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  • 1
    Call number: AWI E1-89-0347
    Type of Medium: Monograph available for loan
    Pages: 50 Seiten , Illustrationen
    Language: English
    Note: Contents: Preface. - Part I German oceanographic institutions. - Part II German oceanographic expeditions. - Part III German oceanographers. - References.
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  • 2
    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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  • 3
    Call number: ZSP-SCAR-570-10
    In: National Antarctic Research Report to SCAR, 10
    Type of Medium: Series available for loan
    Pages: 61 Seiten
    ISSN: 0179-0072
    Series Statement: National Antarctic Research Report to SCAR 10
    Language: English
    Note: Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Members of Permanent Working Groups and Groups of Specialists of SCAR. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 1987 - October 1988. - II. Planned Activities, October 1988 - October 1989. - References. - Addenda to Former Reports. - Index of Activities.
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  • 4
    Call number: ZSP-SCAR-570-9
    In: National Antarctic Research Report to SCAR, No. 9
    Type of Medium: Series available for loan
    Pages: 34 Seiten
    ISSN: 0179-0072
    Series Statement: National Antarctic Research Report to SCAR 9
    Language: English
    Note: Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Members of Permanent Working Groups and Groups of Specialists of SCAR. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 1986 - October 1987. - II. Planned Activities, October 1987 - October 1988. - References. - Addenda to Former Reports. - Index of Activities.
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  • 5
    Series available for loan
    Series available for loan
    Leipzig : Academy of Sciences of the GDR, Central Institute of Isotope and Radiation Research
    Associated volumes
    Call number: AWI G6-19-91927-3
    In: Third Working Meeting Radioisotope Application and Radiation Processing in Industry, Vol. 3
    Type of Medium: Series available for loan
    Pages: XIX, Seite 749-1095 , Illustrationen
    Language: English
    Note: VOLUME III PART 2 : POSTER CONTRIBUTIONS (continued) M. Braune: SIMPLIFIED MATHEMATICAL MODELS FOR BACKSCATTERING OF X-RAYS H.-W. Thümmel, G. Korner, J.W. Leonhardt: STATE AND PERFORMANCE OF ON-STREAM ASH CONTENT DETERMINATION IN LIGNITE AND BLACK COAL USING THE 2-ENERGY TRANSMISSION TECHNIQUE H.-W. Thümmel, G. Korner, Oh. Beutel, W. Riedel, U. Gräfenhain, J.W. Leonhardt: KRAS-2 - A GAUGE FOR THE ON-STREAM DETERMINATION OF THE ASH CONTENT IN RAW LIGNITE AT POWER STATIONS D. Fritzsche, H.-W. Thümmel: A SCATTER MODEL FOR CAlCULATION OF GAMMA RAY INTENSITIES IN SCATTER-TRANSMISSION GEOMETRY L. Meray, E. Hazi: DECONTAMINATION TEST WITH ISOTOPE INDUCED X-RAY FLUORESCENCE METHOD H. Silveira da Silva: CALCULATION OF THE DOSIMETER RESPONSE AS A FUNCTION OF THE GAMMA RADIATION ENERGY L. Wawrzonek, J. Parus: OPTIMIZATION OF RADIOMETRIC METHOD OF ASH CONTENT DETERMINATION IN BROWN COAL SAMPLES G. Körner, G. Fischer, D. Fritzsche, J.W. Leonhardt, K. Rosenbaum, H.-W. Thümmel: EXPERIENCE IN RADIOMETRIC ON-LINE DETERMINATION R. Göldner, E. Maul, D. Wagner: FAST NEUTRON ACTIVATION ANALYSIS OF BROWN COAL SAMPLES FOR SILICON AND ASH B. Heinrich, K. Irmer, R. Pötschke: FAST ANALYSIS OF CARBON CONTENT BY INELASTIC SCATTERING OF NEUTRONS H.-W. Thümmel, M. Frenzel, D. Fritzsche, T. Cechak, J. Kluson: INFLUENCE OF SAMPLE INHOMOGENEITIES ON THE SIGNAL OF 60 keV SCATTER-TRANSMISSION ASH GAUGES W. Michel, U. Paul, D. Luther, H.-G. Könnecke, H.-C. Abendroth: STUDIES ON THE RESIDENCE TIME BEHAVIOUR OF TECHNICAL GRAIN SIZES IN FLUIDIZED BEDS Z. Kolar, J. Thýn, W. Martens, A. Korving: THE MEASUREMENT OF GAS RESIDENCE TIME DISTRIBUTION IN A PRESSURIZED FLUIDIZED-BED COMBUSTOR USING 41Ar AS RADIOTRACER E. Iller, B.J. Trznadel: OPERATION EFFICIENCY ASSESSMENT OF LOOP REACTOR FOR COAL LIQUEFACTION, ON THE GROUNDS OF RADIOTRACER INVESTIGATIONS K. Wagner, T. Grätsch, J. Schüttau: PROCESS ANALYSIS OF THE TECHNOLOGY FOR THE PRODUCTION OF GRAPHITE ELECTRODES BY THE AID OF RADIOISOTOPES G. Krüger, V. Kliem, M. Kreher, N. Boy: A COMPUTER-AIDED X-RAY FLUORESCENCE ANALYZER WITH RADIONUCLIDE EXCITATION H. Firganek, A. Żak, J. Siewierski, S. Zielienski: RADIOISOTOPE INVESTIGATIONS OF WATER LEACHING OF VANADIUM COMPOUNDS FROM POLYMETALLIC ORE D. Degering, S. Unterricker: DETERMINATION OF SMALL YTTRIUM CONCENTRATIONS IN GEOLOGICAL SAMPLES BY CHARGED PARTICLE ACTIVATION ANALYSIS J. Parus: DETERMINATION OF RARE EARTH ELEMENTS WITH RADIOISOTOPE EXCITED X-RAY FLUORESCENCE E. Kowalska, P. Urbański, D. Wagner, H. Bruchertseifer: DETERMINATION OF SILVER CONTENT IN SOME CARRIER MATERIALS BY X-RAY FLUORESCENCE TECHNIQUE L. Rowinska, L. Waliś, W. Dalecki, M. Kusowski: EFFICIENCY OF METAL PURIFICATION BY VACUUM DISTILLATION TECHNIQUE A. Salamon, Z. Demendy: AN EXPERIMENTAL AND THEORETICAL STUDY FOR THE MOTION AND TRAPPING OF INCLUSIONS DURING CONTINUOUS CASTING OF STEEL L. Petryka, Z. Stegowski, L. Furman: COMPLEX INVESTIGATIONS OF COPPER ORE DRESSING PROCESS L. Petryka, Z. Stegowski, L. Furman: MODELLING OF COPPER ORE CONCENTRATION PROCESS J. Palige: RADIOTRACER INVESTIGATION OF THE COPPER PRODUCTION FLASH PROCESS R. Rachlitz, J. Holzhey, W. Böhme, H. Bohmeier, H. Gärtner: SULPHUR DISTRIBUTION, PRINCIPLE OF SOLIDIFICATION AND THE MORPHOLOGY OF THE LIQUID-SOLID INTERFACE IN CONTINOUS COPPER CASTING H. Jaskolska., L. Waliś, C. Janusz: INVESTIGATIONS OF CALCIUM DISTRIBUTION IN GGG MONOCRYSTALS BY MEANS OF LABELLED ATOMS METHOD M. Harasimowicz, J. Palige: RADIOTRACER INVESTIGATIONS OF THE GLASS MELTING PROCESS IN TANK FURNACES G. Philipp, H. Hippius, K. Köpping, H. Ulrich: SUITABILITY OF DIFFERENT RADIOTRACERS FOR IDENTIFICATION OF HOMOGENIZING PROCESSES IN GLASS MELTING FURNACES H. Kupsch, W. Heller: AN ACCELERATOR PRODUCED SHORT-LIVED RADIONUCLIDE FOR THE TRACERTECHNIQUE OF GYPSUM IN A LARGE SCALE PRODUCTION PLANT OF GAS CONCRETE W. Stuchlik, A. Knobloch, B. Kupsch, H.-W. Thümmel, S. Volker: RADIOMETRIC RESIDUAL VOLUME MONITORING IN LARGE BINS USING A MICROCOMPUTER D. Eckstein, H.-G. Jäckel, H. Stechemesser, D. Espig: RADIAL DISTRIBUTION OF MATERIAL IN A BOND MILL DETERMINED BY RADIOTRACER TECHNIQUE A. Zeuner, K. Henning, M. Kiessling: INVESTIGATION OF THE MATERIAL TRANSPORT BEHAVIOUR OF TUBE- AND TROUGH- VIBRATION MILLS BY RADIOACTIVE INDICATORS H. Kupsch, W. Heller: A METHOD FOR THE DETERMINATION OF THE EFFICIENCY OF A WET MIXER K.-D. Weißenborn, H.-P. Chowanetz, H. Ulrich, K. Köpping: RADIOTRACER INVESTIGATIONS IN LARGE HOMOGENIZATION SILOS TO DETERMINE THE MOTION OF PARTICLES OF DIFFERENT SIZES G.-J. Beyer, M. Böttger, K. Eichhorn, H. Guratzsch, H. Kupsch, K. Regel, G. Winter: USING OF THE ROSSENDORF CYCLOTRON U-120 IN SCIENCE, MEDICINE AND TECHNOLOGY M. Waiblinger, T. Kuhrt, H. Bergmann, K. Hertwig, K. Köpping, H. Ulrich: RADIOTRACER INVESTIGATIONS IN ELECTROLYSE CELLS - SPECIAL PROBLEMS AND USE FOR PROCESS CONTROL K.-D. Rauchstein, H. Leder, W. Walter, K. Köpping, H. Ulrich: RADIOTRACER INVESTIGATIONS IN TECHNICAL MULTIPHASE SYSTEMS AND PRACTICAL USE FOR THE VALUATION OF HYDRODYNAMIC CONDITIONS IN CHEMICAL MULTISTAGE COLUMNES E. Iller, T. Klimkiewicz: OPERATION ANALYSIS OF DIGESTER IN THE CONTINUOUS COOKING PROCESS OF PINEWOOD CHIPS, ON THE GROUNDS OF RADIOTRACER INVESTIGATIONS H. Vocke: DETERMINATION OF RESIDENCE TIME DISPERSION OF POLYMER MELTS IN SPINNING MACHINES BY TRACER APPLICATION J. Flachowsky, H.-H. Deicke: A SIMPLE MONITORING TECHNIQUE TO MEASURE THE RADIOACTIVITY LEVEL OF MEMBRANE FILTERS J. Flachowsky: DETERMINATION OF THE KINETICS OF TRACE ELEMENT ADSORPTION ON SEMICONDUCTOR SURFACES USING RADIOANALYTICAL AND AUTORADIOGRAPHIC METHODS
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  • 6
    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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  • 7
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/21
    In: CRREL Report, 87-21
    Description / Table of Contents: The author measured time series of longitudinal (u) and vertical (w) velocity and temperature (t) and humidity (q) fluctuations with fast-responding sensors in the near-neutrally stable surface layer over a snow-covered field. These series yielded individual spectra and u-w, w-t, w-q and t-q cospectra, phase spectra and coherence spectra for nondimensional frequencies (fz/U) from roughly 0.001 to 10. With the exception of the u-w cospectra, all the spectra and cospectra displayed the expected dependence on frequency in an inertial or inertial-convective subrange. All, however, contained significantly more energy at low frequency than the Kansas neutral-stability spectra and cospectra. This excess low-frequency energy and the erratic behavior of the u-w cospectra imply that forested hills bordering the site on two sides were producing disturbances in the flow field at scales roughly equal to the height of the hills, 100 m. The phase and coherence spectra suggest that internal gravity waves were also frequently present, since the atmospheric boundary layer generally had slightly stable stratification. Consequently, at this complex site, turbulence alone determines the spectra and cospectra at high frequency; at low frequency the spectra and cospectra reflect a combination of topographically generated turbulence and internal waves. From the measured temperature and humidity spectra and the t-q cospectra, the author computed refractive index spectra for light of 0.55-micrometer and millimeter wavelengths. The refractive index spectra had shapes like the other scalar spectra: excess energy at low frequency and an inertial-convective subrange at high frequency.
    Type of Medium: Series available for loan
    Pages: v, 50 Seiten , Illustrationen
    Series Statement: CRREL Report 87-21
    Language: English
    Note: CONTENTS Abstract Preface Introduction Measurements Spectra u and w velocity spectra Temperature and humidity spectra Inertial-dissipation estimates Cospectra u-w cospectra w-t and w-q cospectra t-q cospectra Refractive index spectra Conclusions Literature cited
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  • 8
    Call number: ZSP-SCAR-570-7
    In: National Antarctic Research Report to SCAR, No. 7
    Type of Medium: Series available for loan
    Pages: 37 Seiten , 2 Beilagen
    ISSN: 0179-0072
    Series Statement: National Antarctic Research Report to SCAR 7
    Language: English
    Note: 1 Kartenbeilage unter dem Titel: Neuschwabenland (West) 〈1 : 2.000.000〉, Bildflugroutenübersicht Antarktis-Expediton 1983/84 = Aerial Survey Route Map. - 2. Ausgabe. - Frankfurt am Main : Institut für Angewandte Geodäsie (IfAG), 1985. , 1 Beilage unter dem Titel: Supplement to National Antarctic Research Report to SCAR, No. 7 (July 1985) , Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Members of Permanent Working Groups and Groups of Specialists of SCAR. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 84-October 85. - II. Planned Activities, October 1985 - October 1986. - References. - Addenda to Former Reports. - Index of Activities.
