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  • Books  (2,364)
  • English  (2,356)
  • Swedish  (8)
  • 1975-1979  (1,707)
  • 1955-1959  (659)
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  • 1
    Series available for loan
    Series available for loan
    Washington : Department of Meteorology and Climatology, Univ.
    Associated volumes
    Call number: MOP 25772
    In: Occasional report / University of Washington, Department of Meteorology and Climatology, No. 8
    Type of Medium: Series available for loan
    Pages: VI, 119 S. , graph. Darst., Kt
    Series Statement: Occasional report / University of Washington, Department of Meteorology and Climatology 8
    Language: English
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  • 2
    Series available for loan
    Series available for loan
    Washington : Deptament of Meteorology and Climatology, Univ.
    Associated volumes
    Call number: MOP 25768
    In: Scientific report / University of Washington, Department of Meteorology and Climatology, No. 1
    In: Occasional report / University of Washington, Department of Meteorology and Climatology, No. 4
    Type of Medium: Series available for loan
    Pages: 21 S. , graph. Darst.
    Series Statement: Occasional report / University of Washington, Department of Meteorology and Climatology 4
    Language: English
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  • 3
    Call number: MOP 28488
    In: Verhandelingen / Kementerian Perhubungan Djawatan Meteorologi dan Geofisik, Nr. 53
    Type of Medium: Monograph available for loan
    Pages: 1 S.
    Series Statement: Verhandelingen / Kementerian Perhubungan Djawatan Meteorologi dan Geofisik 53
    Language: English
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  • 4
    Call number: MOP 28488
    In: Verhandelingen / Kementerian Perhubungan Djawatan Meteorologi dan Geofisik, Nr. 53
    Type of Medium: Monograph available for loan
    Pages: 16 S. , graph. Darst.
    Series Statement: Verhandelingen / Kementerian Perhubungan Djawatan Meteorologi dan Geofisik 53
    Language: English
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  • 5
    Monograph available for loan
    Monograph available for loan
    Melbourne : Commonwealth Scientific and Industrial Research Organization
    Call number: MOP Per 301/B
    Type of Medium: Monograph available for loan
    Pages: 21 S. , Ill.
    ISBN: 0643003428
    Series Statement: Division of Entomology technical paper 16
    Language: English
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  • 6
    Monograph available for loan
    Monograph available for loan
    Cambridge : Cambridge Univ. Press
    Call number: M 15.89480
    Type of Medium: Monograph available for loan
    Pages: xi, 160 S. , Ill., graph. Darst.
    ISBN: 0521367603
    Classification:
    E.7.
    Language: English
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  • 7
    Monograph available for loan
    Monograph available for loan
    Washington : American Geophysical Union
    Call number: IASS 16.90053
    Type of Medium: Monograph available for loan
    Pages: v, 261 Seiten , Illustrationen
    Uniform Title: Izmenenii︠a︡ klimata. 〈engl.〉
    Language: English
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  • 8
    Call number: 12023/2
    In: Proceedings / Fourth International Congress on Rock Mechanics, Vol. 2
    Type of Medium: Monograph available for loan
    Pages: XXXVI, 727 S. , Ill., graph. Darst.
    ISBN: 906191048X
    Language: English , French , German
    Note: Contents: THEME II USE OF TESTS AND MONITORING IN THE DESIGN AND CONSTRUCTION OF ROCK STRUCTURES = UTILISATION DES ESSAIS ET DES AUSCULTATIONS DANS LA CONCEPTION ET L'EXÉCUTION D'OUVRAGES EN ROCHER = VERWENDUNG VON VERSUCHEN UND KONTROLLMESSUNGEN IM ZUSAMMENHANG MIT DEM ENTWURF UND DER ERRICHTUNG VON FELSBAUTEN. - Plateloading tests on multi-layed sedimentary rocks = Tests de surcharge de roches sédimentaires à multi-strates = Plattenladungsversuche von geschichteten Sedimentgesteinen / K. Akai, Y. Onishi, K. Takahashi. - Verhalten von vorfabrizierten Tunnelauskleidungen beim Schildvortrieb = Behaviour of the prefabricated lining in shield driven tunnels = Le comportement du revêtement préfabriqué d'un tunnel pendant l'avancement au moyen d'un bouclier / E. Andráskay, R. Attinger. - Arch formation and pillar yield in jointed rock = Formation de voûte et déformation des piliers dans une roche disjointe = Gewölbebildung und Pfeilerleistung bei abgesondertem Gestein / J. R. Barrett, B. Grumitt, M. Wical. - A new approach to the evaluation of the strength of concrete construction contact with the rocky foundation = Une nouvelle approche à l'estimation de la résistance du contact d'une construction en béton avec la fondation en roche = Neuer Standpunkt zur Berechnung von Festigkeit des Kontaktes zwischen Betonbauwerk und Felsfundamentsohle / J. A. Baslavsky, S. A. Frid. - Die Erstellung eines Pilotstollens sowie felsmechanische Untersuchungen als Grundlage für die Projektierung und den Bau des Du Toitskloof Tunnels in Südafrika = Execution of a pilot tunnel and rock mechanics investigations as a base for design and construction of the Toitskloof Tunnel in South Africa = Exécution d'une galerie de sondage et mesure des caractéristiques méchaniques des roches comme bases de la conception et de la construction du tunnel du Toitskloof, Afrique du Sud / P. C. Bebi, K. R. Mettier. - Classement statistique de mesures sismiques et conception de barrages = Statistical classification of seismic measures and dam design = Statistische Klassifizierung des seismischen Mass und Konzeption eines Staudammes / Y. Bertrand, J. Lakshmanan, J. Rouge. - The geomechanics classification in rock engineering applications = Classification géoméchanique et son application pour l'ingénieur des roches = Geomechanische Gebirgsklassifizierung und ihre Anwendung im Felsbau / Z. T. Bieniawski. - Comparison of calculated, measured and observed stresses at the Ortfjell Open Pit (Norway) = Une comparaison sur des constraintes