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  • English  (4,036)
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  • 1
    Monograph available for loan
    Monograph available for loan
    Cambridge : Cambridge Univ. Press
    Call number: M 98.0430 ; PIK N 071-98-0100 ; PIK N 071-98-0101 ; PIK N 071-01-0178
    Type of Medium: Monograph available for loan
    Pages: X, 517 S.
    ISBN: 0521634555
    Classification:
    Meteorology and Climatology
    Language: English
    Location: Upper compact magazine
    Location: A 18 - must be ordered
    Location: A 18 - must be ordered
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  • 2
    Monograph available for loan
    Monograph available for loan
    Mountain View, California [u.a.] : Mayfield
    Call number: M 98.0437
    Type of Medium: Monograph available for loan
    Pages: xxvii, 508 S.
    ISBN: 1559346477
    Classification:
    E.8.
    Language: English
    Location: Upper compact magazine
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  • 3
    Series available for loan
    Series available for loan
    Luxembourg : Centre Européen de Géodynamique et de Séismologie
    Associated volumes
    Call number: S 02.0465(15) ; AR 98/37 ; 8/M 06.0095
    In: Cahiers du Centre Européen de Géodynamique et de Séismologie
    Type of Medium: Series available for loan
    Pages: 99 S.
    ISBN: 2879770084
    Series Statement: Cahiers du Centre Européen de Géodynamique et de Séismologie 15
    Classification:
    Seismology
    Language: English
    Location: Lower compact magazine
    Location: Reading room
    Location: Reading room
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  • 4
    Monograph available for loan
    Monograph available for loan
    Oxford [u.a.] : Blackwell Science
    Call number: M 98.0416 ; AWI G1-00-0131
    Type of Medium: Monograph available for loan
    Pages: xi, 404 S.
    ISBN: 0632035072
    Classification:
    A.3.1.
    Language: English
    Location: Upper compact magazine
    Location: Upper compact magazine
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  • 5
    Monograph available for loan
    Monograph available for loan
    Cambridge : Cambridge Univ. Press
    Call number: M 98.0429
    Type of Medium: Monograph available for loan
    Pages: xvi, 429 S.
    ISBN: 0521473330
    Classification:
    Geomagnetism, Geoelectromagnetism
    Language: English
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  • 6
    Call number: M 98.0517 / Regal 4
    Type of Medium: Monograph available for loan
    Pages: 755 S.
    Classification:
    Geology
    Language: English
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  • 7
    Call number: S 99.0139(228)
    In: Wissenschaftliche Arbeiten der Fachrichtung Vermessungswesen der Universität Hannover
    Type of Medium: Series available for loan
    Series Statement: Wissenschaftliche Arbeiten der Fachrichtung Vermessungswesen der Universität Hannover 228
    Language: English
    Location: Lower compact magazine
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  • 8
    Call number: AR 98/36
    In: International IDNDR-Conference on Early Warning Systems for the Reduction on Natural Disasters
    Type of Medium: Monograph available for loan
    Pages: 125 S.
    Classification:
    A.0.6.
    Language: English
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  • 9
    Call number: AR 98/25
    Classification:
    Deposits
    Language: English
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  • 10
    Monograph available for loan
    Monograph available for loan
    Sebastopol : O'Reilly
    Call number: PIK M 033-14-0214
    Type of Medium: Monograph available for loan
    Pages: XXII, 407 S.
    Edition: 2. ed., [Nachdr.]
    ISBN: 9781565922259
    Series Statement: UNIX power tools
    Language: English
    Location: A 18 - must be ordered
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  • 11
    Call number: ZSP-202-343
    In: Research report
    Description / Table of Contents: CONTENTS: Abstract. - Preface. - Introduction. - Experimental procedure. - Experimental and theoretical equations. - Results and discussion. - Conclusions. - Literature cited.
    Description / Table of Contents: Simultaneous laser extinction measurements were made in warm fog at wavelengths of 0.6238, 1.15 and 10.6 [Mu]. The warm fog was generated in a 4-m^3 environmental chamber. Particle sampling was carried out simultaneously with the laser measurements using an impactor. Using the same size distribution in each case the theoretical extinction coefficients were calculated and compared with the experimental coefficients. Results obtained during this experiment and aprevious one indicate that propagation at 1.15 [Mu] is adversely affected by the presence of atmospheric water vapor. Experimental data obtained simultaneously at 0.6328 and 10.6 [Mu] indicate that virtually no difference exists between the extinction coefficients at these two wavelengths for moderate particle concentrations while at much larger concentrations [Alpha]0.6328 increases indefinitely while [Alpha]10.6 levels off at 0.2.
    Type of Medium: Series available for loan
    Pages: iii, 7 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 343
    Language: English
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  • 12
    Call number: ZSP-202-344
    In: Research report
    Description / Table of Contents: CONTENTS: Abstract. - Preface. - Introduction. - Approach and methods. - Results. - Lake morphology. - Elongation. - Orientation. - Percentage cover (density). - Lake classification. - L1 unit. - L2 unit. - L3 unit. - L4 unit. - L5 and Lu units. - Other units. - Lake basin depths. - Ice volume and basin genesis. - Geological implications. - Conclusions. - Selected bibliography.
    Description / Table of Contents: The lakes of the Arctic Coastal Plain of northern Alaska were classified, based on size, shape, orientation and distribution, into six lake units and three nonlake units. Regional slope and relief were demonstrated to control lake size, the largest lakes occurring on the flattest, northernmost segment of the Coastal Plain. Using ERTS-1 sequential imagery and existing photography and data, lakes were grouped according to three depth ranges, 〈 1 m, 1-2 m and 〉 2 m. Deepest lakes have the longest period of summer ice cover. Ice on shallow lakes melts the earliest. Maximum depths of lakes were computed based on ice volume content of the perennially frozen ground (permafrost) and these agreed with observed values and ranges. The lake classification and regional ERTS-1 coverage also appear to provide additional information on the limits of late-Pleistocene transgressions on the Coastal Plain.
    Type of Medium: Series available for loan
    Pages: iv, 21 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 344
    Language: English
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  • 13
    Monograph available for loan
    Monograph available for loan
    Cambridge : Cambridge Univ. Press
    Call number: M 98.0449
    Type of Medium: Monograph available for loan
    Pages: ix, 193 S.
    ISBN: 0521453461
    Classification:
    A.3.1.
    Language: English
    Location: Upper compact magazine
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  • 14
    Call number: S 90.0062(27)
    In: Berliner geowissenschaftliche Abhandlungen
    Type of Medium: Series available for loan
    Pages: X, 176 S.
    ISBN: 3895820555
    ISSN: 0722-687X
    Series Statement: Berliner geowissenschaftliche Abhandlungen : Reihe B, Geophysik 27
    Classification:
    Regional Geology
    Language: English
    Location: Lower compact magazine
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  • 15
    Call number: M 98.0488
    Type of Medium: Monograph available for loan
    Pages: xii, 676 S.
    ISBN: 0521465168
    Classification:
    Mineralogy
    Language: English
    Location: Upper compact magazine
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  • 16
    Monograph available for loan
    Monograph available for loan
    Stuttgart [u.a.] : Teubner
    Associated volumes
    Call number: 19/M 98.0498
    In: Advances in numerical mathematics
    Type of Medium: Monograph available for loan
    Pages: VIII, 508 S.
    ISBN: 0471967939
    Series Statement: Advances in numerical mathematics
    Classification:
    C.1.8.
    Language: English
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  • 17
    Monograph available for loan
    Monograph available for loan
    New York, NY [u.a.] : Oxford Univ. Press
    Call number: M 98.0528
    Type of Medium: Monograph available for loan
    Pages: xi, 343 S.
    ISBN: 0195069641
    Classification:
    Meteorology and Climatology
    Language: English
    Location: Upper compact magazine
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  • 18
    Call number: 4/M 98.0541
    In: Lecture notes in earth sciences
    Type of Medium: Monograph available for loan
    Pages: X, 191 S.
    ISBN: 3540650067
    ISSN: 0930-0317
    Series Statement: Lecture notes in earth sciences 80
    Classification:
    Geophysical Exploration, Geophysical Prospecting
    Language: English
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  • 19
    Monograph available for loan
    Monograph available for loan
    Potsdam : GeoForschungsZentrum
    Associated volumes
    Call number: 21/STR 98/14 ; 21/STR 98/14(2. Ex.)
    In: Scientific technical report
    Type of Medium: Monograph available for loan
    Pages: 359 S. : graph. Darst., Kt.
    Series Statement: Scientific Technical Report / Geoforschungszentrum Potsdam 98/14
    Classification:
    Tectonics
    Language: English
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  • 20
    Monograph available for loan
    Monograph available for loan
    Potsdam
    Associated volumes
    Call number: AR 98/31-2
    In: 1998 IERS Workshop
    Type of Medium: Monograph available for loan
    Pages: 24 S.
    Classification:
    A.1.1.
    Language: English
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  • 21
    Monograph available for loan
    Monograph available for loan
    Warszawa : Polish Scient. Publ.
    Call number: PIK N 456-11-0194
    Description / Table of Contents: Contents: 1. Climatology as a science ; 2. Climate-forming factors ; 3. Geographical distribution and variation of major meteorological elements ; 4. A brief survey of major types of climate ; 5. Changes and fluctuations of climates
    Type of Medium: Monograph available for loan
    Pages: XIV, 422 S. : graph. Darst., 1 Kt.
    Uniform Title: Klimatologia ogólna
    Language: English
    Location: A 18 - must be ordered
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  • 22
    Monograph available for loan
    Monograph available for loan
    Boulder, Colo. : Environmental Research Laboratories
    Call number: MOP 41125 / Mitte
    Type of Medium: Monograph available for loan
    Pages: VIII, 499 Seiten
    Language: English
    Location: MOP - must be ordered
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  • 23
    Call number: ZSP-202-346
    In: Research report / Cold Regions Research and Engineering Laboratory, 346
    Description / Table of Contents: CONTENTS: Abstract. - Preface. - USA CRREL project and personnel involvement. - Part I. Introduction. - Background. - Literature review. - Part II. CRREL investigations from 1970 - 1974. - Initial literature survey (1970). - Oil detection kit development. - Survey of Cape Simpson, Alaska, natural crude oil seepages (1970). - Haines-Fairbanks military pipeline investigations (1971-1973). - Barrow investigations (1970-1974). - Fairbanks and Fox investigations. - Germination studies. - Physiological studies. - Dispersant studies. - Microbiological investigations. - Field investigations of accidental petroleum losses. - Part III. Recent related literature. - Part IV. Conclusions and recommendations. - USA CRREL reports, publications and presentations on Alaska oil spill research. - Literature cited.
    Description / Table of Contents: Knowledge concerning the biological effects of oil pollution on arctic and subarctic terrestrial ecosystems is limited. USA CRREL research personnel conducted investigations from 1970 through 1974 to expand information in this field. Objectives were to: 1) define the ecosystems most sensitive to the presence of crude oil or its refined products, 2) quantify and understand the injury response, and 3) establish time frames for manifestation of damage and natural restorative processes in arctic and subarctic regions. This was accomplished through: 1) surveys of natural oil seepages and past accidential spills in the Arctic and Subarctic, 2) initiation of controlled oil spills and 3) detailed laboratory investigations. Results demonstrated that terrestrial oil spills will to some degree be detrimental to both arctic and subarctic plant communities. Degree and longevity of damage will be influenced primarily by the magnitude of the spill, season of occurrence and existing soil moisture content. Rapid recovery of plant communities subjected to spills will occur only if root systems remain relatively unaffected. Damage will be more extensive and long-term when root systems are saturated with oil. Effects of damage will be manifested gradually over several seasons being influenced by winter stresses. Variation does exist in plant species susceptibility. Carex aquatilis, a predominant sedge of the arctic, is markedly resistant to crude oil damage. In the taiga Picea mariana is very susceptible. Plant recovery can be enhanced through the application of fertilizer. Fertilization, in addition to its direct effect on plant nutrition, will stimulate microbial decomposition of crude oil.
