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  • 1
    Series available for loan
    Series available for loan
    Vanadium and other elements in Greenland ice cores (1976)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-76/24
    In: CRREL Report, 76-24
    Description / Table of Contents: Chemical analysis of surface snows and deeper ice core samples from Milcent, Greenland, indicates a marine origin for Na and Cl and a terrestrial origin for Al, Mn and V. Pre-1900 enrichment factors, based on average crustal composition, are high for Zn and Hg and appear to be related to their volatility. A comparison of pre-1900 and 1971-1973 concentrations of V and Hg shows no decided increase from industrial production; however, the abundance of Zn (relative to Al) increased three-fold during this time period. The chemical composition of ancient ice is extremely useful in interpreting modern aerosols.
    Type of Medium: Series available for loan
    Pages: ii, 6 Seiten , Illustrationen
    Series Statement: CRREL Report 76-24
    URL: https://hdl.handle.net/11681/9540
    Language: English
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  • 2
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    Landsat-assisted environmental mapping in the Arctic National Wildlife Refuge, Alaska (1982)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-82/37
    In: CRREL Report, 82-37
    Description / Table of Contents: This report presents a Landsat-derived land cover map of the northwest portion of the Arctic National Wildlife Refuge, Alaska. The report is divided into two parts. The first is devoted to the land cover map with detailed descriptions of the mapping methods and legend. The second part is a description of the study area. The classification system used for the maps is an improvement over existing methods of describing tundra vegetation. It is a comprehensive method of nomenclature that consistently applies the same criteria for all vegetation units. It is applicable for large- and small-scale mapping and is suitable for describing vegetation complexes, which are common in the patterned-ground terrain of the Alaskan Arctic. The system is applicable to Landsat-derived land cover classifications. The description of the study area focuses on five primary terrain types: flat thaw-lake plains, hilly coastal plains, foothills, mountainous terrain, and river flood plains. Topography, landforms, soils and vegetation are described for each terrain type. The report also contains area summaries for the Landsat-derived map categories. The area summaries are generated for the five terrain types and for the 89 townships within the study areas. Two land cover maps at 1:250,000 are included.
    Type of Medium: Series available for loan
    Pages: 68 Seiten , Illustrationen, 2 Karten
    Series Statement: CRREL Report 82-37
    URL: https://cdm16021.contentdm.oclc.org/digital/collection/p266001coll1/id/7051
    URL: https://hdl.handle.net/11681/9332
    Language: English
    Note: CONTENTS Abstract Preface Foreword Introduction A land cover map of the ANWR study area Legend development Mapping method Results Discussion Description of the ANWR study area General description Description of specific terrain types Conclusions Literature cited Appendix A: Descriptions of Landsat land cover categories for ANWR Appendix B: Area summaries Appendix C: Aproximate equivalent units in several systems of land cover, wetland and vegetation classifications used in northern Alaska Appendix D: Soil taxonomy Appendix E: Summary of principal Landsat land cover categories within the terrain types of the ANWR study area
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  • 3
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    Series available for loan
    Climatological means and extremes on the Greenland ice sheet (1961)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-202-78
    In: Research report / Cold Regions Research and Engineering Laboratory, 78
    Description / Table of Contents: Summary: This climatological study makes use of the temperature, wind, and precipitation records from 12 stations on the Greenland Ice Sheet. Many of these stations were not in operation for concurrent periods and records for a year or more were available from only a few of them. The mean, mean maximum, mean minimum, absolute maximum, and absolute minimum temperatures were computed from the records. The highest absolute maximum temperature reported was 44°F at Mint Julep in southwestern Greenland. The lowest absolute minimum was -94°F at Northice in northern Greenland. This study shows that the prevailing wind usually was from the direction of the high central area of the ice sheet. Stations on the west slope had prevailing winds with an easterly component whereas stations on the east slope had prevailing winds with a westerly component. The wind speed varied from 0 to approximately 60 kt, but was predominantly in the 0 to 20 kt range. At some of the stations on the ice sheet, precipitation was measured in precipitation gages, at others it was measured as surface accumulation. At many locations the annual accumulation was determined from stratigraphic studies of the snow profile. The number of days on which snow occurred, expressed as percent of total days of observation, was used as an index to the amount of snowfall. The mean annual accumulation shows precipitation to be heavier on the west slope of the ice sheet than in other areas. The precipitation records at Northice indicate that the annual precipitation in that part of northern Greenland may be very light. The means for the various climatological parameters covered in this study are presented in tables and on a climatological map which presents a cartographic picture of the overall climatology of the Greenland Ice Sheet.
