliś, C. Janusz: Investigations of the monocrystallization process of neodymium doped YAG using radiotracers H. Wagler: Substoichiometric determination of Pd-II-traces with dithizone and problems of determination P. Tábor, L. Molnár, D. Nagymihá!yi: Radioisotope gauge for automatic control of cottonwool package H.-W. Thummel, G. Körner, D. Fritzsche: Compensation for thickness variations in determining the bulk material composition on conveyor belts using combined scatter-transmission and thickness measuring methods D. Fritzsche, W. Dolak: Radiometric determination of ash content of raw lignites M. Braune: A simplified mathematical model for scattered transmission of X-rays in raw brown coal P. S. Kamenov, E. I. Vapirev, S. I. Ormandjiev: A new type of nuclear weighing device for transporter belts W. Smulek, M. Borkowski: Separation of reduced molybdenum from fission products. The Mo - HN03 - HDEHP system J. Komosiński, M. Radwan: Selected problems of radioisotope technique for wear investigation of precise elements Dr. A. Várkonyi: The thin layer activation for industry G. Hartmann, P. Kulicke: Wear testing in power stations J. Kraś, Z. Banasik: The radioisotopes in wear investigation of combustion engines H.-D. Grohmann: Short-time measurements of wear on surface activated rails G.M. Ter-Akopian, E.A. Sokol, Fam Ngok Chyong, M.P. Ivanov, L.P. Chelnokov, V.I. Smirnov, V.A. Gorshkov: Neutron multiplicity detector for the study of rare nuclear decay events L. Gąsiorowski, P. Mroziński, K. Sobkowicz, F. Zrudelny: Implementation of Intel 8080 - based microcomputer system in the radioisotope measurements control instrumentation W. Birkholz, M. Steinert: Evaluation of autoradiograms using a microcomputer F. Myšák, M. Krejči, J. Hakl, E. Smrkovský: Study of boron diffusion in high temperature Ni-base alloys by means of solid state track detectors W. Birkholz, H.-Ch. Treutler, K. Freyer, M. Geisler, J. Dubnack: Autoradiography of gallium in silicon H.C. Treutler, K. Freyer: On quantitative autoradiography of semiconductor basic material A.S. Shtan': Radiation evaluation techniques and facilities used for quality assurance of fuel elements and fuel assemblies for nuclear power plants D. Babić, A. Šafranj, V. Marković: Radiation degradation of poly-propylene-molecular weight and melt viscosity change A. Ciszek: Modern irradiation processes equipment-accelerators and their applications G. Kummer: Identification of signals by means of the decision theory N.S. Batchvarov, I.D. Vankov, L.P. Dimitrov, Ch.D. Shukov, P.A. Pavlov: Betareflektometer SR-77
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  • 57
    Monograph available for loan
    Monograph available for loan
    Fairbanks, Alas. : Institute of Northern Engineering, University of Alaska
    Associated volumes
    Call number: AWI G3-16-90316-4
    In: Ninth International Conference on Permafrost, Volume 1
    Type of Medium: Monograph available for loan
    Pages: xxx, 1054, xxxvi, xl Seiten , Illustrationen
    ISBN: 978-0-9800179-2-2
    Series Statement: Ninth International Conference on Permafrost Volume 1
    Language: English
    Note: Contents Preface Acknowledgments NICOP Organizing Team Members NICOP Sponsors Associate Editors and Reviewers Volume 1 Initial Disturbance and Recovery Measurements from Military Vehicle Traffic on Seasonal and Permafrost Terrain / R.T. Affleck, S.A. Shoop, C.M. Collins, and E. Clark Erosion of the Barrow Environmental Observatory Coastline 2003–2007, Northern Alaska / A. Aguirre, C.E. Tweedie, J. Brown, and A. Gaylord Pore Water and Effective Pressure in the Frozen Fringe During Soil Freezing / S. Akagawa, S. Hiasa, S. Kanie, and S.L. Huang Coastal Processes and Their Influence Upon Discharge Characteristics of the Strokdammane Plain, West Spitsbergen, Svalbard / H.J. Akerman Forecasting Chemical Thawing of Frozen Soil as a Result of Interaction with Cryopegs / V.I. Aksenov, N.G. Bubnov, G.I. Klinova, A.V. Iospa, and S.G. Gevorkyan Permafrost and Cryopegs of the Anabar Shield / S.V. Alexeev, L.P. Alexeeva, and A.M. Kononov A First Estimate of Mountain Permafrost Distribution in the Mount Cook Region of New Zealand’s Southern Alps / S. Allen, I. Owens, and C. Huggel The Perennial Springs of Axel Heiberg Island as an Analogue for Groundwater Discharge on Mars / D.T. Andersen, W.H. Pollard, and C.P. McKay Geotechnical Considerations for Cut-Off Wall in Warm Permafrost / S.L. Anderson, T.G. Krzewinski, and J. Swendseid Water Chemistry of Hydrogenous Taliks in the Middle Lena / N.P. Anisimova and N.A. Pavlova A New Hypothesis on Ice Lens Formation in Frost-Susceptible Soils / L.U. Arenson, T.F. Azmatch, and D.C. Sego Impact of the August 2000 Storm on the Soil Thermal Regime, Alaska North Slope / D.E. Atkinson and L. Hinzman Global Simulation of Permafrost Distribution in the Past, Present, and Future Using the Frost Number Method / T. Aus der Beek and E. Teichert Remote Sensing Data for Monitoring Periglacial Processes in Permafrost Areas: Terrestrial Laser Scanning at the Hinteres Langtalkar Rock Glacier, Austria / M. Avian, A. Kellerer-Pirklbauer, and A. Bauer Permafrost Temperatures and Erosion Protection at Shishmaref, Alaska / M.T. Azelton and J.E. Zufelt Measuring Ice Lens Growth and Development of Soil Strains during Frost Penetration Using Particle Image Velocimetry (GeoPIV) / T.F. Azmatch, L.U. Arenson, D.C. Sego, and K.W. Biggar Evidence of Permafrost Formation Two Million Years Ago in Central Alaska / J.E. Beget, P. Layer, D. Stone, J. Benowitz, and J. Addison Recent Advances in Mapping Deep Permafrost and Gas Hydrate Occurrences Using Industry Seismic Data, Richards Island Area, Northwest Territories, Canada / G. Bellefleur, K. Ramachandran, M. Riedel, T. Brent, and S. Dallimore Massive Ground Ice on the Ural Coast of Baydaratskaya Bay, Kara Sea, Russia / N.G. Belova, V.I. Solomatin, and F.A. Romanenko A Direct Method for Obtaining Thermal Conductivity of Gravel Using TP02 Probes / H. Bing, P. He, N.I. Koemle, and W. Feng The Effect of Near-Freezing Temperatures on the Stability of an Underground Excavation in Permafrost / K.L. Bjella Distribution of Permafrost Types and Buried Ice in Ice-Free Areas of Antarctica / J.G. Bockheim, I.B. Campbell, M. Guglielmin, and J. López-Martínez Estimation of Ice Wedge Volume in the Big Lake Area, Mackenzie Delta, NWT, Canada / J.A. Bode, B.J. Moorman, C.W. Stevens, and S.M. Solomon High Resolution DEM Extraction from Terrestrial LIDAR Topometry and Surface Kinematics of the Creeping Alpine Permafrost: the Laurichard Rock Glacier Case Study (Southern French Alps) / X. Bodin, P. Schoeneich, and S. Jaillet Comparison of Exposure Ages and Spectral Properties of Rock Surfaces in Steep, High Alpine Rock Walls of Aiguille du Midi, France / R. Böhlert, S. Gruber, M. Egli, M. Maisch, D. Brandová, W. Haeberli, S. Ivy-Ochs, M. Christl, P.W. Kubik, and P. Deline Heat and Water Transfer Processes in Permafrost-Affected Soils: A Review of Field- and Modeling-Based Studies for the Arctic and Antarctic (Plenary Paper) / J. Boike, B. Hagedorn, and K. Roth Estimation of Hydraulic Properties in Permafrost-Affected Soils Using a Two-Directional Freeze-Thaw Algorithm / W.R. Bolton, J. Boike, and P.P. Overduin Engineering Solutions for Foundations and Anchors in Mountain Permafrost / C. Bommer, H.R. Keusen, and M. Phillips Carbon, Nitrogen, and Phosphorus Interactions in the Hyporheic Zones of Arctic Streams that Drain Areas of Continuous Permafrost / W.B. Bowden, M.J. Greenwald, BM.N. Gooseff, BJ.P. Zarnetske, BJ.P. McNamara, J. Bradford, and T. Brosten Geomorphology and Gas Release from Pockmark Features in the Mackenzie Delta, Northwest Territories, Canada / R.G. Bowen, S.R. Dallimore, M.M. Côté, J.F. Wright, and T.D. Lorenson Current Capabilities in Soil Thermal Representations Within a Large-Scale Hydrology Model for Regions of Continuous Permafrost / L.C. Bowling, K.A. Cherkauer, and J.C. Adam Effects of Soil Cryostructure on the Long-Term Strength of Ice-Rich Permafrost Near Melting Temperatures /M.T. Bray Warming of Cold Permafrost in Northern Alaska During the Last Half-Century / M.C. Brewer and H. Jin Characterization and Classification of Topsoils as a Tool to Monitor Carbon Pools in Frost-Affected Soils / G. Broll and C. Tarnocai The International Permafrost Association: 1983–2008 / J. Brown, H. French, and C. Guodong Experimental Study of the Thermal Conductivity of Frozen Sediments Containing Gas Hydrates / B.A. Buhanov, E.M. Chuvilin, O.M. Guryeva, and P.I. Kotov Permafrost Dynamics Within an Upper Lena River Tributary: Modeled Impact of Infiltration on the Temperature Field Under a Plateau / S. Buldovich, N. Romanovskiy, G. Tipenko, D. Sergeev, and V. Romanovsky Permafrost Distributions on the Seward Peninsula: Past, Present, and Future / R.C. Busey, L.D. Hinzman, J.J. Cassano, and E. Cassano Soil and Permafrost Properties in the Vicinity of Scott Base, Antarctica / I.B. Campbell and G.G.G.Claridge Patterned Ground Features and Vegetation: Examples from Continental and Maritime Antarctica / N. Cannone and M. Guglielmin Rainfall-Runoff Hydrograph Characteristics in A Discontinuous Permafrost Watershed and Their Relation to Ground Thaw / S.K. Carey and C.M. DeBeer Innovative Designs of the Permafrost Roadbed for the Qinghai-Tibet Railway (Plenary Paper) / G. Cheng, Q. Wu, and W. Ma Does Permafrost Deserve Attention in Comprehensive Climate Models? / J.H. Christensen, M. Stendel, P. Kuhry, V. Romanovsky, and J. Walsh Trace Gas Budgets of High Arctic Permafrost Regions (Plenary Paper) / T.R. Christensen, T. Friborg, and M. Johansson Interannual Variations in Active Layer Thickness in Svalbard / H.H. Christiansen and O. Humlum Experimental Study of the Self-Preservation Effect of Gas Hydrates in Frozen Sediments / E.M. Chuvilin and O.M. Guryeva Effects of Recent Climate Change on High Mountains of Western North America / J.J. Clague A Model of Permafrost Distribution and Disturbance Sensitivity for Denali National Park, Using Soil-Ecological Site Inventory Information / M.H. Clark A Multi-Disciplinary Approach to Assess the Impact of Global Climate Change on Infrastructure in Cold Regions / J. Clarke, C. Fenton, A. Gens, R. Jardine, C. Martin, D. Nethercot, S. Nishimura, S. Olivella, C. Reifen, P. Rutter, F. Strasser, and R. Toumi Freezeback of an Anthropogenic Talik Within Tailings at Nanisivik Mine, Canada / G. Claypool, J.W. Cassie, and R. Carreau Geologic Controls on the Occurrence of Permafrost-Associated Natural Gas Hydrates / T.S. Collett Laboratory Simulations of Martian Debris Flows / F. Costard, E. Védie, M. Font, and J.L. Lagarde Modeling the Erosion of Ice-Rich Deposits Along the Yukon Coastal Plain / N.J. Couture, M.A. Hoque, and W.H. Pollard Dynamics of Patterned Ground Evolution / J.G.A. Croll Legacy and Accomplishments of Frozen Ground Engineering Studies in Alaska 60 Years Ago / M. Cysewski and Y. Shur High-Resolution Surface and Subsurface Survey of a Non-Sorted Circle System / R. Daanen, V. Romanovsky, D. Walker, and M. LaDouceur Effect of Adsorbed Cations on Unfrozen Water in Silty Soil as Det
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  • 58
    Call number: AWI Bio-21-94351
    In: Developments in hydrobiology, 29
    Type of Medium: Monograph available for loan
    Pages: VII, 307 Seiten , Illustrationen
    ISBN: 9061935369
    Series Statement: Developments in hydrobiology 29
    Language: English
    Note: Contents Preface 1. Gunnar Nygaard: A guiding influence on paleolimnological research / by J. Kristiansen 2. Diatoms as indicators of pH: An historical review / by R.W. Battarbee, J.P. Smol & J. Meriläinen Part one: Taxonomy 3. The genus Melosira from soft-water lakes with special reference to northern Michigan, Wisconsin and Minnesota / by K.E. Camburn & J.C. Kingston 4. A new diatom species, Fragilaria acidobiontica, from acidic lakes in northeastern North America / by D.F. Charles 5. Two forms of Tabellaria binalis (Ehr.) Grun. in two acid lakes in Galloway, Scotland / by R.J. Flower Part two: Extant floras 6. Phytoplankton in selected LaCloche (Ontario) lakes, pH 4.2-7.0, with special reference to algaeas indicators of chemical characteristics / by P.M. Stokes & Y.K. Yung 7. The representation of living diatom communities in deep-water sedimentary diatom assemblages in two Maine (U.S.A.) lakes / by D.M. DeNicola 8. Spatial and temporal variability in periphytic diatom communities: Palaeoecological significance in an acidified lake / by V.J. Jones & R.J. Flower Part three: Paleolimnological applications 9. Relationships between diatom assemblages in lake surface-sediments and limnological characteristics in southern Norway / by D.S. Anderson, R.B. Davis & F. Berge 10. Diatom evidence for neutralization in acid surface mine lakes / by R.B. Brugam & M. Lusk 11. The recent history of a naturally acidic lake (Cone Pond, N.H.) / by J. Ford 12. East african diatoms and water pH / by F. Gasse 13. Acidification of small lakes in Finland documented by sedimentary diatom and chrysophycean remains / by K. Tolonen, M. Liukkonen, R. Harjula & A. Patila 14. Applications of multivariate techniques to infer limnological conditions from diatom assemblages / by P. Huttunen & J. Meriläinen 15. A sedimentary diatom record of severe acidification in Lake Blamissusjon, N. Sweden, through natural soil processes / by I. Renberg 16. Diatom responses to acidification and lime treatment in a clear-water lake: Comparison of two methods of analysis of a diatom stratigraphy / by H. Simola 17. Acidification of four lakes in the Federal Republic of Germany as reflected by diatom assemblages, cladoceran remains and sediment chemistry / by K. Arzet, D. Krause-Dellin & C. Steinberg 18. Late-glacial and Holocene acidity changes in Adirondack (N.Y.) lakes / by D.R. Whitehead, D.F. Charles, S.J. Jackson, S.E. Reed & M.C. Sheehan 19. Chrysophycean microfossils as indicators of lakewater pH / by J.P. Smol Part four: Overview 20. The use of sedimentary remains of siliceous algae for inferring past chemistry of lake water-problems, potential and research needs / by R.B. Davis & J.P. Smol Indices Index of lakes Index of genera Subject index