    Type of Medium: Series available for loan
    Pages: vii, 66 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 346
    Language: English
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  • 24
    Call number: ZSP-202-338
    In: Detecting structural heat losses with mobile infrared thermography / R.H. Munis, S.J. Marshall and M.A. Bush, Part II
    In: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command, 338
    Description / Table of Contents: CONTENTS: Abstract. - Preface. - Introduction. - Discussion of heat loss survey of six housing units. - Survey of base facilities. - Conclusions. - Literature cited.
    Description / Table of Contents: During the winter of 1973-74 a mobile infrared thermography system was used to survey housing units and base facilities at Pease Air Force Base, Portsmouth, New Hampshire. This report provides both qualitative and quantitative evidence regarding heat flow out of the eave vents of these housing units. Calculations indicate that a significant amount of heat is being lost in this manner due to inadequate attic (cap) insulation. Possible evidence of incomplete ventilation could explain the presence of condensation in the housing units. Analyses of thermograms are presented to show the possible existence of low and high pressure areas around a structure and how they relate to heat loss.
    Type of Medium: Series available for loan
    Pages: iii, 29 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 338
    Language: English
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  • 25
    Call number: ZSP-202-347
    In: Research report / Cold Regions Research and Engineering Laboratory, 347
    Description / Table of Contents: CONTENTS: Abstract. - Preface. - Introduction. - Experimental. - Results and discussion. - Applications. - Literature cited.
    Description / Table of Contents: Chemical analysis of century-old ice from continuous 5 to 7 year intervals of three ice cores from south and central Greenland (Dye 3, Milcent and Crete) show maximum concentrations of Na, Mg,Ca, K, and Al during early spring and minimum concentrations during late summer and early fall. Peak spring values are as much as 10 times greater than fall values. Because of the large seasonal chemical variations, samples used for depth-age or annual deposition rate studies must represent accumulation from exactly one year or whole multiples of a year. The seasonal chemical variations seem promising as a new method of defining annual layers and thus dating old ice cores.
    Type of Medium: Series available for loan
    Pages: iii, 5 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 347
    Language: English
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  • 26
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/26
    In: CRREL Report, 76-26
    Description / Table of Contents: Debris over a 44-mile stretch of the Chena River was studied. The study area extended from the first bridge on the Chena Hot Springs Road to the Chena River Flood Control damsite. The purpose of the study was to assess the potential danger to the Chena River Flood Control Dam outlet structure. Debris was catalogued, log jams were measured, and sources of debris were studied. The average size of logs was determined, as well as the number of logs present on the river. The authors concluded that a serious debris problem existed and would remain serious for the foreseeable future. Recommendations for debris handling were made.
    Type of Medium: Series available for loan
    Pages: iv, 17 Seiten , Illustrationen
    Series Statement: CRREL Report 76-26
    Language: English
    Note: Contents Abstract Preface Summary Introduction Origin of debris Volume, magnitude Types of debris Hazards of the debris Recommended measures to counteract log jamming Conclusions and recommendations Future work Epilogue Selected bibliography Appendix: Additional photographs of Chena River debris
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  • 27
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/27
    In: CRREL Report, 76-27
    Description / Table of Contents: In Part I a physically based model was used to predict daily snowmelt on 2000 m sq plots in the Subarctic. The plots had a range of aspects and inclinations in boreal forest and on the tundra. The energy balance, computed for each of the plots, was compensated for differences in radiative and turbulent energy fluxes caused by varied slope geometry and vegetative cover. The turbulent energy fluxes were also corrected for the effects of the stable stratification of the air over the snow surface. The predictions of the model were compared with daily melts derived from runoff measured on the snowmelt plots. The results show that the method is a good predictor of daily amounts of snowmelt, although some uncertainties are introduced by changes in the snow surface during the melt period. In Part II, a physically based model of the movement of water through snowpacks was used to calculate hydrographs generated by diurnal waves of snowmelt on the tundra and in the boreal forest of subarctic Labrador. The model was tested against measured hydrographs from hillside plots that sampled a range of aspect, gradient, length, vegetative cover, and snow depth and density. The model yielded good results, particularly in the prediction of peak runoff rates, though there was a slight overestimate of the lag time. A comparison of predictions against field measurements indicated that, given the ranges over which each of the controls is likely to vary, the two most critical factors controlling the hydrograph are the snow depth and the melt rate, which must be predicted precisely for short intervals of time. Permeability of the snowpack is another important control, but it can be estimated closely from published values.
    Type of Medium: Series available for loan
    Pages: ix, 40 Seiten , Illustrationen
    Series Statement: CRREL Report 76-27
    Language: English
    Note: Contents: Abstract Preface Summary Notation Scope of the study Part I. Energy balance computations Introduction The experimental sites Instrumentation Theoretical Radiation heat flow Hr Sensible heat flux Hc and latent heat flux He The application of the heat flow model Results and discussion Conclusions and recommendations Part II. Comparison of water runoff computations and measurements Introduction The runoff model The unsaturated zone The saturated layer The field study Instrumentation of the plots Descriptive hydrology Application of the runoff model The unsaturated zone The saturated zone Discussion and conclusions Comparison of predicted and observed hydrographs Factors affecting results Literature cited
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  • 28
    Monograph available for loan
    Monograph available for loan
    Tokyo : University of Tokyo Press
    Call number: MOP 45324(1) / Mitte ; MOP 45324(2) / Mitte
    Type of Medium: Monograph available for loan
    Pages: 16, 549 Seiten
    Language: English
    Location: MOP - must be ordered
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  • 29
    Monograph available for loan
    Monograph available for loan
    Urbana : Illinois State Water Survey
    Call number: MOP 45166
    Type of Medium: Monograph available for loan
    Pages: 57 Seiten
    Language: English
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  • 30
    Monograph available for loan
    Monograph available for loan
    Boston [u.a.] : Allyn and Bacon
    Call number: PIK F 110-95-0417 ; PIK F 110-00-0429
    Type of Medium: Monograph available for loan
    Pages: XIV, 369 Seiten , Illustrationen, Diagramme , 24 cm
    ISBN: 0205156053 (alk. paper)
    Language: English
    Location: A 18 - must be ordered
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  • 31
    Monograph available for loan
    Monograph available for loan
    Copenhagen : [s.n.]
    Call number: AWI G7-19-92129
    Type of Medium: Monograph available for loan
    Pages: 62 Seiten , Illustrationen
    Edition: Draft
    Language: English
    Note: CONTENTS: Flight plan 1996. - C130 schedule. - NGRIP 1996 Schedule. - Overview of 1996 schedule. - Camp Layout. - Buildings. - Number of field participants. - NGRIP 1996 Sub programs. - CARDS Radar test. - KMS Elevation measurements. - SITREP. - Terms of Reference during the field operation. - Accidents and Illness. - Mail to NGRIP participants. - Cargo shipments to Greenland. - Personnel transport 1996. - Booze and drugs. - Vacation in Greenland. - Shipping boxes. - Welcome to the NGRIP camp. - List of participants. - NGRIP camp load. - Kangerlussuaq and Surrounding Area. - Thule Air Base, Greenland, Base Operations. - Other useful information for Thule passengers. - Uplift 1996. - Typical specs for LC-130 and Twin Otter. - Useful data. - Coordination of C-130 in Kangerlussuaq. - Aviation weather reports. - Typical communication plan. - Summary of frequencies used in Greenland. - Phonetic alphabet. - Personal field equipment. - Map of GRIP camp. - NGRIP, Maps of one and two line set up. - NGRIP trenches. - Map of Greenland. - Map of north Greenland. - Map of ice divide north of GRIP. - Map of magnetic declination in Greenland. - Positions in Greenland. - Relevant distances and directions. - 1996 Twin Otter hours. - List of NGRIP addresses.
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  • 32
    Call number: MOP 45542 / Mitte ; MOP 44959 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 278 Seiten , Illustrationen
    Language: Russian , English
    Note: In kyrillischer Schrift , Zusammenfassung und Inhaltsverzeichnis in englischer Sprache
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  • 33
    Call number: MOP 45268 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 302 Seiten , graphische Darstellungen, Karten
    Language: English
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  • 34
    Call number: ZSP-SCAR-570-1
    In: Report to SCAR on Antarctic research activities of Germany (FRG), 1
    Type of Medium: Series available for loan
    Pages: 21 Seiten
    ISSN: 0179-0072
    Series Statement: Report to SCAR on Antarctic research activities of Germany (FRG) 1
    Language: English
    Note: Contents: Membership of the National Committee on Antarctic Research of the Federal Republic of Germany. - Introduction. - Station. - Field Activities 1974-1979. - Planned Activities 1979/80. - References.
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  • 35
    Series available for loan
    Series available for loan
    Columbus, Ohio : Institute of Polar Studies, The Ohio State University
    Associated volumes
    Call number: AWI G7-19-92159
    In: Report / Institute of Polar Studies, No. 64
    Type of Medium: Series available for loan
    Pages: XVII, 148 Seiten , Illustrationen
    Series Statement: Report / Institute of Polar Studies 64
    Language: English
    Note: TABLE OF CONTENTS: Abstract. - Acknowledgments. - List of Figures. - List of Plates. - List of Tables. - Value of Microparticle Studies. - Reasons for Variations in Particle Concentration. - Laboratory Techniques. - Particle Concentration and Size Distribution. - Sample Preparation. - Contamination. - Particle Counters. - Laboratory Procedures. - Particle Composition. - Sample Preparation. - Types of Particles and Their Seasonal Variation. - Particle Types. - Variations of Particle Concentrations. - Antarctic Peninsula. - Marie Byrd Land. - Quelccaya Ice Cap, Peru. - Annual Layers in Deep Ice Cores. - Chronologies for the Byrd and Camp Century Deep Ice Cores. - The Byrd Station Deep Ice Core. - Age Calculation. - Discussion. - The Camp Century Deep Ice Core. - Vertical Strain Rates. - Age Calculation. - Discussion. - Morphology and Elemental Composition of Microparticles. - Data Analysis. - Results. - Discussion. - The Relationships Among Dust, Oxygen Isotopes and Climate. - Microparticle Variations Over Millennial Time Invervals. - Dust, Oxygen Isotopes and Climate. - Discussion. - Is There A Relationship Between Volcanic Activity and Climatic Change?. - General. - Theory. - Supportive Evidence. - Cycles. - Discussion. - Suggestions for Future Work. - Conclusions. - References. - Appendix A. - Appendix B. - Appendix C. - Appendix D.