    Type of Medium: Series available for loan
    Pages: iv, 13, A5, B4 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 78
    URL: https://hdl.handle.net/11681/5885
    Language: English
    Note: CONTENTS Preface Summary Introduction Air temperature Wind direction and speed Precipitation and accumulation Climatological map for the Greenland Ice Sheet Appendix A: Temperature data Appendix B: Precipitation data
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  • 4
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    Series available for loan
    Flexural strength of ice on temperate lakes : comparative tests of large cantilever and simply supported beams (1978)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-78/9
    In: CRREL Report, 78-9
    Description / Table of Contents: 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.
    Type of Medium: Series available for loan
    Pages: iv, 14 Seiten , Illustrationen
    Series Statement: CRREL Report 78-9
    URL: https://hdl.handle.net/11681/9406
    Language: English
    Note: CONTENTS Abstract Preface Introduction Test sites and ice cover properties Beam testing Results Discussion Conclusions Literature cited
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  • 5
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    Series available for loan
    Excavations and installations at SIPRE test site, site 2, Greenland (1955)
    Wilmette, Ill. : Snow, Ice and Permafrost Research Establishment
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    Call number: ZSP-201-20
    In: SIPRE report, 20
    Description / Table of Contents: Work carried out at the SIPRE Test Site, Site 2, on the Greenland Ice Cap,during the summer 1954, included: (1) Excavation of trenches, a circular tunnel and a deep pit; (2) Instrumentation of excavations for pressure and deformation measurements; (3) Tests on the properties of snow from the deep pit; (4) Construction of a snow house as an experimental structure and to provide a heated shelter for an observer stationed at the site for the winter. Observations and measurements over a period of five years are expected to provide sufficient information for the establishment of satisfactory design criteria for all kinds of surface and subsurface military installations on high polar ice caps.
    Type of Medium: Series available for loan
    Pages: 31 Seiten , Illustrationen
    Series Statement: SIPRE report 20
    URL: https://catalog.hathitrust.org/Record/101740913
    Language: English
    Note: Contents I. Introduction, by H. Bader II. Excavation of trenches and tunnels, by R.W. Waterhouse III. Excavation of deep pit, by J.K. Landauer IV. Trench covering, framing, and instrumentation, by R.W. Waterhouse V. The snow house, by R.W. Waterhouse VI. Load measurements in the N-S trench, by R.W. Waterhouse VII. Deformation measurements, by J.K. Landauer VIII. Distance changes on the ice cap, by B.L. Hansen and H. Bader IX. Annual accumulation, by H. Bader X. Snow density and snow load in deep pit, by J.K. Landauer XI. Air permeability of snow from deep pit, by J.A. Bender XII. Viscosity of snow from deep pit, by J.K. Landauer XIII. Crushing strength of snow from deep pit, by T.R. Butkovich XIV. Shear strength of snow from deep pit, by T.R. Butkovich XV. Tensiel strength of snow from deep pit, by T.R. Butkovich XVI. Angle of internal friction of snow from deep pit, by T.R. Butkovich XVII. Snow temperatures, by J.K. Landauer
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  • 6
    Monograph available for loan
    Monograph available for loan
    The Ziegler Polar Expedition 1903 - 1905 : scientific results (1907)
    Washington, DC : Ziegler
    Details Availability
    Call number: AWI E2-11-0018 ; AWI PY-1955-13
    Type of Medium: Monograph available for loan
    Pages: VII, 630 S. : Ill., Kt. , 2 Kt.
