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  • 1
    Monographie ausleihbar
    Monographie ausleihbar
    New York [u.a.] : Wiley
    Signatur: M 94.0290
    Materialart: Monographie ausleihbar
    Seiten: xviii, 571 S.
    ISBN: 0471401579
    Klassifikation:
    Tektonik
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
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  • 2
    Monographie ausleihbar
    Monographie ausleihbar
    Orsay, France : Les editions de physique
    Signatur: M 94.0516
    Materialart: Monographie ausleihbar
    Seiten: VIII, 705 S.
    ISBN: 2902731167
    Klassifikation:
    C.3.8.
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
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  • 3
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Boulder : The Geological Society of America
    Dazugehörige Bände
    Signatur: S 90.0095(158)
    In: Special paper
    Materialart: Schriftenreihen ausleihbar
    Seiten: 82 S.
    ISBN: 081372158X
    Serie: Special paper / Geological Society of America 158
    Sprache: Englisch
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
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  • 4
    Monographie ausleihbar
    Monographie ausleihbar
    Oxford [u.a.] : Pergamon Press
    Signatur: AWI A6-01-0208
    Materialart: Monographie ausleihbar
    Seiten: XVI, 241 S. , graph. Darst.
    Ausgabe: 1. Aufl.
    ISBN: 0080216153
    Serie: Pergamon international library of science, technology, engineering and social studies
    Sprache: Englisch
    Anmerkung: Contents: Preface. - List of Symbols Commonly Used in the Text. - Acknowledgements. - 1 Introduction. - 2 Properties of Sea Water Relevant to Physical Oceanography. - Introduction. - Density. - Measurement of density, temperature and salinity. - Relative density, sigma-t and specific volume. - Tables for density and specific volume as functions of temperature, salinity and pressure. - Sources of data. - 3 The Basic Physical Laws Used in Oceanography and Classifications of Forces and Motions in the Sea. - Basic laws. - Classification of forces and motion. - 4 The Equation of Continuity of Volume. - The concept of continuity of volume. - The derivation of the equation of continuity of volume. - An application of the equation of continuity. - 5 Stability and Double Diffusion. - Static stabiIity. - Criterion for static stability (E). - Numerical values for stability. - Double diffusion. - Dynamic stability. - 6 The Equation of Motion in Oceanography. - The form of the equation of motion. - Obtaining solutions to the equations, including boundary conditions. - The derivation of the terms in the equation of motion. - The pressure term. - Transforming from axes fixed in space to axes fixed in the rotating earth. - Gravitation and gravity. - The Coriolis terms. - Other accelerations. - Coordinate systems. - 7 The Role of the Non-Linear Terms in the Equations of Motion. - The non-linear terms in the equation of motion. - The friction term for the instantaneous velocity. - What is the source of the difficulty?. - Scaling and the Reynolds Number. - Reynolds stresses. - Equations for the mean or average motion. - Reynolds stresses and eddy viscosity. - Scaling the equations of motion. - Dynamic stabiIity. - The effect of density variations on dynamic stability. - Effects of rotation. - 8 Currents Without Friction: Geostrophic Flow. - Hydrostatic equiIibrium. - Inertial flow. - GeopotentiaI. - Geopotential surfaces and isobaric surfaces. - The geostrophic equation. - Why worry about the geostrophic equation?. - The geostrophic method for calculating relative velocities. - An example of the calculation of a geostrophic velocity profile. - An alternative derivation of the geostrophic equation. - The 'thermal wind' equations. - Absolute velocities. - Relations between isobaric and level surfaces. - Relations between isobaric and isopycnal surfaces. - Comments on the geostrophic equation. - Justification for using the geostrophic approach to obtain the speeds of strong currents. - 9 Currents With Friction. - Wind-driven circulations - introduction. - Nansen's qualitative argument. - The equations of motion with friction included. - Ekman's solution to the equations of motion with friction present. - Comments on the above experimental observations. - Transport and upwelling. - Upwelling or downwelling away from boundaries. - Bottom friction and shallow water effects. - Limitations of the Ekman theory. - Sverdrup's solution for the wind-driven circulation. - Orders of magnitude of the terms. - Application of the Sverdrup equation. - The general form of the Sverdrup equation. - The mass transport stream function. - Westward intensification - Stommel's contribution. - The planetary wind field. - Munk's solution. - Comments on Munk's solution. - Vorticity. - Relative vorticity. - Planetary vorticity. - Absolute vorticity. - Potential vorticity. - Westward intensification of ocean currents explained using conservation of potential vorticity. - Equatorial undercurrents. - The boundary layer approach. - The use of the boundary layer approach to obtain a solution to Munk's equation. - A simple inertial theory by Stommel. - 10 Thermohaline Effects. - The deep circulation. - Equations for salt and temperature (heat) conservation. - Equations for the average salinity and temperature. - Reynolds fluxes and eddy diffusivity. - Thermoclines and the thermohaline circulation. - The mixed layer of the ocean. - 11 Numerical Models. - Introduction. - Numerical methods. - General approach to numerical modelling of ocean circulations. - Descriptions of some models of individual oceans. - O'Brien's two-dimensional wind-driven model of the North Pacific. - Cox's model of the Indian Ocean. - Holland and Hirschmann's model of the Atlantic Ocean. - Two models of the circulation of the world ocean. - Models of mesoscale eddies. - Comments on the numerical model solutions. - 12 Waves. - Introduction. - Some general characteristics of waves. - Small amplitude waves. - Orbital motion of the water particles. - Refraction and breaking in shallow water; diffraction. - The generation of waves. - Measurement of waves. - ReaI waves. - Wave generation by the wind; semi-empirical relations. - Energy of waves. - Tsunamis or seismic sea waves. - Internal waves. - Effects of rotation. - Modified gravity waves. - Kelvin waves. - Planetary or Rossby waves. - Topographic effects. - 13 Tides. - Introduction. - Tide-producing forces. - Components of the tide-producing forces. - Ocean responses to the tide-producing forces - tidaI theories. - The practical approach to tide prediction. - The measurement of tides. - Types of tides. - Tidal currents. - Tides in bays-resonance. - Storm surges. - 14 Some Presently Active and Future Work. - APPENDIX I Mathematical Review with Some Elementary Fluid Mechanics. - Introduction. - Scalars and vectors. - Derivatives. - The individual or total derivative. - Integrals. - Fields. - Descriptions of fluid flow. - Convergences and divergences. - Hydrostatic pressure. - Slope effects. - CompressibiIity. - Centripetal and centrifugal forces. - APPENDIX 2 Units Used in Physical Oceanography. - Introduction. - Base units. - Derived and temporary units. - Units used in dynamic oceanography and some numerical values. - SUGGESTIONS FOR FURTHER READING AND FOR REFERENCE. - INDEX.
    Standort: AWI Lesesaal
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  • 5
    Signatur: S 05.0339(41)
    In: Initial reports of the deep sea drilling project
    Materialart: Schriftenreihen ausleihbar
    Seiten: xxvi, 1259 S. : zahlr. graph. Darst. + 1 Kt.
    Sprache: Englisch
    Standort: A 18 - Bitte bestellen
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  • 6
    Monographie ausleihbar
    Monographie ausleihbar
    [Edgecumbe, N.Z.] : A. Muller
    Signatur: M 15.89146
    Beschreibung / Inhaltsverzeichnis: An account of the results of the 2 March 1987 earthquake in the eastern Bay of Plenty and the aftermath's effects on the people and places on the Rangitaiki Plains
    Materialart: Monographie ausleihbar
    Seiten: 223 S., , Ill.
    Sprache: Englisch
    Zweigbibliothek: GFZ Bibliothek
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  • 7
    Monographie ausleihbar
    Monographie ausleihbar
    Amsterdam [u.a.] : Elsevier
    Dazugehörige Bände
    Signatur: M 93.0229
    In: Developments in soil science
    Materialart: Monographie ausleihbar
    Seiten: XIV, 281 S. : graph. Darst.
    Ausgabe: 2. rev. ed.