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  • 59
    Call number: AWI Bio-21-94355
    Type of Medium: Monograph available for loan
    Pages: 168 Seiten , Illustrationen
    ISBN: 9783906166568
    Series Statement: Diatom monographs 9
    Language: English
    Note: CONTENTS ABSTRACT 1. INTRODUCTION 2. AIMS AND SCOPE 3. NATURAL AND ANTHROPOGENIC ACIDIFICATION AND ITS ECOLOGICAL CONSEQUENCES 3.1. The role of water pH 3.2. Description of natural and anthropogenic acid sources 3.3. Anthropogenic acidification and its ecological consequences 3.4. Diatoms as indicators of water acidity and related factors 4. MATERIAL AND METHODS 4.1. Field samples 4.2. Laboratory methods 4.3. Data analysis 5. DESCRIPTION OF THE STUDY AREAS 6. RESULTS 6.1. Diatom community patterns vs. water chemistry in relation to different water types 6.2. Diatom community patterns in relation to altitude 6.3. Diatom community patterns in relation to dijf'erent geographical regions in Poland and Finland 6.4. Diatoms as indicators of pH, alkalinity and TOC 6.5. Restoration and recovery of acidified aquatic ecosystems 6.5.1. Diatoms as indicators of restoration: effect of water neutralization 6.5.2. Diatoms as indicators of lake recovery 7. DISCUSSION 8. NOTES ON AUTECOLOGY OF SELECTED DIATOM TAXA 9. SUMMARY AND CONCLUSIONS ACKNOWLEDGEMENTS REFERENCES APPENDIX (Codes of diatom taxa used in the graphs and tables) PLATES
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  • 60
    Call number: AWI Bio-21-94354
    Type of Medium: Monograph available for loan
    Pages: 376 Seiten , Illustrationen
    ISBN: 9783906166551 , 3906166554
    Series Statement: Diatom monographs 8
    Language: English
    Note: CONTENTS Foreword 1. Introduction (Krystyna Wasylikowa) 2. History of research (Herbert E. Wright, Jr) 2.1. Introduction 2.2. The 1963 campaign 2.3. The 1970 campaign 2.4. Post-1970 analytical work 3. Geologie and climatic setting of the sites (Herbert E. Wright, Jr) 4. Outline of the Vegetation of western Iran (Willem van Zeist) 4.1. Introduction 4.2. The regional Vegetation 4.3. Zeribar marsh Vegetation 5. Coring and sampling methods (Herbert E. Wright, Jr and Krystyna Wasylikowa) 5.1. Introduction 5.2. Lake Zeribar 5.3. Lalabad and Nilofar 5.4. Mirabad landslide lakes 5.5. Sub-sampling 6. Description of Sediments (Krystyna Wasylikowa and Herbert E. Wright, Jr) 7. Lake Zeribar: dating and Sedimentation rate (Adam Walanus and Krystyna Wasylikowa) 7.1. Introduction 7.2. Age-depth curves 7.3. Sedimentation rate 8. Late Pleistocene and Holocene Vegetation at Zeribar (Willem van Zeist) 8.1. Introduction 8.2. The surface-sample study 8.3. Late Pleistocene 8.4. Holocene 8.5. Comparison with other pollen sites 9. Paleoecology of Lake Zeribar in the Late Pleistocene and Holocene reconstrueted from the flora of aquatic and marsh plants (Krystyna Wasylikowa) 9.1. Introduction 9.2. Methods 9.3. Principles of palaeoecological interpretation of plant-macrofossil assemblages from Lake Zeribar 9.4. Pleniglacial lake Vegetation 9.5. Lake Vegetation during the decline of the Pleniglacial and in the Lateglacial 9.6. Lake Vegetation in the Holocene 9.7. Summary of plant-macrofossil stratigraphy 9.8. Notes on the identification of plant macrofossils from Lake Zeribar (Krystyna Wasylikowa and Felix Yu. Velichkevich) 10. Diatom paleolimnology of Lake Zeribar, Iran, in the Late Pleistocene and Holocene (Andrzej Witkowski, Kazimierz Wasylik, Horst Lange-Bertalot, Malgorzata Bak and Karolina Derwich) 10.1. Introduction 10.2. Material and methods 10.3. Results 10.4. Discussion 10.5. Conclusions (Plates) 11. Oospores of Charales in Late Pleistocene and Holocene Sediments of Lake Zeribar, Iran (Andrzej Hutorowicz) 11.1. Introduction 11.2. Materials and methods 11.3. Systematic description of the charophyte species identified 11.4. Palaeoparameters of water in Lake Zeribar 11.5. Charophyte Vegetation at the decline of the Pleniglacial and in the Lateglacial 11.6. Charophyte Vegetation at the decline of the Lateglacial and the beginning of the Holocene 11.7. Charophyte Vegetation in the Holocene 11.8. Summary of charophyte Vegetation stratigraphy 12. Molluscs of Late Quaternary lacustrine Sediments of Lake Zeribar (Iran) (Stefan W. Alexandrowicz) 12.1. Introduction 12.2. Material and methods 12.3. Species of molluscs 12.4. Assemblages of molluscs 12.5. Interpretation 13. Charred plant macrofossils in Lake Zeribar Sediments (Jerzy J. Langer andKrystyna Wasylikowa) 13.1. Introduction 13.2. Charred remains in Lake Zeribar Sediments 13.3. Physico-chemical analyses 13.4. Conclusions of physico-chemical analyses 13.5. Palaeoecological interpretation 14. Variations in effective moisture at Lake Zeribar, Iran during the last glacial period and Holocene, inferred from the δ18O values of authigenic calcite (Lora R. Stevens, Emi Ito, and Herbert E. Wright, Jr) 14.1. Introduction 14.2. Climatic setting 14.3. Oxygen-isotope setting 14.4. δ18O values as proxies for hydrology and effective moisture 14.5. Methods 14.6. Results 14.7. Discussion 14.8. Conclusions 15. The Lake Zeribar palaeoecology: a synthesis (Krystyna Wasylikowa, Willem van Zeist, Herbert E. Wright, Jr, Lora R. Stevens, Andrzej Witkowski, Adam Walanus, Andrzej Hutorowicz, Stefan W. Alexandrowicz, and Jerzy J. Langer) 15.1. Introduction 15.2. Middle Pleniglacial (ca. 48,000-38,000 cal. yr BP) 15.3. Upper Pleniglacial (ca. 38,000-15,400 cal yr BP) 15.4. The Lateglacial (ca. 15,400-12,000 cal.yr BP) 15.5. Early Holocene (ca. 12,000-6900 cal. yr BP) 15.6. Middle and Late Holocene from 6900 to 1400 cal. yr BP 15.7. Summarizing remarks References Appendix 1 (Depth and age of samples used for various analyses) Appendix 2 (List of plant taxa identified on the basis of macrofossils found in sediment cores 63J, 70A, 63B, 70B, and 63C) Appendix 3 (List of diatom species identified in the sediment cores 63J, 70A, and 70B) PlatesI-XII
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  • 61
    Monograph available for loan
    Monograph available for loan
    Canberra [u.a.] : Australian Biological Resources Study [u.a.] | Hobart : Australian Antarctic Division
    Call number: AWI Bio-21-94359
    Type of Medium: Monograph available for loan
    Pages: VIII, 563 Seiten , Illustrationen
    ISBN: 0642568359 (hbk.) , 9780642568359 (hbk.)
    Language: English
    Note: CONTENTS Contributors Acknowledgements 1. Introduction / Harvey J. Marchant & Fiona J. Scott Systematic Arrangement of Taxa 2. Diatoms / Fiona J. Scott & David P. Thomas 3. Dinoflagellates / Andrew McMinn & Fiona J. Scott 4. Silicoflagellates / Gustaaf M. Hallegraeff 5. Haptophytes: Order Prymnesiales / Harvey J. Marchant & Fiona J. Scott & Andrew T. Davidson 6. Haptophytes: Order Coccolithophorales / Claire S. Findlay, Jeremy R. Young & Fiona J. Scott 7. Chrysophytes / Harvey J. Marchant & Fiona J. Scott 8. Prasinophytes / Harvey J. Marchant 9. Chlorophytes / Fiona J. Scott 10. Cryptophytes / Fiona J. Scott & John van den Hojf 11. Euglenoids / Fiona J. Scott 12. Cyanophytes / Harvey J. Marchant 13. Choanoflagellates / Harvey J. Marchant 14. Ciliates / Wolfgang Petz 15. Protista Incertae Sedis / Fiona J. Scott & Harvey J. Marchant Glossary Bibliography Copyright Permission Index
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  • 62
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/18
    In: CRREL Report, 82-18
    Description / Table of Contents: Snow and ice control on highways has come to rely heavily on the use of sodium chloride to maintain a trafficable surface for unimpeded movement. Empirical approaches have led to a wide range of application rates, some clearly excessive, but justified on the ground of safety and expediency. The combination of environmental degradation from the huge quantities of salt entering the environment, along with the increased cost of salt itself and the cost of its application have spurred the search for more precise knowledge of the proper amount of salt to apply to a pavement, considering a range of environmental, traffic and chemical parameters. Since controlled tests in the field are extremely difficult to make, a circular test track of three test pavements, dense-graded asphaltic concrete (DGA), open-graded asphaltic concrete (DGA) and portland cement concrete (PCC), was constructed in a coldroom. Natural snow and ice were applied to the pavements and an instrumented slipping wheel was driven over the surfaces to generate frictional forces. These forces were measured and then used to evaluate the response to salt application with time for three test temperatures. OGA had the lowest friction values at a temperature near the freezing point, but higher initial values or more rapidly increasing values than DGA and PCC following salt application at the two lower temperatures. Optimum application rate of salt on PCC and DGA lies between 100 and 300 lb/lane mile (LM), and a higher rate resulted in slight or no improvement in friction. DGA showed anomalous results: lower friction for 300 Ib/LM and higher friction for both 100 and 500 Ib/LM.
    Type of Medium: Series available for loan
    Pages: vi, 55 Seiten , Illustrationen
    Series Statement: CRREL Report 82-18
    Language: English
    Note: CONTENTS Abstract Preface Introduction Objectives Background Approach Influencing factors Field factors Laboratory Laboratory trafficking tests Force measurement and coefficient of friction Test tire slip Surface friction gauge Test procedure British portable tester Experimental results Conclusions Recommendations Literature cited Appendix A. Test pavements Appendix B. Pennsylvania State University field study Appendix C. Rochester Institute of Technology field study
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  • 63
    Monograph available for loan
    Monograph available for loan
    Cambridge : Natural Environment Research Council, British Antarctic Survey
    Call number: AWI Bio-21-94363
    Type of Medium: Monograph available for loan
    Pages: 159 Seiten
    ISBN: 085665115X
    Language: English
    Note: CONTENTS INTRODUCTION PROCESSES AND OTHER STRUCTURES ON THE DIATOM VALUE SHAPE, SYMMETRY AND SIZE SPECIES DESCRIPTIONS AND KEYS GROUP 1 - DISTINCTIVE GENERA GROUP 2 - DISCOID GENERA REFERENCES
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  • 64
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/13
    In: CRREL Report, 82-13
    Description / Table of Contents: Frost heave is analyzed for the common case in which some ice penetrates the soil. In this situation, heave is due to the accumulation of soil-free ice just within the frozen zone, behind a frozen fringe of finite thickness. Heat and mass transport within and across that fringe are crucial processes in the dynamics of heave. This analysis concentrates on activity within the fringe, also connecting that activity to heat and mass flows in the more frozen and unfrozen zones. Each component in a set of governing differential equations is developed from rational physics and thermodynamics, using previous experimental work. It is assumed that the soil ice grows through interconnected interstices; hence it constitutes and can move as a rigid body. When the assumption is translated into mathematical terms, it completes the governing equations. The model resulting from these considerations is a one-dimensional finite element computer program that solves the equations for arbitrary initial and boundary conditions. The model is used to simulate the heave history of a hypothetical soil column frozen unidirectionally and subjected to a surcharge. The results are gratifying in that they predict qualitatively the characteristics of numerous laboratory observations. Some questions about the completeness of the theory remain, and strict verification of the model awaits further experimentation and better parameter identification.