    URL: Online Edition
    Language: English
    Note: Kt. u.d.T.: Part of Franz Josef Archipelago surveyed by the Ziegler Polar Expedition 1903-4-5 〈1 : 600.000〉 ; Map of Franz Josef Archipelago compiled from surveys of the Ziegler Polar Expeditions 1901--02, 1903-5, and from information published by Payer (1872-74), Leigh Smith (1880-81), Jackson (1894-97), Nansen (1895-96), Wellman (1898-99), the Duke of the Abruzzi (1899-1900) 〈1 : 750.000〉 , Contents: Introduction by Anthony Fiala. - Section A - Magnetic Observations and Reductions. - Section B - Notes and Sketches of the Auroræ Borealis. - Section C - Meteorological Observations and Compilations. - Section D - Tidal Observations and Reductions. - Section E - Astronomic Observations and Reductions. - Section F - Map construction and survey work
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  • 7
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    Series available for loan
    Antarctic research : proceedings of a symposium, held at Potsdam GDR, 11-14 September 1989; Vol. 1: Earth and atmospheric sciences (1990)
    Berlin : Nationalkomitee für Geodäsie und Geophysik bei der Akademie der Wissenschaften der DDR
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    Call number: Q 2434(15) ; MOP Per 581(1/15) ; ZSP-319/A-15
    In: Geodätische und Geophysikalische Veröffentlichungen : Reihe 1, Heft 15
    In: Antarctic research / edited by H.-J. Paech, D. Fritzsche, Vol. 1
    Type of Medium: Series available for loan
    Pages: 280 Seiten , Illustrationen
    ISSN: 0533-7577
    Series Statement: Geodätische und Geophysikalische Veröffentlichungen : Reihe 1 15
    Language: English
    Note: Contents: Volume I Earth Sciences. - Geological research of the German Democratic Republic in Antarcitca - a review / J. Hofrnann ; H.-J. Paech ; D. Fritzsche. - Structural evolution of the Ross Sea depression and the adjacent Transantarctic Mountains (Abstract) / F. Tessensohn. - Evolutionary types of sedimentary basins of the continental margin, Antarctica (Abstract) / V. V. Traube. - Age determination on detrital zircons of West Antarctica - A contribution to the reconstruction of Gondwana / W. P. Loske ; H. Miller. - Geological relations between Queen Maud Land, East Antarctica and South India / W. Stackebrandt. - The Proterozoic evolution of New Schwabenland and its correlation with the southern part of Africa (Abstract) / K. Weber ; N. Arndt ; J. Jacobs ; M. Peters. - Stratigraphy, metamorphism and nappe-tectonics in the Shackleton Range (Antarctica) / W. Buggisch ; G. Kleinschmid t; H. Kreuzer ; S. Krumm. - Comments on 'Stratigraphy, metamorphics and nappetectonics in the Shackleton Range (Antarctica)' by Buggisch, W. et al. / H.-J. Paech. - The Lambert Rift development in East Antarctica - a review (Abstract) / J. Hofmann. - Sedimentological investigations in Permian deposits of the Beaver Lake area (Prince Charles Mts., East Antarctica) - First results / M. Mann. - Contributions to the geology of the south eastern Antarctic Peninsula (Abstract) / K.-P. Stanek ; W. Weber ; K. Rank ; K. Hahne. - Geological history of western Queen Maud Land / H.-J. Paech ; A. A. Laiba ; O. G. Shulyatin. - Late Proterozoic microbiota from the Turnpike Bluff Group, Shackleton Range (Abstract) / B. Weber. - Proterozoic fossil content in the Ahlmarmryggen Group, western Queen Maud Land: first preliminary results / B. Weber ; H.-J. Paech. - Geological evolution of the Schirmacher Oasis inclusively surrounding nunataks and the Central Wohlthat Massif (Abstract) / H. Kämpf et al. - Geological setting of the nunataks area south of the Schirmacher Oasis, Central Queen Maud Land / H.