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  • 36
    Call number: 21/AR 19.92225
    Type of Medium: GFZ publications
    Pages: circa 70 (verschiedene Seitenzählungen) , Illustrationen
    Language: English
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  • 37
    Series available for loan
    Series available for loan
    Köln : Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt
    Associated volumes
    Call number: MOP 44108 / Mitte
    In: Mitteilung / Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt, 75-25
    Type of Medium: Series available for loan
    Pages: 177 Seiten , Illustrationen
    Edition: Als Manuskript gedruckt
    Series Statement: Mitteilung / Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt 75-25
    Language: English
    Note: Mit deutscher Zusammenfassung
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  • 38
    Monograph available for loan
    Monograph available for loan
    [Erscheinungsort nicht ermittelbar] : [Verlag nicht ermittelbar]
    Call number: AWI G7-19-92324
    Type of Medium: Monograph available for loan
    Pages: 23 Seiten , Illustrationen
    Language: English
    Note: Contents: 1. Personnel at DC. - 2. Summary timetable of events for EPICA personnel. - 3. Transport to/from DC for EPICA personnel. - 4. Building period. - 5. Scientific activity - equipment layout. - 6. Science processing line. - 7. Results from this season. - 8. General comments on communications, logistics and general status of the camp. - 9. Tasks that EPICA personnel need to do next season. - 10. Recommendations for 1998/99. - 11. Acknowledgements.
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  • 39
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-85/19
    In: CRREL Report, 85-19
    Description / Table of Contents: Ground-probing radar can be an effective tool for exploring the top 10 to 20 m of ground, especially in cold regions where the freezing of water decreases signal absorption. However, the large electrical variability of the surface, combined with the short wavelengths used, can often cause severe ground clutter that can mask a desired, deeper return. In this study a model facility was constructed consisting of a metallic reflector covered by sand. Troughs of saturated sand were emplaced at the surface to vary surface electrical properties and to act as a noise source to interfere with the bottom reflections. Antenna polarization and height, and signal stacking in both static (antennas stationary) and dynamic (antennas moving) modes were then investigated as methods for reducing the surface clutter. Polarization parallel to the profile direction (perpendicular to the troughs' axes) gave profiles superior to the perpendicular case because of the directional sensitivity of the antenna radiation. Dynamic stacking greatly improved the signal-to-noise ratio because noise sources were averaged as the antennas moved, while the desired reflector, buried at constant depth, was enhanced. Raising the antennas above the surface also reduced noise because the surface area over which reflections were integrated increased. All three noise reduction techniques could be effective in surveys for reflectors at nearly constant depth such as groundwater tables or ice/water interfaces if the lateral variation in undesired ground propertiesis sufficiently random.
    Type of Medium: Series available for loan
    Pages: iv, 23 Seiten , Illustrationen
    Series Statement: CRREL Report 85-19
    Language: English
    Note: CONTENTS Abstract Preface Introduction Objective and procedures Materials and methods Subsurface radar Model facility Results Isolated disturbances-surface and raised analog profiles Multiple disturbances Discussion and conclusions Literature cited
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  • 40
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/25
    In: CRREL Report, 76-25
    Description / Table of Contents: The primary objective of this investigation was to compile baseline information pertaining to the ocean circulation, especially the extent and patterns of tidal currents and tidal flushing, in Cook Inlet, Alaska, utilizing aircraft and satellite imagery with corroborative ground truth data. LANDSAT-1 and NOAA-2 and -3 imagery provided repetitive, synoptic views of surface currents, water mass migration and sediment distribution during different seasons and tides. Color, color infrared and thermal infrared imagery acquired on 22 July 1972 with the NASA NP-3A aircraft were used to analyze currents, mixing patterns and sediment dispersion in selected areas. Temperature(C), salinity (0/00) and suspended sediment concentration (mg/l) data and hand-held photography were utilized as ground truth information in the interpretation of the aircraft and satellite imagery. Coriolis effect, semidiurnal tides and the Alaska current govern the estuary circulation. Clear, oceanic water enters the inlet on the southeast during flood tide, progresses northward along the east shore with minor lateral mixing, and remains a distinct water mass to the latitude of Kasilof-Ninilchik. South of the forelands, mixing with turbid inlet water becomes extensive. Turbid water moves south primarily along the north shore during ebb tide and a shear zone between the two water masses forms in mid-inlet south of Kalgin Island. Currents adjacent to and north of the forelands are complicated by tidal action, coastal configuration and bottom effects. Turbulence is greatest throughout the water column along the south shore and stratification is more pronounced in Kamishak and Kachemak Bays, especially when fresh water runoff is high.
    Type of Medium: Series available for loan
    Pages: ix, 92 Seiten , Illustrationen
    Series Statement: CRREL Report 76-25
    Language: English
    Note: CONTENTS Abstract Preface Summary Conversion factors: U.S. customary to metric (SI) units of measurement. Introduction Background Objectives Project history Approach Aircraft imagery LANDSAT-1 imagery NOAA-2 and -3 satellite imagery Ground truth data Imagery and ground truth data analysis Physical and cultural setting Geography Geology Climate Hydrology Local industry and population density Sources of estuarine pollution Results and discussion Coastal configuration Bathymetry Tides Asymmetry of tidal flow/duration across inlet Suspended sediment distribution and circulation Sea ice Tidal flushing characteristics Summary and conclusions Applications Recommendations Literature cited Appendix A. RS-14 infrared scanner imagery
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  • 41
    Call number: M 19.92948
    Type of Medium: Dissertations
    Pages: X, 167 Seiten , Illustrationen
    ISBN: 90-9010069-5
    Language: English
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  • 42
    Call number: AWI SCAR-AR-19-92813
    In: National report to SCAR on Antarctic scientific activities for the years ... and planned program for ... : progress report, 41
    Type of Medium: Series available for loan
    Pages: 25 Seiten
    Series Statement: National report to SCAR on Antarctic scientific activities for the years ... and planned program for ... : progress report 41
    Language: English
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  • 43
    Call number: AWI SCAR-IT-19-92821
    In: Italy antarctic research report to SCAR, June-1999
    Type of Medium: Series available for loan
    Pages: 15, V Seiten
    Language: English
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  • 44
    Monograph available for loan
    Monograph available for loan
    Mineola, NY : Dover Publications
    Call number: PIK M 323-19-92793
    Type of Medium: Monograph available for loan
    Pages: XI, 484 Seiten , Diagramme
    ISBN: 0486696200 (pbk.)
    Series Statement: Dover books on mathematics
    Language: English
    Location: A 18 - must be ordered
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  • 45
    Monograph available for loan
    Monograph available for loan
    Athens : Institute of Geological and Mining Research
    Call number: AWI G1-19-93055
    Type of Medium: Monograph available for loan
    Pages: 58 Seiten, 10 Blätter , Illustrationen
    Language: English
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  • 46
    Call number: PIK N 311-19-93084
    Type of Medium: Monograph available for loan
    Pages: XIII, 308, [10] S , Illustrationen, Diagramme
    ISBN: 0471965243
    Series Statement: Dahlem workshop report
    Language: English
    Location: A 18 - must be ordered
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  • 47
    Call number: AWI P6-82-0347
    Type of Medium: Monograph available for loan
    Pages: xi, 59 Seiten
    Language: English
    Note: CONTENTS Membership of the SCAR Group of Specialists (EAMREA) Preface Preface to 1977 unpublished report of the SCAR Group of Specialists (EAMREA) 1. Introduction 1.1 Terms of reference 1.2 Environmental impact statements 2. Assessment of mineral resource potential in Antarctica 3. Present knowledge of mineral occurrences and mineral resources of Antarctica 3.1 Assessment of onshore mineral resource potential 3.2 Estimation of regional mineral potential Geological factors Logistic factors Economic factors 3.3 Commodity classification Local consumption Metallic minerals Non-metallic minerals Fossil fuels (excluding petroleum) Geothermal energy Minerals for export Non-metallic minerals and fossil fuels Metallic minerals 3.4 Probable areas of Antarctica for onshore mineral exploration and exploitation 3.5 Offshore mineral potential of Antarctica 3.6 The continental shelf of Antarctica as a source of hydrocarbons 3.7 Problems of exploration and exploitation for hydrocarbons in the southern oceans 3.8 Economic feasibility of extracting hydrocarbons 3.9 Non-fuel mineral resource potential of the southern oceans Manganese nodules Icebergs as a fresh water resource 4. Possible environmental effects 4.1 Special features of the Antarctic environment Temperatures Winds Inversion layers The southern oceans The continental shelf Ice features Beaches Pack ice Forecasting the weather 4.2 Environmental threats to exploitable living resources Economic factors Threats to economically important species Threats to survival of species Threats to special ecosystems, habitats and communities Special habitats and communities Unique sites Summary 4.3 Impacts on the environment Oil extraction Oil extraction problems Ore mining Construction effects Terrestrial installations Sea floor installations Treatment of ores and oil Beneficiation processes Local energy sources Consequences of increased human activity Introduction of biological materials Towing of icebergs 4.4 Extent of effects Spatial effects Local effects Large-scale effects Scale of environmental effects: potential inputs Scale of environmental effects: potential consequences Temporal effects Transient effects Persistent effects 4.5 Communities and systems needing special protection Soils Abiotic soils Dry soils Maritime Antarctic soils Frozen soils Lakes and streams Terrestrial vegetation Terrestrial fauna 4.6 Impacts beyond the Antarctic Climatic change from industrial activities Air borne pollution from Antarctica Water borne pollution from Antarctica 5. Further research activities 5.1 Gaps in knowledge Environment Soils Terrestrial biota Climate Meteorology Oceanography Marine biology 5.2 Research needs Biodegradability of oil Controlled oil spills Chemical effects Experimental perturbations Controlled ecosystem experiments Surveys 5.3 Special protective measures Industrial controls Improved weather forecasting Legislative controls Routine monitoring Appendices A Recommendation VIII-14 of the Eighth Antarctic Treaty Meeting B SCAR Reponse to Recommendation VIII-14, including terms of reference of the EAMREA Group of Specialists References
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  • 48
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/12
    In: CRREL Report, 79-12
    Description / Table of Contents: An analysis of a point source bubbler system used to induce local melting of an ice cover is presented. The analysis leads to a numerical simulation programmed in FORTRAN which may be used to predict the effectiveness of such systems. An example application is presented using a typical record of average daily air temperatures. The FORTRAN program for the point source simulation as well as a FORTRAN program for line source systems are included in the Appendix.
    Type of Medium: Series available for loan
    Pages: iii, 12 Seiten , Illustrationen
    Series Statement: CRREL Report 79-12
    Language: English
    Note: CONTENTS Abstract Preface Introduction Outline of analysis Plume analysis Heat transfer analysis Temperature of impinging plume Heat transfer coefficient Melting of the ice cover Simulation example Thermal reserve analysis Literature cited Appendix
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  • 49
    Call number: MOP 40801 / Mitte
    Type of Medium: Monograph available for loan
    Pages: II, 170 Seiten , Illustrationen
    Language: English
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  • 50
    Monograph available for loan
    Monograph available for loan
    Oak Ridge, Tenn. : U.S. Department of Energy
    Call number: MOP 44436 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 15, 3, 5 Seiten
    Language: English
    Note: The field experiments were continued to estimate convective storm particulate scavenging efficiency in proximity to the St. Louis, Missouri urban-industrial complex. Complementary studies of the urban aerosol characterization, source strength, and removal processes were also studied. The 1975 field effort shifted emphasis from the immediate St. Louis area to the Alton-Wood River industrial complex. Along with the change in size and configuration of the network, there were increases in the numbers of most types of samplers. The new network yielded the following types of samples for analysis and interpretation: 1065 total rain samples from 85 sites; 68 sequential rainwater samples from 2 locations; 272 wet/dry samples from 7 locations; 216 air filter samples from 7 locations; 36 air filter samples from aircraft; and raindrop spectrometer data from 11 sites for the period 17 June-18 August. The analysis procedures require that all water samples undergo filtering for separate analyses of soluble and insoluble fractions of the elemental concentrations. This data collection effort provided a record number of samples for chemical analysis. Approximately 4000 pibals and over 370 radiosondes were released in the operational period, providing wind and thermodynamic data on 33 days. Aircraft missions were flown on 24 days, with one air tracer release of cesium on 19 July 1975. The status of the analysis of all types of data is described.