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  • 9
    Call number: AWI P2-90-0247
    Type of Medium: Monograph available for loan
    Pages: ca. 200 ungezählte Seiten , Illustrationen
    Language: English
    Note: TABLE OF CONTENTS. PART ONE: HISTORY AND DEVELOPMENTS OF ANTARCTIC COMMUNICATIONS. - CONSIDERATION OF TELECOMMUNICATIONS BY SCAR AND ANTARCTIC TREATY CONSULTATIVE PARTIES. - ANTARCTIC TREATY RESOLUTIONS ON ANTARCTIC COMMUNICATIONS. - WMO RESOLUTIONS AND PRINCIPLES ON ANTARCTIC COMMUNICATIONS. - 1. Introduction. - 2. Engineering principles of the GTS. - 3. Functions and responsibilities of Meteorological Telecommunications Centres. - 4. Characteristics of the networks of the GTS. - 5. Operational principles of the GTS. - 6. The transmission of meteorological data on the GTS. - 7. Collection and transmission of meteorological data. - 8. Data processing. - 9. Telecommunications system. - 10. Weather reporting by traverse parties. - 11. Automatic weather stations in the Antarctic. - 12. AIREP reports. - 13. Mobile ship stations. - OTHER RELEVANT RECOMMENDATIONS AND RESOLUTIONS. - APPENDICES. - APPENDIX I. - Manual on the Global Data Processing System. - Vol. II - regional aspects, the Antarctic. - Data-processing and meteorological service activities in the Antarctic. - APPENDIX II. - Stations and observational programs comprising the Basic Synoptic Network in the Antarctic. - APPENDIX III. - Network of CLIMA T and CLIMAT TEMP reporting stations in the Antarctic. - APPENDIX IV. - Summary information of the collection of meteorological observational data by individual centres. - APPENDIX V. - Manual on the Global Telecommunications System. - Vol. II - regional aspects, the Antarctic. - Antarctic data telecommunications arrangements. - , TABLE OF CONTENTS. PART TWO: INTRODUCTION TO PART TWO. - RADIO PROCEDURES IN ANTARCTICA. - Introduction. - Distress and emergency procedures. - Control of circuits. - Traffic procedures. - USES OF CODES AND ABBREVIATIONS. - General. - Radio telegraphy. - Radio telephony. - Signal reporting codes. - Unofficial codes. - RADIO TELEPHONE OPERATIONS. - RADIO TELEPRINTER (RTTY) PROCEDURE. - General. - Preparation of teleprinter tapes. - General message format. - METEOROLOGICAL MESSAGES. - Introduction. - Format of meteorological messages. - Addressed messages. - Additional procedures. - Types of meteorological data messages. - List of stations carrying out meteorological observations. - Radio facsimile broadcasts of meteorological analyses charts. - Radio Teletype broadcasts of coded meteorological data. - ANTARCTIC STATIONS FITTED WITH INMARSAT FACILITIES. - EXCHANGE INFORMATION ON ANTARCTIC TELECOMMUNICATIONS. - EQUIPMENT AND SCHEDULES.
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  • 10
    Series available for loan
    Series available for loan
    Golden : Colorado School of Mines
    Associated volumes
    Call number: Z 92.0189(57)
    In: Quarterly of the Colorado School of Mines
    Type of Medium: Series available for loan
    Pages: 111 Seiten , 445 Seiten , 71 Seiten , 171 Seiten , Illustrationen, 1 Karte
    Series Statement: Quarterly of the Colorado School of Mines 57, 1-4
    Language: English
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  • 11
    Call number: ZSP-201-86/3
    In: CRREL Report, 86-3
    Description / Table of Contents: Experiments to study the melting of a horizontal ice sheet with a flow of water above it were conducted in a 35 m long refrigerated flume with a cross section of 1.2x1.2 m. Water depth, temperature, and velocity were varied as well as the temperature and initial surface profile of the ice sheet. The heat transfer regimes were found to consist of forced turbulent flow at high Reynolds numbers with a transition to free convection heat transfer. There was no convincing evidence of a forced laminar regime. The data were correlated for each of the regimes, with the Reynolds number, Re, or the Grashof number combined with the Reynolds number as Gr/Re to the 2.5 power used to characterize the different kinds of heat transfer. For water flowing over a horizontal ice sheet, the melting heat flux, for low flow velocities, was not found to drop below the value for the free convection case-488.5 W/sq m-as long as the water temperature exceeds 3.4 C. This is significant since the free convection melt values far exceed those for laminar forced convection. At the low flow velocities, the melting flux was not dependent upon the fluid temperature until the water temperature dropped below 3.4 C, when q sub c = 135.7 (Delta T). In general, the heat transfer was found to significantly exceed that of non-melting systems for the same regimes. This was attributed to increased free stream turbulence, thermal instability due to the density maximum of water near 4 C, and the turbulent eddies associated with the generation of a wavy ice surface during the melting.
    Type of Medium: Series available for loan
    Pages: vii, 85 Seiten , Illustrationen
    Series Statement: CRREL Report 86-3
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Non-melting heat transfer relations for horizontal surfaces Heat transfer for melting horizontal ice sheets Instrument setup, data acquisition and test procedures General Instrumentation Data acquisition Computer software Test procedures Data output from computer Equations used for data analysis Control volume and melting surface Control of variables Error analysis Experimental results and discussion Wave formation Temperature and velocity profiles in open channel flow Correlation of data Summary Literature cited Appendix A: Conversion equations for data acquisition equipment Appendix B: Computer code for data acquisition and analysis Appendix C: Typical test output Appendix D: Thermal properties of water and ice Appendix E: Error analysis Appendix F: Summary of test conditions Appendix G: Experimental data and calculated quantities, with inlet length
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  • 12
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-86/9
    In: CRREL Report, 86-9
    Description / Table of Contents: The bulk aerodynamic transfer coefficients for sensible (C sub H) and latent (C sub E) heat over snow and sea ice surfaces are necessary for accurately modeling the surface energy budget but are very difficult to measure. This report therefore presents a theory that predicts C sub H and C sub E as functions of the wind speed and a surface roughness parameter. The crux of the model is establishing the interfacial sublayer profiles of the scalars, temperature and water vapor, over aerodynamically smooth and rough surfaces. These interfacial sublayer profiles are delivered from surface-renewal model in which turbulent eddies continually sweep down to the surface, transfer scalar contaminants across the interface by molecular diffusion, and then burst away. Matching the interfacial sublayer profiles with the usual semilogarithmic inertial sublayer profiles yields the roughness lengths for temperature and water vapor. With these and a model for the drag coefficient over snow and sea ice based on actual measurements, the transfer coefficients are predicted. C sub E is always a few percent larger than C and H. Both decrease monotonically with increasing wind speed for speeds above 1 m/s, both increase at all winds speeds as the surface gets rougher. Both, nevertheless, are almost between 0.0010 and 0.0015.
    Type of Medium: Series available for loan
    Pages: vi, 26 Seiten , Illustrationen
    Series Statement: CRREL Report 86-9
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Aerodynamically rough surface Aerodynamically smooth surface Scalar transfer coefficients Conclusions Literature cited
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  • 13
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-86/8
    In: CRREL Report, 86-8
    Description / Table of Contents: In this work, numerical computations of heat transfer for freezing a shaft wall have been conducted. Both fixed mesh and deforming mesh finite-element methods are used. In the fixed mesh method, latent heat effects are accounted for through a δ function in the apparent heat capacity. In the deforming mesh method, an automatic mesh-generation technique with transfinite mappings is used, and in this method two different approaches are taken to evaluate the movement of the interface. The freeze-pipes are considered as point sources with irregular distribution. The advancement of the inner and outer boundaries of the frozen wall is found to be in agreement with the previously computed results
    Type of Medium: Series available for loan
    Pages: iii, 31 Seiten , Illustrationen
    Series Statement: CRREL Report 86-8
    Language: English
    Note: CONTENTS Abstract Preface Introduction Basic finite-element formulas Description of problem Finite-element equation-fixed mesh Finite-element equation-deforming mesh Transfinite mapping technique Computations and conclusions Literature cited Appendix A : Point heat sources Appendix B: Evaluation of the integral including latent heat (fixed mesh) Appendix C: Specification of [K] -deforming mesh Appendix D: Specifying δΤ/δn and the direction of mj for method I Appendix E: Procedures of method 2 Appendix F: Explanation of programs
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  • 14
    Call number: MOP 46624 / Mitte
    In: Effects of changes in stratospheric ozone and global climate
    Type of Medium: Monograph available for loan
    Pages: 4 Bände
    Series Statement: Effects of changes in stratospheric ozone and global climate
    Language: English
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  • 15
    Call number: MOP 46624/1 / Mitte
    In: Effects of changes in stratospheric ozone and global climate
    Type of Medium: Monograph available for loan
    Pages: VII, 379 Seiten
    Series Statement: Effects of changes in stratospheric ozone and global climate 1
    Language: English
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  • 16
    Call number: MOP 46624/2 / Mitte
    In: Effects of changes in stratospheric ozone and global climate
    Type of Medium: Monograph available for loan
    Pages: VII, 319 Seiten
    Series Statement: Effects of changes in stratospheric ozone and global climate 2
    Language: English
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  • 17
    Call number: MOP 46624/3 / Mitte
    In: Effects of changes in stratospheric ozone and global climate
    Type of Medium: Monograph available for loan
    Pages: VI, 293 Seiten
    Series Statement: Effects of changes in stratospheric ozone and global climate 3
    Language: English
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  • 18
    Call number: MOP 46624/4 / Mitte
    In: Effects of changes in stratospheric ozone and global climate
    Type of Medium: Monograph available for loan
    Pages: VI, 193 Seiten
    Series Statement: Effects of changes in stratospheric ozone and global climate 4
    Language: English
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  • 19
    Series available for loan
    Series available for loan
    Leipzig : Academy of Sciences of the GDR, Central Institute of Isotope and Radiation Research
    Associated volumes
    Call number: AWI G6-19-91927-1
    In: Third Working Meeting Radioisotope Application and Radiation Processing in Industry, Vol. 1
    Type of Medium: Series available for loan
    Pages: 375 Seiten , Illustrationen
    ISSN: 0323-8776
    Language: English
    Note: CONTENTS VOLUME I PART 1: PLENARY AND DISCUSSION LECTURES R.J.B. Hadden: RADIONUCLIDES FOR PROCESS CONTROL AND INSPECTION J. Guizerix: TRENDS AND OPEN QUESTIONS IN INDUSTRIAL TRACER APPLICATIONS A. S. Shtan, V. A. Mashinin Zh.I. Matalygina: NEUTRON ACTIVATION ANALYSIS OF GEOLOGICAL SAMPLES WITH THE APPLICATION OF RADIONUCLIDE NEUTRON SOURCES W. Michaelis: RADIONUCLIDES IN ENVIRONMENTAL RESEARCH AND PROTECTION J.K. Miettinen: RADIONUCLIDES IN ENVIRONMENT J. W. Leonhardt: RADIOISOTOPES IN ENERGETICS K. Przewlocki: APPLICATION OF NUCLEAR TECHNIQUES IN MINING INDUSTRY K. Wetzel: TRACERS IN GEOCHEMICAL AND ENVIRONMENTAL RESEARCH A. K. Pikaev: ENVIRONMENTAL APPLICATION OF RADIATION PROCESSING R. Otto: LABELLED COMPOUNDS FOR TRACER INVESTIGATIONS IN INDUSTRY R. Otto, H.-G. Könnecke, D. Luther, P. Hecht: RADIONUCLIDES FOR PROCESS ANALYSIS - PROBLEMS AND EXAMPLES Z. Málek: PRESENT STAGE OF CO-OPERATION OF THE CMEA MEMBER COUNTRIES IN THE FIELD OF ISOTOPE AND RADIATION TECHNOLOGY E.A. Abramyan: HIGH POWER ELECTRON ACCELERATORS IN RADIATION PROCESSING J. Sivinski: CURRENT AND FUTURE INITIATIVES OF THE U.S. DEPARTMENT OF ENERGY IRRADIATION PROGRAM ACTIVITIES J. Bös, J. Schmidt, U. Decker, H. Mai, L. Richter: ON THE APPLICATION OF SOME METHODS FOR THE INVESTIGATION OF RADIATION-INDUCED PROCESSES IN POLYETHYLENE H.-J. Heinrich, K. Posselt, W. Hädrich, L. Röhr, D. Flügge: ASPECTS OF IRRADIATION TECHNOLOGY CONCERNING THE CROSSLINKING OF CABLE AND WIRE INSULATIONS AND OF TUBES BY HIGH ENERGY ELECTRONS P. Popp, J.W. Leonhardt, G. Oppermann, H. Merten: THE HELIUM-DETECTOR: THEORY AND PRACTICE H.-H. Deicke: ASPECTS OF RADIATION PROTECTION IN THE APPLICATION OF RADIOTRACERS FOR RESEARCH IN INDUSTRIAL PLANTS
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  • 20
    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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  • 21
    Call number: ZSP-201-88/1
    In: CRREL Report, 88-1
    Description / Table of Contents: The Cornish-Windsor bridge is the longest covered bridge in the United States and has significant historical value. At a large peak flow, dynamic ice breakup of the Connecticut River can threaten the bridge and cause flood damage in the town of Windsor, Vermont. Throughout the 1985-86 winter we regularly monitored ice conditions, including a midwinter dynamic ice breakup on 27 January. We conducted controlled release tests over the operating range of the turbines at Wilder Dam upstream during both open water and ice cover conditions. These data and observations were analyzed in light of more than 60 years of temperature and discharge records. Our analysis indicates that river regulation presents alternatives for ice management that would minimize the probability of bridge damage and flooding during breakup. The flow can be regulated early in the winter to promote the growth of a stable ice cover, minimizing the total ice production in the reach. In the weeks prior to breakup, sustained releases and above-freezing air temperatures cause melting, weakening and gradual breakup of the ice, greatly reducing the flooding potential. Also, it is possible to produce a controlled ice breakup prior to an imminent natural event at lower stage and discharge. All of these ice control alternatives have associated power production costs.