calculées, mesurées et observées dans l'Ortfjell fosse (Norvège) = Vergleich zwischen berechneten, gemessenen und observierten Spannungen im Ortfjell Tagebau (Norwegen) / E. Broch, B. Nilsen. - Discontinuity measurement using the borehole impression probe - a case study = Mesure des discontinuités par l'emploi du "Borehole Impression Probe" = Unregelmässigkeitsmessungen unter Verwendung der Bohrloch-Eindrucksonde - eine Fallstudie / E. T. Brown, T. R. Harper, D. V. Hinds. - Strain softening marly rock = Roche marneuse à rupture progressive = Mergelstein mit progressivem Bruch / S. Cavounidis, E. Sotiropoulos. - A modified form of aquifer depletion/recovery test for assessing potential water makes into deep excavations = Modification de l'essai Lefranc pour estimer les venues d'eau dans les fouilles profondes exécutées dans l'aquifère = Abwandlung des Pump-Versuchs zur Ermittlung möglicher Wassereinbrüche in tiefen Baugruben / A. Chalmers, G. P. Daw, R. A. Scott. - Dilatometer tests in the study of the deformability of rock masses = Les essais au dilatomètre dans l'étude de la déformabilité des massifs rocheux = Dilatometerversuche zur Bestimmung der Gebirgsverformbarkeit / J. G. Charrua-Graça. - Auscultation fine d'un glissement de terrain a l'aide d'instruments nouveaux = Precise monitoring of a landslide by means of new devices = Feinbeobachtungen an einer Rutschung mittels neuartiger Instrumente / P. J. Debreuille, J. B. Francq, P. Londe. - Etude sur les caracteristiques de la roche pour un barrage d'enrochement = Study of rock characteristic for a rockfill dam = Untersuchungen der Eigenschaften des Gesteins für einen Staudamm / R. Del Hoyo Fernandez-Gago. - L'identification des roches par l'indice de continuite = Rock identification by means of continuity index = Gesteinsidentifizierung mittels Kontinuitätsindex / A. Denis, M. Panet, C. Tourenq. - Fracture growth around openings in rock models and their effect on the design of stable openings = Observation sur modèle de la propagation de la fracturation autour des cavités en rocher: impact sur les projets réels = Risswachstum rumd um Felshohlräume im Modell und ihre Auswirkungen auf den Entwurf standsicherer Hohlräume / B. B. Dhar, B. S. Verma, S. Ratan. - Site investigations and FEM calculations for two underground caverns in Peru = Reconnaissance du site et calcul par éléments finis de deuy excavations souterraines au Pérou = Felduntersuchungen und Finite-Elemente-Rechnungen für zwei Kavernen in Peru / M. Dolezalová, K. Drozd. - Analysis of a solid inclusion in situ stress measuring device = Analyse d'un capteur de contraintes in-situ peu déformable = Analyse eines verformungsarmen in-situ-Spannungsmessgebers / M. E. Duncan Fama. - Tunnels ancres a faible profundeur etude comparative sur modeles physique et mathematique = Anchored tunnels with small overburden: comparative study on physical and mathematical models = Verankerte seichtliegende Tunnel: vergleichende Untersuchungen mittels physikalischer und mathematischer Modelle / P. Egger, C. Gindroz. - Allgemeine geotechnische Gesichtspunkte und Grenzgleichgewichtsbetrachtungen als erste Orientierung bei der Planung von Talsperren = General geotechnical considerations and limit equilibrium analysis in the planning of dam foundations = Considérations générale de la géotechnique et l'analyse d'équilibre limite dans l'évaluation de suite au sujet de la construction des barrages / E. Fecker, L. Müller, G. Reik. - Investigations of stress-strain state of structurally disturbed rock massif near underground workings = Etude de l'état de tension et de déformation du massif fragmenté des roches au voisinage des galeries minières = Untersuchung des Spannungs- und Deformationszustandes des strukturgestörten Gesteinmassives in der Nähe von Untertagebaustellen / N. A. Filatov, V. D. Belykov. - Investigations into the mechanism of the failure of concrete dams rock foundations and their stability analysis = Etudes du méchanisme de rupture des fondations rocheuses des barrages en béton et calculs de leur stabilité = Bruchmechanismusuntersuchung von Felsuntergrund der Betonstaumauern und Berechnung deren Standsicherheit / Y. A. Fishman. - Preferred orientation of underground caverns in complicated tectonic zone = Orientation optimale des cavernes souterraines dans une région à tectonique complexe = Bevorzugte Orientierung von Kavernenbauten in einem Gebiet mit komplizierter Tektonik / A. Flexer, I. Larsson, M. Braun, B. Russell, L. C. Greenwood. - Investigations of seepage flow in block media as applied to designing structures on rock = Etudes de l'écoulement de filtration dans un massif fracturé, appliquées au projet d'ouvrages dans le rocher = Untersuchung der Sickerströmung im Felskörper mit Blockgefüge in Anwendung an die Projektierung der Bauwerke im Felsgestein / E. G. Gaziev, T. N. Borovykh, V. I. Rechitski. - Measurement of rock deformation in the abutments of an arch dam = Mesure des déformations d'un massif rocheux formant l'appui d'un barage voûte = Messung der Gebirgsverformungen in den Auflagern einer Bogenmauer / S. Giudici. - Die Fundierung einer exponierten Bogenbrücke = The foundations of an arch bridge in particularly difficult conditions = Les fondations d'un pont arc dans des conditions particulièrement difficiles / J. Golser, H. Brandecker, K. Mussger. - Construction behaviour of a shallow tunnel in highly stressed sedimentary rock = Comportement d'un massif
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  • 9
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/11
    In: CRREL Report, 78-11
    In: Mechanics of cutting and boring, Part VIII
    Description / Table of Contents: The report deals with forces and power requirements for cutting machines of the belt type, as exemplified by large chain saws and ladder trenchers. The forces of single cutting tools are considered, and related to the overall forces on a cutter bar. Forces are related to power, and sources of loss are identified. Tractive thrust and normal reaction are analyzed and used to assess the traction, weight and balance.