    Type of Medium: Series available for loan
    Pages: iii, 11 Seiten , Illustrationen
    Series Statement: CRREL Report 82-13
    Language: English
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  • 65
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-81/12
    In: CRREL Report, 81-12
    Description / Table of Contents: Revegetation techniques along the trans-Alaska pipeline as employed by Alyeska Pipeline Service Company during the 1975-1978 summers were observed. Objectives included determining the success of treatments, identifying problem areas, and noticing long-term implications. Observations and photographs at 60 sites located along the trans-Alaska pipeline indicated frequent occurrence of successful revegetation as well as frequent problems, such as erosion, slope instability, poor scheduling of seed application, occurrence of weed species, failure to optimally reuse topsoil and fine-grained soil, and low rates of native species reinvation. Alyeska's visual impact engineering was observed to be very successful, as shown by high first-season survival. However, a related program for establishing willow cuttings was unsuccessful in 1977 but appeared very promising in 1978 largely due to improved management and more favorable growing conditions. Terrain disturbances due to the construction of the fuel gas line, snowpads, and oil spills were examined to identify and describe related environmental impacts on natural vegetation. Proper construction and use of snowpads minimized the extent and severity of disturbance. Crude oil spills, although damaging to vegetation did not cause total kill of vegetation, and certain types of spills may have only short-term effects. Results of restoration research by CRREL along the trans-Alaska pipeline are discussed.
    Type of Medium: Series available for loan
    Pages: 115 Seiten , Illustrationen
    Series Statement: CRREL Report 81-12
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Revegetation procedures 1975-1978 construction seasons Willow cutting program Visual impact engineering program Selected terrain disturbances Fuel gas line and snowpads Island Lake and oil line snowpads Oil spills and revegetation CRREL restoration sites Conclusions Recommendations Literature cited Appendix A: List of sites observed during 1975 Appendix B: Annotated photographs of permanent revegetation observation sites-1975-1978 Appendix C: Photographic record of fuel gas line observation sites
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  • 66
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-80/31
    In: CRREL Report, 80-31
    Description / Table of Contents: Ice accretion on structures built on the earth’s surface is discussed. Sources of water are the atmosphere or water bodies near or surrounding the structure. Ice types include frost, rime, glaze, and spray; properties and conditions governing their formation are presented. Methods of estimating accretion rates and total accretion on structures are given, and extracts from U.S. and Canadian codes for ice and wind loads on structures are included. Techniques for preventing or removing ice accretion are presented.
    Type of Medium: Series available for loan
    Pages: iv, 18 Seiten , Illustrationen
    Series Statement: CRREL Report 80-31
    Language: English
    Note: CONTENTS Abstract Preface 1. Types of ice accretion a. Frost b. Rime c. Glaze d. Spray ice 2. Conditions governing type of accreted ice a. Meteorological b. Structural 3. Accretion rates a. Fundamentals b. Effect of height c. Geographical distribution 4. Spray icing 5. Structural design factors a. Dead loads b. Wind field in the boundary layer c. Windloads 6. Techniques for minimizing structural icing 7. Data collection needs 8. Literature cited
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  • 67
    Dissertations
    Dissertations
    Potsdam : Universität Potsdam
    Call number: AWI G3-22-94736
    Type of Medium: Dissertations
    Pages: IX, 190 Seiten , Illustrationen
    Language: English
    Note: Dissertation, Universität Potsdam, 2008 , Table of contents Kurzfassung Abstract Chapter 1: Introduction 1.1 Scientific background 1.1.1 Arctic environmental dynamics 1.1.2 Freshwater ostracods and their use in palaeoenvironmental studies 1.1.3 Permafrost and periglacial environment 1.2 Aims and approaches 1.3 Study region 1.3.1 Study sites 1.3.2 Geological characteristics 1.3.3 Climate 1.3.4 Periglacial freshwaters 1.4 Synopsis Chapter 2: Arctic freshwater ostracods from modern periglacial environments in the Lena River Delta (Siberian Arctic, Russia): geochemical applications for palaeoenvironmental reconstructions 2.1 Abstract 2.2 Introduction 2.3 Study area and types of water bodies 2.4 Materials and methods 2.5 Results 2.5.1 Physico-chemical characteristics of the ostracod habitats 2.5.2 Ostracod taxonomy and environmental ranges of their habitats 2.5.3 Ostracod geochemistry 2.6 Discussion 2.6.1 Taxonomy and ecology of ostracods 2.6.2 Element ratios in ostracods and ambient waters 2.6.3 Stable isotopes in ostracods and ambient waters 2.7 Conclusions Chapter 3: Evaporation effects as reflected in freshwaters and ostracod calcite from modern environments in Central and Northeast Yakutia (East Siberia, Russia) 3.1 Abstract 3.2 Introduction 3.3 Study area 3.4 Material and methods 3.4.1 Field work 3.4.2 Water analyses 3.4.3 Ostracod analyses 3.5 Results 3.5.1 Physico-chemical characteristics of the lakes and ponds 3.5.2 Ostracod taxonomy and environmental ranges 3.5.3 Stable isotopes in host waters and ostracod calcite 3.5.4 Element ratios in host waters and ostracod calcite 3.6 Discussion 3.6.1 Physico-chemical characteristics of the lakes and ponds 3.6.2 Ostracod taxonomy, biogeography, and environmental ranges 3.6.3 Stable isotopes in ostracod calcite 3.6.4 Element ratios in ostracod calcite 3.7 Conclusions Chapter 4: Eemian and Late Glacial/Holocene palaeoenvironmental records from permafrost sequences at the Dimitri Laptev Strait (NE Siberia, Russia) 4.1 Abstract 4.2 Introduction 4.3 Regional setting 4.4 Material and methods 4.4.1 Field methods and cryolithology 4.4.2 Geochronology 4.4.3 Sedimentology and stable isotopes 4.4.4 Palaeoecological proxies 4.5 Results 4.5.1 Geochronology, lithostratigraphy, sedimentology, and cryolithology 4.5.1.1 Eemian sequences 4.4.1.2 Late Glacial/Holocene sequences 4.5.2 Stable isotope ground ice records 4.5.3 Pollen studies 4.5.3.1 Eemian sequences 4.5.3.2 Late Glacial/Holocene sequences 4.5.4 Ostracod studies 4.5.4.1 Eemian sequences 4.5.4.2 Late Glacial/Holocene sequences 4.6 Discussion and Interpretation 4.6.1 Local palaeoenvironmental changes during the Eemian 4.6.2 Local palaeoenvironmental changes during the Late Glacial/Holocene 4.6.3 Palaeoenvironmental interpretation of ostracod calcite δ18O data 4.7 Conclusions Chapter 5: Synthesis 5.1 Taxonomy and ecology of ostracods 5.2 Geochemistry of ostracods 5.3 Indicator potential of freshwater ostracods in late Quaternary permafrost deposits 5.4 Outlook Appendix I: Freshwater ostracodes in Quaternary permafrost deposits in the Siberian Arctic I.1 Abstract I.2 Introduction I.3 Study area and geological background I.4 Materials and methods I.5 Results and interpretations I.5.1 Ostracode zone I I.5.2 Ostracode zone II I.5.3 Ostracode zone III I.5.4 Ostracode zone IV I.5.5 Ostracode zone V I.5.6 Ostracode zone VI I.6 Conclusions 125 Appendix II: Palaeoenvironmental dynamics inferred from late Quaternary permafrost deposits on Kurungnakh Island, Lena Delta, Northeast Siberia, Russia II.1 Abstract II.2 Introduction II.3 Regional setting II.4 Material and methods II.4.1 Sedimentology and cryolithology II.4.2 Geochronology II.4.3 Stable isotopes II.3.4 Palaeoecological proxies II.5 Results II.5.1 Lithostratigraphy, sedimentology, and cryolithology II.5.1.1 Unit I II.5.1.2 Unit II II.5.1.3 Unit III II.5.1.4 Unit IV II.5.1.5 Unit V II.5.2 Geochronology II.5.3 Oxygen and hydrogen stable isotopes of ground ice II.5.4 Palynological studies II.5.5 Plant macrofossils II.5.6 Ostracod remains II.5.7 Insect remains II.5.8 Mammal remains II.6 Discussion II.6.1 Local stratigraphic and palaeoenvironmental interpretation II.6.2 Beringian palaeoenvironmental context II.7 Conclusions Supplementary data A Supplementary data B Supplementary data C Appendix III: Data tables from Chapters 2 and 3 Appendix IV: References Acknowledgements
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  • 68
    Monograph available for loan
    Monograph available for loan
    Berlin : Springer
    Associated volumes
    Call number: AWI A11-23-95344
    In: Physics and chemistry in space : Planetology, 18
    Type of Medium: Monograph available for loan
    Pages: IX, 165 Seiten , Illustrationen , 24 cm
    ISBN: 3540506853 , 3-540-50685-3 , 0387506853 , 0-387-50685-3 , 9783642486289
    Series Statement: Physics and chemistry in space : Planetology 18
    Language: English
    Note: Contents 1 Noctilucent Clouds 1.1 Introduction 1.2 How, When and Where Noctilucent Clouds Are Seen 1.3 Amateur Observations 1.4 Cloud Types 1.5 Structure of the Upper Atmosphere 2 History 2.1 Introduction 2.2 The Discovery of the "Shining Night-Clouds" 2.3 Measurements of Noctilucent Clouds 2.4 The Middle Period of Noctilucent Cloud Research 3 Observations from Ground Level 3.1 Introduction 3.2 The Geometry of Twilight Scattering 3.3 Latitude of Observation 3.4 Absorption of Light in the Atmosphere 3.5 Height of Noctilucent Clouds 3.6 Drift Motions 3.7 Wave Structure 4 Spectrophotometry 4.1 Introduction 4.2 Spectroscopic Observations 4.3 Spectrophotometry from Ground Level 4.4 Rocket-Borne Photometers 4.5 Spectrophotometry from Satellites 4.6 Conclusions About Cloud Particle Sizes 5 Polarimetry 5.1 Introduction 5.2 Polarization by Scattering 5.3 Measurement of Polarized Light 5.4 Polarization Measured from Ground Level 5.5 Measurements of Polarization from Rockets 5.6 Conclusions About Cloud Particle Sizes 6 Rocket-Borne Sampling 6.1 Introduction 6.2 Flights over Sweden in 1962 and 1967 6.3 Flights over Sweden in 1970 and 1971 6.4 Flights over Canada in 1968 and 1970 6.5 Collectors Flown by Max-Planck-Institut Researchers, 1968 to 1971 6.6 Conclusions About Cloud Particle Sizes 7 Variation of Occurrence 7.1 Introduction 7.2 Sunspot Cycle 7.3 Seasonal Frequency of Noctilucent Clouds 7.4 Climatology of the Mesosphere 8 Other Observations 8.1 Introduction 8.2 Association with Hydroxyl Airglow Emission 8.3 Association with Aurora and Planetary Magnetic Activity 8.4 Lunar Effects 8.5 Lidar Observations 8.6 Artificial Noctilucent Clouds 8.7 Abnormal Observations 9 Environment of Noctilucent Clouds 9.1 Introduction 9.2 Atmospheric in Temperature 9.3 D-Region 9.4 Dust 9.5 Water Vapour in the Mesosphere 9.6 Radiation 9.7 Rates of Growth 9.8 Nucleation of Ice 9.9 Settling of Particles 9.10 Modelling Noctilucent Clouds by Numerical Simulation 10 The Nature of Noctilucent Clouds 10.1 Introduction 10.2 Formation in Noctilucent Clouds 10.3 Growth of Noctilucent Cloud Particle 10.4 Evaporation of Noctilucent Cloud Particles 10.5 The Relationship Between Polar Mesospheric Clouds and Noctilucent Clouds 10.6 Summary 11 Bibliography A) Before 1900 B) 1900-1950 C) Bibliography since 1950 Appendix 1: Atmospheric Refraction . Appendix 2: Atmospheric Transmission Along Grazing Pays Subject Index Name Index
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  • 69
    Call number: ZSP-201-80/19
    In: CRREL Report, 80-19
    Description / Table of Contents: During the period 1975-1978 the Federal Highway Administration sponsored a series of environmental engineering in­vestigations along the Yukon River to Prudhoe Bay Haul Road. In 1976 the Department of Energy joined these in­vestigations with a series of ecological projects which continue to the present. Both agencies research efforts were con­ducted on a cooperative basis with CRREL’s in-house research program. The objectives of the research focused on 1) an evaluation of the performance of the road, 2) an assessment of changes in the environment associated with the road, 3) documentation of flora and vegetation along the 577-km-long transect, 4) methodologies for revegetation and restoration, and 5) an assessment of biological parameters as indicators of environmental integrity. In support of these objectives, specific studies were undertaken that investigated the climate along the road, thaw and subsidence beneath and adjacent to the road, drainage and side slope performance, distribution and properties of road dust, vegetation distribution, vegetation disturbance and recovery, occurrence of weeds and weedy species, erosion and its control, revegetation and restoration, and construction of the fuel gas line. This report presents background, information on the region, detailed results of the road thaw subsidence and dust investigations, and summaries of revegetation, fuel gas line, vegetation distribution, soil, and weed studies.
