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  • English  (3,417)
  • Polish  (5)
  • Italian  (1)
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  • 1975-1979  (1,924)
  • 1965-1969  (1,501)
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  • 101
    Series available for loan
    Series available for loan
    Thermal pollution studies of French creek, Eielson AFB, Alaska (1976)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
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    Call number: ZSP-201-76/14
    In: CRREL Report, 76-14
    Description / Table of Contents: At the height of warm weather in Alaska in 1975, temperature measurements were made to determine the extent of the thermal impact on French Creek due to a condenser cooling water impact from the Eielson AFB Power plant. Water temperature measurements during a two-day period failed to show any significant thermal impact on the water in French Creek. It was concluded that no thermal pollution exists due to this warm water input at the volumes and conditions that presently exist.
    Type of Medium: Series available for loan
    Pages: ii, 5 Seiten , Illustrationen
    Series Statement: CRREL Report 76-14
    URL: https://cdm16021.contentdm.oclc.org/digital/collection/p266001coll1/id/6222
    Language: English
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  • 102
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    Series available for loan
    Revegetation in Arctic and subarctic North America : a literature review (1976)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
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    Call number: ZSP-201-76/15
    In: CRREL Report, 76-15
    Description / Table of Contents: A literature review of revegetation and biological aspects of restoration research was completed for arctic and sub­arctic North America. Although there is a great deal of climatic variation in this region it is generally characterized by extreme conditions, such as a short growing season and permafrost. Most of the revegetation research has been undertaken in the last six years as a result of increased natural resource development. The primary goal has been erosion control, with aesthetics, minimization of thermokarst, and production of browse as other objectives. Revege­tation and long-term restoration methods depend upon such variables as the site conditions, nutrient regime (especially as this is influenced by the climatic conditions in the Arctic and Subarctic), plant adaptations, and the selection of native or introduced species. Technologies which have been developed to meet these conditions primarily include seedbed preparation, use of seed mixes, and fertilization and seeding methods. Most of the research has focused on the use of agronomic grasses and legumes. These are selected on the basis of a number of factors, such as cold hardiness and growth form prior to evaluation in the laboratory and the field. The most successful species to date have been Arctared fescue and Nugget bluegrass in the Arctic, while these two as well as creeping red fescue, meadow foxtail, Frontier reed canarygrass, Durar hard fescue, slender wheatgrass, and Icelandic poa did well in the Subarctic. Similar methods have been attempted to a more limited extent with evaluation of native herbaceous and woody species which seem promising on the basis of natural succession studies. There are a number of continuing research needs for arctic anc subarctic revegetation. These include fertilization strategies, development of specialized techniques (such as sprigging) for native species, and longer term studies. It is particularly important to integrate short term revegetatio methods with long-term restoration goals.
    Type of Medium: Series available for loan
    Pages: iv, 32 Seiten , Illustrationen
    Series Statement: CRREL Report 76-15
    URL: https://cdm16021.contentdm.oclc.org/digital/collection/p266001coll1/id/6160
    Language: English
    Note: CONTENTS Page Abstract Preface Introduction Definition of revegetation Definition of restoration Objectives Some revegetation considerations Site conditions Nutrient regime Plant adaptations Native species vs introduced species Methods Seedbed preparation Seeding methods Timing of seeding Seed mixes Fertilization Agronomic grasses and legumes Selection criteria Laboratory evaluation Field evaluation Effect of revegetation methods Site conditions Maintenance of herbaceous cover Introduced woody species Native species — succession Significance of disturbance Primary succession Secondary succession Herbaceous native species Selection Laboratory evaluation Field evaluation Effect of revegetation methods Woody native species Selection Laboratory evaluation Field evaluation Native species and agronomic species, in combination Recommendations for research Summary Bibliography Appendix: Species tested
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  • 103
    Series available for loan
    Series available for loan
    Compressibility characteristics of compacted snow (1976)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
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    Call number: ZSP-201-76/21
    In: CRREL Report, 76-21
    Description / Table of Contents: The effects of snow temperature and initial density on the stress vs density and stress vs deformation relationships were investigated for shallow compacted snow in the density range of 0.28 to 0.76 g/cu m, for stress range of 0.5 to 72 bars and a temperature range of -1 to -34 C at a deformation rate of 40 cm/s. A decrease in temperature increases the resistance to stress, the effect increasing with applied stress. For any stress, an increase in the initial density results in an increase in the resulting density, the effect decreasing with an increase in stress. The approximate yield envelopes, which define the stress required to initiate any deformation of snow of a particular density and temperature, were determined. Rapid compaction of snow results in extensive recrystallization, significantly different from that of naturally compacted snow. At a stress of 72 bars, transformation to ice occurs only at temperature above -10C.
    Type of Medium: Series available for loan
    Pages: vi, 47 Seiten , Illustrationen
    Series Statement: CRREL Report 76-21
    URL: https://cdm16021.contentdm.oclc.org/digital/collection/p266001coll1/id/6184/rec/1
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Description of study Sample preparation Test equipment and procedure Discussion of results Stress-density relationship Stress-deformation relationship Summary and conclusions Microstructural examination of artifically compacted snow Analytical techniques Results and discussion Conclusions Literature cited Appendix: Photographs of oscilloscope traces
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  • 104
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    Series available for loan
    Thickness and roughness variations of Arctic multiyear sea ice (1976)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
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    Call number: ZSP-201-76/18
    In: CRREL Report, 76-18
    Description / Table of Contents: Three surface elevation and ice thickness profiles obtained during the 1972 Arctic Ice Dynamics Joint Experiment on a multiyear ice floe were analyzed to obtain relationships between surface elevation, thickness and physical properties of the ice. It was found that for ice freeboards from 0.10 m to 1.05 m above sea level a linear relationship between ice density and freeboard could be postulated. The equation for the regression line is: Ice density = -194f' + 974 kg/cu m where f' is the ice freeboard plus snow depth in ice equivalent at the point in question. This statistical relationship is consistent with observed physical properties, which indicate that as the ice freeboard increases, ice salinity decreases and the higher freeboard or thicker ice therefore decreases in density. Using this variable density with freeboard relationship, a model was constructed to predict ice thickness, given ice freeboard and snow depth alone. This prediction is desirable, since snow depth and freeboard are relatively easy to obtain, whereas ice thickness can usually be obtained only by drilling through the ice. The model was compared with two other models. It was found that the variable density prediction model gave the best approximation to observed ice thickness, with a standard error between the measured and predicted value of about 0.4 m, compared with errors from 50 to 100% higher for the other two models.
    Type of Medium: Series available for loan
    Pages: v, 25 Seiten , Illustrationen
    Series Statement: CRREL Report 76-18
    URL: Abstract
    Language: English
    Note: Contents Abstract Preface Summary Introduction Previous work Results Models for predicting thickness from ice freeboard Comparison between measured and predicted thicknesses Spectral behavior of measured and predicted profiles Comparisons of ice thickness using airborne laser profilometry Conclusions Literature cited Appendix A: Misgivings on isostatic imbalance as a mechanism for sea ice cracking
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  • 105
    Monograph available for loan
    Monograph available for loan
    Webster's third new international dictionary of the English language unabridged : utilizing all the experience and resources of more than one hundred years of Merriam-Webster dictionaries (1976)
    Springfield : Merriam
    Details Availability
    Call number: AWI S5-82-0002
    Type of Medium: Monograph available for loan
    Pages: 86a, 2662 S.
    Language: English
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  • 106
    Monograph available for loan
    Monograph available for loan
    The general limnology of arctic lakes as illustrated by examples from Greenland (1967)
    København : Reitzel
    Associated volumes
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    Call number: ZSP-553-178,3
    In: Meddelelser om Grønland
    Type of Medium: Monograph available for loan
    Pages: 77 S., 1 Taf. : Ill., graph. Darst., Kt.
    Series Statement: Meddelelser om Grønland 178,3
    Language: English
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  • 107
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    Monograph available for loan
    Geological investigations in East Greenland, Part XI : the minor peripheral intrusions, Kangerdlugssuaq, East Greenland (1976)
    København : Nyt Nordisk Forl.
    Associated volumes
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    Call number: ZSP-553-197,4
    In: Meddelelser om Grønland
    Type of Medium: Monograph available for loan
    Pages: 25 S.
    ISBN: 8717022185
    Series Statement: Meddelelser om Grønland 197,4
    Language: English
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  • 108
    Monograph available for loan
    Monograph available for loan
    Vegetation of the Angmagssalik district Souteast Greenland 3 : epilithic macrolichen communities (1975)
    København : Reitzel
    Associated volumes
    Details Availability
    Call number: ZSP-553-198,3
    In: Meddelelser om Grønland
    Type of Medium: Monograph available for loan
    Pages: 32 S. : Ill., Kt.
    ISBN: 8742101123
    Series Statement: Meddelelser om Grønland 198,3
    Language: English
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  • 109
    Monograph available for loan
    Monograph available for loan
    Vegetation of the Angmagssalik district Southeast Greenland 2 : herb and snow-bed vegetation (1976)
    København : Nyt Nordisk Forl.
    Associated volumes
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    Call number: ZSP-553-198,2
    In: Meddelelser om Grønland
    Type of Medium: Monograph available for loan
    Pages: 266 S.
    ISBN: 8717021200
    Series Statement: Meddelelser om Grønland 198,2
    Language: English
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  • 110
    Monograph available for loan
    Monograph available for loan
    Balanus Balanoides (L.) (Cirripedia) : life cycle and growth in Greenland (1966)
    København : Reitzel
    Associated volumes
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    Call number: ZSP-553-159,12
    In: Meddelelser om Grønland
    Type of Medium: Monograph available for loan
    Pages: 114 S., 38 Taf. : Ill., graph. Darst.