-U.Wetzel ; W. Stackebrandt ; K. Hahne. - Mineralizations in Central Queen Maud Land (Abstract) / H. Kämpf et al. - The petrographic characteristics of metamorphics in Queen Maud Land / G. Andrehs ; K. Adam. - Geochemical studies of tillites and boulders in Central Queen Maud Land (Abstract) / K. Hahne et al. - Oxygen isotope geochemistry of pegmatites from a high-grade metamorphic terrain (Schirmacher Oasis, East Antarctica): Preliminary results / Yu. A. Borshchevskiy et al. - Geodetical activities in the vicinity of the Georg Forster Station - Continuation of geodetic research tradition of the GDR in Antarctica / R. Dietrich ; R. Frey ; W. Korth. - Polar lights above the GDR Antarctic station "Georg Forster" (Abstract) / A. Grafe ; C. Kopsch. - Geomagnetical survey of the Schirmacher Oasis and its surroundings / St. Wagner ; C. Kopsch. - Effective offline-processing of complex geomagnetic and ionospheric data / St. Wagner ; V. Strecke. - A new measuring system for registration of geophysical signals on "Georg Forster" based on a 16-bit-multiprocessor structure (Abstract) / R.Rochlitzer Geomagnetic measuring techniques in Antarctica, both in field and stationary operation / C.Kopsch. - Atmospheric Sciences. - Antarctic research on the atmosphere and solar-terrestrial physics / M. J. Rycroft. - The polar ozone depletion in spring as a response to lower stratospheric changes in dynamics and chemistry / H. Gernandt ; P. Gloede. - Ground based aerosol optical thickness measurements in Antarctica from 1984/85 to 1988/89 / U. Leiterer ; A. Herber. - Some problems of the Atmospheric circulation over Antarctica / V. I. Zachariev. - Some results of middle atmosphere research Antarctica, Molodoshnaya station (Abstract) / I. N. Ivanova ; G. A. Kokin ; E. V. Lysenko et al.
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  • 8
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    Analysis of a diffusion wave flow routing model with application to flow in tailwaters (1983)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-83/7
    In: CRREL Report, 83-7
    Description / Table of Contents: Peak power generation with hydropower creates tailwater flow conditions characterized by high and low flows with abrupt transitions between these states. Flows occurring in tailwaters typically form sharp-fronted, large-amplitude waves of relatively short period. An understanding of the mechanics of downstream propagation of these waves is important both for direct application in studies of the tailwater and because of the similarity of these waves to those following a dam break. An analysis of the dynamic equations of open channel flow is used to quantify the relative importance of flow wave convection, diffusion and dispersion in rivers. The relative importance of each process is re­lated to the relative magnitude of terms in the dynamic equations, providing a physical basis for model formulation. A one-dimensional diffusion wave flow routing model, modified for tailwaters, simulates the important physical pro­cesses affecting the flow and is straightforward to apply. The model is based upon a numerical solution of the kine­matic wave equation. The “modified equation,” Hirt, and von Neumann analyses are used to gain insight into the stability and dissipative and dispersive behavior of the numerical solution, and results of these analyses are compared. A set of linear routings is used to demonstrate the dissipative and dispersive behavior predicted by the analyses and to verify the accuracy of an expression that quantifies the numerical diffusion of the model. The analyses provide a basis for selection of numerical parameters for model applications. The capability and accuracy of the model are enhanced when physical wave diffusion is balanced by numerical diffusion in the model. Maintaining the diffusion balance re­quires that the time derivative weighting parameter 0 be variable and in some instances negative. Though some amount of phase error is introduced, negative 0 values have no adverse effect upon model stability. Field studies were con­ducted to demonstrate the benefits of careful model development and analysis, and to verify the diffusion wave model for rapidly varying tailwater flow. The bed slope and roughness characteristics of the field study reaches (below Apalachia and Norris Dams) differ greatly, spanning those of a large number of rivers of practical interest. The accurate simulation of flow in both of these tailwaters attests to the soundness of both the physical basis of the model and the numerical solution technique. The field studies confirm, for the extreme case of rapidly varying flow in a mildly sloped river, that inertia has a negligible effect upon unsteady flow waves at low Froude numbers. Additionally, these studies verify that diffusion of short-period waves in rivers is generally significant.