    Type of Medium: Series available for loan
    Pages: iii, 21 Seiten , Illustrationen
    Series Statement: CRREL Report 88-1
    Language: English
    Note: CONTENTS Abstract Preface Introduction Background Analysis of historical data Field observations Controlled release tests January 1986 ice breakup Connecticut River ice control Minimizing ice production Hydrothermal melting Controlled ice breakup Conclusions Literature cited Appendix A: Detailed ice breakup chronology
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  • 22
    Series available for loan
    Series available for loan
    Leipzig : Academy of Sciences of the GDR, Central Institute of Isotope and Radiation Research
    Associated volumes
    Call number: AWI G6-19-91927-4
    In: Third Working Meeting Radioisotope Application and Radiation Processing in Industry, Vol. 4
    Type of Medium: Series available for loan
    Pages: XIX, Seite1097-1458 , Illustrationen
    Language: English
    Note: VOLUME IV PART 2: POSTER CONTRIBUTIONS (continued) P. Rudolph, A. Lange, J. Flachowsky: THE DETERMINATION OF GOLD DEPTH DISTRIBUTION IN SEMICONDUCTOR SILICON - POTENTIAL INTERFERENCES INHERENT IN NAA BY RADIATION DAMAGES E. Hoentsch, J. Flachowsk: INVESTIGATION OF NICKEL-PLATING ON SEMICONDUCTOR SILICON WAFERS K. Mauersberger, J. Flachowsky: POSSIBLE LOSSES OF TRACE AND ULTRATRACE ELEMENTS DURING PRECONCENTRATION OF SEMICONDUCTOR-GRADE REAGENTS H. Wagler, J. Flachowsky: A SIMPLE CHEMICAL METHOD FOR THE SEPARATION OF PHOSPHORUS INTERFERING THE TRACE ELEMENT DETERMINATIONS BY NEUTRON ACTIVATION ANALYSIS IN HIGH DOPED SILICON WAFERS H.-J. Große, J . Adler, H.-R. Döring, H. Nietzschmann: APPLICATION OF THE AEROSOLIONIZATION GAS ANALYZER AIG IN MICROELECTRONICS M. Kosinova, P. Tendera: WEAR INVESTIGATION OF MACHINE PARTS BY CHARGED PARTICLES SURFACE ACTIVATION J. Kras: DETERMINATION OF SLIDE BEARINGS WEAR IN DIESEL ENGINES K. Eichhorn, P. Hammer, S. Turuc, Ch. Eifrig: PRECISE ACTIVATION FOR WEAR STUDIES AT THE ROSSENDORF TANDEM ACCELERATOR P. Hammer, K. Eichhorn, Ch. Eifrig: A STUDY OF WEAR IN REFRIGERATING MACHINES USING THIN LAYER ACTIVATION A. Kalicki., L. Waliś: THE PRINCIPLE OF THE β-X INTERNAL EXCITATION APPLICATION FOR DETERMINATION OF ELEMENTS IN THIN METALLIC FILMS E. Kowalska, P. Urbański: DETERMINATION OF TIN AND LEAD IN GALVANIC BATH AND LEAD IN Sn-Pb PLATINGS WITH SIMULTANEOUS COATING THICKNESS MEASUREMENT K. Mauersberger, B. Bayerl: DETERMINATION OF Tc-99 BY FLAME AAS B. Machaj, F. Zrudelny, A. Sikora, J. Jaszczuk: MICROPROCESSOR ISOTOPE GAUGES FOR MEASUREMENT OF COATING THICKNESS AND OF AIR DUST POLLUTION Z. Joks, M. Krejci: APPLICATION OF RADIOISOTOPES FOR CORROSION TESTS OF INDUSTRIAL PLASTICS G. Hartmann, P. Kulicke, C. Jonas, A. Walter: INVESTIGATION ON CHLORIDE-INITIATED STRESS CORROSION OF STAINLESS STEEL BY USE OF CHLORINE-36 AND AUTORADIOGRAPHY J. Flachowsky, P. Kulicke, G. Hartmann, N. Schütze: LOCALIZATION OF THE ORIGIN OF DEFECTS IN HIGH-CLASS CASTINGS BY RADIOTRACER TECHNIQUES AND AUTORADIOGRAPHY H. Kupsch, H. Bruchertseifer, W. Heller: METHOD FOR THE RAPID DETECTION OF LEAKAGES IN OIL PIPES A.G. Chmielewski: RADIOTRACERS IN SOME INDUSTRIAL AND ENVIRONMENTAL PROBLEMS S. Szpilowski, A. Owczarczyk: INVESTIGATION OF TRANSPORT OF EFFLUENT IN NATURAL STREAMS USING RADIOISOTOPE AND DYE TRACERS A. Owczarczyk, s. Szpilowski: APPLICATION OF RADIOISOTOPE TRACERS FOR BEDLOAD SEDIMENT TRANSPORT STUDY IN RIVERS AND MARINE BREAKER ZONE I. Röske, H.-C. Abendroth, D. Luther, H.-G. Könnecke: TRACER STUDIES ON THE REMOVAL OF WATER ENDANGERING SUBSTANOES FROM MUNICIPAL WASTE WATERS A. Zeuner, F. Hartmann: RESIDENCE TIME INVESTIGATION AND MATERIAL BALANCE FOR FRESH AND WASTE WATER IN A RAYON BY RADIOISOTOPE APPLICATION A.G. Chmielewski, A. Dobrowolski: THE FALL OF EQUALIZATION MYTH-RADIOTRACER INVESTIGATIONS OF THE CASE J. Halova, J. Schön, J. Thýn: THE ANALYSIS OF DATA FROM TRACER EXPERIMENTS WITH THE FLOW APPARATUSES FOR RADWASTE MANAGEMENT S. Mothes, P. Popp, G. Oppermann, J. Baumbach: AIR POLLUTION MEASUREMENTS WITH ELECTRON CAPTURE DETECTORS (ECD) C. Ghounchev: ACTIVATION ANALYSIS OF HEAVY METALS IN SOIL AND PLANTS IN SOME INDUSTRIAL REGIONS OF THE COUNTRY M. Borkowski, W. Smulek: RADIONUOLIDES IN STUDYING THE SORPTION OF METALS BY CHITIN AND CHITOSAN R. Bäuerlein: EVALUATION OF THE DEGREE OF CROSSLINKING OF HEAT SHRINKABLE PRODUCTS K. Posselt, W. Hädrich: CHARACTERIZATION OF THE DEGREE OF CROSS-LINKING IN RADIATION CROSS-LINKED LOW AND HIGH DENSITY POLYETHYLENES E. Takács: RADIATION CROSS-LINKING OF PLASTICIZED PVC WITH POLYFUNCTIONAL MONOMERS W. Hädrich, K. Posselt, C. Lippmann, H. Wagner, H.-J. Heinrich: DEPTH DOSE IN ELECTRON IRRADIATED POLYETHYLENE LAYERS IN DEPENDENCE ON THE ANGLE OF INCIDENCE U. Decker, J. Bös, L. Richter, M. Remer: CHARGE ACCUMULATION AND STORAGE IN POLYETHYLENE IRRADIATED WITH PULSES OF FAST ELECTRONS E. Jaworska: THE INFLUENCE OF IRRADIATION TEMPERATURE ON STRESSES IN DEFORMED POLYETHYLENE W. Hädrich, T. Nestler, K. Posselt: THERMAL STRESS IN THE POLYETHYLENE INSULATION OFCABLES DURING IRRADIATION WITH HIGH ENERGY ELECTRONS W. Pekala, T. Achmatowicz: POST-RADIATION GRAFTING OF METHACRYLIC ACID ONTO POLYETHYLENE FILM J. Schmidt, H. Mai: ELECTRON BEAM CURING OF COATINGS E. Jaworska, S. Wawrzak, I. Kaluska: HEAT SHRINKABLE TAPES IN POLAND A. Robalewski et al.: POLISH HEAT SHRINKABLE TUBING TECHNOLOGY S. Galant, W. Pekala, J. Rosiak: USING OF THE RADIATION TECHNOLOGY TO THE PREPARATION OF POLYMERIC MATRIX CAPABLE TO THE CONTROLLED RELEASE OF DRUG TO EYE R. Krejzler et al.: NEW ROUTINE POLYETHYLENE DOSIMETER: DOSE RANGE 40-400 kGy Z. Zimek: THE USE OF ELECTRICAL SENSORS OF RADIATION FOR DIGITAL CONTROL IN RADIATION PROCESSING Z. Bulhak et al.: RADIATION STERILIZATION WITH THE ELECTRON LINEAR ACCLERATOR LAE 13/9 M. Remer, W. Bogus, W. Pekala: FIRST EVALUATION OF THE GAMMA IRRADIATION CHAMBER OF THE TU ŁODZ BY MEANS OF THE CODES DOSKMF2 AND ISORADL O. Brede, R. Hermann, R. Mehnert: ORGANIC COOLANTS FOR NUCLEAR REACTORS W. Wroński, J. Wisłowski: THE LABORATORY TESTING SYSTEM FOR RADIATION RESISTANCE INVESTIGATIONS OF INTEGRATED CIRCUITS AUTHOR INDEX
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  • 23
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    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.
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    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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  • 24
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-87/22
    In: CRREL Report, 87-22
    Description / Table of Contents: This review discusses problems associated with the anomalous temperature-density relations of water. It covers a) onset of convection, b) temperature structure and natural convective heat transfer, and c) laminar forced convective heat transfer in the water/ice system. The onset of convection in a water/ice system was found to dependent on thermal boundary conditions, not a constant value as in the classical fluids that have a monotonic temperature-density relationship. The water/ice system also exhibits a unique temperature distribution in the melt layer immediately after the critical Rayleigh number is exceeded and soon after it establishes a more or less constant temperature region progressively deepening as the melt layer grows. The constant temperature is approximately 3.2°C for water layers formed from above but varies for melt layers from below. The heat flux across the water/ice interface was found to be a weak power function and to increase linearly with temperature for melted layers from above and below, respectively.
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    Pages: vi, 43 Seiten , Illustrationen
    Series Statement: CRREL Report 87-22
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Analytical studies on the onset of convection in a horizontal water layer Experimental studies on the onset of convection in a circular horizontal melt layer Temperature structure and heat transfer In a horizontal layer In a circular horizontal melt layer pHeat transfer studies in nonplanar geometries Forced convective heat transfer over a melting surface Discussion and conclusions Onset of convection Temperature structure and natural convective heat transfer Laminar forced convective heat transfer Literature cited
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  • 25
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-88/14
    In: CRREL Report, 88-14
    Description / Table of Contents: An experimental study covering a mass flow rate ranging from 1.62 to 67.45 g/cm2-s and snow density varying from 0.377 to 0.472 g/cm3 has been conducted. Pressure drops ranging from 0.012 to 2.868 gf/cm2 were recorded. A plot of the friction factor fp vs Rep (defined as the classical Reynolds number Re for fluid flow through conduits) showed a good representation of all the experimental data. The least-squares analysis resulted in an expression of f sub p = 118/Rep to the 1.095 power for snow, in comparison with the expression f sub p = 64/Rep developed for fluid flow through porous media of randomly packed metallic and nonmetallic materials of spherical and nonspherical shapes.
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    Pages: iv, 18 Seiten , Illustrationen
    Series Statement: CRREL Report 88-14
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Experimental setup and procedure Experimental results Discussion and conclusions Literature cited
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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-201-88/18
    In: CRREL Report, 88-18
    Description / Table of Contents: The results of a laboratory testing program, carried out to compare two independent methods for determining the unfrozen water content of soils, are described. With the time domain reflectometry method, the unfrozen water content is inferred from a calibration curve of apparent dielectric constant vs volumetric water content, determined by experiment. Previously, precise calibration of the TDR technique was hindered by the lack of a reference comparison method, which nuclear magnetic resonance now offers. This has provided a much greater scope for calibration, including a wide range of soil types and temperature (unfrozen water content). The results of the testing program yielded a relationship between dielectric constant and volumetric unfrozen water content that is largely unaffected by soil type, although a subtle but apparent dependency on the texture of the soil was noted. It is suggested that this effect originates from the lower valued dielectric constant for absorbed soil water. In spite of this, the general equation presented may be considered adequate for most practical purposes. The standard error of estimate is 0.015 cc/cc, although this may be reduced by calibrating for individual soils. Brief guidelines on system and probe design are offered to help ensure that use of the TDR method will give results consistent with the relationship presented.
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    Pages: ii, 16 Seiten , Illustrationen
    Series Statement: CRREL Report 88-18
    Language: English
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  • 27
    Call number: MOP 46275 / Mitte ; MOP 46375 / Mitte
    Type of Medium: Monograph available for loan
    Pages: VIII, 268 Seiten , Illustrationen
    ISBN: 0-948090-00-6
    Language: English
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  • 28
    Monograph available for loan
    Monograph available for loan
    New York [u.a.] : Wiley [u.a.]
    Call number: PIK M 490-19-93049
    Type of Medium: Monograph available for loan
    Pages: XV, 329 Seiten , Illustrationen, Diagramme , 25 cm
    ISBN: 0471849677 , 2705659803
    Uniform Title: L'ordre dans le chaos 〈engl.〉
    Language: English
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  • 29
    Monograph available for loan
    Monograph available for loan
    Hong Kong : Royal Observatory
    Call number: MOP 47270(1987) / Mitte
    Type of Medium: Monograph available for loan
    Language: English
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  • 30
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-88/11
    In: CRREL Report, 88-11
    Description / Table of Contents: This study assesses the effects of atmospheric icing on broadcast transmission reflections on two mountains- Mount Mansfield in northern Vermont and Mount Washington in New Hampshire. Experience and theory suggest that antenna ice accretions produce large signal reflections. Correlations between reflection coefficients and ice accretions on Rosemount ice detectors adjacent to antennas were low and occasionally negative. The unexpected correlations may be due to factors not measured, such as antenna tuning, ice type and ice location on the antenna system. Other confounding factors may include ice detector performance and methods used to compute antenna ice accretions from the ice detectors.
    Type of Medium: Series available for loan
    Pages: iii, 19 Seiten , Illustrationen
    Series Statement: CRREL Report 88-11
    Language: English
    Note: CONTENTS Abstract Preface Introduction Data sources Study location and icing conditions Icing data Antenna reflection data Data preparation Analyses Conclusions Literature cited
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  • 31
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-88/13
    In: CRREL Report, 88-13
    Description / Table of Contents: In many sea ice engineering problems the ice sheet has been assumed to be a homogeneous plate whose mechanical properties are estimated from the bulk salinity and average temperature of the ice sheet. Typically no regard has been given to the vertical variation of ice properties in the ice sheet or to the time of ice formation. This paper first reviews some of the mechanical properties of sea ice, including the ice tensile, flexural and shear strengths, as well as the ice modulus. Equations for these properties are given as functions of the ice brine volume, which can be determined from the ice salinity and temperature. Next a numerical, finite difference model is developed to predict the salinity and temperature profiles of a growing ice sheet. In this model ice temperatures are calculated by performing an energy balance of the heat fluxes at the ice surface. The conductive heat flux is used to calculate the rate of ice growth and ice thickness by applying the Stefan ice growth equation. Ice salinities are determined by considering the amount of initial salt entrapment at the ice/water interface and the subsequent brine drainage due to brine expulsion and gravity drainage. Ice salinity and temperature profiles are generated using climatological data for the Central Arctic basin. The predicted salinity and temperature profiles are combined with the mechanical property data to provide mechanical property profiles for first-year sea ice of different thicknesses, grown at different times of the winter. The predicted profiles give composite plate properties that are significantly different from bulk properties obtained by assuming homogeneous plates. In addition the failure strength profiles give maximum strength in the interior of the sheet as contrasted with the usual assumption of maximum strength at the cold, upper ice surface. Surprisingly the mechanical property profiles are only a function of the ice thickness, independent of the time of ice formation.