    ISBN: 0444414355
    Serie: Developments in soil science 5A
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
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  • 8
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-78/26
    In: CRREL Report, 78-26
    Beschreibung / Inhaltsverzeichnis: Ice fog suppression experiments on the Fort Wainwright Power Plant cooling pond were conducted during the winters of 1974-76. Baseline information studies occupied a sizable portion of the available ice fog weather in 1974-75. Then hexadecanol was added to the pond and dramatically improved visibility by reducing fog generated from water vapor released by the pond at -14 C. Although this temperature was not low enough to create ice fog, the cold vapor fog created was equally as devastating to visibility in the vicinity of the pond. During the winter of 1975-76, suppression tests were continued using films of hexadecanol, mixes of hexadecanol and octadecanol, and ethylene glycol monobutyl ether (EGME). Suppression effectiveness at colder temperatures was stuided and limits to the techniques were probed. A reinforcing grid was constructed that prevented breakup of the film by wind and water currents. Lifetime tests indicated that EGME degrades much more slowly than either hexadecanol or the hexadecanol-octadecanol mix. The films were found to be very effective fog reducers at warmer temperatures but still allowed 20% to 40% of normal evaporation to occur. The vapor thus produced was sufficient to create some ice fog at lower temperatures, but this ice fog occurred less frequently and was more quickly dispersed than the thick fog that was present before application of the films.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 27 Seiten , Illustrationen
    Serie: CRREL Report 78-26
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Ice fog from cooling ponds Evaporation Relative humidity and cold air Ice fog suppression Air movement Plastic films Rafts Injection wells Cooling towers Chemical films Reinforced film experiments Meteorological data collection Floating reinforcement grid Application of the hexadecanol film Hexadecanol, octadecanol mixes Ethylene glycol monobutyl ether Laboratory tests of suppression effectiveness Conclusions Literature cited Appendix A. Design for an automatic thin chemical film applicationsystem Appendix B. Meteorological data
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  • 9
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/22
    In: CRREL Report, 78-22
    Beschreibung / Inhaltsverzeichnis: Special environmental factors that influence the design, laying and maintenance of undersea pipelines and cables in polar waters are described. Various approaches to the protection of submarine pipes and cables are considered, and prime emphasis is given to burial techniques for shallow water. A wide range of methods for trenching and burying are discussed, and technical data are given.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 36 Seiten , Illustrationen
    Serie: CRREL Report 78-22
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Conversion factors Introduction Types of pipelines and cables Potential hazards to pipelines and cables Areas of concern Waterdepth Sea ice Icebergs and ice islands Submarine permafrost Ice gouging Seabed erosion by water jets Protection methods Protection of unburied pipes and cables Protection by burial Backhoe digging Wireline equipment Plowing and ripping from the surface Plowing and ripping by self-propelled seabed vehicles Bucket ladder dredges Suction dredging Conventional cutterhead dredges Low pressure water jetting Bottom-traveling cutterhead dredges Explosive methods Novel methods Disc saws, wheel ditchers and milling drums Ladder trenchers and chain saws Repetitive impulse devices High pressure water jets Flame jets and plasma torches Electrical discharge and electromagnetic radiation Chemical methods Conclusions Literature cited
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  • 10
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/20
    In: CRREL Report, 78-20
    Beschreibung / Inhaltsverzeichnis: Abstract: Measurements of the concentrations of Aitken nuclei in maritime air were made near Barrow, Alaska, in June 1975 with a modified Nolan-Pollack small-particle detector. The concentrations varied from 50 to 300 particles cm^-3 depending upon meteorological conditions. The mean Aitken nuclei count was 100 particles cm^-3 for diameters greater than 2 x 10^-3 μm. Transmission electron micrographs of aerosols in maritime air near Barrow were taken. The size range was measured to be 0.01 to 2.5 μm in diameter with the most frequently observed diameter being 0.04 μm. The volume of the maritime air and the collection efficiency of aerosol particles on filmed grids for electron microscopy were measured. The aerosol concentrations were found to be 76 to 101 particles cm^-3 ; the mean concentration was calculated to be 87 particles cm^-3. The aerosol particles in the maritime air were identified by electron microscopy and selected area electron diffraction analysis. About 20% of the aerosol particles were identified, and 80% of the particles were too small for electron diffraction analysis. Sea salt particles constituted 2% of the total, and clay minerals 3%; these particles were considered to be of natural origin. Solid combustion by-products such as coagulated carbon particles and fly ash particles constituted 16%. Despite the comparative remoteness of the sampling site, the measurements indicate that many anthropogenic aerosols were found using an electron microscope.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 48 Seiten , Illustrationen
    Serie: CRREL Report 78-20
    Sprache: Englisch
    Standort: AWI Archiv
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  • 11
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/16
    In: CRREL Report, 78-16
    Beschreibung / Inhaltsverzeichnis: A model investigation of drifting snow conditions was conducted in a hydraulic flume using a sand-water analog. Model results were evaluated to define modeling parameters that would allow quantitative correlation between measured prototype drift conditions and the model. The modeled structure was the standard plan snow fence designed by the Wyoming Highway Department and installed along Interstate Highway 80 in 1971. The performance of this system was documented by the Rocky Mountain Forest and Range Experiment Station of the U.S. Forest Service. Models of the fence were constructed for three heights and two geometric scales. Geometric scaling was based on terrain roughness and boundary layer thickness considerations, while velocity scaling was based on particle fall velocity and threshold of motion characteristics. Simulation of the atmospheric boundary layer was found to be of primary importance. Velocity scaling analysis suggested the use of a 'significant wind' concept based on a combination of velocity magnitude and frequency. Similarity of precipitation rate was not essential, and could be altered within limits to adjust the time scale. The response of the model to the shape of model elements was significant. Although the model is distorted and inexact similarity is achieved, it appears useful on a practical basis.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 26 Seiten , Illustrationen
    Serie: CRREL Report 78-16
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction Background Experimental design Similitude considerations The model Model operation Results Velocity Fence height Porosity Model correlation Summary and conclusions Recommeqdations for future work Literature cited Appendix A
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  • 12
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/7
    In: CRREL Report, 78-7
    Beschreibung / Inhaltsverzeichnis: The theory of non-coaxial in-plane plastic deformation of soils that obey the Coulomb yield criterion is presented. The constitutive equations are derived by use of the geometry of the Mohr circle and the theory of characteristic lines. It is found that, for solving a boundary value problem, the non-coaxial angle must be given such values that enable us to accommodate the presupposed type of flow in the given domain satisfying the given boundary conditions. The non-coaxial angle is contained in the constitutive equations as a parameter. Therefore, the plastic material obeying the Coulomb yield criterion is a singular material whose constitutive equations are not constant with material but are variable with flow conditions.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 28 Seiten , Illustrationen
    Serie: CRREL Report 78-7
    Sprache: Englisch
    Anmerkung: CONTENTS Abstrac Preface Introduction Analysis of stress Geometry of the Mohr circle Stress characteristic directions Analysis of strain rate Constitutive equations Strain-rate characteristic directions Constitutive geometry Strain-rate tensor The dyadic expression Plastic work rate Coordinate transformation Example The stress solution Velocity equations in the a-characteristic curvilinear coordinates The constant speed solution Velocity equations in the constant density region Solution in the first constant-density subregion Solution in the second constant-density subregion Solution in the passive region Conclusion Literature cited
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  • 13
    Signatur: ZSP-201-78/4
    In: CRREL Report, 78-4
    Beschreibung / Inhaltsverzeichnis: The use of radio-echo sounding records to indicate the presence of internal layers within large ice sheets is of interest to glaciologists because it offers a means of tracking the internal properties of the ice sheets over large distances. The interpretation of the reflections obtained in this manner is more valuable, however, if a physical property change relating to the glaciological regime can be related to the dielectric property change producing the radio-echo reflections. In this report, we use the measured physical properties of core to bedrock taken at Cape Folger, East Antarctica (66 deg 22 min s, 111 deg (E), 324-m depth), to compute a profile of dielectric properties and from this, a depth-reflection coefficient profile for comparison with observed radio-echo reflections. The measurements available on physical properties are: density variations, bubble size and shape changes, and crystal fabric variations. The depths of the strong reflections shown on the available radio-echo records are in reasonable agreement with the depths corresponding to the highest reflection coefficients computed from the combined physical property measurements. In calculations to differentiate the separate effects of different physical properties, it appears that density variations account for the primary contributions to the calculated dielectric property changes corresponding to the highest reflection coefficients. However, bubble changes alone can also account for reasonable, though lower, reflection coefficients at the appropriate depths. Crystal fabric variations correspond poorly with the reflection locations. Density variations are normally associated with depositional events in the history of the ice sheet.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 12 Seiten , Illustrationen
    Serie: CRREL Report 78-4
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction Derivation of the power reflection coefficient-depth variation Possible sources of dielectric constant variation with depth in ice sheets Ice density variations Effect of macroscopic impurity layers Effect of microscopic impurtty layers Changes in inclusion geometry Effect of crystal orientation changes Physical properties of the Cape Folger core Density-depth profile Air bubble-geometry depth profile Crystal orientation-depth profile Radio-echo sounding data Results and conclusions Literature cited
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  • 14
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/1
    In: CRREL Report, 78-1
    Beschreibung / Inhaltsverzeichnis: The results of axial double point-load tests on disk samples of snow and ice obtained from the area of McMurdo Sound, Antarctica, are presented. They show the effects of temperature, sample length, load point diameter and specific gravity on failure load. It was determined that 13 samples should be tested to obtain a representative mean strength index. The results show that the axial double point-load test has good possibilities as a rapid field test for determining the unconfined comrpessive strength of snow and ice but that further evaluation of the variables affecting test results must be made.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 11 Seiten , Illustrationen
    Serie: CRREL Report 78-1
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Test procedure Test program Test samples Number of test for determining strength index Effect of temperature Effect of sample length Effect of load point size Tests on snow Discussion Recommendations Literature cited
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  • 15
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Dazugehörige Bände
    Signatur: ZSP-201-76/2
    In: CRREL Report, 76-2