    Series Statement: Meddelelser om Grønland 159,12
    Language: English
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  • 111
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    Series available for loan
    Radiometric survey between Scoresby Sund and Hold with Hope, central East Greenland (1976)
    Koebenhavn : Grønlands Geol. Undersøgelse
    Associated volumes
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    Call number: ZSP-683-76
    In: Rapport = Report
    Description / Table of Contents: Airborne gamma-spectrometry and subsequent radiometric field investigations in central East Greenland have revealed a number of areas of above average radioactivity and a number of radioactive anomalies within these areas. These areas can be divided geologically into: pre-Caledonian crystalline basement, late and post-Caledonian plutonic rocks, Tertiary plutons and areas of intensive faulting and shearing. Areas bordering continental sedimentary formations are envisaged as potential host rocks for epigenetic uranium mineralization. The spectrometer system applied, with the detector volume of 3.7 litres, does not completely satisfy a quantitative evaluation of the spectrometric data recorded and a distinction between major rock units is only possible from the gross channel count rates.
    Type of Medium: Series available for loan
    Pages: 44 S. : Ill., graph. Darst., Kt.
    Series Statement: The Geological Survey of Greenland : Report 76
    Language: English
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  • 112
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    Series available for loan
    Upper-air sounding studies (1975)
    Geneva : WMO
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    Call number: MOP Per 800(394)
    In: WMO
    In: Technical note
    Type of Medium: Series available for loan
    Pages: 160 S.
    Series Statement: WMO / World Meteorological Organization 394
    Language: English
    Location: MOP - must be ordered
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  • 113
    Monograph available for loan
    Monograph available for loan
    Atlas of the textural patterns of basalts and their genetic significance (1978)
    Amsterdam [u.a.] : Elsevier
    Details Availability
    Call number: M 93.0227 ; M 304
    Type of Medium: Monograph available for loan
    Pages: X, 323 S.
    ISBN: 0444415661
    Language: English
    Location: Upper compact magazine
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  • 114
    Monograph available for loan
    Monograph available for loan
    The surface of the earth (1969)
    Englewood Cliffs : Prentice-Hall
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    Call number: M 93.0220
    Type of Medium: Monograph available for loan
    Pages: VIII, 152 S. : Ill.
    Edition: 4. print.
    Series Statement: Foundations of earth science
    Language: English
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  • 115
    Monograph available for loan
    Monograph available for loan
    Ophiolites : ancient oceanic lithosphere? (1977)
    Berlin [u.a.] : Springer
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    Call number: G 7148(2. Ex.) ; 10/G 7724 ; M 93.0092/12 ; G 7148(1. Ex.)
    In: Minerals and rocks
    Type of Medium: Monograph available for loan
    Pages: IX, 229 S. : graph. Darst.
    Series Statement: Minerals and rocks 12
    Language: English
    Location: Upper compact magazine
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  • 116
    Monograph available for loan
    Monograph available for loan
    Plate tectonics and crustal evolution (1979)
    New York [u.a.] : Pergamon Press
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    Call number: M 93.0234
    Type of Medium: Monograph available for loan
    Pages: IX, 288 S. : Ill.
    Edition: 2. print.
    ISBN: 0080195946
    Language: English
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  • 117
    Monograph available for loan
    Monograph available for loan
    Rocks and rock minerals (1979)
    New York [u.a.] : Wiley
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    Call number: M 93.0160
    Type of Medium: Monograph available for loan
    Pages: XI, 319 S.
    ISBN: 0471029343
    Language: English
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  • 118
    Monograph available for loan
    Monograph available for loan
    Environment of the Cape Thompson region, Alaska (1966)
    Oak Ridge
    Details Availability
    Call number: M 93.0145
    Type of Medium: Monograph available for loan
    Pages: XVI, 1250 S.
    Language: English
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  • 119
    Monograph available for loan
    Monograph available for loan
    The alkaline rocks (1979)
    Chichester [u.a.] : Wiley
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    Call number: M 93.0152
    Type of Medium: Monograph available for loan
    Pages: XII, 622 S.
    Edition: reprinted
    ISBN: 0471813834
    Language: English
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  • 120
    Monograph available for loan
    Monograph available for loan
    Geochemical exploration methods for minerals deposits (1977)
    Wilmette : Applied Publishing Ltd.
    Details Availability
    Call number: M 93.0018 ; M 93.0018
    Type of Medium: Monograph available for loan
    Pages: X, 287 S. : Ill.
    ISBN: 0915834030
    Uniform Title: Geochimiceskie methody poiskov ...
    Language: English
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  • 121
    Monograph available for loan
    Monograph available for loan
    Earth photographs from Gemini III, IV, and V (1967)
    Washington
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    Call number: M 93.0140
    In: NASA SP
    Type of Medium: Monograph available for loan
    Pages: IX, 256 S. : überw. Ill.
    Series Statement: NASA SP 129
    Language: English
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  • 122
    Monograph available for loan
    Monograph available for loan
    The early history of the earth : based on the proceedings of a NATO Advanced Study Instiute held at the University of Leicester [U.K.], 5-11 April 1975 (1978)
    Chichester [u.a.] : Wiley
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    Call number: M 93.0116
    Type of Medium: Monograph available for loan
    Pages: IX, 619 S. : Ill.
    ISBN: 0471014885
    Language: English
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  • 123
    Monograph available for loan
    Monograph available for loan
    Genetic types of rare-element deposits; Vol. 3. (1968)
    Associated volumes
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    Call number: M 93.0069/3
    In: Geochemistry and mineralgy of rare elements and genetic types of their deposits
    Type of Medium: Monograph available for loan
    Pages: XX, 916 S. : graph. Darst., Kt.
    Uniform Title: Geneticheskie tipy mestorozhdenii redkikh elementov
    Language: English
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  • 124
    Monograph available for loan
    Monograph available for loan
    Israel meteorological research papers : in memory of Gideon Steinitz; Volume 1 (1977)
    Bet Dagan : Israel Meteorological Service
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    Call number: MOP 40426 / Mitte
    In: Israel meteorological research papers
    Type of Medium: Monograph available for loan
    Pages: ii, 175 Seiten , Illustrationen
    Series Statement: Israel meteorological research papers 1
    Language: English
    Location: MOP - must be ordered
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  • 125
    Monograph available for loan
    Monograph available for loan
    Physical methods in determinative mineralogy (1977)
    London [u.a.] : Acad. Press
    Details Availability
    Call number: G 7746 ; M 93.0213
    Type of Medium: Monograph available for loan
    Pages: XIV, 720 S. : Ill., graph. Darst.
    Edition: 2. ed.
    ISBN: 0127829601
    Language: English
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  • 126
    Monograph available for loan
    Monograph available for loan
    Volcanic processes in ore genesis : proceedings of a joint meeting of the Volcanic Studies Group of the Geological Society of London and the Institution of Mining and Metallurgy, held in London on 21 and 22 January 1976 (1977)
    London : The Institiution of Mining and Metallurgy; The Geological Society
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    Call number: M 93.0242
    In: (DE-B103)41191, Special publications / the Geological Society, London
    Description / Table of Contents: Subsurface aspects of the ore-forming process can be described in terms of standard chemical transport parameters such as T-P gradients, mineral solubilities, solvent chemistry and volume, diffusion parameters and energy flow. These necessary factors are rather easily assessed by geochemical, isotopic and structural studies. If deposition is in the surface environment, a complex array of factors will determine the success of the natural concentration process and the chances of preservation of a deposit. Basically, most large-scale ore-forming processes involve large fluid volumes and energy sources. Many environments where these requirements are met, the modern ocean ridge and the subduction environment, are still not well understood. The need for remote-sensing techniques in the submarine environment is stressed.