    Type of Medium: Series available for loan
    Pages: v, 63 Seiten , Illustrationen
    Series Statement: CRREL Report 88-13
    Language: English
    Note: CONTENTS Abstract Preface Introduction Structure Composition Mechanical properties Strength Elastic constants The temperature-salinity model Temperature profiles Salinity profiles Composite plate properties Results Conclusions Literature cited Appendix A: Details of the equations for ice surface temperature and conductive heat flux Appendix B: Calculated profile and bulk properties of an ice sheet of varying thickness Appendix C: Calculated profile and bulk properties of 30- and 91-cm-thick ice sheets
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  • 32
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-88/16
    In: CRREL Report, 88-16
    Description / Table of Contents: Unfrozen water content as a function of temperature was measured in the laboratory using nuclear magnetic resonance (NMR) for a Windsor sandy loam soil. The data were related to previously measured soil moisture retention data through the modified Clapeyron equation with suitable adjustment for surface tension. The results show the usefulness of extending the soil freezing curve to temperatures only slightly below freezing and the soil water curve to very great suction.
    Type of Medium: Series available for loan
    Pages: iii, 42 Seiten , Illustrationen
    Series Statement: CRREL Report 88-16
    Language: English
    Note: CONTENTS Abstract Preface Introduction Soil variable ø SWC and SFC similarity Mathematical representation of SWC and SFC data NMR measurement of unfrozen water content Characterization of SWC Discussion Conclusions Literature cited Appendix A: Soil freezing curve data Appendix B: Error analysis Appendix C: Soil water curve data
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  • 33
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-89/2
    In: CRREL Report, 89-2
    Description / Table of Contents: A brash ice jam in the South Channel of the St. Clair River was profiled in February 1987 using a helicopter-borne short-pulse radar operating in the UHF band near 500 MHz. During the same time, measurements of the brash ice depth and water temperature were made from a Coast Guard icebreaker. The returned radar pulses consisted of a strong coherent reflection from the water surface, preceded (and followed) by incoherent returns from the brash ice. The measured waveform time delays were then converted to mean freeboard height of the brash ice pieces above the water surface. Given the mean freeboard height, an estimate of the total brash ice thickness was made. This estimate was greater than the range of the direct shipboard measurements. The difference is believed due to differences between ice porosity above and below the water line, to melting within the ice and to partial submergence of some of the surface pieces. It is concluded that this technique could be used for mapping relative brash ice depth if the complexities of automating waveform analysis could be overcome.
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    Pages: iv, 25 Seiten , Illustrationen
    Series Statement: CRREL Report 89-2
    Language: English
    Note: CONTENTS Abstract Preface Introduction Objectives and procedures Equipment Radar Brash ice probe Temperature measurements St. Clair River ice conditions Results and discussion Thickness and temperature Size distribution Radar survey Discussion of errors Porosity Phase state of the ice Partial submergence of individual pieces Spectra of reflected energy Conclusions and recommendations Literature cited Appendix A: Laboratory verification of surface scattering from a simulated ice jam Appendix B: Display of digitized and processed data
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  • 34
    Monograph available for loan
    Monograph available for loan
    Warschau
    Call number: MOP 47772 / Mitte
    Type of Medium: Monograph available for loan
    Pages: Mappe mit 13 Dokumenten in russischer und englischer Sprache
    Language: Russian , English
    Note: 1. Osnovnye naučnye dostiženija v oblasti issledovanija kosmosa za poslednie gody i perspektiva do 2000 goda / V. M. Balebanov 2. Kosmičeskoe Materialovedenie / Ju. A. Osip'jan, Č. Barta, R. Galonzka, R. Kul', L. Fal'kon 3. 20 let issledovanija v oblasti geliofiziki i astrofiziki v programme interkosmos / B. Val'niček 4. Daetsja kratkija obzor suščectvujuščich orbital'nych stancija rassmatrivajutsja tendencii razvitija / Ju. P. Semenov, L. A. Gorškov 5. Meždunarodnye pilotiruemye polety po programme "Interkosmos" / P. I. Klimuk, Ju. A. Gagarina 6. Summary of the twenty-year cooperation and the prospects of studies on space physics within the framework of the Intercosmos Program 7. Issledovanija na biosputnikach / S. Baran'ski, K. Gecht, E. A. Il'in, L. Macho 8. Meteorology : Intercosmos 1967-1987 9. Utilizing data obtained by remote sensing of the earth / N. A. Armand, G. Ganzorig, J. Kolarzh, K. Marek, B. Nej, L. Ortega, To Kuang Tkhing 10. Indian Space Programme and the cooperation with Intercosmos / u. R. Rao, Y. S. Rajan 11. Short summary of the most important scientific-methodological and research activities in the field of remote sensing of the Earth , within the framework of the Intercosmos Program in the years 1975-1987 12. Razvitie eksperimental'noi techniki distancionnogo zondi-rovanija zemli / R. Joachim, E. Bach, A. Gšvindt, D. Mišev, Ja. L. Ziman 13. Ispol'zovanie sputnikovoj informacii v prognoze pogody / A. Burcev, G. Major, V. Šarov
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    Call number: MOP 47509 / Mitte
    Type of Medium: Monograph available for loan
    Pages: X, 171 Seiten , Illustrationen
    Language: English
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  • 36
    Call number: MOP 47453/1 / Mitte
    In: Veröffentlichungen des Zentralinstituts für Physik der Erde, 102
    Type of Medium: Monograph available for loan
    Pages: III, 396 Seiten , Illustrationen
    Series Statement: Veröffentlichungen des Zentralinstituts für Physik der Erde Nr. 102
    Language: English
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  • 37
    Call number: MOP 47453/2 / Mitte
    In: Veröffentlichungen des Zentralinstituts für Physik der Erde, 102
    Type of Medium: Monograph available for loan
    Pages: 325 Seiten , Illustrationen
    Series Statement: Veröffentlichungen des Zentralinstituts für Physik der Erde Nr. 102
    Language: English
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  • 38
    Call number: MOP 47453/3 / Mitte
    In: Veröffentlichungen des Zentralinstituts für Physik der Erde, 102
    Type of Medium: Monograph available for loan
    Pages: III, 333 Seiten , Illustrationen
    Series Statement: Veröffentlichungen des Zentralinstituts für Physik der Erde Nr. 102
    Language: English
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  • 39
    Call number: MOP 46028/1984 / Mitte
    In: World weather watch : Consolidated report on the voluntary co-operation programme including projects approved for circulation, 1984
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  • 40
    Call number: AWI G2-19-93054
    Type of Medium: Monograph available for loan
    Pages: 57 Blätter , Illustrationen
    Language: English , German
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  • 41
    Call number: AWI G6-19-93060
    Type of Medium: Monograph available for loan
    Pages: 6 Seiten, 29 Blätter, 7 Seiten
    Language: German , French , English
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  • 42
    Monograph available for loan
    Monograph available for loan
    New York : Springer
    Call number: MOP 47507 / Mitte
    Type of Medium: Monograph available for loan
    Pages: XVIII, 501 Seiten , Illustrationen
    Edition: Second edition
    ISBN: 3540966854 , 0387966854
    Series Statement: Universitext
    Language: English
    Note: CONTENTS Preface Preface to the Second Edition Introduction 1 Onset of Turbulence Part One - Classical Concepts in Turbulence Modeling Chapter I. Turbulent Flow 1. Equations of Fluid Dynamics and Their Consequences 1.1 Reynolds' Averaging Technique 1.2 Equations of Fluid Dynamics 1.3 Equation of Kinetic Energy 1.4 Equation of Heat Conduction 2. Reynolds' Stresses 2.1 Physical and Geometrical Interpretation of Reynolds' Stresses 2.2 Eddies and Eddy Viscosity 2.3 Poiseuille and Couette Flow 3. Length Theory 3.1 Prandtl's Mixing Length Theory 3.2 Mixing Length in Taylor's Sense 3.3 Betz's Interpretation of von Karman's Similarity Hypothesis 4. Universal Velocity Distribution Law 4.1 Prandtl's Approach 4.2 von Karman's Approach 4.3 Turbulent Pipe Flow with Porous Wall 5. The Turbulent Boundary Layer 5.1 Turbulent Flow Over a Solid Surface 5.2 Law of the Wall in Turbulent Channel Flow 5.3 Velocity Distribution in Transient Region of a Moving Viscous Turbulent Flow 5.4 A New Approach to the Turbulent Boundary Layer Theory Using Lumley's Extremum Principle Part Two - Statistical Theories in Turbulence Chapter II. Fundamental Concepts 6. Stochastic Processes 6.1 General Remarks 6.2 Fundamental Concepts in Probability 6.3 Random Variables and Stochastic Processes 6.4 Weakly Stationary Processes 6.5 A Simple Formulation of the Covariance and Variance for Incompressible Flow 6.6 The Correlation and Spectral Tensors in Turbulence 6.7 Theory of Invariants 6.8 The Correlation of Derivatives of the Velocity Components 7. Propagation of Correlations in Isotropic Incompressible Turbulent Flow 7.1 Equations of Motion 7.2 Vorticity Correlation and Vorticity Spectrum 7.3 Energy Spectrum Function 7.4 Three-Dimensional Spectrum Function Chapter III. Basic Theories 8. Kolmogoroff's Theories of Locally Isotropic Turbulence 8.1 Local Homogeneity and Local Isotropy 8.2 The First and the Second Moments of Quantities w-j(x-j) 8.3 Hypotheses of Similarity 8.4 Propagation of Correlations in Locally Isotropic Flow 8.5 Remarks Concerning Kolmogoroff1s Theory 9. Heisenberg's Theory of Turbulence 9.1 The Dynamical Equation for the Energy Spectrum 9.2 Heisenberg's Mechanism of Energy Transfer 9.3 von Weiszacker's Form of the Spectrum 9.4 Objections to Heisenberg's Theory 10. Kraichnan's Theory of Turbulence 10.1 Burgers' Equation in Frequency Space 10.2 The Impulse Response Function 10.3 The Direct Interaction Approximation 10.4 Third Order Moments 10.5 Determination of Green's Function 10.6 Summary of Results of Burgers' Equation in Kraichnan's Sense 11. Application of Kraichnan's Method to Turbulent Flow 11.1 Derivation of Navier-Stokes Equation in Fourier Space 11.2 Impulse Response, Function for Full Turbulent Representation 11.3 Formal Statement by Direct-Interaction Procedure 11.4 Application of the Direct-Interaction Approximation 11.5 Averaged Green's Function for the Navier-Stokes Equations 12. Hopf's Theory of Turbulence 12.1 Formulation of the Problem in Phase Space and the Characteristic Functional 12.2 The Functional Differential Equation for Phase Motion 12.3 Derivation of the ϕ-Equation 12.4 Elimination of Pressure Functional π from the ϕ-Equation 12.5 Forms of the Correlation for n=l and n=2 Chapter IV. Magnetohydrodynamic Turbulence 13. Magnetohydrodynamic Turbulence by Means of a Characteristic Functional 13.1 Formulation of the Problem in Phase Space 13.2 ϕ-Equations in Magnetohydrodynamic Turbulence 13.3 Correlation Equations 14. Wave-Number Space 14.1 Transformation to Wave-Number Space 14.2 The Spectrum Equations and Additional Conservation Laws 14.3 Special Case of Isotropic Magnetohydrodynamic Turbulence 15. Stationary Solution for ϕ-Equations 15.1 Stationary Solution for the Case λ=ν=0 15.2 Solution to the ϕ-Equations for Final Stages of Decay 16. Energy Spectrin 16.1 Energy Spectrum in the Equilibrium Range 16.2 Extension of Heisenberg's Theory in Magnetohydrodynamic Turbulence 17. Temperature Dispersion in Magnetohydrodynamic Turbulence 17.1 Turbulent Dispersion 17.2 Formulation of the Problem 17.3 Universal Equilibrium 18. Temperature Spectrum for Small and Large Joule Heat Eddies 18.1 Small Joule Heat Eddies 18.2 Large Joule Heat Eddies 19. The Temperature Spectrum for the Joule Heat Eddies of Various Sizes 19.1 The Viscous Dissipation Process 19.2 The Joule Heat Model 19.3 The Calculation of the Temperature Spectrum 19.4 Effect of Viscous Dissipation on the Temperature Distribution 20. Thomas' Numerical Experiments 20.1 Turbulent Dynamo Competing Processes 20.2 Nondissipative Model System λ=ν=0 20.3 Numerical Experiments 21. Some Further Improvements of Dispersion Theory in Magnetohydrodynamic Turbulence 21.1 Remarks on the Turbulent Dispersion of Temperature for Rm〉〉R〉〉l 21.2 Heat Equation for Conductive Cut-Off Wave Number for H(k) 21.3 Solution of the Heat Equation 22. A Solution for the Joule-Heat Source Term 22.1 Physical Introduciton 22.2 Form of the Source Function and Particular Solution 22.3 The Joule Heating Spectrum 22.4 The Range of Values α1, α2, α3, σ and Asymptotic Solution of τ-integral 22.5 Evolution of τ-Integral Eq. (22.29) 23. Results for the θ2 Spectrum with Joule Heating 23.1 The Asymptotic Behavior of the Solutions 23.2 The Most Probable Form of the θ2-Spectrum Chapter V. Contemporary Turbulence 24. Recent Developments in Turbulence Through Use of Experimental Mathematics - Attractor Theory 24.1 Things That Change Suddenly 24.2 Order in the Chaos 24.3 Attractor Theory in Turbulent Channel Flows 25. Recent Developments in Experimental Turbulence 25.1 Coherent Structure of Turbulent Shear Flows Appendices Appendix A -- Derivation of Correlation Equations (13.51-13.62) Appendix B -- Derivation of Spectrum Equations (14.45-14.46) Appendix C -- Fourier Transforms (18.10) Appendix D -- The Time Variation of Eq. (18.3) Appendix E -- The Time Variation of Eq. (18.19) Bibliography Author Index Subject Index
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  • 43
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-53
    In: Research report / Cold Regions Research and Engineering Laboratory, 53
    Description / Table of Contents: Summary: The results of investigations on the structural changes of Greenland snow during age-hardening in the first 49 hr after ejection by a Peter snow miller from a trench 4.7 ft deep are reported, and the method of study is described. The samples of snow were taken at various distances from the trench 1, 3, 14, 25, and 49 hr after deposition, and their changes were studied as a function of time and distance from the trench. The porosity remained constant at an average of 50 ± 3%. The number of grains/cm^2 decreased with time and increased with distance from the trench because of the different speeds of sedimentation and wind sifting. The mean grain cross-section showed a similar dependence. The relative length of grain boundaries increased with time and slightly with distance from the trench, while the mean length of new grain-to-grain boundaries increased with age and decreased with distance from the trench. The mean number of adjacent grains per grain vs. relative length of grain boundaries showed a linear relation. A slight increase of new boundaries with increasing number of neighbors was also observed. Suggestions for a precise study of the age-hardening process of snow are made.