    Beschreibung / Inhaltsverzeichnis: The repair and maintenance costs of low slope roofs are high and their life expectancy is less than desired. The increasing use of insulation is accompanied by a greater incidence of problems. The experience in cold regions amplifies these experiences. Protected membrane roofs have the prerequisites for better performance and the experience to date is encouraging. The results of performance measurements of three roofs built by the Corps of Engineers verify that the membrane remains at nearly constant temperature, independent of the weather, and that the insulation retains its integrity despite periodic wetting. Moisture absorption is slow and appears to stabilize in time due to the self-drying nature of the roof. Heat losses are increased due to rain, and extra insulation should be added to compensate for these losses. The resistance of protected membrane roofs to fire, traffic, impact, and other adverse forces is superior. So far, the initial cost of protected membrane roofs is at a premium, primarily due to the cost of concrete pavers. The initial cost premium can be justified, however, by the reduced repair and maintenance costs as indicated to date, and by the longer life expectancy of the protected membrane. The high probability of superior performance and cost effectiveness is a compelling reason to incorporate protected membrane roofs increasingly in Government construction.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 27 Seiten , Illustrationen
    Serie: CRREL Report 76-2
    Sprache: Englisch
    Anmerkung: CONTENTS Page Abstract Preface Introduction Low slope roof problems and repair costs Protected membrane roofs and materials Installations of protected membrane roofs Performance evaluation Test program Effectiveness Thermal efficiency Heat balance Internal cooling due to rain Moisture absorption and thermal conductivity of insulations Durability and life expectancy Fire resistance Patent considerations Costs of roofs Design considerations Proposed specifications Conclusions and recommendations Literature cited
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  • 16
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/4
    In: CRREL Report, 76-4
    Beschreibung / Inhaltsverzeichnis: Large areas of grounded sea ice have been reported by early arctic explorers and more recently by the U.S. Coast Guard. The ESSA, ERTS, NOAA and DMSP satellites now provide multispectral imagery with sufficiently high resolution to allow detailed sequential observations to be made of the movement and spatial extent of arctic sea ice. This report discusses the location, formation and decay of five large (greater than 30 sq km) islands of grounded sea ice in the southern Chukchi Sea as observed for an extended period of time using satellite imagery. Measurements of the bathymetry around one grounded sea ice feature are presented along with observations made and photos taken from the ice surface. The potential use of these sea ice islands as research stations is also discussed.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 24 Seiten , Illustrationen
    Serie: CRREL Report 76-4
    Sprache: Englisch
    Anmerkung: Contents Introduction The discovery Age of the island Island visit Other islands of grounded ice Discussion Literature cited
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  • 17
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/7
    In: CRREL Report, 76-7
    Beschreibung / Inhaltsverzeichnis: This report covers a series of cantilever beam tests designed to determined the efficacy of adding reinforcement to an ice cover. Tests were run using 1-in.-diam tree branches, 3/16-in.-diam wire rope and 9/16-in. half-round wood dowels as reinforcement for both seawater and freshwater ice. The results show a definite advantage derived from using reinforcement, even when poorly placed. The results also show that reinforced ice carries a load even after it cracks. Thus, after the initial cracks there is time to remove people and equipment before final breakthrough. One must bear in mind, however, that reinforcement has disadvantages. The darker reinforcement absorbs solar radiation and thereby causes earlier weakening of the ice cover. Also, in many cases the time and effort required to place reinforcement may exceed those required to achieve equal strength by additional thickening of the ice sheet. This study has shown that understanding of the failure mechanism of ice under repetitive loading is poor and that future studies should be performed on this problem. Also, this study covered only cantilever beams. The actual field problem is strengthening a three-dimensional sheet. Hence, distribution and orientation of the reinforcement should be addressed in future studies.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 12 Seiten , Illustrationen
    Serie: CRREL Report 76-7
    Sprache: Englisch
    Anmerkung: Contents Abstract Preface Summary Conversion factors: U.S. customary to SI metric units Introduction Typical methods of constructing ice bridges Current knowledge Test program Objectives Equipment Procedure Data General Specific ice sheets Test results Conclusions Recommendations Literature cited
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  • 18
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/10
    In: CRREL Report, 76-10
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 25 Seiten , Illustrationen
    Serie: CRREL Report 76-10
    Sprache: Englisch
    Anmerkung: CONTENTS Introduction Experimental work SCR samples CAG samples CMS samples UAG samples SI samples Optical system Equipment Procedure Photographic work Large cracks and fissures Small damage to the surface Small damage to the buIk Results Damage as a function of the position x of the focal point; n(x) Damage as a function of the number of irradiations #; n(#) Damage as a function of crystallographic orientation ĉ; n (ĉ); p (ĉ) Damage as a function of surface structure Damage as a function of age A; n (A) Damage as a function of wavelength λ; p(λ) Systematic study of damage as a function of W, t, m and s; n(W, t, m, s) Analysis Fracture in ice Mechanisms for optically generated damage in transparent dielectrics Discussion of the results Summary and conclusions Literature cited
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  • 19
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/15
    In: CRREL Report, 76-15
    Beschreibung / Inhaltsverzeichnis: A literature review of revegetation and biological aspects of restoration research was completed for arctic and sub­arctic North America. Although there is a great deal of climatic variation in this region it is generally characterized by extreme conditions, such as a short growing season and permafrost. Most of the revegetation research has been undertaken in the last six years as a result of increased natural resource development. The primary goal has been erosion control, with aesthetics, minimization of thermokarst, and production of browse as other objectives. Revege­tation and long-term restoration methods depend upon such variables as the site conditions, nutrient regime (especially as this is influenced by the climatic conditions in the Arctic and Subarctic), plant adaptations, and the selection of native or introduced species. Technologies which have been developed to meet these conditions primarily include seedbed preparation, use of seed mixes, and fertilization and seeding methods. Most of the research has focused on the use of agronomic grasses and legumes. These are selected on the basis of a number of factors, such as cold hardiness and growth form prior to evaluation in the laboratory and the field. The most successful species to date have been Arctared fescue and Nugget bluegrass in the Arctic, while these two as well as creeping red fescue, meadow foxtail, Frontier reed canarygrass, Durar hard fescue, slender wheatgrass, and Icelandic poa did well in the Subarctic. Similar methods have been attempted to a more limited extent with evaluation of native herbaceous and woody species which seem promising on the basis of natural succession studies. There are a number of continuing research needs for arctic anc subarctic revegetation. These include fertilization strategies, development of specialized techniques (such as sprigging) for native species, and longer term studies. It is particularly important to integrate short term revegetatio methods with long-term restoration goals.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 32 Seiten , Illustrationen
    Serie: CRREL Report 76-15
    Sprache: Englisch
    Anmerkung: CONTENTS Page Abstract Preface Introduction Definition of revegetation Definition of restoration Objectives Some revegetation considerations Site conditions Nutrient regime Plant adaptations Native species vs introduced species Methods Seedbed preparation Seeding methods Timing of seeding Seed mixes Fertilization Agronomic grasses and legumes Selection criteria Laboratory evaluation Field evaluation Effect of revegetation methods Site conditions Maintenance of herbaceous cover Introduced woody species Native species — succession Significance of disturbance Primary succession Secondary succession Herbaceous native species Selection Laboratory evaluation Field evaluation Effect of revegetation methods Woody native species Selection Laboratory evaluation Field evaluation Native species and agronomic species, in combination Recommendations for research Summary Bibliography Appendix: Species tested
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  • 20
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/21
    In: CRREL Report, 76-21
    Beschreibung / Inhaltsverzeichnis: The effects of snow temperature and initial density on the stress vs density and stress vs deformation relationships were investigated for shallow compacted snow in the density range of 0.28 to 0.76 g/cu m, for stress range of 0.5 to 72 bars and a temperature range of -1 to -34 C at a deformation rate of 40 cm/s. A decrease in temperature increases the resistance to stress, the effect increasing with applied stress. For any stress, an increase in the initial density results in an increase in the resulting density, the effect decreasing with an increase in stress. The approximate yield envelopes, which define the stress required to initiate any deformation of snow of a particular density and temperature, were determined. Rapid compaction of snow results in extensive recrystallization, significantly different from that of naturally compacted snow. At a stress of 72 bars, transformation to ice occurs only at temperature above -10C.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 47 Seiten , Illustrationen
    Serie: CRREL Report 76-21
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction Description of study Sample preparation Test equipment and procedure Discussion of results Stress-density relationship Stress-deformation relationship Summary and conclusions Microstructural examination of artifically compacted snow Analytical techniques Results and discussion Conclusions Literature cited Appendix: Photographs of oscilloscope traces
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  • 21
    Monographie ausleihbar
    Monographie ausleihbar
    København : Nyt Nordisk Forl.
    Dazugehörige Bände
    Signatur: ZSP-553-204,1
    In: Meddelelser om Grønland
    Materialart: Monographie ausleihbar
    Seiten: 22 S. + Beil
    ISBN: 8717023785
    Serie: Meddelelser om Grønland 204,1
    Sprache: Englisch
    Standort: AWI Lesesaal
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  • 22
    Monographie ausleihbar
    Monographie ausleihbar
    Amsterdam [u.a.] : Elsevier
    Signatur: M 93.0227 ; M 304
    Materialart: Monographie ausleihbar
    Seiten: X, 323 S.
    ISBN: 0444415661
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
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  • 23
    Monographie ausleihbar
    Monographie ausleihbar
    Leipzig : Dt. Verl. für Grundstoffindustrie
    Signatur: G 5891 2. Ex. ; G 5890 ; M 93.0194
    Materialart: Monographie ausleihbar
    Seiten: 458 S. : graph. Darst. + 2 Kt.
    Ausgabe: 1. Aufl.
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Standort: Kompaktmagazin oben
    Standort: Kompaktmagazin oben
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  • 24
    Monographie ausleihbar
    Monographie ausleihbar
    Budapest : Akad. Kiadó
    Signatur: G 7371 ; 11528 ; M 93.0161
    Materialart: Monographie ausleihbar
    Seiten: 272 S. : graph. Darst.
    ISBN: 9630514427
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Standort: Kompaktmagazin oben
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
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  • 25
    Signatur: 9/MR 90.1102 ; MR 90.1103 ; M 93.0055/1
    In: Developments in precambrian geology
    Materialart: Monographie ausleihbar
    Seiten: VIII, 406 S. : graph. Darst.
    Serie: Developments in precambrian geology 1
    Sprache: Englisch
    Standort: Lesesaal
    Standort: Kompaktmagazin oben
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
    Zweigbibliothek: GFZ Bibliothek
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  • 26
    Monographie ausleihbar
    Monographie ausleihbar
    Dazugehörige Bände
    Signatur: 11/M 93.0253/2
    In: Rock-forming minerals
    Materialart: Monographie ausleihbar
    Seiten: 668 S.
    Ausgabe: 2nd ed.
    ISBN: 0582465222
    Klassifikation:
    Mineralogie
    Sprache: Englisch
    Standort: Lesesaal
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  • 27
    Monographie ausleihbar
    Monographie ausleihbar
    Amsterdam [u.a.] : Elsevier
    Dazugehörige Bände
    Signatur: 11/M 93.0094/5
    In: Handbook of strata-bound and stratiform ore deposits ; part II
    Materialart: Monographie ausleihbar
    Seiten: XI, 319 S.
    ISBN: 0444414053
    Sprache: Englisch
    Standort: Lesesaal
    Zweigbibliothek: GFZ Bibliothek
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  • 28
    Monographie ausleihbar
    Monographie ausleihbar
    Amsterdam [u.a.] : Elsevier
    Dazugehörige Bände
    Signatur: 11/MR 90.0991 ; M 93.0094/4
    In: Handbook of strata-bound and stratiform ore deposits ; part I
    Materialart: Monographie ausleihbar
    Seiten: X, 429 S.
    ISBN: 0444414045
    Sprache: Englisch
    Standort: Lesesaal
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
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  • 29
    Monographie ausleihbar
    Monographie ausleihbar
    Berlin [u.a.] : Springer
    Dazugehörige Bände
    Signatur: 10/M 93.0251A/6
    In: Handbook of geochemistry
    Materialart: Monographie ausleihbar
    Seiten: Losebl.-Ausg.