    Type of Medium: Series available for loan
    Pages: xv, 187 Seiten , Illustrationen
    Series Statement: CRREL Report 80-19
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Chapter 1. The road and its environment Introduction General physiography Regional climate Surficial and bedrock geology Permafrost and ground ice General biota Vegetation Floristic survey Vegetation mapping Soils and mapping Chapter 2. Roadbed performance and associated investigations Roadbed investigations Roadbed performance Performance of drainage features Performance of sideslopes Conclusions from road, drainage and sideslope performance studies Fuel gas line construction Chapter 3. Distribution and properties of road dust along the northern portion of the Haul Road Introduction Methods Results of wind direction and velocity measurements Dust load and distribution Particle size analyses of dust Chemical composition properties of dust and related samples Soil cation composition Dust impacts on vegetation Discussion and conclusions Chapter 4. Revegetation and restoration investigations Introduction Revegetation approaches Alyeska erosion control and revegetation program Weeds and weedy plants Performance of revegetation Alyeska willow cutting program CRREL restoration experiments Conclusions Revegetation recommendations General report recommendations Literature cited Appendix A: General environmental guidelines applicable to subarctic and arctic road construction Appendix B: University-based studies along the Yukon River-Prudhoe Bay Haul Road Appendix C: CRREL maps of Haul Road showing locations of all study Sites Appendix D: Additional Haul Road cross-sectional profiles Appendix E: Clay mineralogy of road-related materials Appendix F: List of reports in the Joint State/Federal Fish and Wildlife Ad­visory Team series
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  • 70
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-80/15
    In: CRREL Report, 80-15
    Description / Table of Contents: This report discusses the time constraints on measuring the thermal resistance (R-value) of building components. Temperature changes on either side of a building component perturb measurement accuracy. Long measurement times and measurement times corresponding to a consistent diurnal cycle can be satisfactory; however, individual temperature changes cause significant error for shorter measurement periods. This report shows how to scale the thermal properties of individual constituent materials in a building element to determine its characteristic thermal time constant. The report then demonstrates the size of measurement error resulting from a variety of changes in temperature with representative walls of different time constants.
    Type of Medium: Series available for loan
    Pages: iii, 30 Seiten , Illustrationen
    Series Statement: CRREL Report 80-15
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors Introduction Field measurement and analysis of transient heat flow A closer look at handling the constraints Random change Step change Ramp change Application of theory Literature cited Appendix A. Percentage error from a step input Appendix B. Time constraints of sample walls Appendix C. Percentage error from a ramp input Appendix D. Percentage error from a sinusoidal input Appendix E. Percentage error programs for a Hewlett-Packard HP-25 calculator Appendix F. Experimental determination of time constants Appendix G. Derivation of time constant formula for multiple layers
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  • 71
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-80/16
    In: CRREL Report, 80-16
    Description / Table of Contents: Eight species of loricate choanoflagellates (Acanthoccidae), Acanthoecopsis spiculifera, Bicosta spinifera, Bicosta antennigera, Callicantha simplex, Calliacantha multispina aff., Crinolina aperta, Diaphanoeca multionnulata, and Parvicorbicula socialis, were observed in samples obtained from the Weddell Sea during the austral summer, 1977. D. multiannulata was described for the first time from these samples; the other organisms have either been described previously or are being described at this time. The distribution of most species within the Weddell Sea was widespread. The distributional, environmental, and morphological range of A. spiculifera, B. spinifera, C. aperta, and P. socialis was expanded. Habitats in which choanoflagellates were found included the water column, the edges of ice floes, ponds on ice floes, and the interiors of ice floes. The presence of choanoflagellates within the ice indicates that there may be a closely coupled trophic relationship with the other two biological components of the ice community, the ice algae and the bacteria. The presence in the ice of seven species with both a caudal appendage and anterior projections suggests a positive relationship between this lorica configuration and the ice habitat. Mechanisms of variance of transverse costal diameters between genera may be useful to the taxonomy and phylogeny of this family.
    Type of Medium: Series available for loan
    Pages: vi, 26 Seiten , Illustrationen
    Series Statement: CRREL Report 80-16
    Language: English
    Note: CONTENTS Introduction Literature review Objectives Materials and methods Results Observations Distribution and environmental tolerances Discussion Morphology Distribution Habitat Summary Conclusions Recommendations for future work Literature cited Appendix A Type descriptions of Acanthoecidae collected from the Weddell Sea
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  • 72
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-80/17
    In: CRREL Report, 80-17
    Description / Table of Contents: Construction pads made of snow were used to build two sections of the Trans Alaska Pipeline and a small gas pipeline during the winter of 1975-76. Construction during the winter has become increasingly common in the Arctic. Surface travel and the use of heavy construction equipment on the unprotected tundra have been severely restricted, even during the winter, so the use of temporary winter roads and construction pads built of snow and ice has been advocated and is being adopted. The three snow construction pads mentioned above were the first snow roads and construction pads used on a large scale in Alaska. Snow roads and construction pads have two objectives: to protect the underlying vegetation and upper layers of the ground, and to provide a hard, smooth surface for travel and the operation of equipment. Several types have been built, and a brief discussion is given of their history and classification systems. The three snow construction pads used in construction of the Trans-Alaska Pipeline and the small gas pipeline in 1975-76 were visited and observed while in use. The Globe Creek snow pad, about 50 miles north of Fairbanks, was built primarily of manufactured snow hauled to the site and watered. With very high densities this pad withstood heavy traffic and use by heavy construction equipment except on one steep slope. There, the use of tracked vehicles and vehicles without front wheel drive disaggregated the snow on and near the surface so that vehicles without front wheel drive were unable to climb the hill. The Toolik snow pad, just north of the Brooks Range, was built of compacted snow and proved capable of supporting the heaviest traffic and construction equipment. The fuel gasline snow pad ran from the northern Brooks Range to the Arctic Coast and also proved capable of supporting the necessary traffic. Both the Toolik snow pad and the fuel gasline snow pad failed in very early May because of unseasonably warm and clear weather before the associated construction projects were completed. However, the three snow pads must be considered successful. Common problems were the lack of snow, slopes, unseasonably warm spring weather, and inexperience on the part of contractors and construction personnel.
    Type of Medium: Series available for loan
    Pages: v, 28 Seiten , Illustrationen
    Series Statement: CRREL Report 80-17
    Language: English
    Note: CONTENTS Abstract Preface Introduction History of snow and ice roads Classification of snow and ice roads Snow pads used by Alyeska during the winter of 1975-1976 The Globe Creek snow pad The Toolik snow pad The gasline snow pad Summary and conclusions Literature cited
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  • 73
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-80/13
    In: CRREL Report, 80-13
    Description / Table of Contents: Specimens prepared from various types of ice without introducing excessive defects were tested at temperatures ranging from -2° to -190°C. These tests indicated slightly higher Charpy values at lower temperatures and in more highly dispersed material concentrations. Three modes of fracture occurred during testing. Depending on the temperature and the material composition, either of the first two modes, normal fracture or multiple fracture, will appear and will show a normal frequency distribution of Charpy values in each type of ice. The third mode, fracture from both ends,which frequently occurred in the NH4F doped ice, gave Charpy values two to five times higher than the mean value for normal fracture. It can, therefore, be concluded that certain types of doping can alter the mode of fracture, through which drastic modifications of impact resistance my be possible.
    Type of Medium: Series available for loan
    Pages: iii, 13 Seiten , Illustrationen
    Series Statement: CRREL Report 80-13
    Language: English
    Note: Contents Abstract Preface lntroduction Experimental Sample preparation Testing procedure Results General features Commercial Ice Notched commercial ice Sanded commercial ice Pure ice Single crystal ice Snow-ice Colloidal alumina-dispersed ice Colloidal silica.dispersed ice NH4F doped ice HF doped ice Discussion Literature cited
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  • 74
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-80/11
    In: CRREL Report, 80-11
    Description / Table of Contents: Four types of roof leaks occurred at a new school building in Chevak, Alaska: 1) blowing snow entered the roof through eave vents and then melted, 2) slush and ice in roof valleys caused meltwater to overflow the valley flash­ing and run into the building, 3) water entered at a roof/wall intersection and 4) in many areas water entered through gaps in the sloping plywood deck. Sealing the eave vents made it impossible for blowing snow to enter the roof at the eaves. Electric heat tapes eliminated the valley icing problem. Missing flashing was responsible for the roof/wall intersection leaks. The absence of a vapor barrier in the roof was the cause of many leaks. We recom­mended that the roof be repaired from the exterior by removing component elements down to the plywood deck,installing an adhered continuous vapor barrier and reassembling the roof. An alternative roof cladding of compos­ition shingles was discussed as was conversion to a “cold roof.” The roof was repaired and modified following our recommendations, and problems appear to have been solved.
    Type of Medium: Series available for loan
    Pages: iv, 12 Seiten , Illustrationen
    Series Statement: CRREL Report 80-11
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors Introduction Description of school Roof problems Snow infiltration leaks Valley leaks Intersection leaks Condensation leaks Tests to verify the cause of condensation leaks Eliminating the condensation leaks Recommendations for eliminating condensation leaks Repairing existing roof An alternative roof cladding The "cold roof" alternative Repairs and modifications Summary and conclusions
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  • 75
    Monograph available for loan
    Monograph available for loan
    Amsterdam : Elsevier
    Call number: AWI G2-21-94484
    Description / Table of Contents: Although it is generally accepted that the Arctic Ocean is a very sensitive and important region for changes in the global climate, this region is the last major physiographic province of the earth whose short-and long-term geological history is much less known in comparison to other ocean regions. This lack of knowledge is mainly caused by the major technological/logistic problems in reaching this harsh, ice-covered region with normal research vessels and in retrieving long and undisturbed sediment cores. During the the last about 20 years, however, several international and multidisciplinary ship expeditions, including the first scientific drilling on Lomonosov Ridge in 2004, a break-through in Arctic research, were carried out into the central Artic and its surrounding shelf seas. Results from these expeditions have greatly advanced our knowledge on Arctic Ocean paleoenvironments. Published syntheses about the knowledge on Arctic Ocean geology, on the other hand, are based on data available prior to 1990. A comprehensive compilation of data on Arctic Ocean paleoenvironment and its short-and long-term variability based on the huge amount of new data including the ACEX drilling data, has not been available yet. With this book, presenting (1) detailed information on glacio-marine sedimentary processes and geological proxies used for paleoenvironmental reconstructions, and (2) detailed geological data on modern environments, Quaternary variability on different time scales as well as the long-term climate history during Mesozoic-Tertiary times, this gap in knowledge will be filled.
    Type of Medium: Monograph available for loan
    Pages: XIV, 592 Seiten , Illustrationen
    Edition: First edition
    ISBN: 9780444520180
    Series Statement: Developments in marine geology 2
    Language: English
    Note: Contents Preface Acknowledgements List of Abbreviations Part 1: Introduction and Background Chapter 1. Introduction to the Arctic: Significance and History 1.1 The Arctic Ocean and Its Significance for the Earth's Climate System 1.2 History of Arctic Ocean Research 1.3 Plate Tectonic Evolution and Palaeogeography 1.4 Glaciations in Earth's History Chapter 2. Modern Physiography, Hydrology, Climate, and Sediment Input 2.1 Bathymetry and Physiography 2.2 Oceanic Circulation Pattern and Water-Mass Characteristics 2.3 Sea-Ice Cover: Extent, Thickness, and Variability 2.4 Primary Production and Vertical Carbon Fluxes in the Arctic Ocean 2.5 River Discharge 2.6 Permafrost 2.7 Coastal Erosion 2.8 Aeolian Input 2.9 Modern Sediment Input: A Summary Part 2: Processes and Proxies Chapter 3. Glacio-Marine Sedimentary Processes 3.1 Sea-Ice Processes: Sediment Entrainment and Transport 3.2 Ice Sheet- and Iceberg-Related Processes 3.3 Sediment Mass-Wasting Processes 3.4 Turbidite Sedimentation in the Central Arctic Ocean Chapter 4. Proxies Used for Palaeoenvironmental Reconstructions in the Arctic Ocean 4.1 Lithofacies Concept 4.2 Grain-Size Distribution 4.3 Proxies for Sources and Transport Processes of Terrigenous Sediments 4.4 Trace Elements Used for Palaeoenvironmental Reconstruction 4.5 Micropalaeontological Proxies and Their (Palaeo-) Environmental and Stratigraphical Significance 4.6 Stable Isotopes of Foraminifers 4.7 Organic-Geochemical Proxies for Organic-Carbon Source and Palaeoenvironment Part 3: The Marine-Geological Record 5 Modern Environment and its record in surface sediments 5.1 Terrigenous (non-biogenic) components in Arctic Ocean surface sediments: Implications for provenance and modern transport processes 5.2 Organic-Carbon Content: Terrigenous Supply versus Primary Production Chapter 6. Quaternary Variability of Palaeoenvironment and Its Sedimentary Record 6.1 The Stratigraphic Framework of Arctic Ocean Sediment Cores: Background, Problems, and Perspectives 6.2 Variability of Quaternary Ice Sheets and Palaeoceanographic Characteristics: Terrestrial, Model, and Eurasian Continental Margin Records 6.3 Circum-Arctic Glacial History, Sea-Ice Cover, and Surface-Water Characteristics: Quaternary Records from the Central Arctic Ocean 6.4 Accumulation of Particulate Organic Carbon at the Arctic Continental Margin and Deep-Sea Areas During Late Quaternary Times Chapter 7. Mesozoic to Cenozoic Palaeoenvironmental Records of High Northern Latitudes 7.1 Mesozoic High-Latitude Palaeoclimate and Arctic Ocean Palaeoenvironment 7.2 Cenozoic High-Latitude Palaeoclimate and Arctic Ocean Palaeoenvironment Chapter 8. Open Questions and Future Geoscientific Arctic Ocean Research 8.1 Quaternary and Neogene Climate Variability on Sub-Millennial to Milankovich Time Scales 8.2 The Mesozoic-Cenozoic History of the Arctic Ocean References Index
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  • 76
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-81/20
    In: CRREL Report, 81-20
    Description / Table of Contents: A historical review of research is presented to establish the state- of-the-art for analyzing the behavior of vehicles in shallow snow. From this review, the most comprehensive and promising model is put together to establish a first-cut performance prediction model for vehicles operating in shallow snow, slush, ice and thawing soils.