    Type of Medium: Monograph available for loan
    Pages: VI, 188 Seiten , Illustrationen
    ISBN: 0900488336
    Series Statement: Special publications / the Geological Society, London 7
    URL: https://doi.org/10.1144/GSL.SP.1977.007.01.01
    DOI: https://doi.org/10.1144/GSL.SP.1977.007.01.01
    Language: English
    Note: Articles Introductory remarks on the transport problem W. S. Fyfe https://doi.org/10.1144/GSL.SP.1977.007.01.01 Model of hydrothermal ore genesis J. W. Elder https://doi.org/10.1144/GSL.SP.1977.007.01.02 Identification of ore-deposition environment from trace-element geochemistry of associated igneous host rocks J. A. Pearce and G. H. Gale https://doi.org/10.1144/GSL.SP.1977.007.01.03 Identification of the origin of oreforming solutions by the use of stable isotopes S. M. F. Sheppard https://doi.org/10.1144/GSL.SP.1977.007.01.04 Hydrogen and oxygen isotope evidence for sea-water-hydrothermal alteration and ore deposition, Troodos complex, Cyprus T. H. E. Heaton and S. M. F. Sheppard https://doi.org/10.1144/GSL.SP.1977.007.01.05 Hydrodynamic model for the origin of the ophiolitic cupriferous pyrite ore deposits of Cyprus E. T. C. Spooner https://doi.org/10.1144/GSL.SP.1977.007.01.06 Origin and emplacement of ophiolites I. G. Gass https://doi.org/10.1144/GSL.SP.1977.007.01.07 Hydrothermal alteration of the basaltic lavas of the Troodos Ophiolite Complex associated with the formation of the massive sulphide deposits G. Constantinou https://doi.org/10.1144/GSL.SP.1977.007.01.08 Rare-earth element evidence for the genesis of the metalliferous sediments of Troodos, Cyprus A. H. F. Robertson and A. J. Fleet https://doi.org/10.1144/GSL.SP.1977.007.01.09 Modern submarine hydrothermal mineralization: examples from Santorini and the Red Sea D. S. Cronan, P. A. Smith, and R. D. Bignell https://doi.org/10.1144/GSL.SP.1977.007.01.10 Mineralization at destructive plate boundaries: a brief review M. S. Garson and A. H. G. Mitchell https://doi.org/10.1144/GSL.SP.1977.007.01.11 Porphyry copper deposits J. P. Hunt https://doi.org/10.1144/GSL.SP.1977.007.01.12 Metallic mineralization affiliated to subaerial volcanism: a review R. H. Sillitoe https://doi.org/10.1144/GSL.SP.1977.007.01.13 Igneous geology and the evolution of hydrothermal systems in some sub-volcanic tin deposits of Bolivia J. N. Grant, C. Halls, W. Avila, and G. Avila https://doi.org/10.1144/GSL.SP.1977.007.01.14 Occurrence, origin and significance of mechanically transported sulphide ores at Buchans, Newfoundland J. G. Thurlow https://doi.org/10.1144/GSL.SP.1977.007.01.15 Geological setting of the Skorovas orebody within the allochthonous volcanic stratigraphy of the Gjersvik Nappe, central Norway C. Halls, A. Reinsbakken, I. Ferriday, A. Haugen, and A. Rankin https://doi.org/10.1144/GSL.SP.1977.007.01.16 The Planes-San Antonio pyritic deposit of Rio Tinto, Spain: its nature, environment and genesis D. Williams, R. L. Stanton, and F. Rambaud https://doi.org/10.1144/GSL.SP.1977.007.01.17 Kuroko deposits: their geology, geochemistry and origin Takeo Sato https://doi.org/10.1144/GSL.SP.1977.007.01.18 Stable isotope studies on Bougainville and in Matupi Harbour, New Britain, Papua New Guinea J. H. Ford, D. C. Green, J. R. Hulston, I. H. Crick, and S. M. F. Sheppard https://doi.org/10.1144/GSL.SP.1977.007.01.19 Volcanogenic mineralization at Avoca, Co. Wicklow, Ireland, and its regional implications J. W. Platt https://doi.org/10.1144/GSL.SP.1977.007.01.20 Discussion https://doi.org/10.1144/GSL.SP.1977.007.01.21
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  • 127
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    Monograph available for loan
    Regional studies; Vol. 5. (1976)
    Amsterdam [u.a.] : Elsevier
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    Call number: 11/M 93.0094/5
    In: Handbook of strata-bound and stratiform ore deposits ; part II
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    Pages: XI, 319 S.
    ISBN: 0444414053
    Language: English
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  • 128
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    Tectonics and metamorphism; Vol. 4. (1976)
    Amsterdam [u.a.] : Elsevier
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    Call number: 11/MR 90.0991 ; M 93.0094/4
    In: Handbook of strata-bound and stratiform ore deposits ; part I
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    Pages: X, 429 S.
    ISBN: 0444414045
    Language: English
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    Au, U, Fe, Mn, Hg, Sb, W, and P deposits; Vol. 7. (1976)
    Amsterdam [u.a.] : Elsevier
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    Call number: 11/M 93.0094/7
    In: Handbook of strata-bound and stratiform ore deposits ; part II
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    Pages: xii, 656 S.
    ISBN: 044441407X
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  • 130
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    Classifications and historical studies; Vol. 1. (1976)
    Amsterdam [u.a.] : Elsevier
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    Call number: 11/MR 90.0988 ; M 93.0094/1
    In: Handbook of strata-bound and stratiform ore deposits ; part I
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    Pages: X, 338 S.
    ISBN: 0444414010
    Language: English
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  • 131
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    1965; 2. (1965)
    London [u.a.]: Academic Press
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    Call number: 93.0079
    In: Chemical oceanography
    Language: English
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  • 132
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    Geochemical studies; Vol. 2. (1976)
    Amsterdam [u.a.] : Elsevier
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    Call number: 11/MR 90.0989 ; M 93.0094/2
    In: Handbook of strata-bound and stratiform ore deposits ; part I
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    Pages: XI, 363 S.
    ISBN: 0444414029
    Language: English
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  • 133
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    Porphyry copper case study (1976)
    Milton Keynes : The Open University Press
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    Call number: 93.0258
    Pages: 80 S.
    Series Statement: The Open University. Science: A third level course. Earth schience topics and methods , S 333PC
    Language: English
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  • 134
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    Geochemical exploration 1974 : Proceedings of the Fifth International Geochemical Exploration Symposium held in Vancouver, B.C., Canada, April 1-4, 1974 (1975)
    Amsterdam [u.a.] : Elsevier
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    Call number: 9/M 93.0187/1
    In: Developments in economic geology
    In: Association of Exploration Geochemists: Special publication
    Type of Medium: Monograph available for loan
    Pages: XI, 720 S. : graph. Darst.
    ISBN: 0444412808
    Series Statement: Developments in economic geology 1) (Association of Exploration Geochemists special Publication 2
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  • 135
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    Kimberlites, diatremes, and diamonds : their geology, petrology, and geochemistry; 1. (1979)
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    Call number: 12222 ; M 93.0039/1
    In: Proceedings of the Second International Kimberlite Conference
    Type of Medium: Monograph available for loan
    Pages: 399 S. : graph. Darst.
    ISBN: 087590212X
    Language: English
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  • 136
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    Proceedings of the joint symposium on atmospheric ozone : Dresden, 9-17 August 1976 ; Volume 3 (1977)
    Berlin : Selbstverlag
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    Call number: PIK N 456-99-0151 ; MOP 44361/3 / Mitte
    In: Proceedings of the joint symposium on atmospheric ozone, Volume 3
    Type of Medium: Monograph available for loan
    Pages: 386 Seiten
    Series Statement: Proceedings of the joint symposium on atmospheric ozone 3
    Language: English
    Location: A 18 - must be ordered
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  • 137
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    Monograph available for loan
    Proceedings of the joint symposium on atmospheric ozone : Dresden, 9-17 August 1976 ; Volume 1 (1977)
    Berlin : Selbstverlag
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    Call number: PIK N 456-99-0149 ; MOP 44361/1 / Mitte
    In: Proceedings of the joint symposium on atmospheric ozone, Volume 1
    Type of Medium: Monograph available for loan
    Pages: 386 Seiten , Illustrationen
    Series Statement: Proceedings of the joint symposium on atmospheric ozone 1
    Language: English
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  • 138
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    Proceedings of the joint symposium on atmospheric ozone : Dresden, 9-17 August 1976 ; Volume 2 (1977)
    Berlin : Selbstverlag
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    Call number: PIK N 456-99-0150 ; MOP 44361/2 / Mitte
    In: Proceedings of the joint symposium on atmospheric ozone, Volume 2
    Type of Medium: Monograph available for loan
    Pages: 386 Seiten
    Series Statement: Proceedings of the joint symposium on atmospheric ozone 2
    Language: English
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  • 139
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    Chemical modeling in aqueous systems : speciation, sorption, solubility, and kinetics ; based on a symposium ... at the 176th meeting of the American Chemical Soc., Miami Beach, Florida, USA, September 11-12, 1978 (1979)
    Washington, DC
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    Call number: M 93.0067/1
    In: American Chemical Society symposium series
    Type of Medium: Monograph available for loan
    Pages: XII, 914 S. : graph. Darst.
    Series Statement: American Chemical Society symposium series 93
    Language: English
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  • 140
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    Submarine Canyons and other sea valleys (1966)
    Chicago : Rand McNally
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    Call number: M 97.0183
    Type of Medium: Monograph available for loan
    Pages: XIII, 381 S.
    Classification:
    Tectonics
    Language: English
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  • 141
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    Grouting silt and sand at low temperatures : a laboratory investigation (1979)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    In: CRREL Report, 79-5
    Description / Table of Contents: Abstract: This report presents data from an experimental program undertaken to develop information on proposed and existing chemical grout solutions to provide engineering properties in connection with grouting of soils in ambient temperatures of 39° ±1°F (3.88°C) and below. Twelve grout solutions were investigated, including organic chemicals, sodium silicates, cements, and clay (bentonite). Set or gel tests were performed on each chemical solution, in the center of which a thermocouple was placed for measuring the rates of heat of reaction, except those of the cements and the clay. These solutions consisted of the mixing portions of the chemicals and were placed into 4-in.-diam by approximately 6-in.-long cylinders at an ambient temperature of 39°F.
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    Pages: v, 38 Seiten , Illustrationen
    Series Statement: CRREL Report 79-5
    URL: https://hdl.handle.net/11681/9020
    Language: English
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  • 142
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    Effect of temperature on strength of snow-ice (1978)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-78/27
    In: CRREL Report, 78-27
    Description / Table of Contents: Uniaxial compression and tension tests were conducted on polycrystalline snow-ice to determine the effect of temperature on its strength. Test temperatures ranged from -O.1C to -54C. Two machine speeds, 0.847 mm/s and84.7 mm/s were used for the constant displacement rate tests. The compressive strength at -54C was about oneorder of magnitude higher than at -0.1C. The tensile strength at -18C was about 20% higher than at 0.1C. The initial tangent and 50% strength moduli are given for the compression tests, while the secant modulus to failure is given for the tension tests.The mode of fracture is discussed and the test results are compared with data from other investigations.