    Sprache: Englisch
    Standort: Lesesaal
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  • 30
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/27
    In: CRREL Report, 78-27
    Beschreibung / Inhaltsverzeichnis: Uniaxial compression and tension tests were conducted on polycrystalline snow-ice to determine the effect of temperature on its strength. Test temperatures ranged from -O.1C to -54C. Two machine speeds, 0.847 mm/s and84.7 mm/s were used for the constant displacement rate tests. The compressive strength at -54C was about oneorder of magnitude higher than at -0.1C. The tensile strength at -18C was about 20% higher than at 0.1C. The initial tangent and 50% strength moduli are given for the compression tests, while the secant modulus to failure is given for the tension tests.The mode of fracture is discussed and the test results are compared with data from other investigations.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 22 Seiten , Illustrationen
    Serie: CRREL Report 78-27
    Sprache: Englisch
    Standort: AWI Archiv
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  • 31
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/21
    In: CRREL Report, 78-21
    Beschreibung / Inhaltsverzeichnis: This study investigates the possibility of providing estimates of the time of occurrence and length of the freezing season for any location in East and West Germany by using the average Januavy air temperature (AJ AT) as an index. The results indicate that reliable values of the mean freezing index can be obtained from the AJAT relationships which are developed for Germany. This association is further verified using data from the northeastern part of the U.S., and the AJ AT is then used to determine the average starting and ending dates (and hence the probable length) of the freezing season for stations in Germany. The AJ AT and the average dates of snowfall occurrence for numerous locations in the U.S. and Germany are also correlated. Interrelationships between these parameters and the average number of days with snow on the ground for stations up to 3000 m in elevation in Germany are examined. A detailed AJ AT map for East and West Germany, in which data from 134 stations, latitude, altitude and regional influences are considered, is developed in order to make the relationships usable. A historical review of the literature on snow studies in Germany and a brief discussion of snow-cover interpretation by satellite photography are included
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 48 Seiten , Illustrationen , 1 Karte
    Serie: CRREL Report 78-21
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Historical literature review Relationships between midwinter temperature and freezing season Mean freezing index 4 Average January air temperature U.S. comparative study Correlation of AJAT and duration of freezing season Relationships between average January air temperature and snow conditions U.S. relationships German relationships Mapping of average January air temperatures Analysis of observed AJ AT data Development of detailed maps Application and discussion Examples Influence of vegetation Literature cited Appendix A. interpretation of snow cover by satellite Appendix B. Contour, station elevation and Aj AT maps for East and West Germany
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  • 32
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/10
    In: CRREL Report, 78-10
    Beschreibung / Inhaltsverzeichnis: The compressibility of wet snow is described in terms of pressure melting and nonlinear viscous deformation at grain contacts. The results of experiments with different salinities and liquid water contents are compared with computed densities. The decreasing compressibility of wet snow with increasing salinity and decreasing liquid content is quantified and explained. Simultaneous particle growth and the doubly charged layer at phase boundaries are included in the model. The results show that the density of wet snow increases approximately as a power of time but is highly dependent on the stress, initial particle size, liquid water content, and ionic impurity content of the snow.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 23 Seiten , Illustrationen
    Serie: CRREL Report 78-10
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction Experimental procedure Grain growth Stressed particle contacts Fluid pressure Packing geometry Temperature distribution and heat flow Fluid and impurity flows Results The liquid film Conclusions Literature cited
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  • 33
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/17
    In: CRREL Report, 78-17
    Beschreibung / Inhaltsverzeichnis: Abstract: This investigation utilized historical and recent aerial photographs and satellite imagery in 1) estimating changes in positions of the high-water line and sea cliff break and base, in rates of accretion and/or erosion, and in volumes of transported sediment, and 2) providing a preliminary evaluation of the direction of littoral transport along the outer Cape Cod coast. Using aerial photographs acquired in 1938, 1952, 1971 and 1974 with manual photointerpretation techniques, changes in the distances from selected reference points to the cliff break, cliff base and the high-water line were measured. LANDSAT-1 and -2 imagery acquired from 1 September 1972 to 28 May 1975 was evaluated for use in determining the directions of littoral transport that are active the predominant amount of time. Although the imagery has been very useful for this purpose at other locations, it proved to be useless along the outer shore of Cape Cod. Largest net migrations of the high water line from 1938 to 1974 occurred in the northern and southern portions of this coast. The northern maximum high water line was 321.4 ft, the southern was 1794.6 ft. The central portion of the coast was generally more stable with changes varying from 6.8 to 157.6 ft. Cliff-base recession rates varied from 0.4 to 7.3 ft/yr. Maximum estimated net volume of sediment deposited per linear foot of beach from 1938 to 1974 was 334 yd^3 (based on 2 yd^3/ft of recession or accretion); maximum eroded was 914 yd^3. Changes in the configuration of spits were used to evaluate directions of littoral transport since suspended sediment concentrations were generally not sufficient to act as natural tracers of surface currents. Based on the literature and a determination of the portion of the coast perpendicular to the direction of dominant wave approach, the location of the nodal zone for predominant littoral directions of drift probably shifts between the area near Spectacle Pond and North Truro Air Force Station. This investigation has illustrated a photo interpretation technique that is useful in performing a reconnaissance of coastal change. The data obtained from this method can be used to supplement those acquired by ground surveys and are valid as first approximations for planning subsequent, more detailed surveys.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 49 Seiten , Illustrationen
    Serie: CRREL Report 78-17
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric units of measurement Introduction Background Previous investigations Analytical procedures Results and discussion Shoreline changes: High-water line Shoreline changes: Cliff recession Volumetric changes Nodal zone location and direction of littoral transport Error evaluation Summary and conclusions Future research Selected bibliography Appendix A: Maps of shoreline with overlays for 1938, 1952, 1971 and 1974 Appendix B: Supplementary data for estimating shoreline change
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  • 34
    Signatur: ZSP-201-78/9
    In: CRREL Report, 78-9
    Beschreibung / Inhaltsverzeichnis: Large, simply supported beams of temperate lake ice were found, generally, to yield significantly higher flexural strengths than the same beams tested in the cantilever mode. Data support the view that a significant stress concentration may exist at the fixed corners of the cantilever beams. Maximum effects are experienced with beams of cold, brittle ice substantially free of structural imperfections; for this kind of ice the strength difference factor, here attributed to the effect of stress concentrations, may exceed 2.0; that is, simply supported beams test a factor of 2 or more stronger than the same beams tested in the cantilever mode. In ice that has undergone extensive thermal degradation, the stress concentration effect may be eliminated entirely. Simply supported beams generally yield higher strengths when the top surfaces are placed in tension. This behavior is attributed to differences in ice type; the fine-grained, crack-free top layer of snow-ice which constituted up to 50% of the ice cover in the current series of tests usually reacted more strongly in tension than the coarse-grained crack-prone bottom lake ice.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 14 Seiten , Illustrationen
    Serie: CRREL Report 78-9
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Test sites and ice cover properties Beam testing Results Discussion Conclusions Literature cited
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  • 35
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/3
    In: CRREL Report, 78-3
    Beschreibung / Inhaltsverzeichnis: The mathematical theory for the bearing capacity of river ice for vehicles is presented. The floating ice sheet is assumed to have simple supports at the shore line. Solutions are presented for loads uniformly distributed over circular and rectangular areas. Numerical evaluations are made for a number of vehicles and the results presented in graphical form
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 22 Seiten , Illustrationen
    Serie: CRREL Report 78-3
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric (SI) units of measurement Introduction Theory Solution by superposition Solution by Fourier integral Solution by Fourier series Application and results Literature cited Appendix A: Bearing capacity of river ice for military vehicles Appendix B: Vehicle specifications Appendix C: Fortran II computer program
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  • 36
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/8
    In: CRREL Report, 78-8
    Beschreibung / Inhaltsverzeichnis: The interaction of a 5.1-GHz transverse electric surface wave with a dielectric slab is experimentally investigated. The wave is initially supported by a dielectric substrate resting upon a metallic ground-plane. A slab, made of the same dielectric material as the substrate and variable in height, is then placed upon the waveguide. The results for a small slab sitting on the substrate showed that the discontinuity was a very inefficient launcher of reflected surface waves. Investigations of these reflections with a trough waveguide showed that, for values of slab height comparable to the exponential decay height of the surface wave, the reflections remain very small. However, as the slab height is increased beyond the decay height, the reflected amplitude approaches the theoretical value for a plane wave reflected from the interface between air and the same dielectric. The results are applicable to surface wave methods of microwave deicing of wings and helicopter rotors.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 16 Seiten , Illustrationen
    Serie: CRREL Report 78-8
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Summary Introduction Background Objective and procedure Theory of plane surface waves Waveguide design and characteristics Physical apparatus Frequency characteristics Spatial distribution of Ey above the guide Guide wave length Surface wave interaction with a slab discontinuity Experiments with a trough Discussion and conclusions Literature cited
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  • 37
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/5
    In: CRREL Report, 78-5
    Beschreibung / Inhaltsverzeichnis: The viscoelastic deflection of an infinite floating ice plate subjected to a circular load was solved, assuming the Maxwell-Voigt type four-element model. An effective method of numerical integration of the solution integrals was developed, of which each integrand contains a product of Bessel functions extending to infinity. The theoretical curve was fitted to the field data, but the material constants thus found varied with time and location.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 32 Seiten , Illustrationen
    Serie: CRREL Report 78-5
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction The problem The solution Method of numerical integration Ramp/steady loading Curve fitting to time lapse deflections Asymptotic deflection Deflection profiles Acknowledgement Literature cited Appendix I. Analytical background Appendix II. Computer programs, ramp time profiles and steady time profiles
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  • 38
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/6
    In: CRREL Report, 78-6
    Beschreibung / Inhaltsverzeichnis: A new freezing mechanism, called segregation freezing, is proposed to explain the generation of the suction force that draws pore water up to the freezing surface of a growing ice lens. The segregation freezing temperature is derived by applying thermodynamics to a soil mechanics concept that distinguishes the effective pressure from the neutral pressure. The frost-heaving pressure is formulated in the solution of the differential equations of the simultaneous flow of heat and water, of which the segregation freezing temperature is one of the boundary conditions.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 13 Seiten , Illustrationen
    Serie: CRREL Report 78-6
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction Segregation freezing Analysis Heat conduction in the nascent ice layer Water flow in the unfrozen soil Heat transfer in the unfrozen soil Energy balance at the segregation-freezing front Numerical computation Literature cited Appendix A. Essence of Portnov’s method Appendix B. Frost-heaving without air available
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  • 39
    Monographie ausleihbar
    Monographie ausleihbar
    Wageningen : Centre for Agricultural Publ. and Documentation
    Signatur: PIK M 370-91-0161 ; MOP 44707 / Mitte
    Materialart: Monographie ausleihbar
    Seiten: 175 Seiten , Illustrationen
    Ausgabe: 2., revised and extended edition
    ISBN: 9022006522
    Serie: Simulation monographs
    Sprache: Englisch
    Anmerkung: Contents 1 Introduction 1.1 Purpose 1.2 Some terminology 1.3 Electrical analogues 1.4 State determined systems 1.5 Simulation languages 2 Exponential growth 2.1 Analytical and numerical integration 2.2 Simulation 2.3 Time constant and time interval of integration 2.4 Integration method and time interval 3 The growth of yeast 3.1 Description of the system 3.2 Relational diagrams 3.3 Simulation 3.4 Logistic growth 4 Interference of plants 4.1 Replacement series 4.2 Density of sowing 4.3 Simulation of plant interference 4.4 Further modelling aspects 4.4.1 The INDEX and MACRO feature 4.4.2 The INITIAL and DYNAMIC section 5 Growth and competition of Paramecium 5.1 Description of the system 5.2 A simulation program 5.3 Preliminary estimation of parameters 5.4 Final determination of parameters 5.5 Stochastic aspects 5.6 The programming of probability functions 6 Modelling of development, dispersion and diffusion 6.1 Introduction 6.2 Physiological age and development stage 6.3 Demographic models 6.3.1 Age-classes 6.3.2 Errors of approximation 6.3.3 The matrix method 6.4 Germination models 6.4.1 Boxcar train without dispersion 6.4.2 Boxcar train with constant relative dispersion 6.4.3 Boxcar train with controlled dispersion 6.4.4 Refinements 6.5 The flow of heat in soils 7 Growth and development of Helminthosporium maydis 7.1 Introduction 7.2 The weather 7.3 Appearance and growth of lesions 7.4 Sporophore or stalk formation 7.5 Sporulation of green stalks 7.6 Sporulation of dried stalks 7.7 Dispersal of spores 7.8 Germination of spores and penetration of germtubes 7.9 Timing, initialization and output organization 7.10 Results and sensitivity analyses 8 Population models for fruit-tree red spider miteand predatory mites 8.1 Fruit-tree red spider mite 8.2 Predatory mite, Amblyseius potentillae 8.3 Relations between predator and prey 8.4 Preference as a competitive process 8.5 Verification 9 Solutions of the exercises References Appendix A Appendix B Index
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  • 40
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/14
    In: CRREL Report, 76-14
    Beschreibung / Inhaltsverzeichnis: At the height of warm weather in Alaska in 1975, temperature measurements were made to determine the extent of the thermal impact on French Creek due to a condenser cooling water impact from the Eielson AFB Power plant. Water temperature measurements during a two-day period failed to show any significant thermal impact on the water in French Creek. It was concluded that no thermal pollution exists due to this warm water input at the volumes and conditions that presently exist.