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  • 51
    Monograph available for loan
    Monograph available for loan
    [Rockville, Md.] : U.S. Department of Commerce, National Oceanic and Atmospheric Administration, Office of Research and Development
    Call number: MOP 44980 / Mitte
    Type of Medium: Monograph available for loan
    Pages: ii, 73 Seiten , Illustrationen , 27 cm
    Language: English
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  • 52
    Call number: MOP 45353 / MItte
    In: Developments in atmospheric science, 9
    Type of Medium: Monograph available for loan
    Pages: 327 Seiten , Illustrationen
    ISBN: 0444417486
    Series Statement: Developments in atmospheric science 9
    Language: English
    Note: CONTENTS Preface CONFERENCE SUMMARY / A. L. Fymat TEMPERATURE SOUNDING INVERSION METHODS AND THE OBSOLESCENCE OF DIFFERENTIAL EQUATIONS FOR SPECIFYING PHYSICAL OBSERVABLES / J. I. F. King SOME EXPERIMENTS ON THE EFFECT OF REMOTE SOUNDING TEMPERATURES UPON WEATHER FORECASTING / M. Halem, M. Ghil and R. Atlas NONLINEAR INVERSION: THEORY AND PRAXIS / J. I. F. King A NEW TREATMENT OF THE BOUNDARY TERM IN THE INVERSION OF THE RADIATIVE TRANSFER EQUATION / H. E. Fleming and D. S. Crosby EVALUATION OF ERRORS IN DERIVED CLEAR COLUMN RADIANCES / L. McMillin RECURSIVE FILTERING OF RADIANCE DATA FROM NIMBUS-E SATELLITE / I. A. Ismail DEPENDENCE OF THE TEMPERATURE DEVIATION OF THE OCEAN SURFACE AS MEASURED BY SATELLITE ON THE SIZE DISTRIBUTION OF AEROSOLS / T. Takashima THE DETERMINATION OF ATMOSPHERIC TEMPERATURE PROFILES FROM INFRARED INTERFEROMETER MEASUREMENTS ON BOARD OF METEOR-25 / V. A. Golovko and D. Spänkuch COMPOSITION SOUNDING GLOBAL TOTAL OZONE DETERMINATION FROM NIMBUS 4 BUV SPACECRAFT DATA / A. J. Fleig, R. S. Fraser, B. W. Guenther, D. F. Heath, E. Hilsenrath, L. V. Novak, V. G. Kaveeshwar, R. D. McPeters, C. L. Mateer and A. G. Miller INFORMATION CONTENT AND RESULTS OF NON-LINEAR INVERSION OF NIMBUS 6 LIMB RADIANCE INVERSION RADIOMETER DATA / J. C. Gille and P. L. Bailey AN APPROXIMATE METHOD FOR NONLINEAR INVERSION OF LIMB RADIANCE OBSERVATIONS / P. L. Bailey and J. C. Gille A NONLINEAR TECHNIQUE FOR INVERTING LIMB ABSORPTION PROFILES / J. D. Mill and S. R. Drayson SENSITIVITY OF THE INVERSION OF LIMB RADIANCE MEASUREMENTS IN THE 6.3μm WATER VAPOR BAND / H. Fischer AN ANALYSIS OF NIMBUS-V THIR 6-7 μm OBSERVATIONS OVER THE MEDITERRANEAN SEA / M. Roulleau MICROWAVE GROUND-BASED DETERMINATION OF ATMOSPHERIC TOTAL WATER CONTENT / G. G. Shchukin and L. P. Bobylev A SOLAR HETERODYNE RADIOMETER FOR THE DETERMINATION OF THE ALTITUDINAL PROFILES OF ATMOSPHERIC GASES / V. I. Astakhov, N. V. Vanin, V. V. Galaktionov, V. M. Dorokhov, V. M. Zakharovand V. U. Khattatov PASSIVE REMOTE SENSING IN THE PRESENCE OF MULTIPLE SCATTERING: A NUMERICAL INVERSION METHOD / B. R. Barkstrom PARTICULATE SOUNDING RECONSTRUCTING THE SIZE DISTRIBUTION OF SPHERICAL PARTICLES FROM ANGULAR FORWARD SCATTERING DATA / A. L. Fymat and K. D. Mease COMPLEX REFRACTIVE INDEX OF ATMOSPHERIC AEROSOLS: A SIZE DISTRIBUTION INDEPENDENT RETRIEVAL APPROACH USING MULTISPECTRAL TRANSMISSION RATIOS / A. L. Fymat and K. D. Mease THE METHOD OF MULTIFREQUENCY LASER SOUNDING OF ATMOSPHERIC AEROSOL MICROSTRUCTURE / V. E. Zuev and I. E. Naats LASER SOUNDING OF THE ATMOSPHERE USING AEROSOL SCATTERING / V. E. Zuev STRATOSPHERIC AEROSOL LAYERS MONITORED BY LIDAR / R. Reiter, H. Jaeger, W. Carnuth and M. Littfass LIDAR DETECTION OF ATMOSPHERIC CONTAMINANTS BY RAMAN SCATTERING AND FLUORESCENCE SPECTRA / V. M. Zakharov and V. A. Torgovichev REMOTE SENSING OF CLOUD PROPERTIES FROM NIMBUS 5 / D. J. McCleese THE ATMOSPHERIC BLURRING EFFECT OF REMOTELY SENSED EARTH IMAGERY / S. Ueno, Y. Haba, Y. Kawata, T. Kusaka and Y. Terashita Author Index Subject Index
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  • 53
    Monograph available for loan
    Monograph available for loan
    Greenbelt, Md. : National Space Science Data Center
    Call number: MOP 47091 / Mitte
    Type of Medium: Monograph available for loan
    Language: English
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  • 54
    Call number: MOP 44739 / Mitte
    Type of Medium: Monograph available for loan
    Pages: xi, 76 Seiten , 28 cm
    Language: English
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  • 55
    Monograph available for loan
    Monograph available for loan
    Berlin [.a.] : Springer
    Associated volumes
    Call number: 9939
    In: Crystal chemistry of non-metallic materials
    Type of Medium: Monograph available for loan
    Pages: IX, 234 Seiten , Illustrationen
    ISBN: 3540071245 , 0387071245
    Series Statement: Crystal chemistry of non-metallic materials 2
    Language: English
    Location: Upper compact magazine
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  • 56
    Monograph available for loan
    Monograph available for loan
    Washington : Special Committee for Solar-Terrestrial Physics (SCOSTEP), National Academy of Sciences
    Call number: MOP 43858/1 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 142 Seiten , Illustrationen , 28 cm
    Language: English
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  • 57
    Monograph available for loan
    Monograph available for loan
    Washington : Special Committee for Solar-Terrestrial Physics (SCOSTEP), National Academy of Sciences
    Call number: MOP 43858/2 / Mitte
    Type of Medium: Monograph available for loan
    Pages: II, 146 Seiten
    Language: English
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  • 58
    Monograph available for loan
    Monograph available for loan
    Washington : Special Committee for Solar-Terrestrial Physics (SCOSTEP), National Academy of Sciences
    Call number: MOP 43858/3 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 132 Seiten , 28 cm
    Language: English
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  • 59
    Call number: MR 22.94902
    In: Special publication / The Geochemical Society, 6
    Type of Medium: Monograph available for loan
    Pages: XII, 322 Seiten , Illustrationen, graphische Darstellungen
    ISBN: 0-941809-05-6
    Series Statement: Special publication / The Geochemical Society No. 6
    Language: English
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  • 60
    Series available for loan
    Series available for loan
    Boulder, Colo. : The Geological Society of America
    Associated volumes
    Call number: S 90.0095(180)
    In: Special paper / The Geological Society of America, 180
    Type of Medium: Series available for loan
    Pages: 211 Seiten , Illustrationen, graphische Darstellungen
    ISBN: 0-8137-2180-6
    Series Statement: Special paper / The Geological Society of America 180
    Language: English
    Note: Introduction / Charles E. Chapin and Wolfgang E. Elston References cited Ash-flow magmatism / Robert L. Smith Abstract Introduction Volumes of ash-flow sheets Size of magma chambers Zoned magma chambers Crater Lake, Oregon Bandelier Tuff, New Mexico SiO₂ and phenocryst variation in ash-flow sheets Periodicity-volume-composition relationships Discussion of model Summary and conclusions Acknowledgments References cited Cooling units and composite sheets in relation to caldera structure / Robert L. Christiansen Abstract Introduction Examples of ash-flow-caldera relations Mazama eruption and Crater Lake caldera Bandelier Tuff and Valles-Toledo calderas Thirsty Canyon Tuff and Black Mountain caldera Timber Mountain-Oasis Valley caldera complex Yellowstone Plateau volcanic field General pattern of ash-flow-caldera relations Acknowledgments References cited The Bishop Tuff: Evidence for the origin of compositional zonation in silicic magma chambers / Wes Hildreth Abstract Introduction Eruptive sequence Major units Units of uncertain correlation Summary of eruptive sequence Eruptive temperatures Accuracy and precision of T-fₒ₂ data Mineralogy Fe-Ti oxides Quartz Sanidine Plagioclase Biotite Pyroxenes Allanite Zircon Apatite Pyrrhotite Whole-rock chemistry Major elements Trace elements Compositional gaps Origin of the compositional zonation Crystal settling Assimilation Basaltic underplating Liquid immiscibility Progressive partial melting Trace elements during partial melting Convection-driven thermogravitational diffusion Lines of evidence Concluding remarks Acknowledgments References cited Rare-earth-element content of some highly differentiated ash-flow tuffs and lavas / Donald C. Noble, Ward L. Rigot, and Harry R. Bowman Abstract Introduction Specimens studied and methods of chemical analysis Results and discussion Acknowledgments References cited Geochemistry of the Los Chocoyos Ash, Quezaltenango Valley, Guatemala / William I. Rose, Jr., Norman K. Grant, and John Easter Abstract Introduction Field description Geochemistry Mineralogy and mineral chemistry Sr-isotope data Modeling of crystal fractionation Time required for crystal fractionation Conclusions Acknowledgments Appendix 1. Analytical methods References cited Geochemical correlation of genetically related rhyolitic ash-flow and air-fall ashes, central and western Guatemala and the equatorial Pacific / Gregory A. Hahn, William I. Rose, Jr., and Thomas Meyers Abstract Introduction Previous investigations of chemical fingerprinting The Los Chocoyos Ash and the stratigraphic sequence of the San Cristobal Group Characteristics of the ash-flow member Sample acquisition and preparation Trace-element analyses Chemical correlation Lateral chemical variations Source of the Los Chocoyos Ash Age of the Los Chocoyos Ash Conclusions Acknowledgments References cited Ignimbrites of the Sierra Madre Occidental and their relation to the tectonic history of western Mexico / Fred W. McDowell and Stephen E. Clabaugh Abstract Introduction Volcanic stratigraphy of the Sierra Madre Occidental Pre-Cretaceous volcanic rocks Lower volcanic complex Unconformity between the igneous sequences Upper volcanic supergroup Calderas of the upper volcanic supergroup Structure of the Sierra Madre Occidental Chemistry Tectonic relationships Acknowledgments References cited Emplacement of pyroclastic flows: A review / Michael F. Sheridan Abstract Introduction Eruptions Observed pyroclastic flows Theoretical eruption models Mobility Topographic barriers Energy line Deposits Morphology Depositional sequence Textures Large clasts Deflation Compositional variation Welded peralkaline ignimbrites Emplacement temperatures Models Fluidization Speculation Summary Acknowledgments References cited Primary and secondary flow