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    Pages: iii, 22 Seiten , Illustrationen
    Series Statement: CRREL Report 78-27
    URL: https://apps.dtic.mil/dtic/tr/fulltext/u2/a067583.pdf
    Language: English
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  • 143
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    Series available for loan
    Primary production in sea ice of the Weddell region (1978)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-78/19
    In: CRREL Report, 78-19
    Type of Medium: Series available for loan
    Pages: iv, 21 Seiten , Illustrationen
    Series Statement: CRREL Report 78-19
    URL: https://hdl.handle.net/11681/9389
    Language: English
    Note: CONTENTS Abstract Preface Introduction Previous work Methods and results Methods of analysis Salinity-chlorophyll a associations Discussion Comparison of ice and water column standing crops Estimated mass of ice associated chl. a Mechanism of ice algae formation in the Weddell Sea Differences between the biological environments of fast and drifting pack ice Conclusions Literature cited Appendix A. Species variations - ice and water column
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  • 144
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    Series available for loan
    Ice fog suppression using reinforced thin chemical films (1978)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-78/26
    In: CRREL Report, 78-26
    Description / Table of Contents: Ice fog suppression experiments on the Fort Wainwright Power Plant cooling pond were conducted during the winters of 1974-76. Baseline information studies occupied a sizable portion of the available ice fog weather in 1974-75. Then hexadecanol was added to the pond and dramatically improved visibility by reducing fog generated from water vapor released by the pond at -14 C. Although this temperature was not low enough to create ice fog, the cold vapor fog created was equally as devastating to visibility in the vicinity of the pond. During the winter of 1975-76, suppression tests were continued using films of hexadecanol, mixes of hexadecanol and octadecanol, and ethylene glycol monobutyl ether (EGME). Suppression effectiveness at colder temperatures was stuided and limits to the techniques were probed. A reinforcing grid was constructed that prevented breakup of the film by wind and water currents. Lifetime tests indicated that EGME degrades much more slowly than either hexadecanol or the hexadecanol-octadecanol mix. The films were found to be very effective fog reducers at warmer temperatures but still allowed 20% to 40% of normal evaporation to occur. The vapor thus produced was sufficient to create some ice fog at lower temperatures, but this ice fog occurred less frequently and was more quickly dispersed than the thick fog that was present before application of the films.
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    Pages: iv, 27 Seiten , Illustrationen
    Series Statement: CRREL Report 78-26
    URL: https://hdl.handle.net/11681/9456
    Language: English
    Note: CONTENTS Abstract Preface Introduction Ice fog from cooling ponds Evaporation Relative humidity and cold air Ice fog suppression Air movement Plastic films Rafts Injection wells Cooling towers Chemical films Reinforced film experiments Meteorological data collection Floating reinforcement grid Application of the hexadecanol film Hexadecanol, octadecanol mixes Ethylene glycol monobutyl ether Laboratory tests of suppression effectiveness Conclusions Literature cited Appendix A. Design for an automatic thin chemical film applicationsystem Appendix B. Meteorological data
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  • 145
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    Series available for loan
    Estuarine processes and intertidal habitats in Grays Harbor, Washington : a demonstration of remote sensing techniques (1978)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-78/18
    In: CRREL Report, 78-18
    Description / Table of Contents: The primary objective of this project was to demonstrate the utility of remote sensing techniques as an operational tool in the acquisition of data required by the U.S. Army Corps of Engineers, Seattle District, in the Grays Harbor dredging effects project, and related projects. Aerial imagery was used to map surface circulation and suspended sediment patterns near the hopper dredge pump site at the harbor entrance and near pulpmill outfalls in Aberdeen, and to map the areal distribution and extent of intertidal habitats. The surface circulation maps prepared from the aerial photographs and thermal imagery compared favorably with the large-scale circulation patterns observed in the Grays Harbor hydraulic model at the U.S. Army Engineer Waterways Experiment Station. Of the imagery provided by NASA, the thermal imagery was more useful than the color or color infrared (CIR) photographs for mapping circula­tion, while the CIR photographs were more useful than the thermal imagery or the color photographs for mapping intertidal habitats. Current velocities estimated from dye dispersion patterns and drifting dye drogues were comparable at some locations to velocities measured by in situ current meters and in the hydraulic model. Based on a cursory evaluation of LANDSAT-1 imagery acquired in January, February, and October 1973, it had limited utility in providing data on surface circulation patterns in Grays Harbor. The areal distribution and extent of nine wetland vegetation types, dune vegetation, and three types of eelgrass were mapped using primarily aerial C IR photographs and ground sur­veys. Color photographs were also used for areas not covered by the C IR photographs. Wetland vegetation types mapped were: low silty marsh, low sandy marsh, sedge marsh, high immature marsh, high mature marsh, salt marsh, diked pasture, freshwater marsh, and wooded swamp. Undiked salt marsh (first five types) covered 5540 acres (22.3 km2) in Grays Harbor.
    Type of Medium: Series available for loan
    Pages: vi, 85 Seiten , Illustrationen
    Series Statement: CRREL Report 78-18
    URL: https://hdl.handle.net/11681/9397
    Language: English
    Note: CONTENTS Abstract Preface Introduction Site description Background and objectives Project history Approach General Aircraft imagery and sensor data LANDSAT imagery Ground truth data Results and discussion Remote sensing techniques Conventional techniques Comparison of results Conclusions Advantages and disadvantages Applications Recommendations Literature cited
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  • 146
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    Series available for loan
    Remote sensing of accumulated frazil and brash ice in the St. Lawrence River (1977)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-77/8
    In: CRREL Report, 77-8
    Description / Table of Contents: A broadbanded impulse radar system was used for aerial detection of accumulated frazil and brash ice in a 9.5-km reach of the St. Lawrence River near Ogden Island. The remote sensing and data reduction system developed for the project provided data sufficient for production of a contour map having 1-ft intervals. With this contour map, the accumulation pattern of frazil and brash ice could be analyzed. Recommendations are given for improving the performance of the aerial profiling system.
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    Pages: iv, 19 Seiten , Illustrationen
    Series Statement: CRREL Report 77-8
    URL: https://hdl.handle.net/11681/9483
    Language: English
    Note: CONTENTS Page Abstract Preface Conversion factors: U.S. customary to metric (SI) units of measurement Background Objectives Profiling system Approach Profiling method Data reduction and interpretation Results Conclusions Recommendations Literature cited Appendix A. Comparison of ground and aerial data
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  • 147
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    A laboratory investigation of the mechanics and hydraulics of river ice jams (1977)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-77/9
    In: CRREL Report, 77-9
    Description / Table of Contents: This report presents experimental results on the conditions of initiation of an ice jam by a simple surface obstruction, on the equilibrium thickness of an ice jam formed by accumulation and submergence of ice floes, and on the compression strength of floating, fragmented ice cover. In the study on ice jam initiation, it was found that the minimum concentration of floes in the opening of the obstruction at which a jam occurs is nearly independent of the ratio of width of constricted passage to channel width, and is proportional to a negative power of the ratio of floe length to width of constricted passage. From energy analysis of floe submergence, a relationship relating the thickness of a jam formed by accumulation and submergence of floes to the approach flow characteristics was derived and found to fit satisfactorily the experimental data. In experiments on compression strength of floating, fragmented ice cover it was found that the compressive strength is inversely proportional to compression velocity and independent of cover length.
    Type of Medium: Series available for loan
    Pages: vii, 45 Seiten , Illustrationen
    Series Statement: CRREL Report 77-9
    URL: https://hdl.handle.net/11681/9482
    Language: English
    Note: CONTENTS Abstract Preface List of symbols Introduction I. Initiation of ice jams by partial surface obstructions A. Introductory remarks B. Experimental apparatus and procedure C. Dimensional analysis D. Presentation of results and discussion ΙΙ. Thickness of ice jams due to accumulation and transport of ice floes A. Introductory remarks B. Experimental apparatus and procedures C. Presentation of results E. Conclusion III. Compressive strength of floating fragmented ice covers A. Introductory remarks B. Experimental setup and procedure C. Presentation of results and discussion D. Conclusions Literature cited Appendix A: Experimental results on ice jam initiation Appendix B: Effect of surface tension on submergence velocity of ice floes Appendix C: Experimental results for ice jam thickness study Appendix D: Experimental results on compressive strength of fragmented ice cover
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  • 148
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    Series available for loan
    Flexural strength of ice on temperate lakes : comparative tests of large cantilever and simply supported beams (1978)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-78/9
    In: CRREL Report, 78-9
    Description / Table of Contents: Large, simply supported beams of temperate lake ice were found, generally, to yield significantly higher flexural strengths than the same beams tested in the cantilever mode. Data support the view that a significant stress concentration may exist at the fixed corners of the cantilever beams. Maximum effects are experienced with beams of cold, brittle ice substantially free of structural imperfections; for this kind of ice the strength difference factor, here attributed to the effect of stress concentrations, may exceed 2.0; that is, simply supported beams test a factor of 2 or more stronger than the same beams tested in the cantilever mode. In ice that has undergone extensive thermal degradation, the stress concentration effect may be eliminated entirely. Simply supported beams generally yield higher strengths when the top surfaces are placed in tension. This behavior is attributed to differences in ice type; the fine-grained, crack-free top layer of snow-ice which constituted up to 50% of the ice cover in the current series of tests usually reacted more strongly in tension than the coarse-grained crack-prone bottom lake ice.