    Materialart: Schriftenreihen ausleihbar
    Seiten: ii, 5 Seiten , Illustrationen
    Serie: CRREL Report 76-14
    Sprache: Englisch
    Standort: AWI Archiv
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  • 41
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/22
    In: CRREL Report, 76-22
    Beschreibung / Inhaltsverzeichnis: Several membrane materials used or considered for MESL (membrane-enveloped soil layer) utilization of poor soils in road construction have been tested for cold effect on puncture and stiffness. PE (polyethylene) film was also tested for solvent soak effects. A simple blunt needle apparatus was devised for puncture testing. For plastic films (mainly PE), both puncture resistance and stiffness increase at low temperature (0 F, -18 C). For non-woven, spunbonded fabrics these properties are little affected by cold. For both non-wovens and PE film, puncture and bending strengths increase linearly with weight or thickness. The slope is steeper for the non-wovens, which generally are stronger on a per unit weight basis. PE film soaked in a hydrocarbon solvent swelled approximately 17% and lost about 30-40% its puncture strength. These effects are apparently reversible upon drying. Consideration has been given to sealing and patching requirements and to the drying of sealant liquids when adhering film to film. Also considered have been pos­sible slippage related to the reported low angle of friction of plastic films in soil and the possibility of lamination for improved membrane properties.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 60 Seiten , Illustrationen
    Serie: CRREL Report 76-22
    Sprache: Englisch
    Anmerkung: CONTENTS Page Abstract Preface Introduction Experimental Materials Apparatus Procedure Results Discussion PE solvent soak and swelling PE solvent soak and puncture Film puncture rate effect Bending orientation Comparative tables and graphs Puncture and temperature Bending and temperature Test result vs thickness and weight General considerations Conclusion and recommendations Literature cited Appendix Detailed data tables Denier explanation
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  • 42
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/5
    In: CRREL Report, 76-5
    Beschreibung / Inhaltsverzeichnis: Griffith, and later Babel, have previously developed a tensile fracture criterion for a two-dimensional state of stress. This theory is extended to the compression-compression region. From this theory the angle of fracture is developed. The theory is extended conceptually to three dimensions. Triaxial test data by Haynes for snow-ice are shown in this three-dimensional fracture theory. The test data are slightly less than those predicted when the void in the snow-ice is spherical.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 9 Seiten , Illustrationen
    Serie: CRREL Report 76-5
    Sprache: Englisch
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  • 43
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/11
    In: CRREL Report, 76-11
    Beschreibung / Inhaltsverzeichnis: Water flow through the unsaturated portion of a snowpack is calculated using various assumptions about radiation penetration into the snow. The results show that for the purposes of hydrologic forecasting, it is sufficiently ac­curate to assume that all of the radiation absorption occurs at the surface. The error in the calculation of flow is largest for very shallow snowpacks, but this error is reduced by radiation absorption at the base of the snow and by the routing of meltwater through the saturated basal layer.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 9 Seiten , Illustrationen
    Serie: CRREL Report 76-11
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Summary Conversion factors for U.S. customary and SI units Introduction Theory Examples Discussion Literature cited
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  • 44
    Signatur: ZSP-201-76/18
    In: CRREL Report, 76-18
    Beschreibung / Inhaltsverzeichnis: Three surface elevation and ice thickness profiles obtained during the 1972 Arctic Ice Dynamics Joint Experiment on a multiyear ice floe were analyzed to obtain relationships between surface elevation, thickness and physical properties of the ice. It was found that for ice freeboards from 0.10 m to 1.05 m above sea level a linear relationship between ice density and freeboard could be postulated. The equation for the regression line is: Ice density = -194f' + 974 kg/cu m where f' is the ice freeboard plus snow depth in ice equivalent at the point in question. This statistical relationship is consistent with observed physical properties, which indicate that as the ice freeboard increases, ice salinity decreases and the higher freeboard or thicker ice therefore decreases in density. Using this variable density with freeboard relationship, a model was constructed to predict ice thickness, given ice freeboard and snow depth alone. This prediction is desirable, since snow depth and freeboard are relatively easy to obtain, whereas ice thickness can usually be obtained only by drilling through the ice. The model was compared with two other models. It was found that the variable density prediction model gave the best approximation to observed ice thickness, with a standard error between the measured and predicted value of about 0.4 m, compared with errors from 50 to 100% higher for the other two models.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 25 Seiten , Illustrationen
    Serie: CRREL Report 76-18
    Sprache: Englisch
    Anmerkung: Contents Abstract Preface Summary Introduction Previous work Results Models for predicting thickness from ice freeboard Comparison between measured and predicted thicknesses Spectral behavior of measured and predicted profiles Comparisons of ice thickness using airborne laser profilometry Conclusions Literature cited Appendix A: Misgivings on isostatic imbalance as a mechanism for sea ice cracking
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  • 45
    Schriftenreihen ausleihbar
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    Koebenhavn : Grønlands Geol. Undersøgelse
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    Signatur: ZSP-683-76
    In: Rapport = Report
    Beschreibung / Inhaltsverzeichnis: Airborne gamma-spectrometry and subsequent radiometric field investigations in central East Greenland have revealed a number of areas of above average radioactivity and a number of radioactive anomalies within these areas. These areas can be divided geologically into: pre-Caledonian crystalline basement, late and post-Caledonian plutonic rocks, Tertiary plutons and areas of intensive faulting and shearing. Areas bordering continental sedimentary formations are envisaged as potential host rocks for epigenetic uranium mineralization. The spectrometer system applied, with the detector volume of 3.7 litres, does not completely satisfy a quantitative evaluation of the spectrometric data recorded and a distinction between major rock units is only possible from the gross channel count rates.
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    Seiten: 44 S. : Ill., graph. Darst., Kt.
    Serie: The Geological Survey of Greenland : Report 76
    Sprache: Englisch
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  • 46
    Signatur: M 93.0116
    Materialart: Monographie ausleihbar
    Seiten: IX, 619 S. : Ill.
    ISBN: 0471014885
    Sprache: Englisch
    Standort: Kompaktmagazin oben
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  • 47
    Monographie ausleihbar
    Monographie ausleihbar
    Amsterdam [u.a.] : Elsevier
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    Signatur: 11/M 93.0094/7
    In: Handbook of strata-bound and stratiform ore deposits ; part II
    Materialart: Monographie ausleihbar
    Seiten: xii, 656 S.
    ISBN: 044441407X
    Sprache: Englisch
    Standort: Lesesaal
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  • 48
    facet.materialart.
    Unbekannt
    Milton Keynes : The Open University Press
    Signatur: 93.0258
    Seiten: 80 S.
    Serie: The Open University. Science: A third level course. Earth schience topics and methods , S 333PC
    Sprache: Englisch
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  • 49
    Monographie ausleihbar
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    Berlin [u.a.] : Springer
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    Signatur: 10/M 93.0251A/2
    In: Handbook of geochemistry
    Materialart: Monographie ausleihbar
    Seiten: Losebl.-Ausg.
    Sprache: Englisch
    Standort: Lesesaal
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  • 50
    Monographie ausleihbar
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    Berlin [u.a.] : Springer
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    Signatur: 10/M 93.0251/3
    In: Handbook of geochemistry
    Materialart: Monographie ausleihbar
    Seiten: Losebl.-Ausg.
    Sprache: Englisch
    Standort: Lesesaal
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  • 51
    Monographie ausleihbar
    Monographie ausleihbar
    Berlin [u.a.] : Springer
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    Signatur: 10/M 93.0251/5
    In: Handbook of geochemistry
    Materialart: Monographie ausleihbar
    Seiten: Losebl.-Ausg.
    Sprache: Englisch
    Standort: Lesesaal
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  • 52
    Signatur: M 93.0154/5 ; 11/G 9206
    In: Developments in petrology
    Materialart: Monographie ausleihbar
    Seiten: XI, 272 S.
    ISBN: 0444416587
    Serie: Developments in petrology 5
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Standort: Lesesaal
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  • 53
    Monographie ausleihbar
    Monographie ausleihbar
    Berlin [u.a.] : Springer
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    Signatur: 10/M 93.0251/4
    In: Handbook of geochemistry
    Materialart: Monographie ausleihbar
    Seiten: Losebl.-Ausg.