    Type of Medium: Series available for loan
    Pages: iv, 21 Seiten , Illustrationen
    Series Statement: CRREL Report 81-20
    Language: English
    Note: CONTENTS Abstract Preface List of symbols Introduction Historical review Model selection Traction Resistance Slush and thawing soils Ice, hard-packed snow, packed snow River and lake ice Model use Conclusions Literature cited
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  • 77
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-81/21
    In: CRREL Report, 81-21
    Description / Table of Contents: The reflection of solar radiation by a snow cover in situ and the apparent influence of selected substrates were examined in wavelength bands centered at 0.81, 1.04, 1.10, 1.30, 1.50 and 1.80 micrometers. Substrates included winter wheat, timothy, corn, alfalfa, grass, concrete and subsurface layers of 'crusty' snow and ice. Reasonable qualitative agreement between measurements and theoretical predictions was demonstrated, with indications of quantitative agreement in the definition of a 'semi-infinite depth' of snow cover. It was concluded that ultimate quantitative agreement between theory and measurement will require that an 'optically effective grain size' be defined in terms of physically measuarable dimensions or meteorologically predictable characteristics of the ice crystals composing the snowpack.
    Type of Medium: Series available for loan
    Pages: iii, 17 Seiten , Illustrationen
    Series Statement: CRREL Report 81-21
    Language: English
    Note: CONTENTS Abstract Preface Introduction Experimental method Substrate preparation Experimental configuration Radiometric measurements Snow characterization Reflectance standards Data analysis Reflectance measurements Snow replica analysis Discussion of results Comparative reflectance of various substrates under snow Ablation of a snow cover Reflectance from a very light, fresh snow cover Measurements at angles other than vertical Reflectance from substrates Concluding observations Literature cited
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  • 78
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-81/25
    In: CRREL Report, 81-25
    Description / Table of Contents: The problem of heat conduction with phase changeAoften called the Stefan problemrincludes some of the mostintractable mathematical areas of heat transfer. Exact solutions are extremely limited and approximate methodsare widely used. This report discusses the collocation method for the heat balj ce integral approximation. The methodis applied to some standard problems of phase change-Neumann's problem-and a new solution is presented for thecase of surface convection for a semi-infinite body. Numerical results are given for soil systems and also for materialsof interest in latent heat thermal storage.
    Type of Medium: Series available for loan
    Pages: v, 14 Seiten , Illustrationen
    Series Statement: CRREL Report 81-25
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Conversion factors Introduction Collocation method Neumann problem Specified surface heat flux Convective surface heat flux Insulated semi-infinite body Conclusion Literature cited Appendix A: Program listing for numerical quadrature of equation 28
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  • 79
    Monograph available for loan
    Monograph available for loan
    Fairbanks, Alas. : Institute of Northern Engineering, University of Alaska
    Associated volumes
    Call number: AWI G3-16-90316-5
    In: Ninth International Conference on Permafrost, Volume 2
    Type of Medium: Monograph available for loan
    Pages: xxx, 1055-2100, xl Seiten , Illustrationen
    ISBN: 978-0-9800179-3-9
    Series Statement: Ninth International Conference on Permafrost Volume 2
    Language: English
    Note: Contents Preface Acknowledgments NICOP Organizing Team Members NICOP Sponsors Associate Editors and Reviewers Volume 2 Experimental Research on Frost and Salt Heaving of Highway Foundation Soils in Seasonally Frozen Ground Regions in Gansu Province, Northwestern China / G. Li, W. Yu, H. Jin, Y. Sheng, J. Qi, and L. Lü Effects of Retrogressive Thaw Slumps on Sediment Chemistry, Submerged Macrophyte Biomass, and Invertebrate Abundance of Upland Tundra Lakes / P.S. Mesquita, F.J. Wrona, and T.D. Prowse The Vault Creek Tunnel (Fairbanks Region, Alaska): A Late Quaternary Palaeoenvironmental Permafrost Record / H. Meyer, K. Yoshikawa, L. Schirrmeister, and A. Andreev Properties of Eroding Coastline Soils Along Elson Lagoon Barrow, Alaska / G.J. Michaelson, C.L Ping, L.A. Lynn, M.T. Jorgenson, and F. Dou The Application of Tritium in Permafrost Ground-Ice Studies / F.A. Michel Twenty Years of Permafrost Research on the Furggentälti Rock Glaciers, Western Alps, Switzerland / D. Mihajlovic, B. Staub, A. Nussbaum, B. Krummenacher, and H. Kienholz Convective Heat Exchange Between Rivers and Floodplain Taliks / V.M. Mikhailov Geophysical Study of Talik Zones, Western Yakutia / S. Milanovskiy, S. Velikin, and V. Istratov Seasonally Frozen Ground Effects on the Dynamic Response of High-Rise Buildings / R. Miranda, Z. Yang, and U. Dutta Seasonal Thermal Regime of a Mid-Latitude Ventilated Debris Accumulation / S. Morard, R. Delaloye, and J. Dorthe Genetic, Morphological, and Statistical Characterization of Lakes in the Permafrost-Dominated Lena Delta / A. Morgenstern, G. Grosse, and L. Schirrmeister Vegetation and Permafrost Changes in the Northern Taiga of West Siberia / N. Moskalenko Experimental Study of Thermal Properties for Frozen Pyroclastic Volcanic Deposits (Kamchatka, Kluchevskaya Volcano Group) / R.G. Motenko, E.P. Tikhonova, and A.A. Abramov Spatial Analysis of Glacial Geology, Surficial Geomorphology, and Vegetation in the Toolik Lake Region: Relevance to Past and Future Land-Cover Changes / C.A. Munger, D.A. Walker, H.A. Maier, and T.D. Hamilton Choosing Geotechnical Parameters for Slope Stability Assessments in Alpine Permafrost Soils / P. Nater, L.U. Arenson, and S.M. Springman A Permafrost Observatory at Barrow, Alaska: Long-Term Observations of Active-Layer Thickness and Permafrost Temperature / F. Nelson, N.I. Shiklomanov, D.A. Streletskiy, V.E. Romanovsky, K. Yoshikawa, K.M. Hinkel, and J. Brown Decadal Results from the Circumpolar Active Layer Monitoring (CALM) Program (Plenary Paper) / F.E. Nelson, N.I. Shiklomanov, K.M. Hinkel, and J. Brown Modeling Observed Differential Frost Heave Within Non-Sorted Circles in Alaska / D.J. Nicolsky, V.E. Romanovsky, G.S. Tipenko, and D.A. Walker Engineering-Induced Environmental Hazards in Permafrost Regions of the Qinghai-Tibet Plateau / F. Niu, J. Xu, Z. Lin, and P. Wang Comparison of Simulated 2D Temperature Profiles with Time-Lapse Electrical Resistivity Data at the Schilthorn Crest, Switzerland / J. Noetzli, C. Hilbich, C. Hauck, M. Hoelzle, and S. Gruber The Effect of Fines Content and Quality on Frost Heave Susceptibility of Crushed Rock Aggregates Used in Railway Track Structure / A. Nurmikolu and P. Kolisoja Contemporary Permafrost Degradation of Northern European Russia / N. Oberman MAGST in Mountain Permafrost, Dovrefjell, Southern Norway, 2001–2006 / R.S. Ødegård, K. Isaksen, T. Eiken, and J.L. Sollid Effects of Changing Climate and Sea Ice Extent on Pechora and Kara Seas Coastal Dynamics / S.A. Ogorodov Solifluction Lobes in Sierra Nevada (Southern Spain): Morphometry and Palaeoenvironmental Changes / M. Oliva, L. Schulte, and A. Gómez Ortiz Cyanobacteria Within Cryptoendolithic Habitats: The Role of High pH in Biogenic Rock Weathering in the Canadian High Arctic / C.R. Omelon, W.H. Pollard, F.G. Ferris, and P.C. Bennett Thermal State of Permafrost in Alaska During the Fourth Quarter of the Twentieth Century (Plenary Paper) / T.E. Osterkamp Field Trials of Surface Insulation Materials for Permafrost Preservation / J.M. Oswell and J.R. Everts The State of Subsea Permafrost in the Western Laptev Nearshore Zone / P.P. Overduin, V. Rachold, and M.N. Grigoriev Sources of Discrepancy Between CCSM Simulated and Gridded Observation-Based Soil Temperature Over Siberia: The Influence of Site Density and Distribution / D. Pai Mazumder and N. Mölders Remote Sensing-Based Study of Vegetation Distribution and Its Relation to Permafrost in and Around the George Lake Area, Central Alaska / S.K. Panda, A. Prakash, and D.N. Solie Electrical Freezing Potentials During Permafrost Aggradation at the Illisarvik Drained-Lake Experiment, Western Arctic Coast, Canada / V.R. Parameswaran and C.R. Burn Managing Permafrost Data: Past Approaches and Future Directions / M.A. Parsons, S.L. Smith, V.E. Romanovsky, N.I. Shiklomanov, H.H. Christiansen, P.P. Overduin, T. Zhang, M.R. Balks, and J. Brown Regional Geocryological Dangers Associated with Contemporary Climate Change / A.V. Pavlov and G.V. Malkova Wedge Structures in Southernmost Argentina (Rio Grande, Tierra del Fuego) / A. Perez-Alberti, A. Coronato, M.C. Casais, M. Valcarcel-Diaz, and J. Rabassa Modeling Interaction Between Filterable Solutions and Frozen Ground / G.Z. Perlshtein and G.S. Tipenko Russian Approaches to Permafrost Engineering (Plenary Paper) / G. Perlshtein Numerical Modeling of Differential Frost Heave / R.A. Peterson Energy Balance Response of a Shallow Subarctic Lake to Atmospheric Temperature and Advective Persistence / Richard M. Petrone, Wayne R. Rouse, and L. Dale Boudreau Numerical Analysis of Forced and Natural Convection in Waste-Rock Piles in Permafrost Environments / H.N. Pham, L.U. Arenson, and D.C. Sego Effects of Ground Temperature and Slope Deformation on the Service Life of Snow-Supporting Structures in Mountain Permafrost: Wisse Schijen, Randa, Swiss Alps / M. Phillips and S. Margreth Classification of Arctic Tundra Soils Along the Beaufort Sea Coast, Alaska / C.L Ping, L.A. Lynn, G.J. Michaelson, M.T. Jorgenson, Y.L. Shur, and M. Kanevskiy Thermal Diffusivity Variability in Alpine Permafrost Rock Walls / P. Pogliotti, E. Cremonese, U. Morra Di Cella, S. Gruber, and M. Giardino Massive Ground Ice in the Eureka Sound Lowlands, Canadian High Arctic / W.H. Pollard and N. Couture Long-Term Monitoring of Frost Heave and Thaw Settlement in the Northern Taiga of West Siberia / O. Ponomareva and Y. Shur The Permafrost of the Imuruk Lake Basaltic Field Area (Alaska) and Astrobiological Implications / O. Prieto-Ballesteros, D.C. Fernández-Remolar, J. Torres Redondo, M. Fernández-Sampedro, M.P. Martín Redondo, J.A. Rodriguez-Manfredi, J. Gómez-Elvira, D. Gómez-Ortiz, and F. Gómez What Dictates the Occurrence of Zero Curtain Effect? / J. Putkonen Definition of Warm Permafrost Based on Mechanical Properties of Frozen Soil / J. Qi and J. Zhang Active Layer Temperature Monitoring in Two Boreholes in Livingston Island, Maritime Antarctic: First Results for 2000–2006 / M. Ramos, G. Vieira, J.J. Blanco, S. Gruber, C. Hauck, M.A. Hidalgo, and D. Tomé Circumpolar Relationships Between Permafrost Characteristics, NDVI, and Arctic Vegetation Types / M.K. Raynolds and D.A. Walker Rock Glacier Distribution and the Lower Limit of Discontinuous Mountain Permafrost in the Nepal Himalaya / D. Regmi Frost-Protected Shallow Foundation Design Issues: A Case Study / C.H. Riddle, J.W. Rooney, and G.W. Carpenter Estimating Active Layer and Talik Thickness from Temperature Data: Implications from Modeling Results / D.W. Riseborough Mesoscale and Detailed Geocryological Mapping as a Basis for Carbon Budget Assessment (East European Russian Arctic, CARBO-North Project) / F.M. Rivkin, J.V. Vlasova, A.P. Popova, G. Mazhitova, P. Kuhry, I.S. Parmuzin, and I.V. Chehina Permafrost Degradation and Influx of Biogeogases into the Atmosphere / E. Rivkina and G. Kraev Observations and Considerations on Destabilizing Active Rock Glaciers in the European Alps / I. Roer, W. Haeber
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  • 80
    Call number: AWI G1-23-95188
    Description / Table of Contents: This book provides a sound introduction to the basic physical processes that dominate the workings of the Earth, its atmosphere and hydrosphere. It systematically introduces the physical processes involved in the Earth's systems without assuming an advanced physics or mathematical background.