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    Pages: iv, 14 Seiten , Illustrationen
    Series Statement: CRREL Report 78-9
    URL: https://hdl.handle.net/11681/9406
    Language: English
    Note: CONTENTS Abstract Preface Introduction Test sites and ice cover properties Beam testing Results Discussion Conclusions Literature cited
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  • 149
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    Series available for loan
    Some elements of iceberg technology (1978)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-78/2
    In: CRREL Report, 78-2
    Description / Table of Contents: Many of the technical questions relating to iceberg transport are given brief, but quantitative, consideration. These include iceberg genesis and properties, the mechanical stability of icebergs at sea, towing forces and tug characteristics, drag coefficients, ablation rates, and handling and processing the iceberg at both the pick-up site and at the final destination. In particular the paper attempts to make technical information on glaciological and ice engineering aspects of the problem more readily available to the interested planner or engineer. Specific conclusions include: (1) No unprotected iceberg, no matter how long or wide, would be likely to survive the ablation caused by a long trip to low latitudes. (2) Icebergs that have a horizontal dimension exceeding 2 km may well be prone to breakup by long wavelength swells. (3) To avoid the dangers associated with an iceberg capsizing, the width of a 200-m thick iceberg should always be more than 300 m. (4) For towing efficiency the length/width ratio of a towed iceberg should be appreciably greater than unity. (5) For a pilot project, the selected iceberg would have to be quite small, if for no other reason than the practical availability of tug power.
    Type of Medium: Series available for loan
    Pages: v, 31 Seiten , Illustrationen
    Series Statement: CRREL Report 78-2
    URL: https://hdl.handle.net/11681/9421
    Language: English
    Note: CONTENTS Abstract Preface Introduction Sources and properties of tabular icebergs Sources Characteristics of ice shelves near the ice front Characteristics of tabular icebergs Towing Geophysical and engineering considerations Tug characteristics Handling and processing Cutting and boring with thermal devices Penetration with electrothermal devices Electrothermal cutting Making vertical cuts by pre-split blasting Primary fragmentation by blasting Primary fragmentation by mechanical sawing Comminuting ice with machines Slurry pipelines Conclusion Literature cited
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  • 150
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    Detection of moisture in construction materials (1977)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-77/25
    In: CRREL Report, 77-25
    Description / Table of Contents: Results of a study to determine the feasibility of using an impulse radar to detect moisture variations in the built-up roof at CRREL and to monitor the curing of concrete are presented. The results indicate that impulse radar can be used to detect wide variations in roof moisture associated with built-up roof surface deterioration and that this technique has the potential of providing a nondestructive test method for measuring the strength of concrete during curing.
    Type of Medium: Series available for loan
    Pages: iv, 9 Seiten , Illustrationen
    Series Statement: CRREL Report 77-25
    URL: https://apps.dtic.mil/docs/citations/ADA045353
    URL: https://hdl.handle.net/11681/9498
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric units of measurement Introduction Impulse radar system Results and discussion Conclusions and recommendations Literature cited ILLUSTRATIONS Figure Relative locations where impulse radar measurements were made andsamples for moisture determinations were obtained on the CRREL roof Impulse radar signal reflected from metal sheet resting on roof Impulse radar signal reflection from roof at station A Impulse radar surface reflection coefficient versus moisture contentofroof Impulse radar signal reflection from aluminum foil on bottom of con-crete form and from aluminum sheet metal resting on top of form Unconfined compressive strength of concrete versus time Examples of X-Y plots of impulse radar signals obtained during thesounding of concrete slab Impulse radar signal reflection coefficients versus time for acuring concrete slab Calculated impulse radar signal attenuation in concrete slab versuselapsed time Dielectric constants versus time calculated from impulse radar signalInformation obtained during curing of concrete slab Unconfined compressive strength of concrete versus corrected reflec-tion coefficient calculated from impulse radar signal data obtainedduring the curing of concrete slab TABLES Comparison of roof moisture content with radar surface reflection coefficient and dielectric constant
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  • 151
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    Ice accumulation on ocean structures (1977)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-77/17
    In: CRREL Report, 77-17
    Description / Table of Contents: A literature search was made for information on the accretion of ice on ocean structures and on methods for control. The bulk of the reports were in Russian, with some additional Japanese, British, American, Canadian, and Icelandic sources. Analysis of icing reports indicated that sea spray is the most important cause of ship icing, with lesser amounts due to freezing rain, snow, and fog. Icing is a potential danger whenever air temperatures are below the freezing point of water and the sea temperature is 6 C or lower. Theoretical work on the ice accretion process is discussed, and a method is suggested, based on Russian experiments, for calculating the sea spray accumulation rate for cylindrical and flat surfaces as a function of water source temperature, air temperature, and wind speed. Other factors that influence icing severity are ship size and configuration, angle between ship course and water heading, and ship speed. Icing in the north temperate latitudes generally occurs in the rear of barometric depressions. Maps showing limits of various degrees of icing severity are included. Atmospheric icing measurements on tall land-based structures are presented, and potential maximum accumulations estimated. Control measures are discussed, though no completely effective method is available. Mechanical (impaction) methods are the most common, but experiments have been conducted on heated, icephobic, and deformable surfaces, and with freezing point depressants. No device for the unequivocal measurement of ice accumulation is available, though some experimental methods are suitable for controlled testing; it is recommended that a device be developed.
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    Pages: v, 42 Seiten , Illustrationen
    Series Statement: CRREL Report 77-17
    URL: https://hdl.handle.net/11681/9516
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric units of measurements Introduction The freezing proeess Icing observations Geographical distribution of icing and contributing meteorological conditions Extreme icing conditions Extremes of icc accumulation Prediction of icing occurrences Prediction of icing intensity and rate Control methods Measurement of icing rate Conclusions and recommendations Literature cited Appendix A. Maps of icing occurrence and rate Appendix B. Data for computing ship icing rates Appendix C. Estimation of ice accumulation
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  • 152
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    Roof loads resulting from rain-on-snow (1977)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-77/12
    In: CRREL Report, 77-12
    Description / Table of Contents: A computer program to calculate the increased live load on a snow-covered roof due to rain-on-snow is given. For the 25-year rainstorm falling on a heavy snow load on a flat roof in Hanover, New Hamsphire, and additional 98 kg/m2 (20 lb/ft2) of liquid water is added to the live load. The additional load due to rain-on-snow is very sensitive to the snow properties and characteristics of the roof. A wide range of live loads is possible, depending on the particular circumstances.
    Type of Medium: Series available for loan
    Pages: vii, 19 Seiten , Illustrationen
    Series Statement: CRREL Report 77-12
    URL: https://hdl.handle.net/11681/9511
    Language: English
    Note: CONTENTS Page Abstract Preface Summary Nomenclature Introduction Water movement through snow Vertical percolation Lateral flow Flat roofs Sloping roofs Rainfall intensity-duration effects Miscellaneous effects Radial flow to drains Flow along gutters on snow-covered roofs Snow structure Basal layer Conclusion Literature citied Appendix A. Computer program calculating roof loads from rain-on-snow
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  • 153
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    Series available for loan
    Ice breakup on the Chena River 1975 and 1976 (1977)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-77/14
    In: CRREL Report, 77-14
    Description / Table of Contents: The breakup of the Chena River was observed and documented during the spring of 1975 and 1976. This study attempted to determine the potential for damage to the proposed Chena River flood control dam from ice and debris during breakup. Results of this study were compared to those of a 1974 companion study. In 1975, ice thickness were determined to be 15% thinner than in 1974 and ice volume was 33% smaller. No major ice floes were observed in 1975 and no significant flooding occurred, although the approaches to a bridge at the damsite were eroded by debris and high water immediately after breakup. The 1976 breakup was milder than that of 1975. Minor flooding in the lower river was caused by jamming of a few large ice pieces, but no property damage resulted.
    Type of Medium: Series available for loan
    Pages: v, 44 Seiten , Illustrationen
    Series Statement: CRREL Report 77-14
    URL: https://hdl.handle.net/11681/9513
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Ice thickness and quantity Chronology of the 1975 Chena River breakup Checkpoint 3 Checkpoint 4 Checkpoint 5 Checkpoint 6 Checkpoint A Checkpoint 7 Checkpoint C Checkpoint D Checkpoint 8 Checkpoint 10 Checkpoint 11 Checkpoint 12 Spring flooding and debris The 1976 Chena River breakup Breakup in other years Summary and conclusions Appendix A. Sequential photographs of 1975 breakup at checkpoints 3-12
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  • 154
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    Series available for loan
    Experimental scaling study of an annular flow ice-water heat sink (1977)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-77/15
    In: CRREL Report, 77-15
    Description / Table of Contents: A laboratory experimental study was conducted on a scale model of an annular flow ice-water heat sink to be used to store the waste heat produced in a hardened defense installation operating in an isolated mode. The study ex­amined: 1) scaling relationships for predicting the performance of prototype units using data from scale models, 2) the accuracy of a computer prediction technique developed during an earlier study, 3) the heat transfer phenom­enon at the ice-water interface, and 4) some practical aspects related to the operation of a prototype installation. The scaling relationships and the computer program were found to be sufficiently accurate for use in developing a proto­type sink design. During operation the scale model sink provided an almost constant low temperature source of coolant water for approximately one-half its useful life and thereafter behaved like an ordinary stored water reservoir type heat sink. No significant operational problems were discovered.