    Type of Medium: Series available for loan
    Pages: vi, 24 Seiten , Illustrationen
    Series Statement: CRREL Report 78-11
    Language: English
    Note: CONTENTS Abstract Preface Foreword Introduction Terminology Tool forces Number of active cutting teeth Tool force and chain force Chain power Tool turce and belt power Tractive thrust and normal reaction Traction of carrier vehicles Power/weight ratio Cutter bar moments Specific energy Performance index Power density Apparent belt pressure Acceleratin and transport of cuttings Examples
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  • 10
    Series available for loan
    Series available for loan
    Hanover, NH : U. S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-85/21
    In: CRREL Report, 85-21
    Description / Table of Contents: The development of lightweight coring augers for ice is reviewed. Emphasis is on equipment designed by the Cold Regions Research and Engineering Laboratory and its predecessor organizations for sampling to depths less than 20 m or so. Design and operation of the ACFEL/SIPRE/CRREL 3-in. -ID corer is discussed, and modifications of the basic design for powered operation and for drilling in frozen soil are outlined. Recent replacements for the traditional coring auger are described, and details are given for the construction and operation of the new 4 1/4-in-ID coring equipment. A powered 12-in.-ID drill for shallow-depth coring is also described.
    Type of Medium: Series available for loan
    Pages: iii, 27 Seiten , Illustrationen
    Series Statement: CRREL Report 85-21
    Language: English
    Note: CONTENTS Abstract Preface Introduction The 3-inch ice corer The Rand auger Parallel development of comparable drills The Big John 12-inch corer Power drives A simple Russian ice-corer Conclusions Literature cited
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  • 11
    Call number: MOP Per 800(422)
    In: World Meteorological Organization
    Type of Medium: Series available for loan
    Pages: VI, 172 Seiten
    Series Statement: WMO / World Meteorological Organization 422
    Language: English
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  • 12
    Call number: ZSP-201-76/37
    In: CRREL Report, 76-37
    Description / Table of Contents: Geophysical studies were conducted during September and October of 1975 in northern Maine to locate rock types suitable for construction purposes for the proposed Dickey-Lincoln School Dam Project. Simultaneous airborne magnetometer and VLF electrical resistivity surveys were performed over an area of approximately 920 km2 surrounding the confluence of the St. John and Allagash rivers. The resulting data were used to construct contour maps of apparent resistivity and of total magnetic intensity above the earth's background magnetic field. During the same time period, ground and multi-elevation surveys were performed over a special test sector of known geology. The ground and airborne study in the test sector aided in interpretation of the data by revealing a strong correlation between igneous geology, resistivity, and magnetic intensity. Lack of a similar correlation between resistivity and magnetic data in the remainder of the survey area suggested an absence of additional areas of igneous rocks. The multi-elevation survey of the test area indicated that changes in flight altitude, necessitated by the topographic relief encountered, would not seriously affect the regional resistivity patterns. Although there was no strong evidence of igneous rocks outside the test sector, suitable rock types may exist within the Dss geologic unit (cyclically bedded gray slate and sandstone) in the central part of the main survey area, where most of the high resistivity contours occur.
    Type of Medium: Series available for loan
    Pages: v, 24 Seiten , Illustrationen
    Series Statement: CRREL Report 76-37
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Measurement techniques employed Ground Airborne Magnetometer survey Results Ground control study VLF survey Bedrock geology and resistivity Aeromagnetic survey results Conclusions Literature cited Appendix A. Theory of electromagnetic resistivity surveying Appendix B. Magnetic surveying
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  • 13
    Call number: MOP 40551 / Mitte
    In: Rezul'taty issledovanij po mezdunarodnym geofiziceskim proektam
    Type of Medium: Monograph available for loan
    Pages: 578 Seiten , Illustrationen, Karten
    Language: Russian , English
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  • 14
    Call number: ZSP-201-76/33
    In: CRREL Report, 76-33
    In: Detecting structural heat losses with mobile infrared thermography / R.H. Munis, S.J. Marshall and M.A. Bush, Part IV
    Description / Table of Contents: During the winter of 1973-74 a mobile infrared thermography system was used to survey campus buildings at Dartmouth College, Hanover, New Hampshire. Both qualitative and quantitative data are presented regarding heat flow through a small area of a wall of one brick dormitory building before and after installation of aluminum reflectors between radiators and the wall. These data were used to estimate annual cost savings for 22 buildings of similar construction having aluminum reflectors installed behind 1100 radiators. The data were then compared with the actual savings which were calculated from condensate meter data. The discrepancy between estimated and actual annual cost savings is explained in detail along with all assumptions required for these calculations.
    Type of Medium: Series available for loan
    Pages: iii, 14 Seiten , Illustrationen
    Series Statement: CRREL Report 76-33
    Language: English
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  • 15
    Monograph available for loan
    Monograph available for loan
    Athens : Institute of Geological and Mining Research
    Call number: AWI G1-19-93055
    Type of Medium: Monograph available for loan
    Pages: 58 Seiten, 10 Blätter , Illustrationen
    Language: English
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  • 16
    Call number: MOP 45224 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 221 Seiten , Illustrationen
    Language: Russian , English
    Note: Zusammenfassung in englischer Sprache , In kyrillischer Schrift
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  • 17
    Monograph available for loan
    Monograph available for loan
    Tokyo : University of Tokyo Press
    Call number: MOP 45324(1) / Mitte ; MOP 45324(2) / Mitte
    Type of Medium: Monograph available for loan
    Pages: 16, 549 Seiten
    Language: English
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  • 18
    Monograph available for loan
    Monograph available for loan
    Urbana : Illinois State Water Survey
    Call number: MOP 45166
    Type of Medium: Monograph available for loan
    Pages: 57 Seiten
    Language: English
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  • 19
    Call number: AWI P6-82-0347
    Type of Medium: Monograph available for loan
    Pages: xi, 59 Seiten
    Language: English