    Type of Medium: Monograph available for loan
    Pages: XI, 321 Seiten , Illustrationen
    Edition: First published
    ISBN: 1405101733 , 1-4051-0173-3 , 9781405101738
    Language: English
    Note: Contents Preface Acknowledgments Chapter 1 Planet Earth and Earth systems 1.1 Comparative planetology 1.2 Unique Earth 1.3 Earth systems snapshots 1.4 Measuring Earth 1.5 Whole Earth 1.6 Subtle, interactive Earth Further reading Chapter 2 Matters of state and motion 2.1 Matters of state 2.2 Thermal matters 2.3 Quantity of matter 2.4 Motion matters: kinematics 2.5 Continuity: mass conservation of fluids Further reading Chapter 3 Forces and dynamics 3.1 Quantity of motion: momentum 3.2 Acceleration 3.3 Force, work, energy, and power 3.4 Thermal energy and mechanical work 3.5 Hydrostatic pressure 3.6 Buoyancy force 3.7 Inward acceleration 3.8 Rotation, vorticity, and Coriolis force 3.9 Viscosity 3.10 Viscous force 3.11 Turbulent force 3.12 Overall forces of fluid motion 3.13 Solid stress 3.14 Solid strain 3.15 Rheology Further reading Chapter 4 Flow, deformation, and transport 4.1 The origin of large-scale fluid flow 4.2 Fluid flow types 4.3 Fluid boundary layers 4.4 Laminar flow 4.5 Turbulent flow 4.6 Stratified flow 4.7 Particle settling 4.8 Particle transport by flows 4.9 Waves and liquids 4.10 Transport by waves 4.11 Granular gravity flow 4.12 Turbidity flows 4.13 Flow through porous and granular solids 4.14 Fractures 4.15 Faults 4.16 Solid bending, buckling, and folds 4.17 Seismic waves 4.18 Molecules in motion: kinetic theory, heat conduction, and diffusion 4.19 Heat transport by radiation 4.20 Heat transport by convection Further reading Chapter 5 Inner Earth processes and systems 5.1 Melting, magmas, and volcanoes 5.2 Plate tectonics Further reading Chapter 6 Outer Earth processes and systems 6.1 Atmosphere 6.2 Atmosphere-ocean interface 6.3 Atmosphere-land interface 6.4 Deep ocean 6.5 Shallow ocean 6.6 Ocean-land interface: coasts 6.7 Land surface Further reading Appendix Brief mathematical refresher or study guide Cookies Index
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  • 81
    Monograph available for loan
    Monograph available for loan
    New York, NY : Springer
    Call number: AWI S2-23-95184
    Description / Table of Contents: A comprehensive and practical guide to analysing ecological data based on courses given to researchers, environmental consultants and post graduate students. Provides comprehensive introductory chapters together with 17 detailed case study chapters written jointly with former course attendants. Each case study explores the statistical options most appropriate to the ecological questions being asked and will help the reader choose the best approach to analysing their own data. A non-mathematical, but modern approach (GLM, GAM, mixed models, tree models, neural networks) is used throughout the book, making it ideally suited to practicing ecologists and environmental scientists as well as professional statisticians. All data sets from the case studies are available for downloading from www.highstat.com
    Type of Medium: Monograph available for loan
    Pages: XXVI, 672 Seiten , Illustrationen , 24 cm
    ISBN: 0387459677 (hbk) , 9780387459677 (hbk) , 978-0-387-45967-7 , 0387459723 (electronic) , 9780387459723 (electronic)
    Series Statement: Statistics for biology and health
    Language: English
    Note: Contents Contributors 1 Introduction 1.1 Part 1: Applied statistical theory 1.2 Part 2: The case studies 1.3 Data, software and flowcharts 2 Data management and software 2.1 Introduction 2.2 Data management 2.3 Data preparation 2.4 Statistical software 3 Advice for teachers 3.1 Introduction 4 Exploration 4.1 The first steps 4.2 Outliers, transformations and standardisations 4.3 A final thought on data exploration 5 Linear regression 5.1 Bivariate linear regression 5.2 Multiple linear regression 5.3 Partial linear regression 6 Generalised linear modelling 6.1 Poisson regression 6.2 Logistic regression 7 Additive and generalised additive modelling 7.1 Introduction 7.2 The additive model 7.3 Example of an additive model 7.4 Estimate the smoother and amount of smoothing 7.5 Additive models with multiple explanatory variables 7.6 Choosing the amount of smoothing 7.7 Model selection and validation 7.8 Generalised additive modelling 7.9 Where to go from here 8 Introduction to mixed modelling 8.1 Introduction 8.2 The random intercept and slope model 8.3 Model selection and validation 8.4 A bit of theory 8.5 Another mixed modelling example 8.6 Additive mixed modelling 9 Univariate tree models 9.1 Introduction 9.2 Pruning the tree 9.3 Classification trees 9.4 A detailed example: Ditch data 10 Measures of association 10.1 Introduction 10.2 Association between sites: Q analysis 10.3 Association among species: R analysis 10.4 Q and R analysis: Concluding remarks 10.5 Hypothesis testing with measures of association 11 Ordination — First encounter 11.1 Bray-Curtis ordination 12 Principal component analysis and redundancy analysis 12.1 The underlying principle of PCA 12.2 PCA: Two easy explanations 12.3 PCA: Two technical explanations 12.4 Example of PCA 12.5 The biplot 12.6 General remarks 12.7 Chord and Hellinger transformations 12.8 Explanatory variables 12.9 Redundancy analysis 12.10 Partial RDA and variance partitioning 12.11 PCA regression to deal with collinearity 13 Correspondence analysis and canonical correspondence analysis 13.1 Gaussian regression and extensions 13.2 Three rationales for correspondence analysis 13.3 From RGR to CCA13.4 Understanding the CCA triplot 13.5 When to use PCA, CA, RDA or CCA 13.6 Problems with CA and CCA 14 Introduction to discriminant analysis 14.1 Introduction 14.2 Assumptions 14.3 Example 14.4 The mathematics 14.5 The numerical output for the sparrow data 15 Principal coordinate analysis and non-metric multidimensional scaling 15.1 Principal coordinate analysis 15.2 Non-metric multidimensional scaling 16 Time series analysis — Introduction 16.1 Using what we have already seen before 16.2 Auto-regressive integrated moving average models with exogenous variables 17 Common trends and sudden changes 17.1 Repeated LOESS smoothing 17.2 Identifying the seasonal component 17.3 Common trends: MAFA 17.4 Common trends: Dynamic factor analysis 17.5 Sudden changes: Chronological clustering 18 Analysis and modelling of lattice data 18.1 Lattice data 18.2 Numerical representation of the lattice structure 18.3 Spatial correlation 18.4 Modelling lattice data 18.5 More exotic models 18.6 Summary 19 Spatially continuous data analysis and modelling 19.1 Spatially continuous data 19.2 Geostatistical functions and assumptions 19.3 Exploratory variography analysis 19.4 Geostatistical modelling: Kriging 19.5 A full spatial analysis of the bird radar data 20 Univariate methods to analyse abundance of decapod larvae 20.1 Introduction 20.2 The data 20.3 Data exploration 20.4 Linear regression results 20.5 Additive modelling results 20.6 How many samples to take? 20.7 Discussion 21 Analysing presence and absence data for flatfish distribution in the Tagus estuary, Portugal 21.1 Introduction 21.2 Data and materials 21.3 Data exploration 21.4 Classification trees 21.5 Generalised additive modelling 21.6 Generalised linear modelling 21.7 Discussion 22 Crop pollination by honeybees in Argentina using additive mixed modelling 22.1 Introduction 22.2 Experimental setup 22.3 Abstracting the information 22.4 First steps of the analyses: Data exploration 22.5 Additive mixed modelling 22.6 Discussion and conclusions 23 Investigating the effects of rice farming on aquatic birds with mixed modelling 23.1 Introduction 23.2 The data 23.3 Getting familiar with the data: Exploration 23.4 Building a mixed model 23.5 The optimal model in terms of random components 23.6 Validating the optimal linear mixed model 23.7 More numerical output for the optimal model 23.8 Discussion 24 Classification trees and radar detection of birds for North Sea wind farms 24.1 Introduction 24.2 From radars to data 24.3 Classification trees 24.4 A tree for the birds 24.5 A tree for birds, clutter and more clutter 24.6 Discussion and conclusions 25 Fish stock identification through neural network analysis of parasite fauna 25.1 Introduction 25.2 Horse mackerel in the northeast Atlantic 25.3 Neural networks 25.4 Collection of data 25.5 Data exploration 25.6 Neural network results 25.7 Discussion 26 Monitoring for change: Using generalised least squares, non-metric multidimensional scaling, and the Mantel test on western Montana grasslands 26.1 Introduction 26.2 The data 26.3 Data exploration 26.4 Linear regression results 26.5 Generalised least squares results 26.6 Multivariate analysis results 26.7 Discussion 27 Univariate and multivariate analysis applied on a Dutch sandy beach community 27.1 Introduction 27.2 The variables 27.3 Analysing the data using univariate methods 27.4 Analysing the data using multivariate methods 27.5 Discussion and conclusions 28 Multivariate analyses of South-American zoobenthic species — spoilt for choice 28.1 Introduction and the underlying questions 28.2 Study site and sample collection 28.3 Data exploration 28.4 The Mantel test approach 28.5 The transformation plus RDA approach 28.6 Discussion and conclusions 29 Principal component analysis applied to harbour porpoise fatty acid data 29.1 Introduction 29.2 The data 29.3 Principal component analysis 29.4 Data exploration 29.5 Principal component analysis results 29.6 Simpler alternatives to PCA 29.7 Discussion 30 Multivariate analyses of morphometric turtle data — size and shape 30.1 Introduction 30.2 The turtle data 30.3 Data exploration 30.4 Overview of classic approaches related to PCA 30.5 Applying PCA to the original turtle data 30.6 Classic morphometric data analysis approaches 30.7 A geometric morphometric approach 31 Redundancy analysis and additive modelling applied on savanna tree data 31.1 Introduction 31.2 Study area 31.3 Methods 31.4 Results 31.5 Discussion 32 Canonical correspondence analysis of lowland pasture vegetation in the humid tropics of Mexico 32.1 Introduction 32.2 The study area 32.3 The data 32.4 Data exploration 32.5 Canonical correspondence analysis results 32.6 African star grass 32.7 Discussion and conclusion 33 Estimating common trends in Portuguese fisheries landings 33.1 Introduction 33.2 The time series data 33.3 MAFA and DFA 33.4 MAFA results 33.5 DFA results 33.6 Discussion 34 Common trends in demersal communities on the Newfoundland-Labrador Shelf 34.1 Introduction 34.2 Data 34.3 Time series analysis 34.4 Discussion 35 Sea level change and salt marshes in the Wadden Sea: A time series analysis 35.1 Interaction between hydrodynamical and biological factors 35.2 The data 35.3 Data exploration 35.4 Additive mixed modelling 35.5 Additive mixed modelling results 35.6 Discussion 36 Time series analysis of Hawaiian waterbirds 36.1 Introduction 36.2 Endangered Hawaiian waterbirds 36.3 Data exploration 36.4 Three ways to estimate trends 36.5 Additive mixed modelling 36.6 Sudden breakpoints 36.7 Discussion 37 Spatial modelling of forest community features in the Volzhsko-Kamsky reserve 37.1 Introduction 37.2 Study area 37.3 Data exploration 37.4 Models of boreality without spatial auto-correlation 37.5 Models of boreality with spatial auto-correlation 37.6 Conclusion References Index
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  • 82
    Monograph available for loan
    Monograph available for loan
    New York [u.a.] : Oxford University Press
    Type of Medium: Monograph available for loan
    Pages: XIV, 354 S , Ill., graph. Darst., Kt.
    ISBN: 0195154312 , 9780195154313
    Series Statement: Long-Term Ecological Research Network series
    Language: English
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  • 83
    Call number: ZSP-SCAR-570-3
    In: National Antarctic Research Report to SCAR, No. 3
    Type of Medium: Series available for loan
    Pages: 16 Seiten
    ISSN: 0179-0072
    Series Statement: National Antarctic Research Report to SCAR 3
    Language: English
    Note: Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 80-October 81. - II. Planned Activities, October 81-October 82. - References.
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  • 84
    Call number: ZSP-SCAR-570-2
    In: Report to SCAR on Antarctic research activities of Germany (FRG), 2
    Type of Medium: Series available for loan
    Pages: 16 Seiten
    ISSN: 0179-0072
    Series Statement: Report to SCAR on Antarctic research activities of Germany (FRG) 2
    Language: English
    Note: Contents: Membership of the National Committee on Antarctic Research of the Federal Republic of Germany. - Introduction. - Station. - Antarctic Research Activities 1979-1980. - Planned Research Activities 1980-1981. - References.
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  • 85
    Monograph available for loan
    Monograph available for loan
    [Erscheinungsort nicht ermittelbar] : [Verlag nicht ermittelbar]
    Call number: AWI P2-19-92186
    Type of Medium: Monograph available for loan
    Pages: 23 Seiten
    Language: English
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  • 86
    Monograph available for loan
    Monograph available for loan
    Cambridge : World Data Center 'C' for Glaciology, Scott Polar Research Institute
    Call number: AWI G7-19-92220
    Type of Medium: Monograph available for loan
    Pages: VI, 37 Seiten , 30 cm
    Language: English
    Note: Contents: Preface. - Foreword. - Subject sections. - General articles. - Instruments and methods. - Theory of radio echo-sounding. - Applications to land ice. - Applications to floating ice. - Ancillary methods and observations. - Popular articles. - Theses and abstracts of theses.