    Type of Medium: Series available for loan
    Pages: vii, 54 Seiten , Illustrationen
    Series Statement: CRREL Report 77-15
    URL: https://hdl.handle.net/11681/9514
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Conversion factors: U.S. customary to metric units of measurement Introduction Description of experiment Apparatus Test procedure Experimental results Summary of experimental tests Influence of coolant water flow rates Approximation of the rate of melting Comparison of experimental and computed results Comparative analysis of the model sinks Approximation of the heat transfer coefficient Conclusions and recommendations Literature cited Appendix A. Experimental data, heat sink Model II Appendix B. Heat sink scaling and similarity relationships Appendix C. Derivation of the relationships for the heat transfer coefficient, Reynolds and Nusselt numbers Appendix D. Determination of freezing rates and refrigeration loads Appendix E. Approximation of stresses in the heat sink tank
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  • 155
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    Series available for loan
    Observation and analysis of protected membrane roofing system (1977)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-77/11
    In: CRREL Report, 77-11
    Description / Table of Contents: Two performance indicators, effectiveness and thermal efficiency, are defined and used to evaluate the year-round performance of three protected membrane roofs in Alaska and New Hampshire. Effectiveness is a measure of the deviations of ceiling temperatures from a yearly average, with large diviations indicating erratic performance in the roofing-insulation system and small departures indicating a thermally stable system. Thermal efficiency, the ratio of calculated heat loss to measured heat loss, is affected by climatic conditions such as rain, snow, solar radiation and wind. Thermal efficiency values of 100% or greater are possible since the calculated heat loss is based only on the inside and outside air temperature differences and the thermal properties of the roof components. Results of the year-round evaluation indicate that the three protected membrane roofs generally have high values of both effectiveness and thermal efficiency.
    Type of Medium: Series available for loan
    Pages: v, 40 Seiten , Illustrationen
    Series Statement: CRREL Report 77-11
    URL: https://hdl.handle.net/11681/9506
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors: U.S.customary to metric (SI) units of measurement Introduction Location of test sites Fairbanks Anchorage Hanover, N.H. Test program Instrumentation Effectiveness Therma lefficiency Heat balance within the roof Comparisons with conventional systems Conclusions Effectiveness of the test roof Thermal efficiency Heat balance within the roof Applicability Recommendations Literature cited Appendix A. Temperature and heat flow measurements, Anchorage and Fairbanks, Alaska, and Hanover, New Hampshire Appendix B. Thermal efficiencies of the test roof, Anchorage and Fairbanks, Alaska, and Hanover, New Hampshire Appendix C. January 1973 and August 1972 comparisons of protected membrane and conventional built-up membrane systems at Hanover, New Hampshire
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  • 156
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    Ice forces on vertical piles (1977)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-77/10
    In: CRREL Report, 77-10
    Description / Table of Contents: Abstract: The amount of force that an ice sheet can apply to a vertical pile was tested by lowering a hydraulic ram device into a hole cut in an existing ice sheet. The device had a large base and shoved a relatively narrow vertical pile in a horizontal direction. Test variables were: pile widths - 1.5 in. to 36.7 in.; pile shapes - flat, round, 45 ° and 90° wedges; ice thickness - 2.6 in. to 8.8 in.; and ram speed - 0.07 in./sec to 18.75 in./sec; but not all shapes and sizes were tested at all speeds. Air temperature was 20 ° F (-6.7 ° C). Forces and displacements were measured electronically. The findings are presented as a table of test results and as bar graphs of the resultant ice pressures versus the pile width-to-ice-thickness ratio, pile width and shape combination and pile velocity. The types of failures in the ice sheet were classified as crushing, splitting, buckling, bending, and creeping. The ice sheet generally withstood a high initial load followed by several lower peak load levels. The maximum ice pressure measured was 610 psi for a 12.6-in.-diam round pile in 8.4-in.-thick ice.
    Type of Medium: Series available for loan
    Pages: iv, 9 Seiten , Illustrationen
    Series Statement: CRREL Report 77-10
    URL: https://hdl.handle.net/11681/9505
    Language: English
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  • 157
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    Islands of grounded sea ice (1976)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-76/4
    In: CRREL Report, 76-4
    Description / Table of Contents: Large areas of grounded sea ice have been reported by early arctic explorers and more recently by the U.S. Coast Guard. The ESSA, ERTS, NOAA and DMSP satellites now provide multispectral imagery with sufficiently high resolution to allow detailed sequential observations to be made of the movement and spatial extent of arctic sea ice. This report discusses the location, formation and decay of five large (greater than 30 sq km) islands of grounded sea ice in the southern Chukchi Sea as observed for an extended period of time using satellite imagery. Measurements of the bathymetry around one grounded sea ice feature are presented along with observations made and photos taken from the ice surface. The potential use of these sea ice islands as research stations is also discussed.
    Type of Medium: Series available for loan
    Pages: v, 24 Seiten , Illustrationen
    Series Statement: CRREL Report 76-4
    URL: https://apps.dtic.mil/docs/citations/ADA025257
    Language: English
    Note: Contents Introduction The discovery Age of the island Island visit Other islands of grounded ice Discussion Literature cited
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  • 158
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    Series available for loan
    Water flow through veins in ice (1976)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-76/6
    In: CRREL Report, 76-6
    Description / Table of Contents: Water flow through the vein structure of temperate ice is described as Darbian flow in which the pressure gradient is determined from vein size and overburden pressure. A solution method for the resulting equation is given and two special cases are considered. For steady flow the equilibrium vein size is a function of depth and, by neglecting the effects of diffusion, it is shown that flow perturbations introduced at the surface propagate downward at a constant speed.These perturbations propagate so slowly that even annual surface fluctuations of flow may be eliminated by diffusion before reaching the bottom of the glacie
    Type of Medium: Series available for loan
    Pages: iii, 5 Seiten , Illustrationen
    Series Statement: CRREL Report 76-6
    URL: https://cdm16021.contentdm.oclc.org/digital/collection/p266001coll1/id/6136
    Language: English
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  • 159
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    Series available for loan
    Site access for a subarctic research effort (1976)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-76/9
    In: CRREL Report, 76-9
    Description / Table of Contents: Access to study areas may be an important factor in long-term field-oriented research, particularly in-regions without well-developed road and communications systems. In a wildland hydrometeorology research project in subarctic Alaska, access to and within a 40-square-mile research watershed has been developed both in accordance with a general plan prepared at project inception and in response to developing research requirements. Foot trails, trails for 'off-road' low-ground-pressure tracked vehicles, helicopter transport, long-term data recorders, and radio telemetry of data have all been incorporated in an access and communications system. Cost estimates indicate that incorporation of gravel roads into the system would be economically advantageous, given adequate funding for initial road construction.
    Type of Medium: Series available for loan
    Pages: iv, 9 Seiten , Illustrationen
    Series Statement: CRREL Report 76-9
    URL: https://apps.dtic.mil/docs/citations/ADA026624
    Language: English
    Note: Contents Abstract Preface Conversion factors for U.S. customary and SI units Introduction Access within the Caribou-Poker Creeks Research Watershed Trail access Helicopter access Road access Alternative approaches Long-term recorders Telemetry systems Remote sensing Relative costs A desirable system Selected bibliography
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  • 160
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    Series available for loan
    Mechanics of cutting and boring; Part II: Kinematics of axial rotation machines (1976)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-76/16
    In: CRREL Report, 76-16
    In: Mechanics of cutting and boring, (DE-B103)20210225152525
    Description / Table of Contents: This report, which is one of a series on the mechanics of cutting and boring in rock, deals with the kinematics of machines such as rotary drills, augers, tunnel boring machines, corers, and raise borers, in which the rotary cutting unit revolves about an axis that is parallel to the machine's direction of advance. The discussion and analysis cover the geometry and motion of various components of the cutting systems, including such topics as tool trajectories, tool speeds, motions of the more complicated mechanisms, chipping depth, penetration rates, production and clearance of cuttings, tool angles, and spatial distribution of cutters. Worked examples are given to illustrate the application of various equations to practical problems.
    Type of Medium: Series available for loan
    Pages: ix, 45 Seiten , Illustrationen
    Series Statement: CRREL Report 76-16
    URL: https://cdm16021.contentdm.oclc.org/digital/collection/p266001coll1/id/5413
    Language: English
    Note: CONTENTS Abstract Preface Summary Foreword Terminology Trajectories of fixed tools Trajectories of roller cutters and indenters Speed of fixed cutting tools Speed of rolling disc cutters Speed and geometry of "wide" roller cutters Skidding rollers "Spiked" rollers Epicyclic or planetary mechanisms Chipping depth and penetration rate Chip production and cutting removal rate Balancing cutting and clearing rates in flight augers Tool relief angles - kinematic considerations Tool rake angles Distribution and spacing of cutting tools Radial tool spacing Angular tool spacing Spacing in the axial direction Literature cited
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  • 161
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    Series available for loan
    Apparent anomaly in freezing of ordinary water (1976)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-76/20
    In: CRREL Report, 76-20
    Description / Table of Contents: Under ordinary conditions the freezing of water begins with supercooling and ice nucleation, and proceeds at 0°C at the ice/water interface until ice formation stops. The presence of solutes, high pressure, or dispersal in fine pores causes the water to freeze at temperatures below 0°C (the so-called freezing point depression). Whenever freezing begins, it pro­ceeds at a constant temperature, or at a temperature which becomes progressively lower. A temperature rise during ice formation is considered here to be an anomaly. Under all equal circumstances, the conditions under which an anomal­ous freezing temperature is observable appear to be very special. This report describes two different experiments dis­playing the anomalous rise of temperature after nucleation and during ice formation. In one case the water was dispersed in the fine pores of fine powders; in the other case pure water was frozen in a transparent insulated cell. Photographic observations were made; relations of ice surface to water volume were measured.