structures in ash-flow tuffs of the Gribbles Run paleovalley, central Colorado / Charles E. Chapin and Gary R. Lowell Abstract Introduction Paleovalleys and the Wall Mountain Tuff Primary flow structures Gas cavities (lenticules) Lineation Foliation Primary folds Rotated lithic fragments Imbricated crystals Secondary now structures Secondary folds and growth faults Tension cracks Miscellaneous structures Steam spiracles Conclusions Acknowledgments References cited Welded air-fall tuffs / R.S.J. Sparks and J. V. Wright Abstract Introduction Field relationships Santorini, Greece The 1875 Askja welded tuffs, Iceland Other examples Petrology and chemistry Grain-size studies Santorini welded tuffs Askja welded tuff Compaction and welding Strain, bulk density, and porosity measurements Results for Santorini welded tuffs Results for Askja welded tuff Discussion Acknowledgments References cited Globule ignimbrite of Mount Suswa, Kenya / R. L. Hay, W. Hildreth, and R. N. Lambe Abstract Introduction Scope and purpose of study Geologic setting and previous work Description and field relationships Ignimbrite petrography Vitric materials Crystals and rock fragments Devitrification and gas-phase crystallization Low-temperature alteration Nature of lower ignimbrite sheet Nature of the magma Chemical composition Temperature and viscosity Emplacement of ignimbrite and origin of globules Acknowledgments References cited A model of pyroclastic surge / K. H. Wohletz and M. F. Sheridan Abstract Introduction Terminology Objectives and methods of study Deposits Bed forms Locations Results Pyroclastic-surge facies Discussion and conclusions Development of bed forms Reconstruction of the surge cloud A model of pyroclastic surge: Its fluidization and deflation Acknowledgments References cited Significance of the flattening of pumice fragments in ash-flow tuffs / Donald W. Peterson Abstract Introduction Pumice fragments in the Apache Leap Tuff Recognition and description of pumice fragments Flattening of the pumice Applications of the flattening studies Recognition of cooling units Implications of extreme flattening Determination of stratigraphic level and fault displacement Commercial application of flattening ratios Determination of the degree of welding Pumice flattening as a possible guide to relative temperature of emplacement and rate of accumulation Conclusions Acknowledgments References cited Ash-flow sheets and calderas: Their genetic relationship to ore deposits in Nevada / Edwin H. McKee Abstract Introduction Metal deposits in volcanic-tectonic systems Resurgent cauldrons Geologic setting Parameters of study Distribution of mines and ash-flow sheets Distribution of mines and calderas Discussion Acknowledgments References cited
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  • 61
    Monograph available for loan
    Monograph available for loan
    Sankt.Peterburg : Izdatel'stvo "Mir i Sem'ja 95", Glavnoe Agentstvo Vozdušnych Soobščenij Rossijskoj Federacii
    Call number: AWI Bio-23-95317
    Type of Medium: Monograph available for loan
    Pages: 119 Seiten , Illustrationen , 1 Beilage
    ISBN: 5-90016-27-1
    Language: Russian , English , French
    Note: Zum Teil in kyrillischer Schrift. , Text in russischer, englischer und französischer Sprache
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  • 62
    Series available for loan
    Series available for loan
    Ås : Agricultural University of Norway, Department of Soil and Water Sciences
    Call number: AWI G3-23-95008
    Type of Medium: Series available for loan
    Pages: viii, 136 Seiten , Illustrationen , 24 cm
    ISBN: 82-575-0394-0 , 8257503940
    ISSN: 0802-3220
    Series Statement: Doctor scientiarum theses / Norges Landbruskhøgskole 1999:19
    Language: English
    Note: Zugleich: Dissertation, Norges landbrukshøgskole, 1999 , Englisch
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  • 63
    Call number: AWI P5-23-95010
    Type of Medium: Monograph available for loan
    Pages: VI, 54 Seiten , Illustrationen , 28 cm
    Language: English
    Note: Table of Contents Foreword The Global Context The Arctic in a Global Context The ARCSS Program The Arctic System Science (ARCSS) Program The Scientific Goals of the ARCSS Program ARCSS Objectives Significant Research and Findings of the ARCSS Program ARCSS Program Research Implementation of ARCSS Program Research ARCSS Program Components Paleoenvironmental Studies Greenland Ice Sheet Project Two (GISP2) Paleoclimates of Arctic Lakes and Estuaries (PALE) Ocean-Atmosphere-Ice Interactions (OAII) Land-Atmosphere-Ice Interactions (LAII) Integrative Studies Synthesis, Integration, and Modeling Studies (SIMS) New Initiatives Human Dimensions of the Arctic System (HARC) Russian-American Initiative on Shelf-Land Environments in the Arctic (RAISE) International Collaboration The Future of the ARCSS Program Priorities for the Future Research Questions Integrative Strategies Community Coordination and Integration Coordination and Integration Logistics Support Working with Arctic Residents Community Planning and Science Management ARCSS Committee Science Steering Committees Periodic Meetings of ARCSS Principal Investigators Appendices ARCSS Program Contact Information A History of ARCSS Program Development ARCSS Data Protocol References and Relevant Reports Contributors and Reviewers
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  • 64
    Monograph available for loan
    Monograph available for loan
    Amsterdam [u.a.] : Elsevier
    Call number: 11775
    Type of Medium: Monograph available for loan
    Pages: 248 Seiten , Illustrationen
    ISBN: 0444998500
    Series Statement: Czechoslovak Academy of Sciences
    Language: English
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  • 65
    Monograph available for loan
    Monograph available for loan
    Chichester [u.a.] : Wiley
    Call number: M 98.0415 ; M 98.0543
    Type of Medium: Monograph available for loan
    Pages: viii, 342 S.
    ISBN: 0471955175
    Series Statement: Wiley series in materials, modelling and computing
    Classification:
    Petrophysics
    Language: English
    Location: Upper compact magazine
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  • 66
    Call number: M 98.0433
    Type of Medium: Monograph available for loan
    Pages: V, 116 S.
    ISBN: 3930108054
    Classification:
    Seismology
    Language: English
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  • 67
    Monograph available for loan
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    Noordwijk : ESA Publications Division
    Call number: M 98.0463
    Type of Medium: Monograph available for loan
    Pages: vi, 189 S.
    Classification:
    A.0.9.
    Language: English
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  • 68
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    Monograph available for loan
    Cambridge : Cambridge Univ. Press
    Call number: M 98.0484
    Type of Medium: Monograph available for loan
    Pages: xiv, 273 S.
    ISBN: 0521561051
    Series Statement: Cambridge solid state science series
    Classification:
    C.5.2.
    Language: English
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  • 69
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    Monograph available for loan
    Dordrecht [u.a.] : Kluwer
    Call number: 8/M 98.0475
    Type of Medium: Monograph available for loan
    Pages: S. 101-300
    ISBN: 0792350340
    Classification:
    B.1.2.
    Language: English
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  • 70
    Monograph available for loan
    Monograph available for loan
    Cambridge [u.a.] : Cambridge Univ. Press
    Call number: 19/M 98.0482 ; AWI S1-98-0189
    Type of Medium: Monograph available for loan
    Pages: xix, 1008 S.
    ISBN: 052155506X
    Classification:
    C.1.9.
    Language: English
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  • 71
    Call number: S 91.0379(6)
    In: Hallesches Jahrbuch für Geowissenschaften. Reihe B, Geologie, Paläontologie, Mineralogie. Beiheft
    Type of Medium: Series available for loan
    Pages: 250 S.
    Series Statement: Hallesches Jahrbuch für Geowissenschaften. Reihe B, Geologie, Paläontologie, Mineralogie : Beiheft 6
    Classification:
    Historical Geology
    Language: English
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  • 72
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    Amsterdam [u.a.] : Elsevier
    Associated volumes
    Call number: 5/M 98.0499
    In: Handbook of geophysical exploration
    Type of Medium: Monograph available for loan
    Pages: xii, 391 S.
    ISBN: 0080431976
    Series Statement: Handbook of geophysical exploration : seismic exploration 19
    Classification:
    Geophysical Exploration, Geophysical Prospecting
    Language: English
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  • 73
    Call number: ZSP-387-9
    In: International project on paleolimnology and late cenozoic climate
    Type of Medium: Series available for loan
    Pages: 128 S. : Ill., graph. Darst.
    Language: English
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  • 74
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    Monograph available for loan
    Potsdam
    Associated volumes
    Call number: AR 98/31-1
    In: 1998 IERS Workshop
    Type of Medium: Monograph available for loan
    Pages: 16 S.
    Classification:
    A.1.1.
    Language: English
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  • 75
    Call number: 21/STR 98/19
    In: Scientific technical report
    Type of Medium: Monograph available for loan
    Pages: 27 S. : graph. Darst.
    Series Statement: Scientific Technical Report / Geoforschungszentrum Potsdam 98/19
    Classification:
    Geodetic Theory and Modeling
    Language: English
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  • 76
    Call number: ZSP-387-12
    In: International project on paleolimnology and late cenozoic climate
    Type of Medium: Series available for loan
    Pages: 128 S. : Ill., graph. Darst.
    Language: English
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  • 77
    Call number: AR 98/20
    Classification:
    Geochemistry
    Language: English
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  • 78
    Monograph available for loan
    Monograph available for loan
    Montreal [u.a.] : McGill-Queen's Univ. Press
    Call number: PIK N 630-11-0268 ; AWI Bio-17-17112
    Type of Medium: Monograph available for loan
    Pages: XVIII, 361 S. : Ill., graph. Darst., Kt.