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  • 87
    Call number: ZSP-980-89 ; ZSP-980-89(2. Ex.)
    In: ZfI-Mitteilungen ; 89, Nr. 89
    Type of Medium: Series available for loan
    Pages: 132 S. , Ill., graph. Darst., Kt.
    ISSN: 0323-8776
    Series Statement: ZfI-Mitteilungen 89
    Language: English
    Note: Contents: Preface. - Tritium in Antarctic precipitation - information on global distribution / D. Hebert. - On the physical geography of the Schirmacher Oasis (East Antarctica, Dronning Maud Land) / W. Richter. - Investigation of Deuterium concentration relations between atmospheric water vapour and precipitations in the Schirmacher Oasis, East Antarctica / P. Kowski. - Isotope-hydrological and hydrochemical characterization of lakes in the Schirmacher Oasis (East Antarctica) / W. Richter, U. Wand, G. Strauch, P. Kowski, W. Kurze. - Isotope-hydrological and hydrochemical studies of the interior Antarctic lake "Untersee" in the Wohlthat Massif, Dronning Maud Land, East Antarctica / W.-D. Hermichen, M. Crelle, P. Kowski, W. Kurze, U. Wand. - The isotope-glaciological situation in the surroundings of the Schirmacher Oasis/Dronning Maud Land - a first overview / W.-D. Hermichen, P. Kowski, G. Strauch. - Radiocarbon dating of breeding places of petrels in the Antarctic / A. Hiller, U. Wand. - K - Ar dating of basalt dykes in the Schirmacher Oasis, Dronning Maud Land, East Antarctica / G. Kaiser, U. Wand.
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  • 88
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/23
    In: CRREL Report, 82-23
    Description / Table of Contents: A direct filtration, water treatment pilot plant was operated on the Kenai River at Soldotna, Alaska, during the summer of 1980. The purpose of the pilot plant operations was to determine the feasibility of the direct filtration process for removal of glacial silt. The major criterion used to determine feasibility was production of water containing less than 1.0 NTU of turbidity. For the range of raw water turbidities encountered (22-34 NTU), the pilot plant testing indicated that direct filtration was feasible and could be considered as an alternative to conventional waiter treatment plants containing sedimentation tanks.
    Type of Medium: Series available for loan
    Pages: 26 Seiten , Illustrationen
    Series Statement: CRREL Report 82-23
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric Introduction Glacial characteristics Water treatment Materials and methods Experimental design Pilot plant intake Hydrocyclone Chemical addition system Flocculation system Filtration system Pilot plant operations Coagulant chemical preparations Flow measurement Sampling Results and discussion Kenai River w ater quality Evaluation of pilot plant testing Performance of pilot plant elements Physical and chem ical variables Conclusions Recommendations Literature cited
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  • 89
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/24
    In: CRREL Report, 82-24
    Description / Table of Contents: Velocity data derived from petroleum industry seismic records from Harrison Bay show that high-velocity material ( or = 2 km/s) interpreted to be ice-bonded permafrost is common. In the eastern part of the bay, the depth to high velocity material increases and velocity decreases in an orderly manner with increasing distance from shore until the layer is no longer apparent. The western part of the bay is less orderly, possibly reflecting a different geological and thermal history. This western part may be an inundated section of the low coastal plain characterized by the region north of Teshekpuk Lake, and could have contained deep thaw lakes, creating low velocity zones. Along some seismic lines, the high-velocity material extends approximately 25 km offshore. Two anomalies have been found which could be associated with rapidly degrading permafrost. One is strong attenuation, which was interpreted as an indication of gas in the shallow deposits. The other is the presence of considerable seismic noise, including identifiable small seismic events. The origin of this noise has not been positively established, and it is proposed that it may indicate that some movement is occurring in the sediments due to thaw.
    Type of Medium: Series available for loan
    Pages: 65 Seiten , Illustrationen
    Series Statement: CRREL Report 82-24
    Language: English
    Note: CONTENTS Abstract Preface Introduction Methods Reading records Refractions Reflections Rayleigh waves Spatial resolution Anomalies Results and discussion Seismic velocity distribution Attenuation Low-level natural seismicity Summary Literature cited Appendix A: Error estimates Appendix B: Velocity profiles Appendix C: Seismic cross sections
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  • 90
    Call number: ZSP-201-82/26
    In: CRREL Report, 82-26
    Description / Table of Contents: The Caribou-Poker Creeks Research Watershed is a small (101.5-sq km) drainage basin located 48 km northwest of Fairbanks, Alaska. Elevations within the watershed range from 210 to 826 m, and approximately 28% of its area is underlain by permafrost. Climatic differences between the watershed and Fairbanks are primarily due to the higher elevation of the watershed. Generally the watershed climatic sites are warmer in winter and cooler in summer than Fairbanks. Within the watershed the greatest temperature contrasts exist in winter, when the valley-bottom sites are beneath the regional air temperature inversion, and the higher sites are above it. From May through September the total precipitation averages 270 mm, 1.47 times that received at Fairbanks. The annual precipitation is about 1.7 times that of Fairbanks. The historical precipitation record at Fairbanks indicates that summer precipitation was below the long-term normal in eight of the eleven years of watershed measurements (1969-1980); no climatic extremes occurred during this period. An analysis of annual streamflow data showed an inconsistency of baseflow recessions from year to year. The runoff-rainfall ratio for individual summer storms averaged 0.35 for Caribou Creek. Comparisons of spot discharge measurements of predominantly permafrost and non-permafrost subwatersheds showed that permafrost-dominated watersheds have a much flashier response to precipitation than non-permafrost watersheds. A comparison of the annual flow distribution of the watershed indicated that Caribou Creek has lower summer and higher winter discharges per unit area than the Chena or Salcha Rivers.
    Type of Medium: Series available for loan
    Pages: 42 Seiten , Illustrationen
    Series Statement: CRREL Report 82-26
    Language: English
    Note: CONTENTS Abstract Preface Introduction Setting Geology and soils Vegetation Climate Air temperature Precipitation Hydrology Annual and monthly runoff Individual storms Baseflow recessions Spatial flow variability Temporal flow variability Summary and conclusions Literature cited Appendix A: Station histories
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  • 91
    Monograph available for loan
    Monograph available for loan
    Leipzig : Academy of Sciences of the GDR, Central Institute for Isotope and Radiation Research
    Associated volumes
    Call number: AWI G6-19-93042-2
    In: Interregional Training Course on Radiochemistry, [Supplement]
    Type of Medium: Monograph available for loan
    Pages: 88 Seiten , Illustrationen
    Language: English
    Note: Contents Manual 2.2 The relative measurement of aktivity Lectures 1.3 Statistics / H. Baumbach 2.2 Sealed sources / K. Vormum 2.4 Energy dispersive x-ray fluorescence analysis / H.-K. Bothe 3.1 The use of carriers / H. Koch 4.3 Autoradiography / K. Freyer 6.1 Radiometric methods in environmental control / H.-J. Große
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  • 92
    Monograph available for loan
    Monograph available for loan
    Leipzig : Academy of Sciences of the GDR, Central Institute for Isotope and Radiation Research
    Associated volumes
    Call number: AWI G6-19-93042-1
    In: Interregional Training Course on Radiochemistry, [Hauptband]
    Type of Medium: Monograph available for loan
    Pages: 248 Seiten , Illustrationen
    Language: English
    Note: Contents Manual 1.1 Beta measurements 1.2 Measurement of the energy spectrum and range of α-radiation with semiconductor detectors 1.3 Error and statistical tests 1.4 Basic experiments of gamma spectroscopy 2.1 Determination of certain elements in sedimental atmospheric dust by x-ray fluorescence analysis 2.2 Calibration and efficiencies (see Supplement) 2.3 Thin-layer chromatographic separation and test of the purity of labelled compounds 2.4 Separation of Thorium-234 from Uranium-238 2.5 Separation of 137Ca/137mBa by precipitation and sorption 3.1 Determination of phosphate by simple isotope dilution analysis and determination of Zn in MgSO4 by substoichiometric isotope dilution analysis 3.2 The Szilard-Chalmers effect 3.3 Determination of the Ag content in slags by instrumental neutron activation analysis 4.1 Isotope exchange of Ethyl Iodide and Sodium Iodide 4.2 Liquid scintillation counting of Carbon-14 and Tritium 4.3 Autoradiography - Demonstration of Autoradiographic techniques Lectures 1.1 Fundamentals of radioactivity / G. K. Vormum 1.2 Interaction of nuclear radiation with matter / G. K. Vormum 1.4 Equations of radioactive decay / G. K. Vormum 1.5 Radiation detectors / M. Geisler 2.1 Radiation spectroscopy / M. Geisler 2.5 Handling of radioisotopes / G. K. Vormum 2.7 Behaviour of radionuclides in very low concentrations / H. Koch 3.6 Particle sources / J. W. Leonhardt 4.2 Tracers in chemical kinetics / J. Dermietzel 4.4 Liquid Scintillation Counting (LSC) / R. Trettin 5.1 Isotopic tracers in biology / H. Hübner 5.2 Low-level counting / R. Trettin 5.4 Basic concepts of radioimmunoassay (RIA) / G. K. Vormum 6.2 Radionuclide generators / R. Otto
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  • 93
    Call number: AWI G2-19-93054
    Type of Medium: Monograph available for loan
    Pages: 57 Blätter , Illustrationen
    Language: English , German
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  • 94
    Monograph available for loan
    Monograph available for loan
    München : Institut für Allgemeine und Angewandte Geologie, Ludwig-Maximilians-Universität
    Call number: AWI G6-18-91729
    Type of Medium: Monograph available for loan
    Pages: 45 Seiten , Illustrationen, Karten , 30 cm
    Language: English
    Note: Contents: Age and correlation of metamorphic basement in Edward VII Peninsula Marie Byrd Land and Southern New Zealand / C. J. Adams & S. D. Weaver. - Granite Harbour intrusives from North Victoria Land between David and Aviator Glaciers: new geochronological and isotope data / P. Armienti, C. Ghezzo, F. Innocenti, P. Manetti, S. Rocchi & S. Tonarini. - Granulites in the Kottas Mountains, Antarctica: geology, geochronology and geochemistry / N. T. Arndt, C. Chauvel, W. Todt, M. Tapfer & K. Weber. - Utility of 87Sr/86Sr ratios of biogenic carbonate to estimate ages of sedimentary and climatic events in Antarctica / E. Barrera & P. N. Webb. - Cooling patterns in Western Dronning Maud Land, Antarctica, and Southwestern Africa and their implications to Gondwana / J. M. Barton & A. B. Moyes. - U-Pb isotopic systematics of zircons from polymetamorphic rocks of Eastern Enderby Land / B. V. Belyatsky, L. K. Levsky & E. N. Kamenev. - Geochronology and climastratigraphy of tertiary glacial and interglacial successions on King George Island, South Shetland Islands / K. Birkenmajer. - Reliability of potassium-argon dating of cretaceous-tertiary island-arc volcanic suite of King George Island, South Shetland Islands / K. Birkenmajer, E. Soliani, Jr. & K. Kawashita. - Sequence stratigraphy for cenozoic glacial rocks of the Antarctic Continental margin - a lesson from Prydz Bay Drilling / A. K. Cooper. - Jurassic accretion of a high buoyancy guyot in Southern-most South America: the Diego Ramirez Islands / J. Davidson, E. Godoy, F. Herve, C. Mpodozis & N. Munoz. - Age and petrogenesis of the granitic basement rocks, Brown Hills, Transantarctic Mountains / R. P. Felder & G. Faure. - Age of the Chlamys-Bearing Conglomerate (paleogene) from King George Island in the light of micropaleontological data / A. Gazdzicki. - Tectonic implications of 40Ar/39Ar ages from the Elephant Island Group, Antarctica / A. M. Grunow, I. W. D. Dalziel, T. M. Harrison & M. T. Heizler. - New Rb-Sr age data on the Scotia metamorphic complex at Clarence Island / F. Herve, H. Miller, W. Loske, A. Milne & R. Pankhurst. - Sedimentary structures in rift basins on the conjugate margins of Antarctica/Ross Sea and Australia/Western Tasmania, South Tasman Rise / K. Hinz, M. Hemmerich, U. Salge & O. Eiken. - Was there a significant glacial episode on the Antarctic Peninsula during the middle Holocene? / Chr. Hjort & O. Ingolfsson. - Rb-Sr and K-Ar dating of granite harbour intrusives and rhyolites from North North Victoria Land, Antarctica / H. Kreuzer, C. Carl, A. Höhndorf, P. Müller, N. W. Roland & F. Tessensohn. - Radiometric dating of Jurassic supergroup Tholeiites: a review / P. R. Kyle. - Cretaceous-tertiary history of the Kergulen Plateau revealed from the Marion Dufrese Piston Core and dredging crusies / L. Leclaire, F. Fröhlich & Y. Bassias. - Geologic events of the last 100 million years revealed by K-Ar dating of volcanic rocks in Marie Byrd Land / W. E. LeMasurier & D. C. Rex. - Radiolarian biochronology from the subantarctic Atlantic Ocean / H. Y. Ling. - U-Pb Zircon ages of xenoliths at Cape Dubouzet, Northern Antarctic Peninsula / W. Loske, H. Miller, A. Milne & F. Herve. - Th-230 and Be-10 chronology of sediments from the Weddell Sea / A. Mangini, P. Walter & A. Eisenhuber. - Tephrostratigraphical investigations on marine and limnic ash-layers from Bransfield Strait Region, Antarctica / D. Matthies, R. Mäusbacher & D. Storzer. - Significance of detrital zircons from the Trinity Peninsula Group sediments for the reconstruction of Gondwana / H. Miller & W. Loske. - Geochronology of the basement to Graham Land, Antarctic Peninsula / A. J. Milne & I. L. Millar. - Implications of Sm-Nd garnet ages for the stratigraphy of Northern Graham Land, Antarctic Peninsula / A. J. Milne, I. L. Millar & A. G. Whitham. - A review of isotopic data from Western Dronning Maud Land, Antarctica / A. B. Moyes & J. M. Barton Jr. - Metamorphic rocks and charnokite in Gjelsvikfiella and Western Muhlig-Hofmannfjella, and their Rb/Sr ages / Y. Otha & B. Torudbakken. - The geochronology of the Jones Mountains and Thurston Island, Central West Antarctica / R. J. Pankhurst, I. L. Millar, A. M. Grunow & B. C. Storey. - Sr isotopes in volcanic rocks from Deception Island, and their genetic significance / C. A. Parica & H. A. Ostera. - Paleomagnetic stratigraphy of drill-cores from McMurdo Sound and Taylor Valley, Antarctica / H. J. Rieck. - Variability of scavenging in the Southern Ocean. Implications for stratigraphy based on radioisotope- and manganese accumulation / M. M. Rutgers van der Loeff & G. W. Berger. - Dating of the cenozoic magmatic province at the Ross Sea Coast of Northern Victorica Land, Antarctica / M. Schmidt-Thome, H. Kreuzer, H. Lenz, P. Müller, F. Tessensohn & U. Vetter. - Reconnaissance fission track dating within West Antarcticca / B. C. Storey, R. J. Pankhurst, I. B. Evans & A. Carter. - New radiometric age data from Elephant Island, South Shetland Islands / R. A. J. Trouw, R. J. Pankhurst & K. Kawashita. - Antarctic cenozoic geochronology / P. N. Webb. - Radiometric age determinations of late cenozoic alkalli McMurdo Volcanic Group Rocks. Discovery volcanic subprovince, Ross Sea, Antarctica / A. C Wright-Grassham, P. R. Kyle, K. Foland, F. Mcdowell & D. Lux.