    Note: CONTENTS Membership of the SCAR Group of Specialists (EAMREA) Preface Preface to 1977 unpublished report of the SCAR Group of Specialists (EAMREA) 1. Introduction 1.1 Terms of reference 1.2 Environmental impact statements 2. Assessment of mineral resource potential in Antarctica 3. Present knowledge of mineral occurrences and mineral resources of Antarctica 3.1 Assessment of onshore mineral resource potential 3.2 Estimation of regional mineral potential Geological factors Logistic factors Economic factors 3.3 Commodity classification Local consumption Metallic minerals Non-metallic minerals Fossil fuels (excluding petroleum) Geothermal energy Minerals for export Non-metallic minerals and fossil fuels Metallic minerals 3.4 Probable areas of Antarctica for onshore mineral exploration and exploitation 3.5 Offshore mineral potential of Antarctica 3.6 The continental shelf of Antarctica as a source of hydrocarbons 3.7 Problems of exploration and exploitation for hydrocarbons in the southern oceans 3.8 Economic feasibility of extracting hydrocarbons 3.9 Non-fuel mineral resource potential of the southern oceans Manganese nodules Icebergs as a fresh water resource 4. Possible environmental effects 4.1 Special features of the Antarctic environment Temperatures Winds Inversion layers The southern oceans The continental shelf Ice features Beaches Pack ice Forecasting the weather 4.2 Environmental threats to exploitable living resources Economic factors Threats to economically important species Threats to survival of species Threats to special ecosystems, habitats and communities Special habitats and communities Unique sites Summary 4.3 Impacts on the environment Oil extraction Oil extraction problems Ore mining Construction effects Terrestrial installations Sea floor installations Treatment of ores and oil Beneficiation processes Local energy sources Consequences of increased human activity Introduction of biological materials Towing of icebergs 4.4 Extent of effects Spatial effects Local effects Large-scale effects Scale of environmental effects: potential inputs Scale of environmental effects: potential consequences Temporal effects Transient effects Persistent effects 4.5 Communities and systems needing special protection Soils Abiotic soils Dry soils Maritime Antarctic soils Frozen soils Lakes and streams Terrestrial vegetation Terrestrial fauna 4.6 Impacts beyond the Antarctic Climatic change from industrial activities Air borne pollution from Antarctica Water borne pollution from Antarctica 5. Further research activities 5.1 Gaps in knowledge Environment Soils Terrestrial biota Climate Meteorology Oceanography Marine biology 5.2 Research needs Biodegradability of oil Controlled oil spills Chemical effects Experimental perturbations Controlled ecosystem experiments Surveys 5.3 Special protective measures Industrial controls Improved weather forecasting Legislative controls Routine monitoring Appendices A Recommendation VIII-14 of the Eighth Antarctic Treaty Meeting B SCAR Reponse to Recommendation VIII-14, including terms of reference of the EAMREA Group of Specialists References
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  • 20
    Monograph available for loan
    Monograph available for loan
    [Erscheinungsort nicht ermittelbar] : [Verlag nicht ermittelbar]
    Call number: MOP 44941 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 24 Seiten
    Language: English
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  • 21
    Call number: MOP 44943 / Mitte
    Type of Medium: Monograph available for loan
    Language: English
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  • 22
    Call number: MOP 44317 / Mitte
    In: Developments in atmospheric science, 6
    Type of Medium: Monograph available for loan
    Pages: 113 Seiten , Illustrationen
    ISBN: 0444414894
    Series Statement: Developments in atmospheric science 6
    Language: English
    Note: Contents Preface CHAPTER 1. AIR TEMPERATURE AND SENSIBLE HEAT TRANSFER 1.1. Methods of temperature measurement 1.2. Sources of error in temperature measurement 1.3. Sensor thermal inertia Experiment I. Thermal inertia of a thermometer Experiment II. Measurement of the heat transfer coefficient for a plane surface 1.4. The effect of radiation on temperature sensors Experiment III. Effect of radiation on shielded thermometers 1.5. Electrical resistance thermometers Experiment IV. The dissipation of heat from a resistance thermometer 1.6, A ventilated shield for resistance thermometers CHAPTER 2. SOLAR AND TERRESTRIAL RADIATION 2.1. Specific intensity and radiant flux density 2.2. Radiation scales 2.3. The fluxes of solar and terrestrial radiation Experiment V. The measurement of radiation by a thermometric method 2.4. Radiation instruments Experiment VI. Calibration of a pyranometer against a pyrheliometer 2.5. Lambert's or the Cosine Law Experiment VII. Cosine response of a radiometer 2.6. Direct beam and diffuse calibrations for a radiometer Experiment VIII. Dependence of albedo on solar elevation 2. 7. Radiation measurements over finite plane surfaces Experiment IX. Measurement of the albedo over finite surfaces Experiment X. The measurement of long- and short-wave radiation fluxes Experiment XI. A basic pyrheliometer 2.8. The extra-terrestrial solar flux Experiment XII. Determination of the solar constant CHAPTER 3. AIR AND WATER VAPOUR PRESSURE 3.1. Atmospheric pressure 3.2. Liquid column barometers Experiment XIII. A short water barometer 3.3. Aneroid barometers Experiment XIV. The isothermal atmosphere 3.4. Atmospheric humidity 3.5. Parameters specifying humidity 3.6. The mEasurement of humidity Experiment XV. Observation of the dew point Experiment XVI. The hair hygrometer 3.7. Ory- and wet-bulb thermometry and the psychrometer Experiment XVII. The ventilated wet-bulb thermometer Experiment XVIII. Measurement of the Bowen ratio CHAPTER 4. WIND VELOCITY AND TURBULENT TRANSFER 4.1. Methods of wind speed measurement Experiment XIX. The comparison of anemometers 4.2. The wind velocity profile in the atmospheric boundary layer Experiment XX. Observation of the mean wind profile Experiment XXI. The effect of obstructions on the wind profile Experiment XXII. Determination of momentum transfer by the eddy correlation method 4.3. The scale of turbulence Experiment XXIII. The time scale of turbulent fluctuations 4.4. Turbulent transfer Experiment XXIV. Turbulent transfer of heat and water vapour CHAPTER 5. GROUND TEMPERATURE AND HEAT CONDUCTION 5.1. Methods of ground temperature measurement 5.2. Thermo-electric effects 5.3. The theory of ground heat conduction Experiment XXV. Determination of thermal diffusivity from temperature profile observation Experiment XXVI. Diurnal temperature and heat flux waves in the ground 5.4. Heat flux meters 5.5. Thermopiles Experiment XXVII. Calibration of a heat flux meter Experiment XXVIII. Comparison of temperature and heat flux waves CHAPTER 6. ELECTRICAL ANALOGUE MODELLING OF THERMAL PROCESSES 6.1. Steady state heat conduction 6.2. The performance of a heat flux meter Experiment XXIX. Analysis of the steady state response of a heat flux meter - using conducting paper 6.3. Thermal diffusion Experiment XXX. Modelling of temperature waves in the ground 6.4. Simulation of latent heat processes Experiment XXXI. The growth of ice floating on water 6.5. Sensible heat transfer in the atmospheric boundary layer 6.6. Long-wave radiation transfer simulation Experiment XXXII. A micro-meteorological model REFERENCES INDEX
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  • 23
    Monograph available for loan
    Monograph available for loan
    Oak Ridge, Tenn. : U.S. Department of Energy