    ISBN: 0773512411
    Language: English
    Note: Contents: Figures. - Tables. - Preface. - Illustrations. - 1. Introduction. - 1.1 Background. - 1.2 Scope of the text. - 1.3 World vegetation types. - 1.3.1 Vegetation formations and zones. - 1.3.2 Zonobiomes. - 1.3.3 Exoclimates. - 1.3.4 The Canadian vegetation classification system. - 1.3.5 Ecozones. - 1.3.6 Floristic realms. - 1.3.7 Plant species nomenclature. - 1.4 Soil classification and soil systems. - 1.5 Climatic parameters. - 1.5.1 The role of climate. - 1.5.2 Moisture indices. - 1.5.3 Climate diagrams. - 1.6 Plant strategies. - 1.6.1 Competition. - 1.6.2 Hydrature and moisture regulation. - 1.6.3 Life forms. - 1.6.4 Leaf morphology and adaptation. - 1.7 Biomass and net primary productivity. - 2. Tundra 2.1 Tundra distribution. - 2.2 Climate. - 2.3 Soils. - 2.4 Tundra in North America. - 2.4.1 Ecoclimatic sub-provinces and regions. - 2.4.2 High and mid-Arctic. - 2.4.3 Low Arctic. - 2.5 Tundra in other Northern Hemisphere locations. - 2.5.1 Arctic Tundra. - 2.5.2 Typical Tundra. - 2.5.3 Southern Tundra. - 2.5.4 Tundra on Arctic Islands. - 2.6 Tundea in the Southern Hemisphere. - 2.6.1 The Antarctic Subregion. - 2.6.2 The Sub-Antarctic Subregion. - 2.7 Alpine Tundra. - 2.7.1 Temperate-latitude alpine Tundra. - 2.7.2 Low-latitude (equatorial) alpine Tundra. - 2.8 Primary production and phytomass in Tundra. - 3. Forest-Tundra or Boreal-Tundra Ecotone. - 3.1 Definitions. - 3.2 Distribution. - 3.3 Climate. - 3.4 Soils. - 3.5 Forest-Tundra in Canada. - 3.5.1 Ecoclimatic sub-provinces. - 3.5.2 The shrub subzone (Northern Forest-Tundra). - 3.5.3 The forest subzone (Southern Forest Tundra). - 3.6 Eurasian Forest-Tundra. - 3.7 Primary production and phytomass in forest-Tundra. - 4. Boreal Forest (Taiga) and Mixed Forest Transition. - 4.1 Distribution. - 4.2 Climate. - 4.3 Soils. - 4.4 Boreal forest in North America. - 4.4.1 Open Lichen Woodland. - 4.4.2 Northern Coniferous Forest. - 4.4.3 Mixed-Forest (Boreal-Broadleaf ecotone). - 4.4.4 Mixed-Forest transition to grassland (Northern Mixedwoods). - 4.5 Eurasian Boreal. - 4.5.1 The European Boreal. - 4.5.2 The Siberian Boreal. - 4.5.3 Northwest Pacific Fringe Boreal. - 4.6 Primary production and phytomass in boreal forest. - 5. Prairie (Steppe). - 5.1 Distribution. - 5.2 Climate. - 5.2.1 North America. - 5.2.2 Climate in Eurasia and elsewhere. - 5.3 Soils. - 5.4 Prairie in North America. - 5.4.1 The Canadian Prairie. - 5.4.2 Prairie in the USA. - 5.5. Eurasian Steppe. - 5.6 Southern Hemisphere Grasslands. - 5.6.1 The High Veldt. - 5.6.2 The Pampas/Campos Grasslands. - 5.7 Primary production and biomass. - 6. Cordilleran Environments in Western North America. - 6.1 Canada's Cordilleran ecoclimatic provinces. - 6.1.1 Distribution. - 6.1.2 Climate. - 6.1.3 Soils. - 6.1.4 Pacific Coastal Mesothermal Forest. - 6.1.5 Pacific Coastal Subalpine Forest. - 6.1.6 Cordilleran Forest Region. - 6.1.7 Cordilleran Cold Steppe and Savanna Forst. - 6.1.8 Canadian Cordilleran Subalpine Forest. - 6.1.9 Alpine Tundra and Boreal Forest. - 6.2 The Cordilleran Region in the USA. - 6.2.1 Distribution. - 6.2.2 Northwest Coast Conifer-Hardwood Forests. - 6.2.3 Montane Pine Forests. - 6.2.4 Sagebrush and Grasslands. - 6.2.5 Interior Hemlock-Douglas-Fir-Larch. - 6.2.6 Subalpine Forest. - 6.3 Primary Production and Phytomass. - 7. Temperate Deciduous Forests. - 7.1 Distribution. - 7.2 Climate. - 7.3 Soils. - 7.4 Temperate Deciduous Forest in North America. - 7.4.1 Canada. - 7.4.2 United States of America. - 7.4.3 Southern Mexico and South America. - 7.5 Europe. - 7.5.1 Atlantic Deciduous Forest. - 7.5.2 Central European Deciduous Forest. - 7.5.3 East European Deciduous Forest. - 7.6 Asia. - 7.7 Southern Hemisphere. - 7.8 Primary Production and Phytomass. - 8. Wetlands. - 8.1 Introduction. - 8.2 Climate. - 8.3 Soils. - 8.4 Canadian Wetland Classification. - 8.4.1 Canadian Wetland Classification System. - 8.4.2 Wetland classes. - 8.4.3 Wetland forms and types. - 8.5 Canadian Wetlands. - 8.5.1 Arctic Wetlands. - 8.5.2 Subarctic Wetlands. - 8.5.3 Boreal Wetlands. - 8.5.4 Prairie Wetlands. - 8.5.5 Temperate Wetlands. - 8.5.6 Oceanic Wetlands. - 8.5.7 Mountain Wetlands. - 8.6 Wetlands in the USA. - 8.7 Eurasian Wetlands. - 8.7.1 European Wetlands. - 8.7.2 Asian Wetlands. - 8.8 Central and South American Wetlands. - 8.9 African Wetlands. - 8.10 Austromalesian and Pacific Wetlands. - 8.11 Phytomass and Primary Production. - 9. Conclusion. - Appendix: Biomials and their local names as used in the text. - Bibliography. - Index.
    Location: A 18 - must be ordered
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  • 79
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    Monograph available for loan
    Wrocław [u.a.] : Zakł. Nar. im. Ossolińskich
    Associated volumes
    Call number: MOP Per 116(113)
    In: Prace geograficzne
    Type of Medium: Monograph available for loan
    Pages: 112 S. : graph. Darst.
    Series Statement: Prace geograficzne 113
    Language: Polish
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  • 80
    Monograph available for loan
    Monograph available for loan
    London [u.a.] : Academic Press
    Call number: M 98.0230
    Type of Medium: Monograph available for loan
    Pages: 890 S.
    Edition: 9th print.
    ISBN: 0125649223
    Series Statement: Probability and mathematical statistics : a series of monographs and textbooks
    Classification:
    Geodynamics
    Language: English
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  • 81
    Series available for loan
    Series available for loan
    Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-342
    In: Research report / Cold Regions Research and Engineering Laboratory
    Description / Table of Contents: CONTENTS: Abstract. - Preface. - Introduction. - Experimental procedure. - Results. - Work-hardening effect. - Strain rate sensitivity of flow stress. - Discussion. - Conclusions. - Literature cited.
    Description / Table of Contents: Single crystals of high purity ice deformed by uniaxial compression on an Instron machine showed remarkable work-hardening after about 8% strain. By changing the strain rate during compression tests in the plastic region of the stress-strain curve, an apparent activation volume V* and a dislocation mobility exponent m were calculated from the strain rate sensitivity of flow stress. The large work-hardening and the rapid increase in the value of m beyond about 10% strain indicate that the plastic flow in this region is controlled by dislocation intersections and nonconservative motion of jogs.
    Type of Medium: Series available for loan
    Pages: iii, 11 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 342
    Language: English
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  • 82
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-336
    In: Research report
    Description / Table of Contents: CONTENTS: Abstract. - Preface. - Nomenclature. - Introduction. - Description of study. - Sample preparation. - Test equipment and procedure. - Discussion of results. - Stress-density relationship. - Effect of rate of deformation. - Effect of temperature. - Effect of initial snow density. - Stress-deformation relationship. - Summary and conclusions. - Microstructural analysis. - Introduction. - Analytical methods. - Results and discussion. - Conclusion. - Literature cited. - Anpendix: Test data.
    Description / Table of Contents: The effects of snow temperature, rate of deformation, and initial density on the stress vs density and stress vs deformation relationships were investigated in the pressure range of 0.1 to 75 bars. The rate of deformation in the range of 0.027 to 27 cm sec^-1 does not have a significant effect. A decrease in temperature in the range of 0° to -40°C increases the resistance to stress and deformation, the temperature effect increasing with applied pressure and initial density. The effect of initial density is significant. For any stress, an increase in the initial density results in an increase in the resulting density, particularly at low stress levels and at temperatures near 0°C. The texture of artificially compacted snow is significantly different from that of naturally compacted snow of the same density because of the very short recrystallization time period.
    Type of Medium: Series available for loan
    Pages: iv, 57 Seiten , Illustrations
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 336
    Language: English
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  • 83
    Series available for loan
    Series available for loan
    Hanover, NH : Corps of Engineers, U.S. Army, Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-334
    In: Research report
    Description / Table of Contents: CONTENTS: Abstract. - Preface. - List of symbols and associated dimensions. - Introduction and purpose. - Site characteristics. - Outline of study scheme. - Analysis. - Heat conduction to the drill hole. - Heat transfer between conduit wall and coolant. - Heat transfer between surface pipe and air. - Total heat extraction process. - Example calculations. - Estimate of basal water thickness and flow rates. - Summary of investigations of multiple-hole. - Literature cited.
    Description / Table of Contents: A scheme for cooling the lower portion of the edge of the Greenland ice sheet, which abuts a potential mining operation, is examined. The magnitude of cooling which may be accomplished by drilling a series of holes about the periphery of the mine site is determined as a function of hole size, spacing and time. Refrigeration is accomplished by pumping a coolant downhole in a central pipe, then uphole in an annulus between the pipe and hole wall, and then through a thin-walled pipe exposed to the surface climate above the ice sheet. It was found possible to achieve a temperature change in the ice of the order of -1°C with hole spacings and pumping requirements which are considered reasonable. Other effects are briefly examined and include an estimate of the basal water thickness and flow rates.
    Type of Medium: Series available for loan
    Pages: vii, 19 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 334
    Language: English
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  • 84
    Series available for loan
    Series available for loan
    Hanover, NH : Corps of Engineers, U.S. Army, Cold Regions Research and Engineering Laboratory,
    Associated volumes
    Call number: ZSP-202-329
    In: Research report
    Description / Table of Contents: CONTENTS: General Introduction. - Part I. Spatial and temporal variations in sea ice deformatfon. - Introduction. - Approach. - Site location and data collection procedures. - Data analysis. - Strain results. - Comparison of mesoscale deformation with macroscale deformation. - Nature of the ice pack rotation. - Conciusion. - Literature cited. - Part Il. Comparison of mesoscale strain measurements with linear drift theory predictions. - Introduction. - List of symbols. - Linear drift equations. - Ice drift solutions. - Comparison of theory with mesoscale measurements. - A more general linear constitutive law. - Conclusions. - Literature cited. - Appendix Relative magnitudes of differential drift forces. - Abstract.
    Description / Table of Contents: Measurements of mesoscale sea ice deformation over a region approximately 20 km in diameter were made over a five-week period in the spring of 1972 at the main AIDJEX camp in the Beaufort Sea. They have been analyzed to determine nonlinearities in the ice velocity field (due to the discrete small-scale nature of the ice pack), as well as a continuum mode of deformation represented by a least squares strain rate tensor and vorticity. The deformation rate time series between Julian day 88 and 113 exhibited net areal changes as large as 3% and deformation rates up to 0.16% per hour. In the principal axis coordinate system, the strain rate typically exhibited a much larger compression (or extension) along one axis than along the other. Persistent cycles at ~12-hour wavelengths were observed in the divergence rate. A comparison of the average residual error with the average strain rate magnitude indicated that strains measured on a scale of 10 km or greater can serve as a valid measure of the continuum motion of the sea ice. This conclusion is also substantiated by a comparison between the mesoscale deformation, and macroscale deformation measured over a ~100-km-diameter region. Vorticity calculations indicate that at low temporal frequencies ( 〈 0.04 hr^-1 ) the whole mesoscale array rotates essentially as an entity and consequently the low frequency vorticity can accurately be estimated from the rotation of a single floe. (Part I) A comparison of mesoscale strain measurements with the atmospheric pressure field and the wind velocity field indicated that the ice divergence rate and vorticity followed the local pressure and wind divergence with significant correlation. For low atmospheric pressures and converging winds, the divergence rate was negative with the vorticity being counterclockwise. The inverse behavior was observed for high pressures and diverging winds. This behavior agreed with predictions based upon the infinite boundary solution of a linearized drift theory in the absence of gradient current effects and using the constitutive law proposed by Glen for pack ice. The best least squares values of the constitutive law parameters [Eta] and [Zeta] were found to be given by ~10^12 kg sec^-1. Using typical divergence rates, these values yielded compressive stresses of the magnitude of 10^5 N m^-1, which are similar to values suggested by the Parmerter and Coon ridge model. In general, the infinite boundary solution of the linear drift equation indicates that in a low pressure region that is reasonably localized in space, the ice would be expected to converge for high compactness (winter) and diverge for low compactness (summer). Calculations were also carried out using a more general linear viscoelastic constitutive law that includes memory effects and that includes a generalized Hooke's law as well as the Glen law as special cases. A best fit of this more general calculation with strain measurements indicates, overall, a better agreement with viscous behavior than with elastic behavior, with the frequency behavior of the estimated "viscosities" similar to the Glen law behavior at temporal frequencies less than ~0.01 hr^-1 (Part II)
    Type of Medium: Series available for loan
    Pages: v, 37 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 329
    Language: English
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  • 85
    Series available for loan
    Series available for loan
    Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-341
    In: Research report
    Description / Table of Contents: CONTENTS: Abstract. - Preface. - Introduction. - Samples. - Collection. - Preparation. - Analytical methods. - Cations. - Lead, silicon and aluminum. - Sulfate. - Comparative analyses. - Results and discussion. - Sea salt and terrestrial dust. - Sulfate. - Lead. - Summary and conclusions. - Literature cited. - Appendix A. Concentrations of chemical constituents in Dye 3 snow and ice strata.