    Sprache: Englisch
    Standort: Lesesaal
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  • 54
    Signatur: ZSP-201-78/28
    In: CRREL Report, 78-28
    Materialart: Schriftenreihen ausleihbar
    Seiten: x, 112 Seiten , Illustrationen
    Serie: CRREL Report 78-28
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Conversion factors Introduction Descriptions of road test sections Test equipment and procedures Field repetitive plate bearing tests Data analysis General Layered-elastic analysis of the pavement systems Statistical analysis Flexural analysis Summary and conclusions Literature cited Appendix A: Resilient surface deflections for the test points
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  • 55
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    Signatur: ZSP-201-78/24
    In: CRREL Report, 78-24
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 12 Seiten , Illustrationen
    Serie: CRREL Report 78-24
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Comparison of winters Ship effects Measured forces Sequential breaking of the structure Discussion Conclusions Recommendations Literature cited Appendix A. Force level fluctuations in west ice boom, 20 January 1977
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  • 56
    Signatur: ZSP-201-78/23
    In: CRREL Report, 78-23
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 53 Seiten , Illustrationen
    Serie: CRREL Report 78-23
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Conversion factors: Metric (SI) to U.S. customary units of measurement Introduction Selection of experimental approach Previous investigations of effect of freeze-thaw on soil deform ability Selection of laboratory test method Selection of method of field validation tests Field repeated-load plate-bearing tests Test pavements, soils and materials Test procedures and results Resilient modulus of subgrade calculated from field tests Mathematical model Characterization of asphalt concrete Characterization of frozen silt Calculated resilient modulus of silt within the zone of freezing Laboratory repeated-load triaxial tests Specimens, equipment and testing procedures Apparatus Procedures Resilient properties calculated from laboratory tests Calculation methods Asphalt concrete - test results Asphalt concrete - statistical analysis and discussion Silt - test results Silt - statistical analysis Discussion and conclusions Literature cited Appendix A. Repeated-load plate-bearing test results Appendix B. Laboratory repeated-load triaxial test results Appendix C. Regression equation coefficients for resilient modulus and Poisson’s ratio from repeated-load triaxial test data on asphalt concrete and silt Appendix D. Detailed procedures for repeated-load triaxial testing
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  • 57
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/19
    In: CRREL Report, 78-19
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 21 Seiten , Illustrationen
    Serie: CRREL Report 78-19
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Previous work Methods and results Methods of analysis Salinity-chlorophyll a associations Discussion Comparison of ice and water column standing crops Estimated mass of ice associated chl. a Mechanism of ice algae formation in the Weddell Sea Differences between the biological environments of fast and drifting pack ice Conclusions Literature cited Appendix A. Species variations - ice and water column
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  • 58
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/14
    In: CRREL Report, 78-14
    Beschreibung / Inhaltsverzeichnis: The analytical solution and the numerical study of the eigenvalue problem for determining the buckling pressure of an infinite elastic plate floating on water and stressed uniformly along the periphery of an internal hole is presented. The boundary conditions considered are the clamped-, simple-, and free-edge conditions. Small buckling pressure occurs only for the free-edge condition. The shape of the deflection for the free-edge condition suggests that buckling is an important mechanism of failure.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 55 Seiten , Illustrationen
    Serie: CRREL Report 78-14
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Nomenclature Introduction 1. The problem 2. Abstract of the result Part I. Fundamental solutions 3. Fuchsian type solutions 4. Contour integral solution 5. Integration of the integral solution 6. Fundamental solutions for α = 1 7. Fundamental solutions for α = 0 8. Eigenvalues for α = 0 9. Fundamental solutions for α 〉 1 Part II. Asymptotic expansions 10. Asymptotic expansion for 0 〈 α ⩽1 11. Asymptotic expansion for 1 ≦ α ≦ 2 12. Asymptotic expansion for 2 ≦ α ≦ ∞ Part III. Eigenvalues 13. Range of eigenvalues 14. Eigenvalues for the free-edge condition 15. Eigenvalues for the clamped-edge and simple-edge conditions 16. Deflection Acknowledgement Literature cited Appendix A. Analytical continuation at the singular point Appendix B. Tensorial transformations Appendix C. Comparison of the semi-infinite plate buckling with the asymptotic buckling
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  • 59
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/12
    In: CRREL Report, 78-12
    Beschreibung / Inhaltsverzeichnis: Road test sections of membrane-enveloped silt and clay soils overlain with asphalt cement concrete were subjected to repetitive dynamic plate-bearing loadings to determine their strength variations during freeze-thaw cycles. The recoverable surface deformations in the load deflection bowl were continuously measured during the loading cycles and analyzed using the Chevron layered elastic computer program to obtain the in situ resilient deformation modulus of the various section layers at different stages of the freeze-thaw cycles. The resilient stiffness of the pavement system (the total load per unit of resilient load plate deflection) was also calculated for the various freeze-thaw conditions. The modulus values of the asphalt cement concrete varied inversely with its temperature by an order of magnetide (90,000 psi to 1,300,000 psi). The resilient stiffness of the pavement system varied in the same manner by nearly a factor of eight (228.4 kips/in. to 1740.2 kips/in.). Despite the wide strength variations of the sections during freeze-thaw cycles, membrane-enveloped fine-grained soils can be utilized instead of granular materials as base and subbase layers in flexible pavements in cold regions where moisture migration is a major concern. Moisture migration did not occur at saturation levels up to 75%, thus there was no strength loss during thawing.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 24 Seiten , Illustrationen
    Serie: CRREL Report 78-12
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Conversion factors: U.S.customary to metric units of measurement Introduction Freeze-thaw system Construction materials Controlled environment test section Outdoor sections Temperature monitoring instrumentation Repetitive plate bearing test apparatus Test results and analyses Conclusions Literature cited
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  • 60
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/13
    In: CRREL Report, 78-13
    Beschreibung / Inhaltsverzeichnis: Field observations of the growth fabrics of the fast and near-fast ice along the coasts of the Beaufort and Chukchi Seas show that, at depths of more than 60 cm below the upper ice surface, the sea ice crystals show striking alignments within the horizontal plane. At one site this alignment was well developed at a depth of 15 cm and in all cases the degree of preferred orientation increased with depth, with the strongest orientations occurring at the bottom of the ice sheet. In general the c-axes of the crystals were aligned roughly E-W parallel to the coast. In the vicinity of islands the alignment roughly paralleled the outlines of the islands and in narrow passes between islands the alignment paralleled the channel. Our observations, as well as similar observations made in the Kara Sea by Cherepanov, can be explained if it is assumed that the c-axes of the crystals are aligned parallel to the 'long-term' current direction at the sea ice/sea water interface. The alignments are believed to be the result of geometric selection among the growing crystals, with the most favored orientation being that in which the current flows normal to the (0001) plates of ice that make up the dendritic ice/water interface characteristics of sea ice. It is hypothesized that current flow in this direction reduces the thickness of the solute boundary layer as well as the salinity in the liquid at the interface. This lowered salinity allows crystals in the favored orientation to extend farther into the melt than neighboring crystals with less favored orientations. In addition the current tends to induce a continuous flux of supercooled seawater against the sides of the crystals that extend ahead of the interface.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 29 Seiten , Illustrationen
    Serie: CRREL Report 78-13
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Locale and techniques Observations Vertical variations in crystal orientation Regional variations in crystal orientation Summary of observations Causes Initial ice skim Earth’s magnetic field Currents Conclusions and consequences Literature cited
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  • 61
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/2
    In: CRREL Report, 78-2
    Beschreibung / Inhaltsverzeichnis: Many of the technical questions relating to iceberg transport are given brief, but quantitative, consideration. These include iceberg genesis and properties, the mechanical stability of icebergs at sea, towing forces and tug characteristics, drag coefficients, ablation rates, and handling and processing the iceberg at both the pick-up site and at the final destination. In particular the paper attempts to make technical information on glaciological and ice engineering aspects of the problem more readily available to the interested planner or engineer. Specific conclusions include: (1) No unprotected iceberg, no matter how long or wide, would be likely to survive the ablation caused by a long trip to low latitudes. (2) Icebergs that have a horizontal dimension exceeding 2 km may well be prone to breakup by long wavelength swells. (3) To avoid the dangers associated with an iceberg capsizing, the width of a 200-m thick iceberg should always be more than 300 m. (4) For towing efficiency the length/width ratio of a towed iceberg should be appreciably greater than unity. (5) For a pilot project, the selected iceberg would have to be quite small, if for no other reason than the practical availability of tug power.
    Materialart: Schriftenreihen ausleihbar
    Seiten: v, 31 Seiten , Illustrationen
    Serie: CRREL Report 78-2
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Sources and properties of tabular icebergs Sources Characteristics of ice shelves near the ice front Characteristics of tabular icebergs Towing Geophysical and engineering considerations Tug characteristics Handling and processing Cutting and boring with thermal devices Penetration with electrothermal devices Electrothermal cutting Making vertical cuts by pre-split blasting Primary fragmentation by blasting Primary fragmentation by mechanical sawing Comminuting ice with machines Slurry pipelines Conclusion Literature cited
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  • 62
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/1
    In: CRREL Report, 76-1
    Beschreibung / Inhaltsverzeichnis: This report summarizes the advances in understanding of the Arctic which have come about since the inception of the ARPA Arctic Surface Effect Vehicle Program in 1970, primarily as the result of CRREL’s participation. Major efforts to increase knowledge of sea ice, terrestrial, and coastal topographic features are described. Special empha­sis is placed upon the quantitative understanding of pressure ridging. Other areas of major interest are atmospheric characteristics and ecological effects. A list of publications generated is included.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 28 Seiten , Illustrationen
    Serie: CRREL Report 76-1
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Sea ice characteristics Ridging intensity Arctic terrain characteristics databank Digital terrain maps Digital laser profiles Standard terrain tapes Mobility analysis Terrestrial and coastal characteristics Northern Alaska Interior Alaska Arctic USSR Northern Canada and Greenland Climatological characteristics General features Surface winds Temperatures Precipitation and visibility Electromagnetic/optical propagation Ecological effects of SEV operations SK-5 tests Simulated SEV tests Conclusions Literature cited Additional CRREL SEV Bibliography
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  • 63
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/3
    In: CRREL Report, 76-3
    Beschreibung / Inhaltsverzeichnis: A world-wide review of the literature applicable to the design of harbors and channels in cold regions was conducted. Forces due to ice movement present the dominant factor in the design of marine structures in cold regions. Expressions for calculating the ice force are presented. Other factors relating to design criteria such as construction materials, structure geometry, and methods of ice suppression are discussed.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 32 Seiten
    Serie: CRREL Report 76-3
    Sprache: Englisch
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  • 64
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/6
    In: CRREL Report, 76-6
    Beschreibung / Inhaltsverzeichnis: Water flow through the vein structure of temperate ice is described as Darbian flow in which the pressure gradient is determined from vein size and overburden pressure. A solution method for the resulting equation is given and two special cases are considered. For steady flow the equilibrium vein size is a function of depth and, by neglecting the effects of diffusion, it is shown that flow perturbations introduced at the surface propagate downward at a constant speed.These perturbations propagate so slowly that even annual surface fluctuations of flow may be eliminated by diffusion before reaching the bottom of the glacie
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    Seiten: iii, 5 Seiten , Illustrationen
    Serie: CRREL Report 76-6
    Sprache: Englisch
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  • 65
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/9
    In: CRREL Report, 76-9
    Beschreibung / Inhaltsverzeichnis: Access to study areas may be an important factor in long-term field-oriented research, particularly in-regions without well-developed road and communications systems. In a wildland hydrometeorology research project in subarctic Alaska, access to and within a 40-square-mile research watershed has been developed both in accordance with a general plan prepared at project inception and in response to developing research requirements. Foot trails, trails for 'off-road' low-ground-pressure tracked vehicles, helicopter transport, long-term data recorders, and radio telemetry of data have all been incorporated in an access and communications system. Cost estimates indicate that incorporation of gravel roads into the system would be economically advantageous, given adequate funding for initial road construction.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 9 Seiten , Illustrationen
    Serie: CRREL Report 76-9
    Sprache: Englisch
    Anmerkung: Contents Abstract Preface Conversion factors for U.S. customary and SI units Introduction Access within the Caribou-Poker Creeks Research Watershed Trail access Helicopter access Road access Alternative approaches Long-term recorders Telemetry systems Remote sensing Relative costs A desirable system Selected bibliography
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  • 66
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/16
    In: CRREL Report, 76-16
    In: Mechanics of cutting and boring, (DE-B103)20210225152525
    Beschreibung / Inhaltsverzeichnis: This report, which is one of a series on the mechanics of cutting and boring in rock, deals with the kinematics of machines such as rotary drills, augers, tunnel boring machines, corers, and raise borers, in which the rotary cutting unit revolves about an axis that is parallel to the machine's direction of advance. The discussion and analysis cover the geometry and motion of various components of the cutting systems, including such topics as tool trajectories, tool speeds, motions of the more complicated mechanisms, chipping depth, penetration rates, production and clearance of cuttings, tool angles, and spatial distribution of cutters. Worked examples are given to illustrate the application of various equations to practical problems.