    Type of Medium: Series available for loan
    Pages: v, 15, A5 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 53
    Language: English
    Note: CONTENTS Preface Summary Methods of testing Sampling Preparation of samples Preparation of structure pictures Results Influence of time and place Porosity Number of grains/cm2 Mean grain cross section Relative length of grain boundaries (KM ratio) Mean number of adjacent grains per grain Number of new boundaries/cm 2 Mean length of new grain-to-grain boundaries Some interrelations of the structure data Structure of a 1-yr old Peter snow Suggestions for an exact study of the age-hardening process of snow References Appendix: Structure pictures
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  • 44
    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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  • 45
    Series available for loan
    Series available for loan
    Bratislava : Hydrometeorological Service of Czechoslovakia
    Call number: MOP 46808 / Mitte
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    Language: English
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  • 46
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-63
    In: Research report / Cold Regions Research and Engineering Laboratory, 63
    Description / Table of Contents: Summary: Experiments have been carried out on the plastic deformation of thick-walled snow-ice cylinders under hydrostatic pressure as a function of pressure and temperature. At constant circumferential stress and temperature the natural strain rate of closure is a constant. This constant varies with the circumferential stress according to a sine function and is exponentially dependent on temperature with an energy of activation of 14.1 kcal/mole at an average circumferential stress of 3.1 kg/cm^2. The mechanism of the plastic flow is in agreement with a mechanism proposed previously, that is, flow between grain boundaries takes place.
    Type of Medium: Series available for loan
    Pages: iv, 7 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 63
    Language: English
    Note: CONTENTS Preface Summary Experimental Materials Apparatus Experimental results Deformation under constant hydrostatic pressure Deformation as a function of hydrostatic pressure Deformation as a function of temperature at constant pressure Discussion References
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  • 47
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-64
    In: Research report / Cold Regions Research and Engineering Laboratory, 64
    Description / Table of Contents: Summary: The distribution of temperature throughout an idealized ice cap is studied. The idealized ice cap is considered as one with a constant growth rate, without internal movement, subject to a linear climatic change and to a constant geothermal influx. The problem is treated as a Stefan-type problem and the solution is obtained by the principle of superposition. The results indicate that the temperature at the base of the ice cap rises with time and eventually would reach the melting point of the ice. Under such conditions, it is concluded that the ice cap is not resting on a permafrost base as suggested by previous investigation.
    Type of Medium: Series available for loan
    Pages: iv, 8 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 64
    Language: English
    Note: CONTENTS Preface Summary Introduction Mathematical development Method of solution Discussion of results Base temperature Minimum temperature Effect of rate of growth Effect of geothermal influx Comparison with observed results References
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  • 48
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-67
    In: Research report / Cold Regions Research and Engineering Laboratory, 67
    Description / Table of Contents: Summary: The temperature distribution in snow subjected to gamma radiation from an operating nuclear reactor is analyzed mathematically, assuming that the effect of radiation is equivalent to a continuous heat source, the intensity of which is a function of the radial distance from the reactor. Steady-state solutions are derived for two cases: when the radial distance is 13 ft and when it is 19.1 ft. The results indicate that the temperature of the snow in certain regions in the several feet immediately below the foundation will exceed the design limit of 20°F. Increasing the shielding of the reactor will reduce the intensity of the radiation and snow temperature. Other possible ways to reduce the snow temperature include the use of refrigeration coils and the forcing of the atmospheric air through the snow.
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    Pages: iii, 4 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 67
    Language: English
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  • 49
    Call number: MOP 47171 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 293 Seiten , Illustrationen
    Language: English
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  • 50
    Monograph available for loan
    Monograph available for loan
    Helsinki : Valtion Painatuskeskus
    Call number: MOP 47551/2 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 520 Seiten
    Series Statement: Suomen Akatemian Julkaisuja / The Publications of the Academy of Finland 9/89
    Language: English
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  • 51
    Monograph available for loan
    Monograph available for loan
    Cambridge, Massachusetts : MIT Press
    Call number: PIK B 719-20-93057
    Type of Medium: Monograph available for loan
    Pages: VIII, 205 Seiten
    ISBN: 0262071118 , 0262570734 , 9780262570732
    Series Statement: MIT Press Classic
    Language: English
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  • 52
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    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-69
    In: Research report / Cold Regions Research and Engineering Laboratory, 69
    Description / Table of Contents: Summary: The relations between rate of snow accumulation, snow density, snow age, and depth below the surface are formulated in terms of a compactive viscosity factor, which is assumed to be a function of only density and temperature, with parameters which will vary with the snow-type sequences of different climatic areas of high polar glaciers. The theory could be useful in an analysis of the data obtained from the large number of snow pits in Greenland, Ellesmere Island,and Antarctica.
    Type of Medium: Series available for loan
    Pages: iv, 8 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 69
    Language: English
    Note: CONTENTS Preface Summary Introduction The Sorge depth-density curve Generalization for time-variable rate of accumulation Path of a particle on the surface y=B(h,t) Effect of temperature Computational procedure Densification under high loads References
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  • 53
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-66
    In: Research report / Cold Regions Research and Engineering Laboratory, 66
    Description / Table of Contents: Summary: A simple theory is proposed for crack formation and development by soil desiccation on the basis of laboratory experiments utilizing soil samples (Bloomington till) with max particle size of 1 mm diam. held in flat wooden containers. The crack pattern is more dependent on the thickness of the soil sample than on temperature or humidity. Some effect is caused also by differences in the bottom material of the containers. The area of cells made by crack patterns has a log normal size distribution. Total length of cracks decreases with increase in sample thickness. The number of sides of cells also depends on the thickness. Cracking was found to begin from the center of the soil layer and to propagate to the surface or bottom with non-uniform speed.
    Type of Medium: Series available for loan
    Pages: vi, 48, A4 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 66
    Language: English
    Note: CONTENTS Preface Summary Introduction Soil material Soil Preparation of the soil material Containers Temperature and humidity of the air Moisture content and dry density of the soil Experimental procedures and results General procedures Definition of the characteristics of cracking of soil Cracking moisture content Size of cells made by cracking of the soil Length of cracks Number of sides of cells Development of cracks Additional experiments Interfacial fracture markings Method of auxilliary tests on physical properties of the soil Elastic constants of the soil Shrinkage of soil due to desiccation Tests of the adhesion between the soil and the bottom material Results of auxiliary tests Elastic constants of the soil Free shrinkage process of the soil due to desiccation Adhesion between the soil and glass or wood Mechanism of crack formation due to the desiccation of soil Geometric interpretation Mechanical interpretation Conclusions References Appendix: Table of experiments
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  • 54
    Series available for loan
    Series available for loan
    Pasay City, Philippines : Typhoon Committee Secretariat
    Associated volumes
    Call number: MOP 46950(1987) / Mitte
    In: ESCAP/WMO Typhoon Committee annual review, 1987
    Type of Medium: Series available for loan
    Series Statement: ESCAP/WMO Typhoon Committee annual review 1987
    Language: English
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  • 55
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-78
    In: Research report / Cold Regions Research and Engineering Laboratory, 78
    Description / Table of Contents: Summary: This climatological study makes use of the temperature, wind, and precipitation records from 12 stations on the Greenland Ice Sheet. Many of these stations were not in operation for concurrent periods and records for a year or more were available from only a few of them. The mean, mean maximum, mean minimum, absolute maximum, and absolute minimum temperatures were computed from the records. The highest absolute maximum temperature reported was 44°F at Mint Julep in southwestern Greenland. The lowest absolute minimum was -94°F at Northice in northern Greenland. This study shows that the prevailing wind usually was from the direction of the high central area of the ice sheet. Stations on the west slope had prevailing winds with an easterly component whereas stations on the east slope had prevailing winds with a westerly component. The wind speed varied from 0 to approximately 60 kt, but was predominantly in the 0 to 20 kt range. At some of the stations on the ice sheet, precipitation was measured in precipitation gages, at others it was measured as surface accumulation. At many locations the annual accumulation was determined from stratigraphic studies of the snow profile. The number of days on which snow occurred, expressed as percent of total days of observation, was used as an index to the amount of snowfall. The mean annual accumulation shows precipitation to be heavier on the west slope of the ice sheet than in other areas. The precipitation records at Northice indicate that the annual precipitation in that part of northern Greenland may be very light. The means for the various climatological parameters covered in this study are presented in tables and on a climatological map which presents a cartographic picture of the overall climatology of the Greenland Ice Sheet.
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    Pages: iv, 13, A5, B4 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 78
    Language: English
    Note: CONTENTS Preface Summary Introduction Air temperature Wind direction and speed Precipitation and accumulation Climatological map for the Greenland Ice Sheet Appendix A: Temperature data Appendix B: Precipitation data
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  • 56
    Call number: ZSP-202-74
    In: Research report / Cold Regions Research and Engineering Laboratory, 74
    Description / Table of Contents: Summary: The heat exchange of a snow cover was studied with respect to the effects of heat transfer processes on metamorphic action within the snow cover and the prediction of heat fluxes and the resulting changes in snow cover characteristics from standard meteorological information. Data collected at the USA SIPRE Keweenaw Field Station, Houghton, Michigan, were used to determine heat transfer by thermal radiation, convection, and conduction. The percent of daily incident solar radiation at the outer limits of the earth's atmosphere which reaches the snow surface ranged from 94 with clear skies to less than 20 with an overcast less than 1000 ft high and precipitation. Average diurnal patterns of total solar radiation may be estimated for various cloudiness. Total solar radiation with overcast clouds less than 5000 ft high averaged about 70% of the clear-sky radiation. Atmospheric radiation related to temperatures during clear nights gave a curve paralleling the black body radiation curve, although about 7 ly/hr lower in absolute values. Atmospheric radiation during clear skies was about 9 ly/hr less than that with low overcast conditions with no snow falling. In the presence of falling snow, total hemispherical radiation was about 5 ly/hr greater than with no snow falling but with' similar low overcast cloudiness. With low overcast cloudiness, the net long-wave exchange averaged about -17 ly/day in January and -8 ly/day in February. With clear skies the net long-wave exchange averaged about -128 ly/day in January and -120 ly/day in February. The net radiation exchange with clear skies during midday remained slightly negative in January and became increasingly positive through February. The highest positive values of net radiation occurred during the day with low overcast or broken cloudiness and precipitation. The largest net radiational loss of 9 ly/hr occurred at night with clear skies and nearly calm winds. The average magnitude of surface temperature inversions over snow was related to observations of cloudiness and wind speeds for both day and night. With winds of 12 knots or greater, the temperature difference in the first 10m was usually near adiabatic even with clear skies at night. During the day inversions seldom exceeded 1-2°C, and a slight lapse commonly occurred during low overcast conditions and moderate winds. The Liljequist method for computing turbulent heat transfer and conductive heat transfer in snow was used. Average air temperature is shown to exert a pronounced effect upon snow heat conduction, cold content and temperature profile. Average temperature differences through the snow, responsible for metamorphic action leading to the formation of depth hoar, can be estimated by a knowledge of the previous 20-hr average temperature. Snow hardness distributions, indicators of supporting capacity of snow, can be estimated graphically from snow density and depth observations.
    Type of Medium: Series available for loan
    Pages: v, 73 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 74
    Language: English
    Note: CONTENTS Preface Summary Part 1. Data analysis Introduction Estimating snow temperature distributions from meteorological information Radiative heat transfer Short-wave radiation Long-wave radiation Net radiation exchange Convective heat transfer Liljequist method Monin-Obukhov method Conductive heat transfer Heat transfer in soil Heat transfer in snow Direct relationships Measurement of snow properties Cold content of snow Vertical temperature gradient in snow and its effects Snow hardness Summary of the analysis Thermal radiative heat transfer Convective heat transfer Heat transfer processes in soil and snow Part II. Tabulated data for Keweenaw Field Station Description of data Location and periods of measurement Instrumentation Data processing Explanation of tables Thermal radiation data, Keweenaw Field Station References
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  • 57
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-80
    In: Research report / Cold Regions Research and Engineering Laboratory, 80
    Description / Table of Contents: From the Introduction: During the last few years, there has been an increased interest in developing a rational explanation for the rather considerable variation in such bulk properties of sea ice as its strength, density, thermal conductivity, latent heat of melting, and coefficient of thermal expansion. Of these properties, sea-ice strength has received by far the most attention for practical reasons.
    Type of Medium: Series available for loan
    Pages: iv, 30, A6, B10, C2, D5 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 80
    Language: English
    Note: CONTENTS Preface Summary Introduction Experimentation Method of growing salt ice Strength test procedures Bulk properties of salt ice Phase relations Density and air content Strength results Strength of fresh-water ice Strength of NaCl ice as a function of brine volume Strength of NaCl· 2H2O ice as a function of the relative volume of solid salt Effect of thermal history on salt-ice strength Phase hysteresis Geometric hysteresis Effect of short-term cooling on the strength of fresh-water and NaCl·2H2O ice Effect of the volume of inclosed air on the strength of salt ice Conclusions NaCl ice Sea ice References Appendix A: Volume of brine and NaCl· 2H2O in NaCl ice as a function of salinity and temperature Appendix B: Ring test results Normal test sequences Appendix C: Ring test results Hysteresis test sequences Appendix .b: Ring test results Thermal history test sequences
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  • 58
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-84
    In: Research report / Cold Regions Research and Engineering Laboratory, 84
    Description / Table of Contents: Summary: The law of sliding of ice over bedrock is generalized to include the effect of the presence of a longitudinal stress. The sliding velocity thus depends on both the shear stress acting at the bottom of an ice mass and the longitudinal stress. With this generalized law, it is still possible to make a one-dimensional analysis of the problem of calculating the profile of an ice cap or glacier, such as was carried out by Nye, and yet introduce the effect of large longitudinal stresses. As a result a profile can be calculated with two equations. One equation is applicable to the central region of an ice cap and the other equation (which was found by Nye) is valid elsewhere. By an appropriate joining of the profiles derived from these two equations, the complete profile of an ice cap can be obtained. From two sample calculations it is shown that, for a large ice cap, Nye's theory is valid practically everywhere, and there is no real need to bring in the modification. For a small ice cap, the modification to the profile is valid over an appreciable fraction of the total width of the ice cap. A very simple extension of the analysis of the ice cap profile allows for the effect of isostatic sinking of the bedrock surface under a large ice cap. (An initially flat bedrock surface was assumed. The analysis can be extended easily to allow for an arbitrarily shaped initial bedrock surface.)