    Call number: MOP 44436 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 15, 3, 5 Seiten
    Language: English
    Note: The field experiments were continued to estimate convective storm particulate scavenging efficiency in proximity to the St. Louis, Missouri urban-industrial complex. Complementary studies of the urban aerosol characterization, source strength, and removal processes were also studied. The 1975 field effort shifted emphasis from the immediate St. Louis area to the Alton-Wood River industrial complex. Along with the change in size and configuration of the network, there were increases in the numbers of most types of samplers. The new network yielded the following types of samples for analysis and interpretation: 1065 total rain samples from 85 sites; 68 sequential rainwater samples from 2 locations; 272 wet/dry samples from 7 locations; 216 air filter samples from 7 locations; 36 air filter samples from aircraft; and raindrop spectrometer data from 11 sites for the period 17 June-18 August. The analysis procedures require that all water samples undergo filtering for separate analyses of soluble and insoluble fractions of the elemental concentrations. This data collection effort provided a record number of samples for chemical analysis. Approximately 4000 pibals and over 370 radiosondes were released in the operational period, providing wind and thermodynamic data on 33 days. Aircraft missions were flown on 24 days, with one air tracer release of cesium on 19 July 1975. The status of the analysis of all types of data is described.
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  • 24
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
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    Call number: ZSP-202-17
    In: Research report / Cold Regions Research and Engineering Laboratory, 17
    Description / Table of Contents: Summary: The ice-cored moraine which occurs on the margin of the Greenland Ice Cap, east of Thule Air Base, was investigated during the summers of 1954 and 1955. A synthesis of the field data gathered leads to the following conclusions: 1.) The outer zone of the ice margin is composed of stagnant ice which acts as a barrier to movement of mobile ice from the interior. 2.) The mobile ice overrides the barrier zone in a series of high angle imbricate shears. 3.) These shears carry old ground moraine from the subglacial floor toward the surface. 4.) Differential ablation on the surface results in the formation of ice-cored moraine ridges, parallel to the strike of the shear. 5.) Recent stagnation and recession of the ice margin in the Thule area has resulted in the formation of a belt of successive shear moraines. 6.) Geomorphic processes in addition to ablation (particularly wind action) control the surface expression of the shear moraines. 7.) Subglacial topography is the primary control on the trend of both ice edge and moraine ridges. 8.) The complex Thule Ramp shear moraine has resulted from a faster-moving ice mass to the north overriding the Thule Ramp ice. 9.) The prominent ice cliffs are manifestations of erosion by wind and water. 10.) The tunnel in the Thule Ramp ice cliff indicates a former development of shear moraine in the area. 11.) Structural and geomorphic features indicate glacial cycles in the area of both long and short duration. 12.) The shear moraines in the Thule area offer a possible explanation for the mode of ground moraine deposition in some areas of continental glaciation during the late Pleistocene. The work done in 1954 and 1955 was in the nature of a glacial geomorphologic reconnaissance. Intensive study remains to be done, particularly in the Thule Ramp area, on ice structure, movement, and ablation before a complete understanding of both present and past glacial regimes can be reached.
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    Pages: vi, 46, [2] Seiten , Illustrationen , 27 cm
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 17
    Language: English
    Note: CONTENTS Introduction I. Physiographic description of study area II. Structure of the marginal zone of the ice cap III. Geomorphologic processes IV. Recent glacial history of the ice margin
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    Call number: ZSP-202-18
    In: Research report / Cold Regions Research and Engineering Laboratory, 18
    Description / Table of Contents: Summary: Various strength properties of naturally compacted high-density snows, in the density range of from 0.40 to 0.75 g/cm^3, are reported. Test results are given for: unconfined compression; unconfined and confined double shear; ring, flexural, and centrifugal tensile strength; torsional shear; and work of disaggregation. The work of disaggregation per unit volume was related to crushing, tensile, and shear strength at various lateral pressures, using the same empirical relationship. The results of the various tests measuring the tensile strength of the snow compare favorably with each other. An attempt was made to use the direct shear strength results in Coulomb’s equation for the determination of Mohr’s envelope of rupture for snow. These tests yield higher values than those obtained in unconfined compression tests. However, angles of internal friction obtained considering Mohr’s envelope to be straight line seem to agree with measurements taken on an unconfined compression specimen.
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    Pages: 19 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 18
    Language: English
    Note: CONTENTS Page Preface Summary Introduction Temperature correction factors Crushing strength Tensile strength · Shear strength Torsional shear strength Work of disaggregation of snow Angle of internal friction and apparent unit cohesion Discussion of results References
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  • 26
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    Call number: ZSP-202-20
    In: Research report / Cold Regions Research and Engineering Laboratory, 20
    Description / Table of Contents: Summary: Investigations on sea ice at Hopedale, Labrador, March 1956, included: small beam tests and in-place cantilever beam tests for flexural strength; ring tensile-strength tests; unconfined compression tests, with stress-strain studies to determine "Young's modulus"; and double shear tests. The results exhibit a great deal of scatter, primarily due to the inhomogeneity of sea ice. Ring tensile strength values range between 3.3 kg/cm^2 and 22.3 kg/cm2 between -2.5°C and -19.1°C. The small beam tests give flexural strength values from 0.5 to 17.3 kg/cm^2 in a similar temperature range. The in-place pull-up cantilever beam tests give flexural strength values of 2.2 to 4.0 kg/cm^2, with much less scatter. Crushing strength values range from 26.3 to more than 107 kg/cm^2 in the range -4.9°C to -18.3°C. Values for Young's modulus obtained from the slope of the straight line portion of the stress-strain curves in compression ranged between 4520 and 10,225 kg/cm^2. There is a temperature dependence, explained by the effect of change in brine content, on sea-ice structure. The double shear tests give values of 7.8 to 34.2 kg/cm^2 in the range -5.5°C to -12.8°C. These are higher than the tensile-strength values. These failures occurred normal to the direction of growth, while the tensile strength was obtained with failure parallel to it.