    Materialart: Schriftenreihen ausleihbar
    Seiten: ix, 45 Seiten , Illustrationen
    Serie: CRREL Report 76-16
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Summary Foreword Terminology Trajectories of fixed tools Trajectories of roller cutters and indenters Speed of fixed cutting tools Speed of rolling disc cutters Speed and geometry of "wide" roller cutters Skidding rollers "Spiked" rollers Epicyclic or planetary mechanisms Chipping depth and penetration rate Chip production and cutting removal rate Balancing cutting and clearing rates in flight augers Tool relief angles - kinematic considerations Tool rake angles Distribution and spacing of cutting tools Radial tool spacing Angular tool spacing Spacing in the axial direction Literature cited
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  • 67
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/20
    In: CRREL Report, 76-20
    Beschreibung / Inhaltsverzeichnis: Under ordinary conditions the freezing of water begins with supercooling and ice nucleation, and proceeds at 0°C at the ice/water interface until ice formation stops. The presence of solutes, high pressure, or dispersal in fine pores causes the water to freeze at temperatures below 0°C (the so-called freezing point depression). Whenever freezing begins, it pro­ceeds at a constant temperature, or at a temperature which becomes progressively lower. A temperature rise during ice formation is considered here to be an anomaly. Under all equal circumstances, the conditions under which an anomal­ous freezing temperature is observable appear to be very special. This report describes two different experiments dis­playing the anomalous rise of temperature after nucleation and during ice formation. In one case the water was dispersed in the fine pores of fine powders; in the other case pure water was frozen in a transparent insulated cell. Photographic observations were made; relations of ice surface to water volume were measured.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 23 Seiten , Illustrationen
    Serie: CRREL Report 76-20
    Sprache: Englisch
    Anmerkung: CONTENTS Page Abstract Preface Conversion factors for U.S.customary and SI units Introduction Materials, instruments, measurements Experiments with water freezing in fine pores Freezing experiments with bulk water Summary and conclusions Literature cited
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  • 68
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/12
    In: CRREL Report, 76-12
    Beschreibung / Inhaltsverzeichnis: The heat transfer processes associated with melting and refreezing a drill hole 500 m in depth and 0.150 m in initial radius through an ice shelf were approximately analyzed. The results were expressed in graphical form showing the time available for experimentation under the hole as a function of heating duration and heating strength. It was found that the refreezing of the drill hole had a much slower rate than the melting of the hole.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 15 Seiten , Illustrationen
    Serie: CRREL Report 76-12
    Sprache: Englisch
    Anmerkung: Contents Abstract Preface Summary Nomenclature Introduction Analysis Melting period Freezing period Calculation Conclusion Literature cited Appendix A: Justification of using eq 8 for the calculation of heat transfer coefficient h
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  • 69
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/13
    In: CRREL Report, 76-13
    Beschreibung / Inhaltsverzeichnis: The thermal structure and ice conditions of Lake Champlain, a mid-latitude large lake, near Shelburne Point, Vermont, were studied during the winter of 1974-75. The lake was instrumented to a depth of 8.5 m with a string of highly calibrated thermistors, connected to a data logger on shore which recorded water temperatures every four hours. An ice mooring system was developed to anchor the thermistor string so that ice and water temperatures could be obtained at known levels. This temperature recording system measured vertical and horizontal variations in ice and water temperature regimes during ice formation, growth and decay. Meteorological data were measured during the winter period November 1974 through March 1975 at the site. Ice stratigraphy was determined for the ice at the site at its maximum seasonal growth for comparison with ice from St. Albans Bay (at the northern end of Lake Champlain) which had formed earlier. Correlations were determined between ice growth and accumulated degree days of freezing. The operation of a bubbler system installed near the measurement site around a service dock was observed.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vii, 22 Seiten , Illustrationen
    Serie: CRREL Report 76-13
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Summary Introduction Climate Site selection Instrumentation, measurements and calibration Installation of automatic water temperature recording system Visual observations and ice structure St. Albans Shelburne Analysis Temperature comparison Water temperature measuring system Changes in water temperature Wind Degree-days of freezing Prediction of ice formation Bubbler system Conclusions Recommendations Literature cited
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  • 70
    Schriftenreihen ausleihbar
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    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/17
    In: CRREL Report, 76-17
    In: Mechanics of cutting and boring, (DE-B103)20210225152525
    Beschreibung / Inhaltsverzeichnis: This report, which is one of a series on the mechanics of cutting and boring in rock, deals with the kinematics of machines which utilize a continuous belt as the cutting unit (e.g. coal saws, shale saws, digger-chain trenchers). The discussion and analysis cover the geometry and motion of various components of the cutting system, including such topics as chipping depth, production and conveyance of cuttings, tool trajectories, tool speeds, tool angles, and arrangement of cutting tools on the belt. Worked examples are included to illustrate the application of various equations to practical problems
    Materialart: Schriftenreihen ausleihbar
    Seiten: viii, 24 Seiten , Illustrationen
    Serie: CRREL Report 76-17
    Sprache: Englisch
    Anmerkung: Contents Abstract Preface Summary Foreword Introduction Terminology Chipping depth Production and conveyance of cuttings Tool trajectories Tool speeds Tool relief angles — kinematic considerations Tool rake angles Belt curvature, slackness and flexibility Tool layout Longitudinal tool spacing Transverse tool spacing Cross-section profiles of the kerf Literature cited
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  • 71
    Monographie ausleihbar
    Monographie ausleihbar
    København : Nyt Nordisk Forl.
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    Signatur: ZSP-553-198,2
    In: Meddelelser om Grønland
    Materialart: Monographie ausleihbar
    Seiten: 266 S.
    ISBN: 8717021200
    Serie: Meddelelser om Grønland 198,2
    Sprache: Englisch
    Standort: AWI Lesesaal
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  • 72
    Monographie ausleihbar
    Monographie ausleihbar
    Turku : Turun Yliopisto
    Signatur: AWI P5-79-0002
    Materialart: Monographie ausleihbar
    Seiten: 75 S.
    ISBN: 9516415903
    Sprache: Englisch
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  • 73
    Signatur: ZSP-558
    In: Middle atmosphere program
    Materialart: Monographie ausleihbar
    Seiten: 97 S.
    Serie: Middle atmosphere program
    Sprache: Englisch
    Standort: AWI Lesesaal
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  • 74
    Signatur: 12021 ; 10/M 93.0073/1
    In: Developments in geochemistry
    Materialart: Monographie ausleihbar
    Seiten: XVIII, 383 S.
    ISBN: 0444416366
    Serie: Developments in geochemistry 1
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Standort: Lesesaal
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  • 75
    Monographie ausleihbar
    Monographie ausleihbar
    New York [u.a.] : Wiley
    Signatur: M 93.0159 ; AWI A12-95-0120-1 ; AWI A12-95-0120-2 ; MOP 272 / Mitte
    Materialart: Monographie ausleihbar
    Seiten: XIV, 351 S.
    ISBN: 0471035092
    Serie: A Wiley-Interscience publication
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Standort: Kompaktmagazin oben
    Standort: Kompaktmagazin oben
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
    Zweigbibliothek: AWI Bibliothek
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  • 76
    Monographie ausleihbar
    Monographie ausleihbar
    Amsterdam _[u.a.]_ : Elsevier
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    Signatur: 11/M 93.0094/6
    In: Handbook of strata-bound and stratiform ore deposits ; part II
    Materialart: Monographie ausleihbar
    Seiten: XVI, 585 S.
    ISBN: 0444414061
    Sprache: Englisch
    Standort: Lesesaal
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  • 77
    Monographie ausleihbar
    Monographie ausleihbar
    Amsterdam [u.a.] : Elsevier
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    Signatur: 11/MR 90.0990 ; M 93.0094/3
    In: Handbook of strata-bound and stratiform ore deposits ; part I
    Materialart: Monographie ausleihbar
    Seiten: XI, 353 S.
    ISBN: 0444414037
    Sprache: Englisch
    Standort: Lesesaal
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
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  • 78
    Monographie ausleihbar
    Monographie ausleihbar
    Amsterdam [u.a.] : Elsevier
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    Signatur: 11/MR 90.0988 ; M 93.0094/1
    In: Handbook of strata-bound and stratiform ore deposits ; part I
    Materialart: Monographie ausleihbar
    Seiten: X, 338 S.
    ISBN: 0444414010
    Sprache: Englisch
    Standort: Lesesaal
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
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  • 79
    Monographie ausleihbar
    Monographie ausleihbar
    Amsterdam [u.a.] : Elsevier
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    Signatur: 11/MR 90.0989 ; M 93.0094/2
    In: Handbook of strata-bound and stratiform ore deposits ; part I
    Materialart: Monographie ausleihbar
    Seiten: XI, 363 S.
    ISBN: 0444414029
    Sprache: Englisch
    Standort: Lesesaal
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
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  • 80
    Monographie ausleihbar
    Monographie ausleihbar
    Hannover : Bundesanstalt für Geowissenschaften und Rohstoffe
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    Signatur: 9882/II ; M 93.0064/2
    In: The iron ore deposits of Europe and adjacent areas
    Materialart: Monographie ausleihbar
    Seiten: 386 S. : graph. Darst.
    Sprache: Englisch
    Standort: Kompaktmagazin oben
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
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  • 81
    Monographie ausleihbar
    Monographie ausleihbar
    Amsterdam [u.a.] : Elsevier
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    Signatur: 13/M 97.0131
    In: Elsevier oceanography series
    Materialart: Monographie ausleihbar
    Seiten: XIII, 231 S.