    Type of Medium: Series available for loan
    Pages: iv, 12 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 84
    Language: English
    Note: CONTENTS Preface Summary Introduction Theory Effective sliding velocity Estimate of stresses Surface profilecalculations Effect of the weight of ice on the bedrock base Sample calculations References
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  • 59
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-85,1
    In: Research report / Cold Regions Research and Engineering Laboratory, 85,1
    In: The frost behavior of soils : laboratory and field data for a new concept, Part I
    Description / Table of Contents: Partial summary: Laboratory experiments have been performed with special cabinets in which soil samples, under complete saturation and without surcharges, were subjected to alternate freezing and thawing cycles. Tests included series with both freezing and thawing from the top and with freezing from the bottom and thawing from the top. The soil materials used were well-graded, sandy gravels, the finest one with 14% finer than no. 200 mesh (0. 074 mm).
    Type of Medium: Series available for loan
    Pages: iv, 22 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 85,1
    Language: English
    Note: CONTENTS Preface Summary Introduction to the problem Laboratory data Preliminary experiments Vertical sorting and volume changes produced by cyclic freeze -thaw Volume increase by sorting in straight graded samples without freezing and thawing Field data Vertical sorting of the active layer Correlation between laboratory and field data Conclusion and recommendations References
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  • 60
    Monograph available for loan
    Monograph available for loan
    Nairobi : United Nations Environment Programme
    Call number: MOP 47648 / Mitte
    Type of Medium: Monograph available for loan
    Pages: VIII, 103 Seiten
    Language: English
    Location: MOP - must be ordered
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  • 61
    Call number: MOP 47640 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 584 Seiten , Illustrationen , 30 cm
    Language: French , English
    Location: MOP - must be ordered
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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-202-90
    In: Research report / Cold Regions Research and Engineering Laboratory, 90
    Description / Table of Contents: Summary: A new method is presented for extracting more meaningful information from snow profile data which will simplify the study of the permeability of snow. Earlier analyses normally employed statistical methods to determine property variations with depth, with the line of mean values established by the method of least squares. The mean curves derived in this manner may not represent properly the true nature of the snow pack, or aid in understanding the dynamic processes which are in action. The new graphical methods described distinguish the separate effects of densification and thermal metamorphism on permeability, permitting future advances in the analysis. Profile data obtained in 1954 and 1960 are reanalyzed using the new techniques. For a natural polar pack under conditions when no melting occurs and the accumulation is assumed continuous, the following conclusions may be made: permeability for a given density of snow increases with depth and time except possibly near the surface or at depths below 30 m; the rate of permeability change with depth for given densities decreases in a calculable way relative to the density; and, mean permeability changes with depth in a complex manner.
    Type of Medium: Series available for loan
    Pages: iv, 14, A3, B2, C2 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 90
    Language: English
    Note: CONTENTS Preface Summary Introduction Standard methods of data presentation- A class interval method of data presentation Interpretation of the numerical data Interpretation of thin sections Conclusions References Appendix A Appendix B Appendix C
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  • 63
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-94
    In: Research report / Cold Regions Research and Engineering Laboratory, 94
    Description / Table of Contents: Summary: A new mechanism is described which explains the formation of moraines in the ablation areas of cold ice caps. The mechanism involves the freezing of water onto the bottom surface of an ice cap. This water comes from regions of the bottom surface where the combination of the geothermal heat and the heat produced by sliding of ice over the bed is sufficient to melt ice. A number of criticisms are made of the shear hypothesis, which has been advanced to explain moraines occurring on Baffin Island and near Thule, Greenland. It is concluded that this older hypothesis may be inadequate to account for these moraines. Although in theory the mechanism proposed here undoubtedly would lead to the formation of moraines, the existing field data are insufficient to prove conclusively that actual moraines have originated in this way.
    Type of Medium: Series available for loan
    Pages: iv, 12 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 94
    Language: English
    Note: CONTENTS Preface Summary Introduction Comments on the shear hypothesis Appearance of the debris layers The possibility of cold ice scraping up debris The shear across a debris layer The geometry of the debris layers Freezing model Theory Discussion Conclusion References
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  • 64
    Monograph available for loan
    Monograph available for loan
    Hong Kong : Royal Observatory
    Call number: MOP 47270(1988) / Mitte]
    Type of Medium: Monograph available for loan
    Language: English
    Location: MOP - must be ordered
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  • 65
    Call number: 10.1144/GSL.SP.1964.001.01.31 (e-book)
    In: Special publications / the Geological Society, London, Volume [1]
    Type of Medium: 12
    Pages: 1 Online-Ressource (VIII, 458 Seiten) , Illustrationen , 1 Corrigenda
    Series Statement: The quarterly journal of the Geological Society of London : Supplement 120
    Language: English
    Note: Table of Contents Part 1: Introduction Arthur Holmes Frederick Henry Stewart Geological Society, London, Special Publications, 1, 1-11, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.03 The history of attempts to establish a quantitative time-scale L. R. Wager Geological Society, London, Special Publications, 1, 13-28, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.04 A review of recent Phanerozoic time-scales N. J. Snelling Geological Society, London, Special Publications, 1, 29-36, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.05 Sedimentation rates in relation to the Phanerozoic time-scale J. D. Hudson Geological Society, London, Special Publications, 1, 37-42, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.06 The relationship between radiometric ages obtained from plutonic complexes and stratigraphical time R. St J. Lambert Geological Society, London, Special Publications, 1, 43-54, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.07 The geological significance of radiometric age studies on volcanic and hypabyssal rocks F. J. Fitch and J. A. Miller Geological Society, London, Special Publications, 1, 55-69, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.08 Part 2: Radiometric Methods with Respect to the Time-Scale Uranium–thorium–lead age-determinations with respect to the phanerozoic time-scale A. G. Darnley Geological Society, London, Special Publications, 1, 73-86, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.09 The rubidium–strontium method Stephen Moorbath Geological Society, London, Special Publications, 1, 87-99, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.10 Potassium—argon methods with special reference to basic igneous rocks John Alfred Miller and Frank John Fitch Geological Society, London, Special Publications, 1, 101-117, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.11 Potassium—argon ages of sedimentary and pyroclastic rocks Halfdan Baadsgaard and Martin Henry Dodson Geological Society, London, Special Publications, 1, 119-127, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.12 Potassium—argon decay constants and age tables Alan Gilbert Smith Geological Society, London, Special Publications, 1, 129-141, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.13 Part 3: Original Data Glauconite dates from the Upper Jurassic and Lower Cretaceous Martin Henry Dodson, David Charles Rex, Raymond Casey and Percival Allen Geological Society, London, Special Publications, 1, 145-158, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.14 The age of the paroxysmal Variscan orogeny in England Frank Joseph Fitch and John Alfred Miller Geological Society, London, Special Publications, 1, 159-175, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.15 Part 4: Stratigraphical Review The Tertiary period Brian Michael Funnell Geological Society, London, Special Publications, 1, 179-191, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.16 The Cretaceous period Raymond Casey Geological Society, London, Special Publications, 1, 193-202, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.17 The Jurassic period Michael Kingsley Howarth Geological Society, London, Special Publications, 1, 203-205, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.18 The Triassic period Edward Timothy Tozer Geological Society, London, Special Publications, 1, 207-209, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.19 The Permian period Denys Barker Smith Geological Society, London, Special Publications, 1, 211-220, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.20 The Carboniferous period Edward Howel Francis and Austin William Woodland Geological Society, London, Special Publications, 1, 221-232, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.21 The Devonian period Peter Furneaux Friend and Michael Robert House Geological Society, London, Special Publications, 1, 233-236, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.22 The Silurian period I. Strachan Geological Society, London, Special Publications, 1, 237-240, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.23 The Ordovician period H. B. Whittington and A. Williams Geological Society, London, Special Publications, 1, 241-254, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.24 The Cambrian period J. W. Cowie Geological Society, London, Special Publications, 1, 255-258, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.25 GENERAL DISCUSSION OF PAPAERS IN PART 4S Geological Society, London, Special Publications, 1, 259, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.26 Summary of the Phanerozoic time-scale: the Geological Society Phanerozoic time-scale 1964 Geological Society, London, Special Publications, 1, 260-262, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.27 Part 5: Abstracts of Published Radiometric and Stratigraphical Data with Comments Introduction Geological Society, London, Special Publications, 1, 265-268, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.28 Items Geological Society, London, Special Publications, 1, 269-442, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.29 Erratum Errata Geological Society, London, Special Publications, 1, 443, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.01 Corrigenda Geological Society, London, Special Publications, 1, 444, 1 January 1964, https://doi.org/10.1144/GSL.SP.1964.001.01.30
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  • 66
    Monograph available for loan
    Monograph available for loan
    Berlin ; Heidelberg : Springer
    Associated volumes
    Call number: M 23.95061
    In: Ecological studies
    Type of Medium: Monograph available for loan
    Pages: X, 484 Seiten , Illustrationen
    Edition: Softcover reprint of the original 1st ed. 1985
    ISBN: 978-3-642-70292-1 , 978-3-642-70292-1
    Series Statement: Ecological studies 53
    Language: English
    Note: A. Introduction.- Obituary.- Purpose of this Book.- Synopsis.- B. General Framework of Hypersaline Environments with Special Reference to the Red Sea.- 1. Introduction and Definitions.- 2. The Northern Red Sea, a Historical Sketch.- 3. Gulf of Elat (Aqaba). Geological and Sedimentological Framework.- 4. Coastal Evaporite Systems.- 5. Hypersaline Sea-marginal Flats of the Gulfs of Elat and Suez.- 6. Anchialine Pools — Comparative Hydrobiology.- 7. Botanical Studies on Coastal Salinas and Sabkhas of the Sinai.- C. The Gavish Sabkha — A Case Study.- 8. Introduction.- 9. Geomorphology, Mineralogy and Groundwater Geochemistry as Factors of the Hydrodynamic System of the Gavish Sabkha.- 10. The Ras Muhammad Pool: Implications for the Gavish Sabkha.- 11 Salinity and Water Activity Related Zonation of Microbial Communities and Potential Stromatolites of the Gavish Sabkha.- 12. Structure and Physiology of Square-shaped and Other Halophilic Bacteria from the Gavish Sabkha.- 13. Photoactive Pigments in Halobacteria from the Gavish Sabkha.- 14. Photosynthetic Microorganisms of the Gavish Sabkha.- 15. The Fauna of the Gavish Sabkha and the Solar Lake — a Comparative Study.- 16. Trace Metal Concentrations in Sediments from the Gavish Sabkha.- 17. Biogeochemistry of Gavish Sabkha Sediments I. Studies on Neutral Reducing Sugars and Lipid Moieties by Gas Chromatography-Mass Spectrometry.- 18. Biogeochemistry of Gavish Sabkha Sediments II. Pyrolysis Mass Spectrometry of the Laminated Microbial Mat in the Permanently Water-Covered Zone Before and After the Desert Sheetflood of 1979.- 19. Carbon Isotope Geochemistry and 14C Ages of Microbial Mats from the Gavish Sabkha and the Solar Lake.- D. Applied Aspects and Paleoecology.- 20. Introduction.- 21. A Paleobiological Perspective on Sabkhas.- 22. Applied and Economic Aspects of Sabkha Systems — Genesis of Salt, Ore and Hydrocarbon Deposits, and Biotechnology.- Acknowledgements.- References.- Taxonomic Index.
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  • 67
    Series available for loan
    Series available for loan
    Praha : Nakladatelství Československé Akademie věd
    Call number: O 3037
    Type of Medium: Series available for loan
    Pages: 304 Seiten , Illustrationen, Karten , 9 Karten
    Language: Czech , German , Russian , English
    Note: 1961 , In tschechischer Sprache mit russischen, deutschen und englischen Zusammenfassungen
    Location: Upper compact magazine
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  • 68
    Monograph available for loan
    Monograph available for loan
    Don Mills : Carleton University Press
    Call number: AWI G3-23-95309
    Type of Medium: Monograph available for loan
    Pages: 129 Seiten , Illustrationen, Karten
    Edition: Reprinted 1989
    ISBN: 0886290562 , 0-88629-56-2
    Series Statement: A Carleton contemporary 10
    Language: English
    Note: CONTENTS PREFACE ACKNOWLEDGEMENTS AN INTRODUCTORY NOTE CHAPTER 1 THE CHALLENGE Oil and gas pipelines: early development Pipelines for cold regions Pipelines and the public interest Where does the "North" begin? The freezing of soils Permafrost CHAPTER 2 THE TERRAIN IN COLD REGIONS Patterned ground Solifluction and other soil movements on slopes Ice-wedge polygons, pingoes and palsar Other ice in the ground and thermokarst The climate of the ground CHAPTER 3 A BRIEF HISTORY OF GEOTECHNICAL ACTIVITIES AND ASSOCIATED SCIENTIFIC RESEARCH IN THE NORTH The passive, or pre-technological approach Post-war Northern development and the geotechnical approach up to 1960 Pressure The scientific approach What happens when soils freeze? Conservation and concern for the natural environment CHAPTER 4 THE TRANS-ALASKA PIPELINE The first big pipeline on permafrost Permafrost and earthquakes Terrain conditions and site investigations The pipeline and hydrological conditions Solutions to the problems The completed pipeline CHAPTER 5 THE GAS PIPELINES AND THE FROST HEAVE PROBLEM The Mackenzie Valley pipeline Frost heave and the cold pipeline Origin of the heaving pressure Frost heave and the shut-off pressure Measuring the movement of water through frozen ground A difference of opinion A change of plans CHAPTER 6 THE ALASKA HIGHWAY PIPELINE The approved pipeline Some general problems applying to gas pipelines Creeping soils, rivers, and glacier-dammed lakes The Alaska Highway Pipeline and the frost heave problem Another change of plans CHAPTER 7 MORE PIPELINES, MORE SCIENCE AND MORE POLITICS Russian pipelines The Norman Wells oil pipeline Applied science carried out by a company A pipeline bent in France International science More mega projects CHAPTER 8 FREEZING GROUND, SCIENCE AND SOCIETY Pipelines in cold places: the future A new problem or an old one? A scientific challenge neglected Who is responsible? The unanswered questions Conclusion
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  • 69
    Monograph available for loan
    Monograph available for loan
    Vancouver : University of British Columbia Press
    Call number: AWI G3-23-95320
    Description / Table of Contents: This collection of papers by internationally known scientists in the field of geocryology was originally presented as a series of lectures at the University of British Columbia in 1980-81 in honour of J. Ross MacKay. Together they illustrate the central dilemma in a science where fieldwork must be undertaken in the harsh periglacial environment and where, consequently, it is difficult to test theory rigorously. The papers provide a valuable overview of the current status of international research in a wide area of the field - permafrost, patterned ground, and cold climate phenomena and processes. The treatment varies from anecdotal, historical, and descriptive to mathematical. The studies on soil freezing, ice formation and thaw are relatively sophisticated treatments that are physically sound, theoretically based, and quantitatively precise, as are the computational methods and the extension of results to engineering site evaluations given in other contributions. The regional accounts of geocryological and nival phenomena, on the other hand, remain entirely empirical and, for the most part, qualitative. This critical mismatch of understanding between microscale and regional scale is emphasized in the review of the status of periglacial studies. Ross MacKay's most valuable contribution to science has been his consistent demonstration of how to occupy the middle ground by applying simple physical concepts to explain variations in the landscape.