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    Pages: 15 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 20
    Language: English
    Note: CONTENTS Page Preface Summary Introduction Ring tensile strength Flexural strength of small beams Flexural strength of inplace beams Crushing strength Shear strength Discussion of results References
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  • 27
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    Call number: ZSP-202-36
    In: Research report / Cold Regions Research and Engineering Laboratory, 36
    Description / Table of Contents: Summary: Measurements were made with 22 more or less hydrophobic polymers and lacquers at intervals of 5 or 10 min for periods up to 1 hr. All surfaces were carefully cleaned, and some surfaces were baked. Highest initial (time 0) average contact angles ( 106° - 106.6°) were measured for Foster Snell rain repellant wax, Barrett 25-218 water repellant varnish (air-dried), and Cardolite NRL-7241. After 40 min, contact angles for these substances were 95.6°, 90.9°, and 91.0°. The measurement apparatus is illustrated, and data are tabulated.
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    Pages: ii, 11 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 36
    Language: English
    Note: CONTENTS Preface Summary Introduction Experimental Apparatus Materials Procedure Experimental results References
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    Call number: ZSP-202-41
    In: Research report / Cold Regions Research and Engineering Laboratory, 41
    Description / Table of Contents: Summary: Laboratory experiments on the creep of sifted snow under uniaxial, hydrostatic, and confined-side compressive stresses are described, and the results are discussed on the basis of an additive theory for combined stresses. Stress (4-40 psi) and temperature (-3.6°C to -13.6°C) dependence was investigated for 35 samples (initial density = 0.4 g/cm^3) subjected to uniaxial and hydrostatic stress for 200-sec time increments. Another series of 104 samples (initial densities 0.36-0.63) was subjected to uniaxial, hydrostatic, and confined-side compressive stresses until an arbitrary change in density was reached. In all cases the applied stress ultimately became a shear stress acting between grains, the open structure reacting differently to combined stresses and separate uniaxial stresses. An activation energy of 13,400 cal/mol was obtained from the first group of tests.
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    Pages: iv, 12 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 41
    Language: English
    Note: CONTENTS Preface Summary Introduction Experimental General Apparatus Procedure Theoretical relations Additive theory Relationship between tests run for constant change in density and tests for constant time Results and discussion Group I experiments Group II experiments Stress dependence for group II tests Variability Time dependence Activation energy Relations between creep rates under different stress conditions Density dependence Lateral stress for confined-side tests Conclusions References
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    Call number: ZSP-202-39
    In: Research report / Cold Regions Research and Engineering Laboratory, 39
    Description / Table of Contents: Summary: An analysis of snow-cover density, temperature, and hardness data, measured over a period of several years at five stations in Alaska and six stations in the Canadian Arctic, shows the snow cover in the Canadian Archipelago to be colder, denser, and harder than in the interior of Alaska. A series of nomographs were developed to estimate average monthly snow-cover density from mean monthly air temperature and wind velocity. The nomographs are applicable for the months November through March, for the Alaskan and Canadian area north of 62°N latitude, and for elevations below 1500 ft. A comparison of observed snow-cover densities with those derived from the nomographs indicates that the method will provide a reliable regional estimate of snow-cover density. Studies of the relation between snow-cover temperature and air temperature from November through March disclosed the snow to be on the average from 4°C to 9°C warmer than the air at the Alaskan stations and 4.5°C warmer at the Canadian Archipelago stations. An investigation of snow-cover hardness revealed regional variations similar to that for density. Measured snow hardness during the period of no melting was found to be related to densities between 0.15 and 0.36 g/cm^3.
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    Pages: iv, 9 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 39
    Language: English
    Note: CONTENTS Preface Summary Introduction Climatic parameters which may affect arctic snow-cover density Results of study Regional variations in snow-cover density Prediction of average monthly snow-cover density in the arctic from air temperature and wind velocity Comparison of observed snow-cover density with density computed from the nomographs Relation between snow-cover temperature and air temperature Relation between hardness and density of the snow cover References
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    Call number: ZSP-202-37
    In: Research report / Cold Regions Research and Engineering Laboratory, 37
    Description / Table of Contents: Summary: Laboratory experiments on the air permeability of various screened and natural snows are described, and, results are analyzed to determine whether the parameters obtained from the measurements could be used to define a snow type. The permeability of a snow sample of known porosity (calculated from density) was determined over a wide range of air velocities; the sample was then compacted artificially a few mm, its density was determined, and its permeability measured again. The procedure was used to obtain curves for several densities of the same sample. Air flow appeared laminar for velocities less than 5 cm/sec in fine-grained snow (less than 0.8 mm in diam.), 2 cm/sec in medium-grained snow (0.8-1.2 mm diam.), and 1 cm/sec in larger-grained snow. A formula is presented expressing all of the results obtained under laminar-flow conditions in a single relationship, and an equation for estimating grain size from initial permeability and initial porosity is suggested. Snow conversion tables and a discussion of the effect of varying sample porosity on its permeability are appended.
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    Pages: iv, 19, A2, B6 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 37
    Language: English
    Note: CONTENTS Page Preface Summary Introduction Apparatus and method Experimental results and discussion Historical background Range of Darcy's law Effect of porosity on the permeability of snow Bader's equation Conclusion References Appendix I. Snow conversion table: Density to absolute porosity Appendix II. Effect on permeability of varying porosity in the sample Porosity varies with length Porosity varies with cross section
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    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
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    Call number: ZSP-202-43
    In: Research report / Cold Regions Research and Engineering Laboratory, 43
    Description / Table of Contents: Summary: Charts of mean annual air temperature and precipitation over the ice cap are constructed on the basis of snow-profile studies at 8 locations, data collected for several years after 1953 at two U.S. Air Force weather stations, and records from expeditions since 1930. The warming trend in the Arctic appears to have occurred to a lesser degree on the ice cap, possibly because of the effect of the snow cover. The lowest mean annual temperature in South Greenland is estimated to occur within the area bounded by the 2500 m contour and the -18°C isotherm; mean annual temperature at 2700 is estimated as -20.9°C. In North Greenland, the mean annual temperature at 1700 m is estimated at -22°C. The presence of ice glands in the snow and daily max summer temperatures, estimated from records of coastal stations, indicate a potentially high incidence of melting at about 1300 m elevation and some melting at 1700 m in North Greenland, and melting up to 2700 m in the South. Annual accumulation is 2-3 times as great at 2500 m on the west side of the ice cap as at the crest. South of 66°N, precipitation may be about twice as great on the east side of the crest as in the west.