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  • 95
    Call number: AWI Bio-16-90312
    In: Developments in Hydrobiology ; 197
    Description / Table of Contents: Ostracods, small aquatic Crustacea, occur in almost every marine, brackish and freshwater habitat. Their calcified bivalved carapaces readily fossilize and their record in earth history is long, dense and diverse. Ostracod species are particularly useful as tools in marine and limnic (palaeo-) ecology, in (palaeo-) biogeography, and biostratigraphy. Their reproductive morphology is as extraordinary as their reproductive modes, and many of their physiological peculiarities remain mysterious. Ostracod taxonomy and phylogeny contribute to general studies of crustacean evolution. The diversity of ostracod applications in both biology and palaeontology is clearly illustrated by the eighteen papers of the 15th International Symposium on Ostracoda (Berlin, Germany) in 2005, which are grouped in the present proceedings, one of three volumes resulting from this meeting.
    Type of Medium: Monograph available for loan
    Pages: VI, 272 S , Ill., graph. Darst.
    Edition: 1. ed.
    ISBN: 1402064179 (Gb.) , 9781402064173 (Gb.)
    Series Statement: Developments in Hydrobiology 197
    Language: English
    Note: TABLE OF CONTENTS: Preface / R. Matzke-Karasz, M. Schudack, K. Martens. - REVIEW PAPER. - Ostracod recovery in the aftermath of the Permian-Triassic crisis: Palaeozoic-Mesozoic turnover / S. Crasquin-Soleau, T. Galfetti, H. Bucher, S. Kershaw, Q. Feng. - OSTRACOD TAXONOMY AND BIOGEOGRAPHY. - The influence of El Niño 1997-98 on pelagic ostracods in the Humboldt Current Ecosystem off Peru / R. Castillo, T. Antezana, P. Ayón. - A new, interstitial species of Terrestricythere (Crustacea: Ostracoda) and its microdistribution at Orito Beach, northeastern Sea of Japan / S. F. Hiruta, S.-i. Hiruta, S. F. Mawatari. - Non-marine Ostracoda (Crustacea) of Banat district in Serbia / T. Karan-Žnidaršič, B. Petrov. - ECOLOGICAL FACTORS AFFECTING OSTRACOD DISTRIBUTION. - A year round comparative study on the population structures of pelagic Ostracoda in Admiralty Bay (Southern Ocean) / K. Blachowiak-Samolyk, M.V. Angel. - Water quality and diversity of the Recent ostracod fauna in lowland springs from Lombardy (northern Italy) / V. Pieri, C. Caserini, S. Gomarasca, K. Martens, G. Rossetti. - Factors affecting spatial and temporal distribution of Ostracoda assemblages in different macrophyte habitats of a shallow lake (Lake Fehér, Hungary) / A. Kiss. - Groundwater Ostracods from the arid Pilbara region of northwestern Australia: distribution and water chemistry / J. M. Reeves, P. De Deckker, S. A. Halse. - Ecological requirements of Ostracoda (Crustacea) in a heavily polluted shallow lake, Lake Yeniçağa (Bolu, Turkey) / O. Külköylüoğlu, M. Dügel, M. Kılıç. - Food selection in Eucypris virens (Crustacea: Ostracoda) under experimental conditions / O. Schmit, G. Rossetti, J. Vandekerkhove, F. Mezquita. - EVOLUTIONARY SIGNIFICANCE OF OSTRACOD MORPHOLOGY. - Extra-lobal and complex dimorphic features in Middle Devonian palaeocopine ostracods / G. Becker, W. K. Braun. - Evolutionary and taxonomic aspects within the species group Pseudocandona eremita (Vejdovský) (Ostracoda, Candonidae) / S. lepure, T. Namiotko, D. L. Danielopol. - On the origin of the putative furca of the Ostracoda (Crustacea) / C. Meisch. - Ultrastructure of the carapace margin in the Ostracoda (Arthropoda: Crustacea) / S. Yamada. - Ultrastructure of hepatopancreas and its possible role as a hematopoietic organ in non-marine cypridoidean ostracods (Crustacea) / R. Symonova. - OSTRACOD REPRODUCTION AND ONTOGENY. - Copulatory behaviour and sexual morphology of three Fabaeformiscandona Krstić, 1972 (Candoninae, Ostracoda, Crustacea) species from Japan, including descriptions of two new species / R. J. Smith, T. Kamiya. - Early release of eggs and embryos in a brooding ancient asexual ostracod: brood selection or a gambling strategy to increase fecundity? / R. L. Pinto, C. E. F. Rocha, K. Martens. - The ontogeny of appendages of Heterocypris salina (Brady, 1868) Ostracoda (Crustacea) / N. Kubanç, O. Özuluğ, C. Kubanç.
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  • 96
    Monograph available for loan
    Monograph available for loan
    Fairbanks, Alas. : Institute of Northern Engineering, University of Alaska
    Associated volumes
    Call number: AWI G3-16-90316-3
    In: Ninth International Conference on Permafrost, final program
    Type of Medium: Monograph available for loan
    Pages: 44 Seiten , Illustrationen
    Series Statement: Ninth International Conference on Permafrost final program
    Language: English
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  • 97
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/12
    In: CRREL Report, 82-12
    Description / Table of Contents: From a high-quality set of velocity, temperature, and humidity profiles collected upwind and downwind of a step change in surface roughness, temperature, and moisture, we have calculated upwind and downwind values of the heat fluxes and friction velocity. The surface change is from smooth to rough; upwind, the sensible heat flux is upward and the latent heat flux is zero; downwind, the surface is well-watered so that the latent heat flux is upward while the sensible heat flux is downward. The downwind latent heat flux in this fetch-limited flow obeys NL=0.08 Rx 0.76 where NL is the latent heat Nusselt number and Rx is the fetch Reynolds number, a parameter for characterizing fetch-limited flows. Because this relation is virtually the same as one found to describe the sensible heat and condensate fluxes over arctic leads, we conclude that the Nusselt numbers nondimensionalizing scalar fluxes are the same for a given fetch Reynolds number when boundary conditions are similar.
    Type of Medium: Series available for loan
    Pages: vii, 18 Seiten , Illustrationen
    Series Statement: CRREL Report 82-12
    Language: English
    Note: CONTENTS Abstract Preface List of symbols Introduction Upwind: flux gradient method Downwind: integral method ResulIts Energy budget Latent heat flux Surface stress Downwind humidity profiles Discussion Conclusions Literature cited
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  • 98
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/11
    In: CRREL Report, 82-11
    Description / Table of Contents: The purpose of this investigation was to provide data to be used in evaluating the effects of winter navigation on pro­cesses that cause bank erosion. The specific objectives were to document bank conditions and erosion sites along the rivers, to monitor and compare the amounts of winter and summer bank recession and change, and to estimate the amount of recession that occurred prior to winter navigation. Shoreline conditions and bank recession were documented during field surveys each spring and fall. Bank changes were evaluated by comparison to observations from a previous survey. Aerial photointerpretation was done to estimate the amount of bank recession that occurred prior to winter navigation. Three hundred forty-five miles of river shoreline were surveyed. Banks were eroding along 21.5 miles (6.2%). The common types of bank failures were soil falls (sloughing) and block sliding and slumping. The erosion along approxi­mately 15 miles (70%) of the 21.5 miles was occurring along reaches not bordering winter navigation channels.
    Type of Medium: Series available for loan
    Pages: v, 75 Seiten , Illustrationen
    Series Statement: CRREL Report 82-11
    Language: English
    Note: CONTENTS Abstract Preface Introduction Previous investigations Approach Shoreline conditions Bank changes Bank recession before winter navigation St. Marys River Bank changes Bank recession before winter navigation St. Clair River Bank changes Bank recession before winter navigation Detroit River Bank changes Bank recession before winter navigation St. Lawrence River Bank changes Historical bank recession Summary and conclusions Literature cited Appendix A: St. Marys River Appendix B: St. Clair River Appendix C: Detroit River Appendix D: St. Lawrence River
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  • 99
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-82/9
    In: CRREL Report, 82-9
    Description / Table of Contents: This study deals with the distribution of forces along the converging boundaries of the Port Huron, Michigan, region where unconsolidated ice in Lake Huron is held against wind and water stresses. An experimental basin was built to induce uniform shear stress on the model ice cover by flowing water beneath the ice. The boundary segments, which held the ice cover in the region, were instrumented to measure force in the normal and tangential directions. The distribution of normal forces along the boundary was compared with as distribution derived by using a theoretical model. An ice control structure (ICS) was installed in the basin and experiments were conducted to measure the forces on the ICS and the ice release through the opening in the ICS during simulated ship passages. The experimental results are presented in a nondimensional form. In addition, the force per unit length on the ICS and the area of ice released through its opening were estimated for the expected wind conditions at the Port Huron site.
    Type of Medium: Series available for loan
    Pages: v, 27 Seiten , Illustrationen
    Series Statement: CRREL Report 82-9
    Language: English
    Note: CONTENTS Abstract Preface List of symbols Introduction Theoretical models Case 1 Case 2 Case 3 Experimental program Experimental facility Scaling factors Experimental results Analysis of wind data for lower Lake Huron Summary and conclusions Release of ice through the opening of an ICS Ice forces on the ice control structure Ice forces on ice control structure from a large unconsolidated ice cover Literature cited Appendix A. Equation for the stress resultants and velocities of the ice cover Appendix B. Monthly summary of wind data at Port Huron
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  • 100
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-83/5
    In: CRREL Report, 83-5
    Description / Table of Contents: This report presents the results of dynamic ice-structure interaction model tests conducted at the CRREL Ice Engineering Facility. A flexible, single-pile, bottom-founded offshore structure was simulated by a test pile with about a one-to-ten scale ratio. Urea (instead of sodium chloride) was used as dopant to scale down the ice properties, resulting in good model ice properties. Six ice fields were frozen and 18 tests carried out. In all cases distinctive dynamic ice structure interaction vibrations appeared, from which abundant data were collected. In tests with linear ice velocity sweep, sawtooth-shaped ice force fluctuations occurred first. With increasing velocity the natural modes of the test pile were excited, and shifts from one mode to another occurred. The maximum ice force values appeared mostly with low loading rates, but high forces appeared random'y at high ice velocities. As a general trend, ice force maximums, averages and standard deviations decreased with increasing ice velocities. The aspect ratio effect of the ice force in continuous crushing follows the same dependence as in static loadings. The frequency of observed ice forces is strongly dominated by the natural modes of the structure. Dynamically unstable natural modes tend to make the developing ice force frequencies the same as the natural frequencies. Otherwise the resulting frequency depends directly on structural stiffness and ice velocity and inversely on the ice force range. During vibrations the displacement rates of the structure overcome the velocity of ice, making low loading rates and hence high ice forces possible. During crushing, ice induces both positive and negative damping.
    Type of Medium: Series available for loan
    Pages: iv, 53 Seiten , Illustrationen
    Series Statement: CRREL Report 83-5
    Language: English
    Note: CONTENTS Abstract Preface Introduction Test arrangements Ice properties Crushing patterns Maximum ice force vs velocity Dynamic aspect ratio effect and crushing strength Measured ice force frequencies Calculated ice force frequencies Accelerations, velocities and displacements Damping Ice-induced negative damping Limit cycles Buckling load Conclusions Literature cited
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