    Description / Table of Contents: Concentrations of sodium, potassium, magnesium, calcium, silicon, aluminum, lead and sulfate were measured in surface snow and in individual annual accumulation layers from a 373-m-deep ice core from Dye 3, Greenland, covering the time period from 1232 to 1971 A.D. Average background (pre-1840) concentrations in micrograms/liter are: Na, 12.9 ± 9.3; K, 2.2 ± 2.1; Mg, 1.5 ± 1.0; Ca, 4.8 ± 2.4; Si, 12 ± 6; Al, 3.3 ± 1.4; Pb, 0.07 ± 0.06; and SO4, 56 ± 22. Deviations are due mainly to the variability of the concentrations in the samples deposited over the stated time interval rather than analytical precision. Observed concentrations of sodium, potassium, magnesium, calcium, silicon and aluminum can be adequately explained by relative abundances of these elements in seawater andterrestrial dust. Late 19th century annual ice layers contain twice as much sulfate as pre-1840 deposits, reflecting the increased use of fossil fuels in the Northern Hemisphere. Lead concentrations in post-1955 snow deposits are more than an order of magnitude greater than pre-1840 baseline concentrations and are attributed to smelting and the increased use of lead alkyls in gasoline.
    Type of Medium: Series available for loan
    Pages: v, 18 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 341
    Language: English
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  • 86
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-340
    In: Research report
    Description / Table of Contents: CONTENTS: Abstract. - Preface. - Nomenclature. - Introduction. - Theory. - Application. - Literature cited. - Appendix.
    Description / Table of Contents: The equations describing water movement in a dry snow cover are derived and examples of flow through ripe, refrozen and fresh snows are given. The grain size of snow has a large effect on the timing of water discharge. Water is retained by dry snow to raise its temperature and satisfy the irreducible water saturation. These requirements delay and reduce runoff following rain on dry snow.
    Type of Medium: Series available for loan
    Pages: iv, 13 S. : graph. Darst.
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 340
    Language: English
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  • 87
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-339
    In: Research report
    Description / Table of Contents: CONTENTS: Abstract. - Preface. - Introduction. - Analytical procedures. - Thick section analysis. - Measurements of inclusion pressure. - Gas volume measurements. - Density and porosity measurements. - Results and discussion. - Sizes, shapes and distributions of bubbles. - Sizes, shapes and distributions of cavities. - Inclusion abundances. - Gas pressures in bubbles and cavities. - Total gas content. - Case for lattice diffusion. - Literature cited.
    Description / Table of Contents: Cores obtained to the bottom of the Antarctic Ice Sheet at Byrd Station were used to analyze the physical properties of air bubbles trapped in the ice. These bubbles originate as pockets of air in the upper layers of snow and approximately 10 ml of air/100 cm^3 of ice; i.e., 10% by volume is retained permanently when the snow transforms into ice. Parameters measured were the sizes, shapes, abundances, spatial distributions, gas volumes and pressures of bubbles, and their variations with depth in the ice sheet. Bubbles occur abundantly in the top 800 m of ice but then gradually disappear until they can no longer be detected optically below 1100 m. This disappearance is not accompanied by any significant loss of air from the ice and all available evidence indicates that the air actually diffuses into the ice in response to increasing overburden pressure. The possibility exists that the dissolved gases are retained in the form of a gas hydrate or clathrate which, because of release of confining pressures, begins to decompose soon after ice cores are pulled to the surface. This decomposition is accompanied by the growth of gas-filled bubble-like cavities, and as much as 40% of the dissolved air has exsolved already from some cores in the space of less than three years. Bubble pressure measurements show that 1) bubbles with pressures exceeding about 16 bars begin to relax back to this value soon after in situ pressures are relieved by drilling, 2) further slow decompression occurs with time, and 3) the rate of decompression is controlled to some extent by the intrinsic structural properties of the ice and its thermal and deformational history. Only small variations were observed in the entrapped air content of the ice cores; they probably reflect variations in the temperature and/or pressure of the air at the time of its entrapment, but the data are not sufficient to draw any firm conclusions regarding past variations in ice sheet thickness. Only ice from the bottom 4.83 m was found to lack any detectable trace of air. Since this absence of air coincided precisely with the first appearance of stratified moraine in the cores, it is concluded that this ice originated from the refreezing of air-depleted water produced under pressure melting conditions at the bottom of the ice sheet.
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    Pages: v, 18 Seiten , Illlustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 339
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  • 88
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    Series available for loan
    Hanover, N.H. : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-349
    In: Research report / Cold Regions Research and Engineering Laboratory, 349
    Description / Table of Contents: CONTENTS: Abstract. - Preface. - Introduction. - Test locations. - Post Pond. - Mascoma Lake. - Winter freeze-up. - Ice cover properties. - Stratigraphy. - Microstructure. - Porosity. - Impurity content. - Flexural strength. - Test sites. - Beam test procedure. - Beam dimensions. - Beam temperatures. - Beam strengths. - Results. - Post Pond, Site PB, 12 February 1974. - Post Pond, Site PC, 21 February 1974. - Mascoma Lake, Site MD, 25 February 1974. - Mascoma Lake, Site MD, 26 February 1974. - Mascoma Lake, Site MD, 1 March 1974. - Post Pond, Site PA, 4 March 1974. - Post Pond, Site PA, 7 March 1974. - Post Pond, Site PA, 8 March 1974. - Post Pond, Site PB, 12 March 1974. - Post Pond, Midway between Sites PB and PC, 15 March 1974. - Post Pond, Midway between Sites PA and PB, 26 March 1974. - Post Pond, Midway between Sites PA and PB, 29 March 1974. - Post Pond, Midway between Sites PA and PB, 3 April 1974. - Conclusions. - Literature cited.
    Description / Table of Contents: In-place cantilever beam tests on Post Pond and Mascoma Lake ice yielded a maximum flexural strength of 7.1 kg/cm^2. The minimum strength, unrelated to failure along pre-existing cracks in the ice, was 2.9 kg/cm^2. The majority of tests were performed in the push-down mode after it was discovered that beams tested in the pull-up mode, which places the bottom surface in tension, frequently broke prematurely along cracks in the bottom of the ice. Premature failures of this kind usually occurred at stresses of 2-3 kg/cm^2. Data further demonstrate that the intrinsic strength of lake ice decreases significantly as the surface air temperature goes to 0°C. Ice that has just become isothermal, but has not yet begun to candle, has a strength of about 4 kg/cm^2; ice that has been subjected to prolonged periods of above-freezing air temperatures generally fails at about 3 kg/cm^2. Tests also show that cold unrecrystallized snow-ice is as strong as the underlying lake ice. Tests of the effect of crystalline structure indicate that ice composed of crystals with their c-axes horizontal is measurably stronger than ice in which the crystals are oriented with their c-axes vertical.
    Type of Medium: Series available for loan
    Pages: v, 28 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 349
    Language: English
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  • 89
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    Series available for loan
    Hanover, N.H. : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-350
    In: Research report / Cold Regions Research and Engineering Laboratory, 350
    Type of Medium: Series available for loan
    Pages: iv, 27 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 350
    Language: English
    Note: CONTENTS: Abstract. - Preface. - Introduction. - Sample preparation. - Apparatus and testing procedure. - Test results. - Uniaxial strength. - Initial tangent and 50% strength moduli. - Specific energy. - Discussion. - Testing method. - Compressive strength. - Tensile strength. - Ductile and brittle fracture.. - Initial tangent and 50% stress moduli. - Specific energy. - Conclusions and recommendations. - References. - Appendix A: Description of soil and calculations. - Appendix B: Description of the LVDT and averaging circuits. - Appendix C: Determination of strain in the neck section of a dumbbell specimen.
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  • 90
    Call number: ZSP-202-337
    In: Research report
    Description / Table of Contents: Contents: Introduction. - Surface ice observations. - Imagery interpretation. - Side-looking airborne radar. - Infrared. - Conclusions. - Literature cited.
    Description / Table of Contents: Ice conditions during mid-January 1974 in the Gulf of St. Lawrence and in the estuaty as far upstream as Rimouski are described utilitizing side-looking airborne radar, infrared and photographic imagery. The interpretations were verified by simultaneous surface observations on the ice by investigators operating from the CSS Dawson. The ice examined was undergoing rapid drift and deformation and showed a wide variety of thin ice (0-40 cm) features formed under the influence of strong winds and currents. These observations should serve as a guide in interpreting ice conditions in similar areas where ground truth data are not available.
    Type of Medium: Series available for loan
    Pages: 41 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 337
    Language: English
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  • 91
    Series available for loan
    Series available for loan
    Hanover, NH : Corps of Engineers, U.S. Army, Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-202-333
    In: Research report
    Description / Table of Contents: CONTENTS: Preface. - Introduction. - Analogy method. - Method based on the bending theory of elastic plates and the criterion [Sigma]max = [Sigma]f. - Methods based on viscoelastic theories. - Methods based on the yield line theory or limit analysis. - Comparison of analytical and test results. - General remarks. - Effect of bending and shearing forces on deflection of an ice cover. - Determination of Pf(O). - Determination of Pf(t). - Determination of [Sigma]f. - Summary and recommendations. - Literature cited.
    Description / Table of Contents: This report contains a critical survey of the literature on the bearing capacity of floating ice plates. It consists of a discussion of general questions, a critical survey of analytical attempts to determine the bearing capacity of floating ice plates, and a survey of field and laboratory tests on floating ice plates and their relation to the analytical results. The paper concludes with a systematic summary of the results, a discussion of observed shortcomings, and suggestions for needed investigations.
    Type of Medium: Series available for loan
    Pages: iv, 43 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 333
    Language: English
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  • 92
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/42
    In: CRREL Report, 76-42
    Description / Table of Contents: A study of arching of mixed, square fragmented ice floes at an opening in an ice boom is documented, using results from a model study in which two sizes of plastic blocks represented real ice. A power function, relating the upstream ice concentration to the ratio of a characteristic block dimension to the gap opening, is found adequate to distinguish between arching and nonarching events for block mixtures of two component sizes. It is demonstrated that when the respective total areas of the two block components are nearly equal, a minimum ice concentration initiates an arch across the opening. As the mixture of two sizes of blocks approaches a uniform (one-sized) mixture, a higher concentration of ice is needed to initiate the arch. When the ratio of the block dimension to the gap opening is equal to or less than 0.10, arching of the fragmented ice is not possible, even when the upstream ice discharge exceeds the maximum discharge of ice through a gap opening. The distribution of fragmented ice areas is an important parameter in establishing the minimum size of opening at which an ice boom will retain its arching capability.