    Type of Medium: Series available for loan
    Pages: vi, 41 Seiten , Illustrationen
    Series Statement: CRREL Report 83-7
    URL: https://cdm16021.contentdm.oclc.org/digital/collection/p266001coll1/id/7006/rec/1
    URL: https://hdl.handle.net/11681/9313
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Physical diffusion and dispersion in open channel flow Modeling approach Description of the diffusion wave flow routing model Analysis of the numerical model Modified equation and Hirt analyses of diffusion wave model von Neumann analysis of the diffusion wave model Linear case studies Accuracy considerations of the numerical solution Field studies Apalachia Dam tailwater Norris Dam tailwater Conclusions Literature cited
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  • 9
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    Series available for loan
    Radar detection of ice wedges in Alaska (1982)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-82/43
    In: CRREL Report, 82-43
    Description / Table of Contents: The radar signatures of ice wedges and wedge-like structures have been investigated for a variety of soil conditions. The radar used for this study emitted short sinusoidal pulses of about 10-ns duration with an approximate center frequency of 150 MHz. Most of the ice wedges existed at depths of about 1 m in a variety of silty and sandy soils with both frozen and thawed active layers. The position of the wedges was usually identified from corresponding surface features. An artificial ice wedge in coarse-grained alluvium was also profiled as well as wedge-like structures of fine silt in a coarse-grained glacial outwash. All wedges and wedge-like structures produced a hyperbolic reflection profile except when an active layer of thawed, saturated silt was present which eliminated returns from the wedges. The peaks of the hyper-bolas were sometimes masked by reflections from the permafrost table or other material interfaces, and multiple hyperbolas occurred at some sites. The dielectric constant of the host medium was often calculated from the linear portions of the hyperbolas and the results were verified by laboratory time domain reflectometry measurements per-formed on field samples. In some cases, hyperbolic profiles originated at several meters depth suggesting that deep ice wedges could be detected in areas of cold permafrost.
    Type of Medium: Series available for loan
    Pages: iv, 19 Seiten , Illustrationen
    Series Statement: CRREL Report 82-43
    URL: https://apps.dtic.mil/dtic/tr/fulltext/u2/a124571.pdf
    URL: https://hdl.handle.net/11681/9324
    Language: English
    Note: CONTENTS Abstract Preface Introduction Background Objectives and procedures Equipment used Radar TDR Definitions Massive ice Results Artificial wedge: Norwich, Vermont Ice wedges in sand: Fish Creek, Alaska Ice wedges: Prudhoe Bay, Alaska Ice wedges under thawed fine-grained soils: North Slope, Alaska Wedge-like soil structures: Ft. Greely, Alaska TDR measurements Summary and concluding remarks Literature cited Appendix A: Brief discussion of dispersion
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  • 10
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    Evaluation of procedures for determining selected aquifer parameters (1982)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-82/41
    In: CRREL Report, 82-41
    Description / Table of Contents: Many of the important factors influencing the choice of appropriate aquifer test procedures are presented. The concepts of bias, accuracy and spatial variabil­ity are explained. The definitions of a number of aquifer parameters are devel­oped from basic principles demonstrating the underlying assumptions and limita­tions. The parameters considered are: piezometric head, hydraulic conductiv­ity/intrinsic permeability, flow direction, specific discharge magnitude, transmissivity, volumetric flow rate, total porosity, effective porosity, aver­age linear velocity, storage coefficient, specific yield, dispersion coefficient-aquifer dispersivity. For each parameter several techniques are described, evaluated and ranked in terms of perceived potential accuracy, simplicity and value to contaminant transport studies. It must be stressed, however, that the evaluations are based principally upon theoretical grounds, and not upon actual conduct of the described procedures.
    Type of Medium: Series available for loan
    Pages: iv, 111 Seiten , Illustrationen
    Series Statement: CRREL Report 82-41
    URL: https://cdm16021.contentdm.oclc.org/digital/collection/p266001coll1/id/7365/rec/1
    URL: https://hdl.handle.net/11681/9322
    Language: English
    Note: CONTENTS Abstrac Preface Introduction Purpose Scope Concept of accuracy Test selection Definition of parameters Piezometric head Use of piezometers Hydraulic conductivity Flow direction Specific discharge magnitude Transmissivity Volumetric flow rate Porosity Average linear velocity Storage coefficient-specific yield Aquifer dispersivity Parameter estimation techniques Piezometric head Hydraulic conductivity Direction and magnitude of specific discharge vector Transmissivity Volumetric flow rate Total porosity Average linear velocity Storage coefficient Specific yield Effective porosity Aquifer dispersivity-dispersion coefficients Conclusions Literature cited
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