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    Pages: iv, 9 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 43
    Language: English
    Note: CONTENTS Preface Summary Introduction Derivation of mean annual air temperature data Annual accumulation References
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    Call number: ZSP-202-52
    In: Research report / Cold Regions Research and Engineering Laboratory, 52
    Description / Table of Contents: Summary: The results of studies on the physical properties of fog whiteout, as it occurred at Site 2 on the Greenland Ice Cap in the summers of 1956 and 1957, are reported and compared with the results of other studies; the instruments, methods of measurement, and data-reduction techniques used are described; and attempts at dissipating whiteout by AgI (silver iodide) seeding are discussed briefly. Emphasis was given to measurements of fog-particle size distribution, liquid-water content, relative humidity, visibility, and atmospheric nuclei. The data are tabulated. The synoptic situations for 2 selected cases of fog whiteout at relative humidities of less than 100% (possibly because of the presence of salt solutions) are described; and the balance between the rate at which water is made available in the air as it is lifted over the Ice Cap and the rate of water flux to the snow surface is computed using various equations. Efforts at fog dispersal by AgI seeding from the ground were inconclusive.
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    Pages: iv, 18, A1 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 52
    Language: English
    Note: CONTENTS Preface Summary Introduction Definition of whiteout Scope of this study Instrumentation and observations Location of project: Fog particle measurements Atmospheric humidity measurements Visibility measurements Air temperature measurements Radiation measurements Atmospheric nuclei Observations of fog whiteout Conditions prior to onset of whiteout Conditions at time of arrival and during whiteout Micro-structure of fog whiteout Analysis of moisture balance during two selected cases Synoptic situation for case 1 Synoptic situation for case 2 Computations Attempts at fog whiteout dispersal References Appendix A - Freezing nuclei observations Appendix B - Absolute humidity gradient data
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    Call number: ZSP-202-55
    In: Research report / Cold Regions Research and Engineering Laboratory, 55
    Description / Table of Contents: Summary: Experiments were performed to investigate the processes involved in the formation of sorted patterns which occur naturally in unconsolidated sandy gravel deposits covering the edge of the ice cap southeast of Thule, northwest Greenland. Four different glacier ice surfaces were covered with various thicknesses of sandy gravel in order to observe the effect of differential melting on the formation of sorted patterns. The different stages of pattern formation were recorded by photographs taken at 7-day intervals. A thin gravel cover of 2 in. allowed more rapid melting than did a cover of 6 in., with the result that depressions and mounds were formed. Coarse particles were segregated in the depressions by natural sorting of the various particle sizes when set in motion by differential melting and resulting uneven collapse of the gravel cover. The sorting produced well-developed stone rings in three of the areas, caused directly by the differential insulation provided by the gravel cover. In the fourth area a uniform gravel cover over a smooth ice surface produced no sorted nets, although a poorly developed stone stripe was formed in a melt-stream channel. A stone stripe was also formed in a stream channel cut into the ice along the edge of the test area. This stripe was composed of coarse particles which rolled down from the better insulated heights of the test area. It is therefore possible that sorted nets and stripes occurring naturally in the moraine deposits on the edge of the ice cap could have been formed by mechanical sorting induced by differential melting of the ice under a non-uniform layer of sandy gravel.
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    Pages: iv, 15 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 55
    Language: English
    Note: CONTENTS Preface Summary Introduction Procedure Preparation of test plots Measurements of ice and gravel surfaces Composition of the gravel covering Results Sorting in a smooth layer of sandy gravel over an uneven ice surface Sorting in a uniform layer of sandy gravel over depressions in the ice surface Sorting in a uniform layer of sandy gravel over a uniform ice surface Sorting in a non-uniform layer of sandy gravel over a uniform ice surface Discussion and recommendations Conclusions References
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    Call number: ZSP-202-56
    In: Research report / Cold Regions Research and Engineering Laboratory, 56
    Description / Table of Contents: Summary: The results of laboratory creep tests in a shear apparatus at -5°C on 2 x2 x 3/8 in. samples of commercial ice, artificial single crystals, and 6 types of ice from the Greenland Ice Cap, at shear stresses of about 0.5-3 kg/cm^2 are reported. Some uniaxial tests were made at stresses from 6-28 kg/cm^2 to supplement the shear tests. Creep data could usually be represented approximately by one or more linear sections on a log-deformation vs log-time plot. The linear sections of the double logarithmic curve imply a creep curve of the form ε=ct^m where ε is the strain. For all samples tested, except single crystals sheared in easy glide, m averaged 0. 5 for shear deformations up to about 1%, and approached unity for more deformation. For single ice crystals oriented for easy glide, m averaged 1.7, implying a strain softening. Single crystals oriented for hard glide behaved similarly to polycrystals, indicating a rate-controlling process such as dislocation climb. For all but single easy-glide crystals, the minimum creep rate was tangent to the deformation curve at the end of the experiment. Creep rates for single easy-glide crystals were several hundred times larger than for the other crystals, the flow laws being similar.