    Type of Medium: Series available for loan
    Pages: iv, 17 Seiten , Illustrationen
    Series Statement: CRREL Report 76-42
    Language: English
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  • 93
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/45
    In: CRREL Report, 76-45
    Description / Table of Contents: The maneuverability of air cushion vehicles can become a serious operational problem when the vehicle's travel route is restricted by obstacles, slopes or cross-wind conditions, or when close-quarter turns are required. While improvement and perfection of aerodynamic methods may be a more desirable approach, there is a practical limit to these methods, and the use of ground contact devices requires consideration for providing more positive directional control. Wheels deserve special attention, and therefore are analyzed in more detail because of their obvious application on a variety of land terrains. Brake rods and harrows are more suitable on water, ice and snow. The saucer-shaped ground contact device would cause the least ecological impact on fragile organic terrains such as tundra. Relative directional stability is evaluated in terms of the total yawing moments produced by wheel arrangements (single, dual, tandem), location on the vehicle, and operational modes (free-rolling, braked, or a combination of the two). The available moments are plotted against the yaw angle of the vehicle to determine the most effective operational mode with a particular wheel arrangement for any yaw condition. The analysis is limited to retractable devices which act as moment producing brakes or rollers and do not serve as either propulsion or load support aids. Controlled ground contract with skirt sections having special wearing surfaces may provide a suitable control method and would require the least significant change to the basic design of the vehicle or its components. The concept involves the use of an air flow control mechanism for deflating specific skirt sections.
    Type of Medium: Series available for loan
    Pages: vii, 15 Seiten , Illustrationen
    Series Statement: CRREL Report 76-45
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Conversion factors: U.S. customary to metric (SI) units of measurement Section I: Use of auxiliary devices for ACV control Introduction Discussion of wheels as a control device Dual wheels Single wheel Tandem wheels Application to existing ACV’s Other control devices Turning force Conclusions Section II: Use of flexible skirts for ACV control Introduction The flexible skirt as a control device Model tests Conclusions Literature cited
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  • 94
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-77/1
    In: CRREL Report, 77-1
    Description / Table of Contents: Studies of the growth history and structural characteristics of winter ice covers on two New Hampshire lakes are described. These investigations included measurements of ice cover thickness, characterization of the stratigraphic and crystalline structure of the ice, identification and classification of major ice types and measurements of electrolytic conductivity. The formation of cracks and flaws in the ice and their effects on the mechanical properties of the ice were also investigated. A method of correlating ice growth with surface wind and temperature measurement is described and the interrelationships of the various physical and mechanical properties of temperate lake ice covers are discussed.
    Type of Medium: Series available for loan
    Pages: v, 29 Seiten , Illustrationen
    Series Statement: CRREL Report 77-1
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Study areas Study methods Winter freeze-up Composition of ice cover Freezing degree day records and applications Evaluation of ice growth coefficient α Growth history and entrapped bubble stratigraphy Mechanical properties Electrolytic conductivity Literature cited
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  • 95
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-77/2
    In: CRREL Report, 77-2
    Description / Table of Contents: A computer program was developed for finding the d-c resistance to ground of two simple electrodes, a straight horizontal wire and a vertically driven rod. The objective of this study was to develop a rapid means of finding the resistance to ground of simple electrode types in arctic environments where a two-layer earth model, frozen and unfrozen ground, is applicable. The program can consider homogeneous as well as two-layer earth, and the length, diameter and position of the electrodes. The computations were performed first by dividing an electrode into several smaller segments. Next the electrostatic potential of each segment was computed at the center of the electrode for unit-applied current. The segment potentials were then summed to find the total resistance to ground. Some specific computations are presented in comparison with previous theoretical work of other authors. The following conclusions were made: 1) A maximum run time of 165 seconds is needed for all two-layer arctic models where (a) the depth of the upper layer does not exceed 10 m, (b) the vertical rod length is less than 30 m, or (c) the horizontal wire length is less than 100 m; 2) Best accuracy is obtained when rod and wire radii are less than 0.01 m; and 3) Coincidence of the center of the vertical electrode with the two-layer interface must be avoided.
    Type of Medium: Series available for loan
    Pages: iv, 16 Seiten , Illustrationen
    Series Statement: CRREL Report 77-2
    Language: English
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  • 96
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-77/3
    In: CRREL Report, 77-3
    Description / Table of Contents: Tests were conducted in uniaxial compression and tension to determine the effect of temperature on the strength of frozen Fairbanks silt. Test temperatures ranged from 0 C to -56.7 C. Two machine speeds, 4.23 cm/sec and 0.0423 cm/sec, were used for the constant displacement rate tests. From the highest to the lowest temperature, the compressive strength increased up to about one order of magnitude and the tensile strength increased one-half an order of magnitude. Equations are presented which correlate strength with temperature at the strain rates obtained. The initial tangent and 50% strength moduli and the specific energy are given for each test. The mode of fracture and the effects of unfrozen water content and ice matrix strengthening are discussed, and the test results are compared with the data of other investigations.
    Type of Medium: Series available for loan
    Pages: iv, 27 Seiten , Illustrationen
    Series Statement: CRREL Report 77-3
    Language: English
    Note: CONTENTS Abstract Preface Introduction Sample preparation Apparatus and testing procedure Test results Discussion Compressive strength Tensile strength Initial tangent and 50% stress moduli Specific energy Mode of failure Strength as a function of unfrozen water Thermal activation Conclusions and recommendations Literature cited
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  • 97
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-77/4
    In: CRREL Report, 77-4
    Description / Table of Contents: The ice booms on the St. Marys River at Sault Ste.Marie, Michigan and Ontario, were operated a second winter, 1976-77, under colder conditions, with less water flow, lower water levels, and 25% fewer ships in the river than during the previous year. The ice cover behind the booms remained frozen to shore for longer periods, and the loads registered in the booms were relatively unaffected by ship passages compared with the previous year's activity. As in the previous year, most structural load changes took place in the west ice boom and were due to movements of the ice cover immediately upstream of the boom. The cover broke free from shore on three occasions: the first and third occasions were minor events, but on the second occasion the cover cracked free, the timbers remained frozen to it, and the boom structure became damaged by the subsequent ice activity. Three anchor line assemblies broke over a period of about 4 hours; the two latter breaks occurred while a ship was operating in the ice. The first break was in an instrumented line and the measured load was unexpectedly low. The most important break was in the main shore anchor and this opened the boom. The maximum force at this anchor was estimated as less than 115 tons (1,023 kN). Some ice moved downstream without serious consequence and the boom was reconnected in two days. These events point out several factors to be considered in ice booms, such as designing the booms to withstand the action of the solid ice cover as well as the fragmented ice cover, keeping the structures and their assembly simple, and inspecting components and assemblies carefully.
    Type of Medium: Series available for loan
    Pages: vi, 26 Seiten , Illustrationen
    Series Statement: CRREL Report 77-4
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Ice boom basic principles General loading considerations Design ice areas Prediction of ice boom loads Summary Ice cover forces Ice barrier reaction force Ice forces in the structure Analytical relationships Design force summary Special features Extension of west ice boom Pipe restraint structure Diagonal anchor cables Measurement systems Measured anchor cable forces Data records Average and peak loads Ice activity on or about 1 February 1976 C3W cable forces Ship-induced leads Ice cover load check Conclusions Recommendations Literature cited Appendix A. St. Marys River ice booms test data
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  • 98
    Call number: AWI E3-19-92032
    Type of Medium: Monograph available for loan
    Pages: 7 Seiten , Illustrationen
    Language: English
    Note: Contents: 1. Introduction. - 2. Design of the existing base. - 3. Why a new concept. - 4. Considerations for a new base. - 5. Building alternatives for a floating ice shelf. - 6. Design criteria. - 7. Concept adopted. - 8. Technical data. - 9. Services. - 9.1. Electrical. - 9.2. Mechanical. - 9.3. Fire Protection. - 9.4. Toilets. - 10. Stores. - 11. External buildings. - 12. Conclusion.
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  • 99
    Monograph available for loan
    Monograph available for loan
    Copenhagen : [s.n.]
    Call number: AWI G7-19-92044
    Type of Medium: Monograph available for loan
    Pages: 75 Seiten , Illustrationen
    Language: English
    Note: CONTENTS: Flight plan 1999. - LC130 schedule. - NGRIP 1999 schedule. - Overview of 1999 schedule. - lnfo for August1998 meeting. - Quartering and buildings. - Number of field participants. - NGRIP 1999 sub programs. - SITREP. - Term of reference for the NGRIP field work. - Accidents and illness. - Mail to NGRIP participants. - Cargo shipments to Greenland. - Personnel transport 1999. - Booze and drugs. - Vacation in Greenland. - Shipping boxes. - Welcome to the NGRIP camp. - List of participants. - NG RIP camp load. - Kangerlussuaq and the surrounding area. - Thule Air Base, Greenland, Base Operations. - Uplift 1998. - Typical specifications for LC-130 and Twin Otter. - Useful data. - Coordination of C-130 in Kangerlussuaq. - Aviation weather reports. - Typical communication plan and frequencies used. - Phonetic alphabet. - Personal field equipment. - Operation of Thrane & Thrane STDC telex terminal. - Operation of NERA lnmarsat M terminal. - Map of NGRIP camp. - NGRIP inclined pit and trenches. - Map of NGRIP Region. - Map of Greenland and North Greenland. - Map of skiway. - Ice divide North of NGRIP. - Map of the magnetic declination in Greenland. - Glycol specification. - Density vs temperature of hole liquid. - Positions in Greenland, distances and directions. - List of NGRIP addresses.
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  • 100
    Monograph available for loan
    Monograph available for loan
    Copenhagen : [s.n.]
    Call number: AWI G7-19-92046
    Type of Medium: Monograph available for loan
    Pages: 64 Seiten , Illustrationen
    Language: English
    Note: CONTENTS: Flight plan 1996. - C130 schedule. - NGRIP 1996 Schedule. - Overview of 1996 schedule. - Camp Layout. - Buildings. - Number of field participants. - NGRIP 1996 Sub programs. - CARDS Radar test. - KMS Elevation measurements. - SITREP. - Terms of Reference during the field operation. - Accidents and Illness. - Mail to NGRIP participants. - Cargo shipments to Greenland. - Personnel transport 1996. - Booze and drugs. - Vacation in Greenland. - Shipping boxes. - Welcome to the NGRIP camp. - List of participants. - NGRIP camp load. - Kangerlussuaq and Surrounding Area. - Thule Air Base, Greenland, Base Operations. - Other useful information for Thule passengers. - Uplift 1996. - Typical specs for LC-130 and Twin Otter. - Useful data. - Coordination of C-130 in Kangerlussuaq. - Aviation weather reports. - Typical communication plan. - Summary of frequencies used in Greenland. - Phonetic alphabet. - Personal field equipment. - Map of GRIP camp. - NGRIP, Maps of one and two line set up. - NGRIP trenches. - Map of Greenland. - Map of north Greenland. - Map of ice divide north of GRIP. - Map of magnetic declination in Greenland. - Positions in Greenland. - Relevant distances and directions. - 1996 Twin Otter hours. - List of NGRIP addresses.
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