    Type of Medium: Monograph available for loan
    Pages: XVI, 213 Seiten , Illustrationen, Diagramme, Karten
    ISBN: 0774802049 , 0-7748-0204-9
    Language: English , French , Russian
    Note: CONTENTS List of Figures and Illustrations List of Tables Preface Acknowledgements Notation 1. On the Scientific Method of J. Ross Mackay / W.H. MATHEWS 2. Experimental Observations of Periglacial Processes in the Arctic / ALFRED JAHN 3. Extreme Rainfall and Rapid Snowmelt as Causes of Mass Movements in High Latitude Mountains / ANDERS RAPP 4. Estimation of Avalanche Runout Distances in New Zealand/ B.B. FITZHARRIS 5. The Ice Factor in Frozen Ground / L.W. GOLD 6. Models of Soil Freezing / M.W. SMITH 7. A Step Function Model of Ice Segregation / S.I. OUTCALT 8. Recent Observations on the Deformation of Ice and Ice-Rich Permafrost / N.R. MORGENSTERN 9. Distribution of Recently Active Ice and Soil Wedges in the U.S.S.R. / N.N. ROMANOVSKIJ 10.Periglacial Problems / A.L. WASHBURN Notes on Contributors Author Citation Index Index , Abstracts in englischer, französischer und russischer Sprache
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  • 70
    Call number: AWI G2-18-91721
    Type of Medium: Monograph available for loan
    Pages: 111 S. : , graph. Darst., Kt.
    Language: German , English
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  • 71
    Journal available for loan
    Journal available for loan
    Woods Hole, Mass. : Woods Hole Oceanographic Institution
    Associated volumes
    Call number: AWI P6-89-0371
    In: Oceanus
    Type of Medium: Journal available for loan
    Pages: 112 Seiten , Illustrationen, graphische Darstellungen, Karten
    ISSN: 0029-8182
    Series Statement: Oceanus 31,2
    Language: English
    Note: Contents: A reader's guide to the Antarctic / James H. W. Hain. - Introduction: The callenge of Antarctic Science / David J. Drewry. - The Antarctic Treaty. - The Antarctic Treaty System / Lee A. Kimball. - The Antarctic Mineral Resources Negotiations / R. Tucker Scully. - The Antarctic Legal Regime and the Law of the Sea / Christopher C. Joyner. - Antarctica: Is there any oil and natural gas? / David H. Elliot. - The Southern Ocean and global climate / Arnold L. Gordon. - The Antarctic Ozone Hole / Mario J. Molina. - The Antarctic Circumpolar current / Thomas Whitworth III. - Antarctic Marine Living Resources / Kenneth Sherman, and Alan F. Ryan. - Whales / Douglas G. Chapman. - Seals / Donald B. Siniff. - The BIOMASS Program / Sayed Z. El-Sayed. - Antarctic Logistics / Alfred N. Fowler. - The Soviet Antarctic Program / Lawson W. Brigham. - The growth of Antarctic Tourism / Paul Dudley Hart. - Protecting the Antarctic Environment / Gerald S. Schatz. - Environmental Threats in Antarctica / Paul S. Bogart. - Letters. - Book reviews.
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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-201-86/2
    In: CRREL Report, 86-2
    Description / Table of Contents: The behavior of reinforced and unreinforced concrete beams was studied under impact loading at low temperatures, and the results were compared to the behavior of reinforcing steel (rebar) in Charpy-V impact tests. Transition temperatures as low as -30°C were obtained for the rebars in the Charpy-V tests whereas no brittle failures occured in the rebars in the reinforced concrete beams at the temperature as low as -63°C, even in beams whe're the rebars were Intentionally notched. The impact strength of unreinforced concrete increases considerably at lower temperatures, thus reducing cracking of reinforcedconcrete structures and significantly increasing the safety of lightly reinforced structures.
    Type of Medium: Series available for loan
    Pages: iii, 25 Seiten , Illustrationen
    Series Statement: CRREL Report 86-2
    Language: English
    Note: Abstract Preface Introduction Tests Test specimens Test methods Results Impact strength of beanms Ductility of beams Effect of notched bars Elastic deflection of beams Impact tests on rebars Conclusions and summary Literature cited Appendix A: Beam crack patterns Appendix B: Photomicrographs of failure surfaces of some steels
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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-201-86/5
    In: CRREL Report, 86-5
    Description / Table of Contents: This work presents the results of a study to examine the effects of grain size of internal microfractures in polycrystalline ice. Laboratory-prepared specimens were tested under uniaxial, constant-load creep conditions at -5 C. Grain size ranged from 1.5 to 6.0 mm. This range of grain size, under an initial creep stress of 2.0 MPa, led to a significant change in the character of deformation. The finest-grained material displayed no internal cracking and typically experienced strains of 10 to the minus 2nd power at the minimum creep rate epsilon. The coarse-grained material experienced severe cracking and a drop in the strain at epsilon min to approximately 4x10 to the minus 3rd power. Extensive post-test optical analysis allowed estimation of the size distribution and number of microcracks in the tested material. These data led to the development of a relationship between the average crack size and the average grain size. Additionally, the crack size distribution, when normalized to the grain diameter, was very similar for all specimens tested. The results indicate that the average crack size is approximately one-half the average grain diameter over the stated grain size range. A dislocation pileup model is found to adequately predict the onset of internal cracking. The work employed acoustic emission techniques to monitor the fracturing rate occurred. Other topics covered in this report include creep behavior, crack healing, the effect of stress level on fracture size and the orientation of cracked grains. Theoretical aspects of the grain size effect on material behavior are also given.
    Type of Medium: Series available for loan
    Pages: v, 79 Seiten , Illustrationen
    Series Statement: CRREL Report 86-5
    Language: English
    Note: CONTENTS Abstract Preface Background Present research in perspective Explanations of the grain-size dependency Grain size effects on the ductile to brittle transition Nucleation mechanisms and modeling Characteristic size of nucleated crack Cracking in ice Detection of internal fracturing by acoustic emission techniques Test methods Specimen preparation Creep testing apparatus Crack length and crack density measurements Crack healing measurements Thin section photographs Grain size determination Acquisition of acoustic emission data Presentation of results Specimen characteristics Microcrack measurements Creep behavior Crack healing Slip plane length distribution Acoustic emission observations Grain orientation Analysis and discussion Thick section observations The grain size vs crack size relationship Crack nucleation condition Crack density and specimen strain Creep behavior Normalized crack length Location of cracks Acoustic emission activity Summary and conclusions Suggestions for future work Literature cited Appendix A: Crack length histograms Appendix B: Crystal orientations
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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-201-86/10
    In: CRREL Report, 86-10
    Description / Table of Contents: Icing of a four-bladed rotor was studied under natural conditions at the top of Mt. Washington, N.H. The rotor had two cylindrical blades and two airfoil blades. The results were compared with studies conducted in icing wind tunnels. Considerable differences in icing regimes were observed. For instance, with comparable liquid water content and wind speed the wet-to-dry growth regime transition temperature was up to 10 C higher under natural conditions than in the wind tunnel studies. Results of other studies made under natural conditions were close to those of the present study, indicating that wind tunnel conditions are significantly different from natural conditions. Close examination of the conditions indicated that supersaturation of water vapor existing in most of the wind tunnel studies is the most probable cause of the differences.
    Type of Medium: Series available for loan
    Pages: v, 68 Seiten , Illustrationen
    Series Statement: CRREL Report 86-10
    Language: English
    Note: CONTENTS Abstract Preface Introduction Site weather Site selection Equipment Rotor Data logger Rotoscope Laser profile camera Thin section preparation Run procedure Sample collection and shutdown Dry runs and static runs Results and discussion Wet-to-dry growth regime transition Stagnation line icing rate Icing rate on cylindrical and airfoil blades Liquid water content vs stagnation line icing rate Droplet capture efficiency index Temperature rise Morphological and crystallographic aspects Summary and conclusion Literature cited Appendix A: Chronology of events .. Appendix B: Narrative description of icing runs Appendix C: Weather summary sheets for test days Appendix D: Signal conditioner circuit diagram and sample printout
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  • 75
    Monograph available for loan
    Monograph available for loan
    [London] : Natural Environment Research Council
    Call number: AWI P6-19-92115
    Type of Medium: Monograph available for loan
    Pages: 27 Seiten , Illustrationen
    ISBN: 0-85665-1354 , 0-85665-135-4
    Language: English
    Note: Contents: PART 1: INTRODUCTION AND BACKGROUND. - ANTARCTICA - THE REGION AND ITS GLOBAL IMPORTANCE. - ANTARCTICA - THE SCIENTIFIC OPPORTUNITY AND CHALLENGE. - ANTARCTICA - THE INTERNATIONAL CONTEXT. - ANTARCTICA - ITS SCIENCE AS A NATIONAL RESOURCE. - ANTARCTICA - SOME IMPORTANT BENEFITS FROM RESEARCH. - PART 2: STRATEGY FOR BAS SCIENCE. - INTRODUCTION. - SCIENCE THEMES. - Pattern and Change in the Physical Environment of Antarctica. - Atmospheric Dynamics in the Antarctic. - Ice and Atmosphere Chemistry. - Dynamics of the West Antarctic Ice Sheet. - Evolution of Late Mesozoic and Cenozoic Palaeoenvironments. - Southern Ocean Palaeo-Oceanography and Palaeoclimate. - Geological Evolution of West Antarctica. - West Antarctic Crustal Development and Plate Tectonic Evolution. - Subduction-related Processes. - Dynamics of Antarctic Terrestrial and Freshwater Ecosystems. - Survival Strategies. - Ecosystems and Conservation. - Structure and Dynamics of the Southern Ocean Ecosystem. - Pelagic Ecosystem Studies. - Higher Predators. - Ecological and Physiological Adaptations. - Physics of Solar Terrestrial Phenomena from Antarctica. - Radio Wave Generation and Propagation. - Energy Flow and Dissipation within Geospace. - Humans In Isolated Polar Communities. - Antarctic Geographic Information and Mapping. - LOGISTICS REQUIREMENTS. - TIMEFRAME OF ACTIVITIES. - PART 3: STRATEGY FOR NERC SCIENCE PROGRAMMES OTHER THAN BAS. - INTRODUCTION. - NERC STRATEGY FOR THE ENVIRONMENTAL SCIENCES. - Earth Sciences. - Marine Sciences. - Terrestrial and Freshwater Sciences. - Atmospheric Sciences. - THE ROLE OF THE UNIVERSITIES AND POLYTECHNICS AND THE ANTARCTIC SPECIAL TOPIC. - LOGISTICS. - PRIVATE SECTOR/INDUSTRIAL COLLABORATION. - PART 4: CONCLUSION.
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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-201-87/20
    In: CRREL Report, 87-20
    Description / Table of Contents: The structure and salinity characteristics of saline ice slabs removed from ice sheets grown in an outdoor pool have been studied and related to the complex relative dielectric permittivity measured with free-space transmission techniques at 4.80 and 9.50 GHz. The saline ice closely simulated arctic sea ice in its structural and salinity characteristics, which were regularly monitored in a number of ice sheets grown during the winters of 1983-84 and 1984-85. In-situ transmission measurements at similar frequencies were also made on the ice sheets themselves using antennas located above and beneath the ice. The slab measurements were made during warming from -29° to -2°C on slabs grown during the winter of 1983-84 (4.75 GHz) and during a warming and cooling cycle over a slightly larger temperature range on slabs grown during the winter of 1984-85 (4.80 and 9.50 GHz).
    Type of Medium: Series available for loan
    Pages: v, 41 Seiten , Illustrationen
    Series Statement: CRREL Report 87-20
    Language: English
    Note: CONTENTS Abstract Preface Part I - Structural properties Introduction Experimental setup Analytical techniques Results and discussion 1983-84 experiments 1984-85 experiments Conclusions and recommendations Part Il - Microwave properties Introduction Measurement techniques Results 1983-84 experiments 1984-85 experiments 1984-85 in-situ experiments Discussion Comparison of data Analytical modeling Summary and conclusions Literature cited Appendix A: Dielectric mixing model of sea ice
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  • 77
    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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  • 78
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    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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  • 79
    Monograph available for loan
    Monograph available for loan
    Potsdam : Zentralinstitut für Physik der Erde
    Associated volumes
    Call number: MOP 46498 / Mitte
    In: Veröffentlichungen des Zentralinstituts für Physik der Erde, 102
    Type of Medium: Monograph available for loan
    Pages: 55 Seiten
    Series Statement: Veröffentlichungen des Zentralinstituts für Physik der Erde
    Language: English
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  • 80
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-89/21
    In: CRREL Report, 89-21
    Description / Table of Contents: The physical characteristics of blue ice ablation areas in Antarctica are described and some representative ablation rates are given. The possibilities for using blue-ice areas as airfields are outlined and exploratory surveys are mentioned. Site details are given for icefields at Mount Howe, Mill Glacier, Patriot Hills, Rosser Ridge, Mount Lechner, S1 near Casey station, and on the Ross Ice Shelf near McMurdo station. The surface roughness of blue ice is discussed, microrelief surveys are presented for Mount Howe and Patriot Hills, and spectral analyses are used to develop relations between bump height and wavelength. U.S. military specifications for the roughness limits of various types of runways are summarized and graphical comparisons are made with the roughness analyses for Mount Howe and Patriot Hills. Special machines for smoothing ice runways are discussed and design specifications are developed. Some notes on ground facilities and ground transport are included. Appendices give discussions of weather patterns in the Transantarctic Mountains and methodology for making spectral analyses of surface roughness. It is concluded that glacier-ice airfields for conventional transport aircraft can be developed at low cost in Antarctica. Recommendations for further work are offered.