    Type of Medium: Series available for loan
    Pages: iv, 23 Seiten , Illustrationen
    Series Statement: CRREL Report 76-20
    URL: https://cdm16021.contentdm.oclc.org/digital/collection/p266001coll1/id/6198
    Language: English
    Note: CONTENTS Page Abstract Preface Conversion factors for U.S.customary and SI units Introduction Materials, instruments, measurements Experiments with water freezing in fine pores Freezing experiments with bulk water Summary and conclusions Literature cited
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  • 162
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    Series available for loan
    Mechanics of cutting and boring; Part III: Kinematics of continuous belt machines (1976)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-76/17
    In: CRREL Report, 76-17
    In: Mechanics of cutting and boring, (DE-B103)20210225152525
    Description / Table of Contents: This report, which is one of a series on the mechanics of cutting and boring in rock, deals with the kinematics of machines which utilize a continuous belt as the cutting unit (e.g. coal saws, shale saws, digger-chain trenchers). The discussion and analysis cover the geometry and motion of various components of the cutting system, including such topics as chipping depth, production and conveyance of cuttings, tool trajectories, tool speeds, tool angles, and arrangement of cutting tools on the belt. Worked examples are included to illustrate the application of various equations to practical problems
    Type of Medium: Series available for loan
    Pages: viii, 24 Seiten , Illustrationen
    Series Statement: CRREL Report 76-17
    URL: https://cdm16021.contentdm.oclc.org/digital/collection/p266001coll1/id/5414
    Language: English
    Note: Contents Abstract Preface Summary Foreword Introduction Terminology Chipping depth Production and conveyance of cuttings Tool trajectories Tool speeds Tool relief angles — kinematic considerations Tool rake angles Belt curvature, slackness and flexibility Tool layout Longitudinal tool spacing Transverse tool spacing Cross-section profiles of the kerf Literature cited
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  • 163
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    Series available for loan
    Proceedings of the first symposium on antarctic geosciences, 1978 (1979)
    Tokyo : National Institute of Polar Research
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    Call number: ZSP-592-14 ; ZSP-592-14(2.Ex.)
    In: Memoirs of National Institute of Polar Research
    Type of Medium: Series available for loan
    Pages: IV, 229 S. : Ill., graph. Darst., Kt.
    Series Statement: Memoirs of National Institute of Polar Research : Special Issue 14
    Language: English
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  • 164
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    Monograph available for loan
    Recent sedimentation in the Bering Sea (1969)
    Jerusalem : Israel Program for Scientific Transl.
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    Call number: M 97.0501
    Type of Medium: Monograph available for loan
    Pages: X, 614 S.
    Uniform Title: Processy sovremennogo osadkoobrazovanija v Beringovom More
    Classification:
    Regional Geology
    Language: English
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  • 165
    facet.materialart.
    Unknown
    Text; Part 1. (1965)
    New York : Geological Soc. of America
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    Call number: 97.0498/1
    In: Geology of the Alaska Peninsula - Island Arc and continental margin
    Pages: ix, 250 S.
    Classification:
    Regional Geology
    Language: English
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  • 166
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    Monograph available for loan
    9th International Laser Radar Conference on Laser Atmospheric Studies : conference abstracts, 2 - 5 July 1979, München (1979)
    München : DFVLR
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    Call number: MOP 44979 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 276 Seiten , Illustrationen
    Language: English
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  • 167
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    Monograph available for loan
    Reports from the Kevo Subarctic Research Station : 14 (1978)
    Turku : Turun Yliopisto
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    Call number: AWI P5-79-0002
    Type of Medium: Monograph available for loan
    Pages: 75 S.
    ISBN: 9516415903
    Language: English
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  • 168
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    Monograph available for loan
    Paleotemperature analysis (1966)
    Amsterdam [u.a.] : Elsevier
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    Call number: G 5066 ; 6743 ; 7763 ; M 93.0085/2
    In: Methods in geochemistry and geophysics
    Type of Medium: Monograph available for loan
    Pages: X, 265 S. : graph. Darst.
    Series Statement: Methods in geochemistry and geophysics 2
    Language: English
    Location: Upper compact magazine
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  • 169
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    Monograph available for loan
    Geologic time (1968)
    Englewood Cliffs : Prentice-Hall
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    Call number: M 93.0219
    Type of Medium: Monograph available for loan
    Pages: VIII, 149 S. : Ill.
    Edition: 6. print.
    Series Statement: Foundations of earth science
    Language: English
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  • 170
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    Monograph available for loan
    The evolution of the igneous rocks : fiftieth anniversary perspectives (1979)
    Princeton, NJ : Princeton Univ. Pr.
    Details Availability
    Call number: G 7717 ; G 7866 ; M 93.0036
    Type of Medium: Monograph available for loan
    Pages: 588 S. : Ill., graph. Darst.
    ISBN: 0691082235
    Language: English
    Location: Upper compact magazine
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  • 171
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    Monograph available for loan
    Geochemistry of hydrothermal ore deposits (1979)
    New York [u.a.]: Wiley
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    Call number: M 93.0239
    Type of Medium: Monograph available for loan
    Pages: XVI, 798 S.
    Edition: 2. Aufl.
    Language: English
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  • 172
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    Monograph available for loan
    Archaean geochemistry : proceedings of the Symposium on Archaean Geochemistry: the Origin and Evolution of Archaean Continental Crust, held in Hyderabad, India, November 15-19, 1977 (1978)
    Amsterdam [u.a.] : Elsevier
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    Call number: 9/MR 90.1102 ; MR 90.1103 ; M 93.0055/1
    In: Developments in precambrian geology
    Type of Medium: Monograph available for loan
    Pages: VIII, 406 S. : graph. Darst.
    Series Statement: Developments in precambrian geology 1
    Language: English
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  • 173
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    Monograph available for loan
    Geochemistry of rare elements; Vol. 1. (1966)
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    Call number: M 93.0069/1
    In: Geochemistry and mineralgy of rare elements and genetic types of their deposits
    Type of Medium: Monograph available for loan
    Pages: XIII, 688 S. : graph. Darst.
    Uniform Title: Geokhimiya redkikh elementov
    Language: English
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  • 174
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    Monograph available for loan
    Mineralogy of rare elements; Vol. 2. (1966)
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    Call number: M 93.0069/2
    In: Geochemistry and mineralgy of rare elements and genetic types of their deposits
    Type of Medium: Monograph available for loan
    Pages: XX, 945 S. : graph. Darst.
    Uniform Title: Mineralogiya redkikh elementov
    Language: English
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  • 175
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    Monograph available for loan
    Geochemical processes water and sediment environments (1979)
    New York [u.a.]: Wiley
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    Call number: M 93.0155
    Type of Medium: Monograph available for loan
    Pages: VIII, 481 S.
    Language: English
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  • 176
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    Monograph available for loan
    Introduction to geochemistry (1967)
    New York [u.a.] : McGraw-Hill
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    Call number: G 5319
    Type of Medium: Monograph available for loan
    Pages: XIII, 721 S. : graph. Darst.
    Language: English
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  • 177
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    Monograph available for loan
    Organic geochemistry : methods and results (1969)
    Berlin [u.a.] : Springer
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    Call number: M 93.0192
    Type of Medium: Monograph available for loan
    Pages: XXIV, 828 S. : graph. Darst.
    Language: English
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  • 178
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    Monograph available for loan
    Origin of the earth and moon (1979)
    New York [u.a.] : Springer
    Details Availability
    Call number: G 7858 ; M 93.0153
    Type of Medium: Monograph available for loan
    Pages: XIII, 295 S.
    ISBN: 0387903690
    Language: English
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  • 179
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    Monograph available for loan
    Copper deposits : origin, evolution, and present characteristics ; and analysis of the present copper deposits in terms of the geometrical, mechanical, thermal, and chemical aspects of the Earth's behavior during the past 4.6 billion years (1975)
    Sudbury : Tatsch
    Details Availability
    Call number: M 93.0204
    Type of Medium: Monograph available for loan
    Pages: 339 S. : graph. Darst.
    ISBN: 0912890088
    Language: English
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  • 180
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    Monograph available for loan
    Oceans (1968)
    Englewood Cliffs : Prentice-Hall
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    Call number: M 93.0218
    Type of Medium: Monograph available for loan
    Pages: VIII, 120 S. : Ill.
    Edition: 4. print.
    Series Statement: Foundations of earth science
    Language: English
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  • 181
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    Monograph available for loan
    The earth's tectonosphere : its past development and present behavior ; an analysis for the geometrical, mechanical, thermal, and chemical aspects of the earth's behavior in terms of a single, long-lived, deep-seated, global driving mechanism that has been operating during the entire 4.6 billion years that the Earth is believed to have been in existence (1977)
    Sudbury : Tatsch
    Details Availability
    Call number: M 93.0205
    Type of Medium: Monograph available for loan
    Pages: 468 S.
    Edition: 2. ed.
    ISBN: 0912890037
    Language: English
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  • 182
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    Monograph available for loan
    Geology of tin deposits (1979)
    Amsterdam [u.a.] : Elsevier
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    Call number: 9/M 93.0003
    In: Developments in economic geology
    Type of Medium: Monograph available for loan
    Pages: XI, 543 S.