    ISBN: 0444414908
    Serie: Elsevier oceanography series 14
    Klassifikation:
    Ozeanographie
    Sprache: Englisch
    Standort: Lesesaal
    Zweigbibliothek: GFZ Bibliothek
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  • 82
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/25
    In: CRREL Report, 78-25
    Beschreibung / Inhaltsverzeichnis: The objectives of this investigation were to describe channel characteristics and geographic settings of ice jam sites from aerial photographic interpretation, to indicate which characteristics may be important in causing ice jams, and to suggest additional uses of aerial photographs. Aerial photographs were taken of 19 sites with a Zeiss RMK 15/23 aerial camera on 17, 19, and 21 April 1976. Uncontrolled photomosaics of each site were assembled and major river characteristics were delineated on the photomosaics. Characteristics described include: manmade structures, falls, rapids, changes in channel depths, channel islands, mid-channel shoals or bars, river bed material, river sinuosity, meanders, floodplain width, riparian vegetation, and types of development on the floodplain. River channel widths were measured from the photographs along rivers where ground truth data were available for comparison. Lengths of channel riffles and pools were measured along the rivers where variations in river depths were evident on the photographs. Seventy-nine percent of the sites have some form of flow control structure which causes a pool with a backwater condition of low velocity. The low flow condition in the pool allows a solid ice cover to form which impedes ice movement and initiates ice jams. Aerial photographs provide a regional perspective for evaluating channel characteristics at an ice jam site and for analyzing the geographic setting at each site during ice-free conditions. Photographs taken after ice jams have formed are useful in monitoring ice jam formation, in analyzing ice characteristics, and in documenting ice jam breakup and movement.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iii, 60 Seiten , Illustrationen
    Serie: CRREL Report 78-25
    Sprache: Englisch
    Standort: AWI Archiv
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  • 83
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/18
    In: CRREL Report, 78-18
    Beschreibung / Inhaltsverzeichnis: The primary objective of this project was to demonstrate the utility of remote sensing techniques as an operational tool in the acquisition of data required by the U.S. Army Corps of Engineers, Seattle District, in the Grays Harbor dredging effects project, and related projects. Aerial imagery was used to map surface circulation and suspended sediment patterns near the hopper dredge pump site at the harbor entrance and near pulpmill outfalls in Aberdeen, and to map the areal distribution and extent of intertidal habitats. The surface circulation maps prepared from the aerial photographs and thermal imagery compared favorably with the large-scale circulation patterns observed in the Grays Harbor hydraulic model at the U.S. Army Engineer Waterways Experiment Station. Of the imagery provided by NASA, the thermal imagery was more useful than the color or color infrared (CIR) photographs for mapping circula­tion, while the CIR photographs were more useful than the thermal imagery or the color photographs for mapping intertidal habitats. Current velocities estimated from dye dispersion patterns and drifting dye drogues were comparable at some locations to velocities measured by in situ current meters and in the hydraulic model. Based on a cursory evaluation of LANDSAT-1 imagery acquired in January, February, and October 1973, it had limited utility in providing data on surface circulation patterns in Grays Harbor. The areal distribution and extent of nine wetland vegetation types, dune vegetation, and three types of eelgrass were mapped using primarily aerial C IR photographs and ground sur­veys. Color photographs were also used for areas not covered by the C IR photographs. Wetland vegetation types mapped were: low silty marsh, low sandy marsh, sedge marsh, high immature marsh, high mature marsh, salt marsh, diked pasture, freshwater marsh, and wooded swamp. Undiked salt marsh (first five types) covered 5540 acres (22.3 km2) in Grays Harbor.
    Materialart: Schriftenreihen ausleihbar
    Seiten: vi, 85 Seiten , Illustrationen
    Serie: CRREL Report 78-18
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction Site description Background and objectives Project history Approach General Aircraft imagery and sensor data LANDSAT imagery Ground truth data Results and discussion Remote sensing techniques Conventional techniques Comparison of results Conclusions Advantages and disadvantages Applications Recommendations Literature cited
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  • 84
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-78/15
    In: CRREL Report, 78-15
    Beschreibung / Inhaltsverzeichnis: This report first discusses the general approach for calculating the horizontal forces an ice cover exerts on a structure. Ice force determination consists of two parts: (1) the analysis of the in-plane forces assuming that the ice cover remains intact and (2) the use of a failure criterion, since an ice force cannot be larger than the force capable of breaking up the ice cover. For an estimate of the largest ice force, an elastic plate analysis and a failure criterion are often sufficient. A review of the literature revealed that, in the majority of the analyses, it is assumed that the failure load is directly related to a 'crushing strength' of the ice cover. However, observations in the field and tests in the laboratory show that in some instances the ice cover fails by buckling. This report reviews the ice force analyses based on the buckling failure mechanism and points out their shortcomings. The report then presents a new method of analysis which is based on the buckling mechanism
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 13 Seiten , Illustrationen
    Serie: CRREL Report 78-15
    Sprache: Englisch
    Anmerkung: CONTENTS Abstract Preface Introduction and statement of problem Review of relevant analyses and tests Determination of the largest ice force on an isolated structure Preliminary remarks The buckling analysis of a floating wedge Proposed method to determine Literature cited
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  • 85
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/8
    In: CRREL Report, 76-8
    Beschreibung / Inhaltsverzeichnis: During the past decade a number of methods for measuring the amount of unfrozen water in partially frozen ground have emerged. Means of quickly and simply predicting unfrozen water contents in clay have become increasingly important with the growth of interest in encapsulating clay soils compacted at low water contents to serve as base courses for roads. Unfortunately the measurements require sophisticated equipment and, in most instances, specially trained operators. In an effort to simplify the task of obtaining water-ice phase composition data, methods of calculating phase composition curves from other, simpler measurements on soils have been sought. The paper presents a method of deriving the measurement of unfrozen water contents at various temperatures from liquid limit determinations.
    Materialart: Schriftenreihen ausleihbar
    Seiten: iv, 9 Seiten , Illustrationen
    Serie: CRREL Report 76-8
    Sprache: Englisch
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  • 86
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Signatur: ZSP-201-76/23
    In: CRREL Report, 76-23
    Beschreibung / Inhaltsverzeichnis: This report describes the study of piles tested in polar snow at Camp Century, Greenland. More than 20 piles of various lengths and sizes were driven, including timber, closed-end and open-end steel pipe piles, and I- and H-piles. The H-piles were instrumented with strain gages. In addition to the driven piles, two purely end-bearing piles were installed in augered holes and five piles were frozen in place using a snow-water slurry. Driving records were obtained and are discussed. Analysis of the driving response of various piles revealed that the Hiley formula, and presumably other similar pile driving formulas, cannot be used to predict the ultimate supporting capacity of piles driven in snow. Factors such as pile inertia, rigidity, size, and tip resistance are discussed in relation to their apparent influence upon pile penetration. Pile load test procedures are described and test results are discussed. It was found that closed-end pipe piles are decidedly inferior to open-end pipe piles in their load-carrying capability and their ultimate supporting capacity. Although pile settlement was found to be dependent upon such variables as pipe load, time, pile shape, and snow temperature, precise effects of these variables were not determined. Nevertheless, the capability of open-end piles to carry quite heavy loads was demonstrated and a procedure is presented for testing these piles in snow.
    Materialart: Schriftenreihen ausleihbar
    Seiten: ix, 132 Seiten , Illustrationen
    Serie: CRREL Report 76-23
    Sprache: Englisch
    Anmerkung: Contents Abstract Preface Introduction Test site Pile driving equipment Test instrumentation Testing procedures Pile driving data Pile type vs driving resistance Closed-end vs open-end piles Calculated bearing capacity of pile Effect of pile driving on the embedment medium Pile inclination Slurried-in-place piles Pile load test data Strain gage instrumentation and results Pile excavation Discussion and conclusions Literature cited Appendix A: Theoretical elastic deflection of piles supported by skin friction Appendix B: Trench floor arching study
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  • 87
    Signatur: AWI S5-82-0002
    Materialart: Monographie ausleihbar
    Seiten: 86a, 2662 S.
    Sprache: Englisch
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  • 88
    Signatur: ZSP-553-197,4
    In: Meddelelser om Grønland
    Materialart: Monographie ausleihbar
    Seiten: 25 S.
    ISBN: 8717022185
    Serie: Meddelelser om Grønland 197,4
    Sprache: Englisch
    Standort: AWI Lesesaal
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  • 89
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Ottawa : Geological Survey of Canada
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    Signatur: SR 90.0009(381)
    In: Memoir
    Materialart: Schriftenreihen ausleihbar
    Seiten: 56 S. + 1 pl.
    Serie: Memoir / Geological Survey of Canada 381
    Sprache: Englisch
    Standort: Kompaktmagazin unten
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  • 90
    Signatur: SR 90.0008(75-10)
    In: Paper
    Materialart: Schriftenreihen ausleihbar
    Seiten: VI, 18 S.
    Serie: Paper / Geological Survey of Canada 75-10
    Sprache: Englisch
    Standort: Kompaktmagazin unten
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  • 91
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Ottawa : Geological Survey of Canada
    Dazugehörige Bände
    Signatur: SR 90.0008(74-49)
    In: Paper
    Materialart: Schriftenreihen ausleihbar
    Seiten: 17 S. + 1 pl.
    Serie: Paper / Geological Survey of Canada 74-49
    Sprache: Englisch
    Standort: Kompaktmagazin unten
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  • 92
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Ottawa : Geological Survey of Canada
    Dazugehörige Bände
    Signatur: SR 90.0008(78-1A)
    In: Current research
    In: Paper
    Materialart: Schriftenreihen ausleihbar
    Seiten: VIII, 558 S.
    ISBN: 0660015064
    Serie: 78-1A
    Sprache: Englisch
    Standort: Kompaktmagazin unten
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  • 93
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Ottawa : Geological Survey of Canada
    Dazugehörige Bände
    Signatur: SR 90.0008(75-19)
    In: Paper
    Materialart: Schriftenreihen ausleihbar
    Seiten: 41 S. + 1 pl.
    Serie: Paper / Geological Survey of Canada 75-19
    Sprache: Englisch
    Standort: Kompaktmagazin unten
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  • 94
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Ottawa : Geological Survey of Canada
    Dazugehörige Bände
    Signatur: SR 90.0008(78-5)
    In: Paper
    Materialart: Schriftenreihen ausleihbar
    Seiten: V, 147 S.
    ISBN: 0660100339
    Serie: Paper / Geological Survey of Canada 78-5
    Sprache: Englisch
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 95
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Ottawa : Geological Survey of Canada
    Dazugehörige Bände
    Signatur: SR 90.0008(78-7)
    In: Paper
    Materialart: Schriftenreihen ausleihbar
    Seiten: 20 S.
    ISBN: 0660102250
    Serie: Paper / Geological Survey of Canada 78-7
    Sprache: Englisch
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 96
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Ottawa : Geological Survey of Canada
    Dazugehörige Bände
    Signatur: SR 90.0008(78-8)
    In: Paper
    Materialart: Schriftenreihen ausleihbar
    Seiten: 27 S.
    ISBN: 0660100622
    Serie: Paper / Geological Survey of Canada 78-8
    Sprache: Englisch
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 97
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Ottawa : Geological Survey of Canada
    Dazugehörige Bände
    Signatur: SR 90.0008(75-14)
    In: Paper
    Materialart: Schriftenreihen ausleihbar
    Seiten: 22 S. + 5 pl.
    Serie: Paper / Geological Survey of Canada 75-14
    Sprache: Englisch
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 98
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Ottawa : Geological Survey of Canada
    Dazugehörige Bände
    Signatur: SR 90.0008(76-6)
    In: Paper
    Materialart: Schriftenreihen ausleihbar
    Seiten: 39 S.
    Serie: Paper / Geological Survey of Canada 76-6
    Sprache: Englisch
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 99
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Ottawa : Geological Survey of Canada
    Dazugehörige Bände
    Signatur: SR 90.0008(76-7)
    In: Paper
    Materialart: Schriftenreihen ausleihbar
    Seiten: 21 S.
    ISBN: 0660008173
    Serie: Paper / Geological Survey of Canada 76-7
    Sprache: Englisch
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 100
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Ottawa : Geological Survey of Canada
    Dazugehörige Bände
    Signatur: SR 90.0008(78-19)
    In: Paper
    Materialart: Schriftenreihen ausleihbar
    Seiten: 59 S.
    ISBN: 0660100614
    Serie: Paper / Geological Survey of Canada 78-19
    Sprache: Englisch
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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