    Type of Medium: Series available for loan
    Pages: v, 105 Seiten , Illustrationen
    Series Statement: CRREL Report 89-21
    Language: English
    Note: CONTENTS Abstract Preface Introduction Blue-ice areas Blue-ice areas as airfield sites The formation of blue-ice areas Ablation rates at blue-ice areas Exploratory surveys at blue-ice areas Mount Howe Mill Glacier / Plunket Point Patriot Hills Rosser Ridge Mount Lechner The S-1 site near Casey station The McMurdo "Pegasus Site" Surface roughness of blue ice Analysis and characterization of surface roughness Surface preparation to reduce ice roughness Ground facilities Ground transport Conclusions and recommendations Literature cited and selected references Appendix A: Survey data for Patriot Hills, Mount Howe and Mill Glacier Appendix B: Analysis of surface roughness at blue-ice sites Appendix C: Meteorological conditions to be expected in summer in the Trans-antarctic Mountains
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  • 81
    Monograph available for loan
    Monograph available for loan
    Helsinki : Valtion Painatuskeskus
    Call number: MOP 47551/1 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 520 Seiten
    Series Statement: Suomen Akatemian Julkaisuja / The Publications of the Academy of Finland 9/89
    Language: English
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  • 82
    Monograph available for loan
    Monograph available for loan
    Hamburg : Deutscher Wetterdienst - Seewetteramt
    Call number: MOP 47414(B) / Mitte
    Type of Medium: Monograph available for loan
    Pages: 11 Seiten , Illustrationen
    Language: German , English
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  • 83
    Series available for loan
    Series available for loan
    Bratislava : Hydrometeorological Service of Czechoslovakia
    Call number: MOP 47473 / Mitte
    Type of Medium: Series available for loan
    Language: English
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  • 84
    Monograph available for loan
    Monograph available for loan
    Moscow : The Computing Centre of the AS USSR
    Call number: MOP 47102 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 18 Seiten
    Series Statement: The proceedings on Applied Mathematics
    Language: English
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  • 85
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-60
    In: Research report / Cold Regions Research and Engineering Laboratory, 60
    Description / Table of Contents: Summary: This report presents numerical results on the feasibility study of the use of in-ice cooling for a power plant. As a result of this type of arrangement, a water pond under ice is formed. The pond size as a function of time for various operating conditions has been computed. The associated problems such as water temperature, power consumption, etc., are also studied.
    Type of Medium: Series available for loan
    Pages: iv, 17, A6 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 60
    Language: English
    Note: CONTENTS Preface Summary Introduction Open-loop system Method of analysis Time dependence of pond size Temperature of water in the pond Effect of inlet water temperature Effect of convection duct Power consumption for circulation of cooling water Condlusions Closed-loop system Method of analysis Time dependence of pond size Flow conditions of glycol solutions inside coil Discussion and conclusions References Appendix: Examples of calculations
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  • 86
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-61
    In: Research report / Cold Regions Research and Engineering Laboratory, 61
    Description / Table of Contents: Summary: The results of experiments on the bonding of polished and microtomed surfaces of bubble-free ice samples at -5°C with various loads are reported. Only a small part of the available surface area appeared to be bonded, this area increasing with the bonding load. Surfaces apposed immediately after preparation showed an appreciably higher force of separation than those joined after a time interval. The force of separation for surfaces placed together at 0% relative humidity was higher than that at 100% relative humidity. A simplified theory of bonding of irregular ice surfaces is formulated in the appendix. The calculations are based on the assumption of a distribution of small ice cylinders of equal cross sections but different heights located on a non-deformable plate. The cylinders are deformed by a constant force which is applied by another completely non-deformable flat plate. The deformation as a function of force and time and the force of separation as a function of load are derived, assuming that the distribution of heights is given by a box distribution (i.e., frequency of heights is constant).
    Type of Medium: Series available for loan
    Pages: iv, 6, A4 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 61
    Language: English
    Note: CONTENTS Preface Summary Introduction Materials Apparatus and procedure Results Discussion References Appendix: Compression of an assembly of cylinders
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  • 87
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-62
    In: Research report / Cold Regions Research and Engineering Laboratory, 62
    Description / Table of Contents: Summary: Adhesive strength of ice for the systems ice/stainless steel and ice/optically flat fused quartz has been investigated as a function of surface roughness of steel surfaces and rates of shear for steel and quartz. The adhesive strength decreases with decreasing roughness of steel surfaces and the force vs time curves for smooth steel plates resemble those of two solids sliding over each other with a liquid layer sandwiched between them. This is particularly so in the case of quartz. The adhesive strength as a function of rate of shear is linear both for ice/stainless steel and ice/quartz; however, there are indications of yield values. The experimental results are in agreement with the assumption of a liquidlike layer on ice. Ratios of viscosity coefficient to the thickness of the layer have been evaluated for both systems and viscosity coefficients are estimated. The importance of interfacial free energy considerations is pointed out.
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    Pages: iii, 10 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 62
    Language: English
    Note: CONTENTS Preface Summary Introduction Experimental Materials Apparatus Experimental results Ice/metal interface Ice/quartz interface Discussion References
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  • 88
    Monograph available for loan
    Monograph available for loan
    Shinfield Park, Reading : European Centre for Medium-Range Weather Forecasts
    Call number: MOP 47081 / Mitte
    Type of Medium: Monograph available for loan
    Pages: iii, 393 Seiten , Illustrationen
    Language: English
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  • 89
    Monograph available for loan
    Monograph available for loan
    New York : MacMillan
    Call number: MOP 43086 / Mitte
    Type of Medium: Monograph available for loan
    Pages: XIV, 170 Seiten
    Language: English
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  • 90
    Series available for loan
    Series available for loan
    Pasay City, Philippines : Typhoon Committee Secretariat
    Associated volumes
    Call number: MOP 46950(1985) / Mitte
    In: ESCAP/WMO Typhoon Committee annual review, 1985
    Type of Medium: Series available for loan
    Series Statement: ESCAP/WMO Typhoon Committee annual review 1985
    Language: English
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  • 91
    Call number: MOP 47382 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 161 Seiten , 30 cm
    Series Statement: Technical documents in hydrology
    Language: English
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  • 92
    Call number: MOP 47399 / Mitte
    Type of Medium: Monograph available for loan
    Pages: v, 210 Seiten , Illustrationen, Diagramme , 30 cm
    Series Statement: European Space Agency Contract Report
    Language: English
    Note: Investigation of possibilities and requirements of synthetic aperture radar for snow and glacier applications in comparison and in combination with other sensors. Presents results on dielectric properties and on backscattering and emission signatures of snow and ice. Snow and glacier monitoring capabilities of satellite sensors in optical and microwave regions are compared for key applications. Includes appendix by B. Reber on snow structure and texture.
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  • 93
    Call number: MOP 45384/9 / Mitte
    In: WMO TD / World Meteorological Organization, No. 241
    Type of Medium: Series available for loan
    Pages: II, 63 Seiten
    Series Statement: WMO TD / World Meteorological Organization 241
    Language: English
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  • 94
    Monograph available for loan
    Monograph available for loan
    Hong Kong : Royal Observatory
    Call number: MOP 47253(1987) / Mitte
    Type of Medium: Monograph available for loan
    Pages: [2], 73 Seiten , Illustrationen , 30 cm
    Language: English
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  • 95
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-101
    In: Research report / Cold Regions Research and Engineering Laboratory, 101
    Description / Table of Contents: Partial Summary: This paper is a pilot study of interrelations between structural features readily observed in horizontal thin sections of sea ice under low magnification. The core studied was 31.4 cm in length and was collected from Elson Lagoon at Point Barrow, Alaska on 26 October 1960.
    Type of Medium: Series available for loan
    Pages: iv, 11 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 101
    Language: English
    Note: CONTENTS Preface Summary Introduction Petrographic characteristics Intercrystalline features Intracrystalline features References
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  • 96
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-103
    In: Research report / Cold Regions Research and Engineering Laboratory, 103
    Description / Table of Contents: Summary: The effect of air flow on the thermal conductivity of snow was investigated. Steady-state temperature measurements were made along the edge and axis of a cylindrical bed of snow to determine the effective axial thermal conductivity of snow. Unconsolidated snow samples were used, with densities ranging from 0.376 to 0.472 g/cm^3 and corresponding snow particle sizes of 0.065 to 0.219 cm nominal diameter; the mass flow rates employed ranged from approximately 10-40 x 10^-4g/cm^2 sec. Snow density and sample size apparently have opposite effects on the effective thermal conductivity because of the flow of fluid in snow. The test apparatus is described in detail and is illustrated. The results of the experiments are tabulated, and a least square equation is given which represents the results well.
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    Pages: iv, 14, A2 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 103
    Language: English
    Note: CONTENTS Preface Summary Introduction Theory Apparatus and experimental procedure Results and discussion References Appendix A: Sample calculations of a and ke
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  • 97
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-105
    In: Research report / Cold Regions Research and Engineering Laboratory, 105
    Description / Table of Contents: Summary: A principle of particle segregation by freezing is presented. It is demonstrated experimentally by using a transparent freezing cabinet in which a sample of distilled water freezes from the bottom upward. In this way the freezing front line travels vertically and the particles are carried against gravity. By using the same material with different shapes (glass beads and broken quartz or glass) it is demonstrated that an important factor in particle migration is the shape of the particle or its contact area with the interface. By testing other materials with different shapes and sizes, it is demonstrated that another important factor is particle size and rate of freezing. Fine particles migrate under a wide range of rates of freezing; coarser ones migrate at lower and more limited ranges of rates of freezing. It is suggested that, for determining frost behavior of soils in permafrost regions, freezing from the bottom upward is a more reliable test than freezing from the top down. Freezing from the bottom more closely approximates freezing of the active layer above permafrost; also, friction with the cylinder testing wall is eliminated. The implication of this principle in engineering and studies of soil genesis in cold regions is emphasized.
    Type of Medium: Series available for loan
    Pages: iv, 8 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 105
    Language: English
    Note: CONTENTS Preface Summary Introduction Experimental procedure Experimental results Conclusions and recommendations References
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  • 98
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-107
    In: Research report / Cold Regions Research and Engineering Laboratory, 107
    Description / Table of Contents: Summary: The formation of lake ice was studied during the winter of 1956-57 at Post Pond, Lyme, N. H. Tabular, columnar, granular, and crenulate textures of 36 blocks of ice observed are discussed in terms of relative growth velocity and shown in a classification chart. Ice structures are characterized by Forel striations, Tyndall figures, bubbles and strain shadows. Average crystal areas increased with ice thickness, the rate of increase being greater toward lake center, and ceased to enlarge when in a continuous bubble layer. The lake-ice sheet grew both from top and bottom, .downward growth resulting from crystals in a favorable vertical orientation of a-axes and upward growth coming about by water flowing on the original upper ice surface and freezing. Exception to this type of growth was found in the lake area which froze first, where individual crystal areas were larger at the surface and there was no upper surface ice accretion. Fabric diagrams of ice outside the anomolous area show a change of optic axis orientation from a high percentage of c-axes vertical near the surface to a high percentage horizontal at the bottom.
    Type of Medium: Series available for loan
    Pages: iv, 22, A2, B1 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 107
    Language: English
    Note: CONTENTS Preface Summary Description of the lake Cli rna te of the lake Methods of study Ice textures Crystal size Ice structures Crystal fabric studies Growth of an ice sheet References Appendix A: Weather data Appendix B: Sample data
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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-202-108
    In: Research report / Cold Regions Research and Engineering Laboratory, 108
    Description / Table of Contents: Summary: The theory of snow densification is further developed on the basis of an exponential relation between viscosity and density. A linear relation between load-stress and strain rate is not valid for high stresses, and is replaced by a hyperbolic sine function. An empirical function is given for the temperature cycle correction. Two equations are derived for calculating depth-density curves with computers, and a simplified one for use with desk calculators. Instructions are given for determination of function parameters from field data. Four depth-density curves for Greenland and Antarctic locations are computed and graphed to show that the theory is useful.
    Type of Medium: Series available for loan
    Pages: iv, 18, A3, B5 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 108
    Language: English
    Note: CONTENTS Preface Summary Introduction Notation Stress analysis Analysis of densification process Non-Newtonian densification Equation for hyperbolic sine densification law Determination of parameters Discussion Glaciological engineering aspects References Appendix A: Example of calculation Appendix B: Snow density profiles
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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-202-115
    In: Research report / Cold Regions Research and Engineering Laboratory, 115
    Description / Table of Contents: SUMMARY Between 1 July and 7 August 1960, the U.S. Army Snow Ice and Permafrost Research Establishment, Corps of Engineers, supported a £our-man glaciological expedition on the southern dome of the Greenland ice sheet. Measurements of snow temperature, density, ram hardness, and grain size were made at seven pit ~tudies along 191 mileS of over-snow traverse. In addition to the pit studies, 38 Rammsonde profiles were measured and 166 shallow pits were dug to measure temperature in the first meter of snow. The annual accumulation of snow was found to decrease westward, from 97 em water equivalent 50 miles from tP.e east coast, to 40 em 80 miles from the western margin. A possible precipitation shadow was encountered immediately west of the crest line of the ice sheet. The precipitation shadow and the decrease in accumulation westward indicate that the source area for the precipitation lies to the east of the southern dome, in the. Greenland Sea. Temperature profiles in the firn indicated that summer warming was still in progress. During August, melting at an elevation of 2000 m above se~ level was intense (OC in the top 75 em} •. According to the facies classification of glaciers (Benson, 1959, 1960}, most of the study area is in tfie percolation facies, with the possible exception of the westernmost· s.tation (mile l-138) which is at or near the saturation line. The daily heat exchange in the first meter of snow, near the time of maximum melt conditions, is between 20 and '35 cal/cinZ. This is approxi-mately 25o/o of the heat necessary to raise the temperature of a column of firn of unit cross Section and 1 m deep to the melting point. Effective values of thermal conductivity and diffusivity as determined from the temperature curves with no attempt made to isolate radiation and con-vection are, respectively, 4-6 x 10-3 cgs and 20-30 x 10-3 cgs. Radiation and convection in the first meter of firn cause "effective conductivity" values to be 4 to 7 times greater than the value k = 0. 0068pZ given by Abel's (1892), which is the conductivity at greater depths.
    Type of Medium: Series available for loan
    Pages: v, 22, A4, B1 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 115
    Language: English
    Note: CONTENTS Preface Summary Introduction Method of investigation Location Pit studies Temperature Hardness Density Stratigraphic measurements Thermal studies Stratigraphic features Grain size Grain shape Crusts Discussion of results Temperature Altitude gradient Latitude gradient Depth-density relationship Depth-load relationship Densification Stratigraphic analysis Facies relationship Climatological aspects 1960 meteorological observations Temperature Wind Barometric pressure Radiation Cloudiness Visibility Thermal studies Summary and conclusions References Appendix A Appendix B
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