    ISBN: 0444418059
    Series Statement: Developments in economic geology 11
    Language: English
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  • 183
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    Monograph available for loan
    Meteorite research : proceedings of a symposium on meteorite research, held in Vienna, Austria 7-13 August 1968 (1969)
    Dordrecht : Reidel
    Associated volumes
    Details Availability
    Call number: 8205 ; M 93.0203
    In: Astrophysics and space science library
    Type of Medium: Monograph available for loan
    Pages: XV, 940 S. : Ill., graph. Darst.
    Series Statement: Astrophysics and space science library 12
    Language: English
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  • 184
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    Geochemistry of colloid systems : for earth scientists (1979)
    Berlin [u.a.]: Springer
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    Call number: 93.0162
    Pages: XII, 450 S.
    Language: English
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  • 185
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    Mineral deposits (1979)
    Milton Keynes
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    Call number: 93.0257/3
    Pages: 140 S.
    Series Statement: The Open University. Science. A second level course. The earth's physical resourses. S 266 , Block 3
    Language: English
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  • 186
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    Monograph available for loan
    Supergene and surficial ore deposits : textures and fabrics; Vol. 3. (1976)
    Amsterdam [u.a.] : Elsevier
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    Details Availability
    Call number: 11/MR 90.0990 ; M 93.0094/3
    In: Handbook of strata-bound and stratiform ore deposits ; part I
    Type of Medium: Monograph available for loan
    Pages: XI, 353 S.
    ISBN: 0444414037
    Language: English
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  • 187
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    Energy resources (1979)
    Milton Keynes
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    Call number: 93.0257/2
    Pages: 172 S.
    Series Statement: The Open University. Science: A second level course. S 266 , Block 2
    Language: English
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  • 188
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    Monograph available for loan
    Text and figures; 1. (1977)
    Hannover : Bundesanstalt für Geowissenschaften und Rohstoffe
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    Details Availability
    Call number: 9882/I ; M 93.0064/1
    In: The iron ore deposits of Europe and adjacent areas
    Type of Medium: Monograph available for loan
    Pages: 418 S. : graph. Darst.
    Language: English
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    Location: Upper compact magazine
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  • 189
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    Monograph available for loan
    Chemical oceanography; Vol. 2. (1965)
    Associated volumes
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    Call number: M 93.0078/2 ; M 93.0079/2
    In: Chemical oceanography
    Type of Medium: Monograph available for loan
    Pages: XV, 508 S. : graph. Darst.
    Language: English
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    Location: Upper compact magazine
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  • 190
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    Monograph available for loan
    Chemical oceanography; Vol. 1. (1965)
    Associated volumes
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    Call number: M 93.0078/1
    In: Chemical oceanography
    Type of Medium: Monograph available for loan
    Pages: XIX, 712 S. : graph. Darst.
    Language: English
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  • 191
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    Monograph available for loan
    2,1. Elements H(1) to Al(13) (1978)
    Berlin [u.a.] : Springer
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    Call number: 10/M 93.0251A/2
    In: Handbook of geochemistry
    Type of Medium: Monograph available for loan
    Pages: Losebl.-Ausg.
    Language: English
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  • 192
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    Monograph available for loan
    2,2. Elements Si(14) to V(23) (1978)
    Berlin [u.a.] : Springer
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    Call number: 10/M 93.0251/3
    In: Handbook of geochemistry
    Type of Medium: Monograph available for loan
    Pages: Losebl.-Ausg.
    Language: English
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  • 193
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    Monograph available for loan
    Origin and distribution of the elements : proceedings of the second symposium, Paris, May 1977 (1979)
    Oxford [u.a.] : Pergamon Press
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    Details Availability
    Call number: G 7862 ; M 93.0149/11
    In: Physics and chemistry of the earth
    In: International series of monographs on earth sciences
    Type of Medium: Monograph available for loan
    Pages: XI, 909 S. : graph. Darst.
    Edition: 1. ed.
    Series Statement: Physics and chemistry of the earth 11
    Language: English
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  • 194
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    Monograph available for loan
    2,4. 1974 (1969)
    Berlin [u.a.] : Springer
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    Call number: 10/G 5218/2/4
    In: Handbook of geochemistry
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    Language: English
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  • 195
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    Monograph available for loan
    Handbook of geochemistry; 1. (1969)
    Berlin [u.a.] : Springer
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    Call number: 7476/1 ; 10/G 5218/1 ; 10/M 93.0251A/1
    In: Handbook of geochemistry
    Type of Medium: Monograph available for loan
    Pages: XIV, 442 S.
    Language: English
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  • 196
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    Monograph available for loan
    Trace elements in igneous petrology : a volume in memory of Paul W. Gast (1978)
    Amsterdam [u.a.] : Elsevier
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    Details Availability
    Call number: M 93.0154/5 ; 11/G 9206
    In: Developments in petrology
    Type of Medium: Monograph available for loan
    Pages: XI, 272 S.
    ISBN: 0444416587
    Series Statement: Developments in petrology 5
    Language: English
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  • 197
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    Series available for loan
    Performance of the St. Marys River ice booms, 1976-1977 (1978)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Details Availability
    Call number: ZSP-201-78/24
    In: CRREL Report, 78-24
    Type of Medium: Series available for loan
    Pages: v, 12 Seiten , Illustrationen
    Series Statement: CRREL Report 78-24
    URL: https://hdl.handle.net/11681/9383
    Language: English
    Note: CONTENTS Abstract Preface Introduction Comparison of winters Ship effects Measured forces Sequential breaking of the structure Discussion Conclusions Recommendations Literature cited Appendix A. Force level fluctuations in west ice boom, 20 January 1977
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  • 198
    Series available for loan
    Series available for loan
    Measurement and identification of aerosols collected near Barrow, Alaska (1978)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-78/20
    In: CRREL Report, 78-20
    Description / Table of Contents: Abstract: Measurements of the concentrations of Aitken nuclei in maritime air were made near Barrow, Alaska, in June 1975 with a modified Nolan-Pollack small-particle detector. The concentrations varied from 50 to 300 particles cm^-3 depending upon meteorological conditions. The mean Aitken nuclei count was 100 particles cm^-3 for diameters greater than 2 x 10^-3 μm. Transmission electron micrographs of aerosols in maritime air near Barrow were taken. The size range was measured to be 0.01 to 2.5 μm in diameter with the most frequently observed diameter being 0.04 μm. The volume of the maritime air and the collection efficiency of aerosol particles on filmed grids for electron microscopy were measured. The aerosol concentrations were found to be 76 to 101 particles cm^-3 ; the mean concentration was calculated to be 87 particles cm^-3. The aerosol particles in the maritime air were identified by electron microscopy and selected area electron diffraction analysis. About 20% of the aerosol particles were identified, and 80% of the particles were too small for electron diffraction analysis. Sea salt particles constituted 2% of the total, and clay minerals 3%; these particles were considered to be of natural origin. Solid combustion by-products such as coagulated carbon particles and fly ash particles constituted 16%. Despite the comparative remoteness of the sampling site, the measurements indicate that many anthropogenic aerosols were found using an electron microscope.
    Type of Medium: Series available for loan
    Pages: iv, 48 Seiten , Illustrationen
    Series Statement: CRREL Report 78-20
    URL: https://hdl.handle.net/11681/9391
    Language: English
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  • 199
    Series available for loan
    Series available for loan
    Interaction of a surface wave with a dielectric slab discontinuity (1978)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-78/8
    In: CRREL Report, 78-8
    Description / Table of Contents: The interaction of a 5.1-GHz transverse electric surface wave with a dielectric slab is experimentally investigated. The wave is initially supported by a dielectric substrate resting upon a metallic ground-plane. A slab, made of the same dielectric material as the substrate and variable in height, is then placed upon the waveguide. The results for a small slab sitting on the substrate showed that the discontinuity was a very inefficient launcher of reflected surface waves. Investigations of these reflections with a trough waveguide showed that, for values of slab height comparable to the exponential decay height of the surface wave, the reflections remain very small. However, as the slab height is increased beyond the decay height, the reflected amplitude approaches the theoretical value for a plane wave reflected from the interface between air and the same dielectric. The results are applicable to surface wave methods of microwave deicing of wings and helicopter rotors.
    Type of Medium: Series available for loan
    Pages: v, 16 Seiten , Illustrationen
    Series Statement: CRREL Report 78-8
    URL: https://hdl.handle.net/11681/9408
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Background Objective and procedure Theory of plane surface waves Waveguide design and characteristics Physical apparatus Frequency characteristics Spatial distribution of Ey above the guide Guide wave length Surface wave interaction with a slab discontinuity Experiments with a trough Discussion and conclusions Literature cited
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  • 200
    Series available for loan
    Series available for loan
    The viscoelastic deflection of an infinite floating ice plate subjected to a circular load (1978)
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-201-78/5
    In: CRREL Report, 78-5
    Description / Table of Contents: The viscoelastic deflection of an infinite floating ice plate subjected to a circular load was solved, assuming the Maxwell-Voigt type four-element model. An effective method of numerical integration of the solution integrals was developed, of which each integrand contains a product of Bessel functions extending to infinity. The theoretical curve was fitted to the field data, but the material constants thus found varied with time and location.
    Type of Medium: Series available for loan
    Pages: iii, 32 Seiten , Illustrationen
    Series Statement: CRREL Report 78-5
    URL: https://hdl.handle.net/11681/9415
    Language: English
    Note: CONTENTS Abstract Preface Introduction The problem The solution Method of numerical integration Ramp/steady loading Curve fitting to time lapse deflections Asymptotic deflection Deflection profiles Acknowledgement Literature cited Appendix I. Analytical background Appendix II. Computer programs, ramp time profiles and steady time profiles
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