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    Pages: iv, 7 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 56
    Language: English
    Note: CONTENTS Preface Summary Introduction Types of ice Experiments Results Creep curves Flow law References
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    Call number: MOP 44044 / Mitte
    Type of Medium: Monograph available for loan
    Pages: vi, 126 Seiten , Illustrationen , 28 cm
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    Call number: MOP 44754 / Mitte
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    Pages: 364 Seiten
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  • 37
    Call number: MOP 44126/1 / Mitte
    In: Proceedings of the tenth international symposium on remote sensing of environment, Volume 1
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    Pages: XLIX, 670 Seiten
    Series Statement: Proceedings of the tenth international symposium on remote sensing of environment 1
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    Call number: MOP 45154 / Mitte
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    Pages: X, 253, 46 Seiten , Illustrationen
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    Call number: MOP 44126/2 / Mitte
    In: Proceedings of the tenth international symposium on remote sensing of environment, Volume 2
    Type of Medium: Monograph available for loan
    Pages: Seiten XLIX, 671-1456
    Series Statement: Proceedings of the tenth international symposium on remote sensing of environment 2
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    Call number: MOP 40704 / Mitte
    Type of Medium: Monograph available for loan
    Pages: VI, 35 Seiten
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  • 41
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    Washington : Special Committee for Solar-Terrestrial Physics (SCOSTEP), National Academy of Sciences
    Call number: MOP 43858/1 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 142 Seiten , Illustrationen , 28 cm
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    Washington : Special Committee for Solar-Terrestrial Physics (SCOSTEP), National Academy of Sciences
    Call number: MOP 43858/2 / Mitte
    Type of Medium: Monograph available for loan
    Pages: II, 146 Seiten
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    Washington : Special Committee for Solar-Terrestrial Physics (SCOSTEP), National Academy of Sciences
    Call number: MOP 43858/3 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 132 Seiten , 28 cm
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    Boulder, Colo. : The Geological Society of America
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    Call number: S 90.0095(180)
    In: Special paper / The Geological Society of America, 180
    Type of Medium: Series available for loan
    Pages: 211 Seiten , Illustrationen, graphische Darstellungen
    ISBN: 0-8137-2180-6
    Series Statement: Special paper / The Geological Society of America 180
    Language: English
    Note: Introduction / Charles E. Chapin and Wolfgang E. Elston References cited Ash-flow magmatism / Robert L. Smith Abstract Introduction Volumes of ash-flow sheets Size of magma chambers Zoned magma chambers Crater Lake, Oregon Bandelier Tuff, New Mexico SiO₂ and phenocryst variation in ash-flow sheets Periodicity-volume-composition relationships Discussion of model Summary and conclusions Acknowledgments References cited Cooling units and composite sheets in relation to caldera structure / Robert L. Christiansen Abstract Introduction Examples of ash-flow-caldera relations Mazama eruption and Crater Lake caldera Bandelier Tuff and Valles-Toledo calderas Thirsty Canyon Tuff and Black Mountain caldera Timber Mountain-Oasis Valley caldera complex Yellowstone Plateau volcanic field General pattern of ash-flow-caldera relations Acknowledgments References cited The Bishop Tuff: Evidence for the origin of compositional zonation in silicic magma chambers / Wes Hildreth Abstract Introduction Eruptive sequence Major units Units of uncertain correlation Summary of eruptive sequence Eruptive temperatures Accuracy and precision of T-fₒ₂ data Mineralogy Fe-Ti oxides Quartz Sanidine Plagioclase Biotite Pyroxenes Allanite Zircon Apatite Pyrrhotite Whole-rock chemistry Major elements Trace elements Compositional gaps Origin of the compositional zonation Crystal settling Assimilation Basaltic underplating Liquid immiscibility Progressive partial melting Trace elements during partial melting Convection-driven thermogravitational diffusion Lines of evidence Concluding remarks Acknowledgments References cited Rare-earth-element content of some highly differentiated ash-flow tuffs and lavas / Donald C. Noble, Ward L. Rigot, and Harry R. Bowman Abstract Introduction Specimens studied and methods of chemical analysis Results and discussion Acknowledgments References cited Geochemistry of the Los Chocoyos Ash, Quezaltenango Valley, Guatemala / William I. Rose, Jr., Norman K. Grant, and John Easter Abstract Introduction Field description Geochemistry Mineralogy and mineral chemistry Sr-isotope data Modeling of crystal fractionation Time required for crystal fractionation Conclusions Acknowledgments Appendix 1. Analytical methods References cited Geochemical correlation of genetically related rhyolitic ash-flow and air-fall ashes, central and western Guatemala and the equatorial Pacific / Gregory A. Hahn, William I. Rose, Jr., and Thomas Meyers Abstract Introduction Previous investigations of chemical fingerprinting The Los Chocoyos Ash and the stratigraphic sequence of the San Cristobal Group Characteristics of the ash-flow member Sample acquisition and preparation Trace-element analyses Chemical correlation Lateral chemical variations Source of the Los Chocoyos Ash Age of the Los Chocoyos Ash Conclusions Acknowledgments References cited Ignimbrites of the Sierra Madre Occidental and their relation to the tectonic history of western Mexico / Fred W. McDowell and Stephen E. Clabaugh Abstract Introduction Volcanic stratigraphy of the Sierra Madre Occidental Pre-Cretaceous volcanic rocks Lower volcanic complex Unconformity between the igneous sequences Upper volcanic supergroup Calderas of the upper volcanic supergroup Structure of the Sierra Madre Occidental Chemistry Tectonic relationships Acknowledgments References cited Emplacement of pyroclastic flows: A review / Michael F. Sheridan Abstract Introduction Eruptions Observed pyroclastic flows Theoretical eruption models Mobility Topographic barriers Energy line Deposits Morphology Depositional sequence Textures Large clasts Deflation Compositional variation Welded peralkaline ignimbrites Emplacement temperatures Models Fluidization Speculation Summary Acknowledgments References cited Primary and secondary flow structures in ash-flow tuffs of the Gribbles Run paleovalley, central Colorado / Charles E. Chapin and Gary R. Lowell Abstract Introduction Paleovalleys and the Wall Mountain Tuff Primary flow structures Gas cavities (lenticules) Lineation Foliation Primary folds Rotated lithic fragments Imbricated crystals Secondary now structures Secondary folds and growth faults Tension cracks Miscellaneous structures Steam spiracles Conclusions Acknowledgments References cited Welded air-fall tuffs / R.S.J. Sparks and J. V. Wright Abstract Introduction Field relationships Santorini, Greece The 1875 Askja welded tuffs, Iceland Other examples Petrology and chemistry Grain-size studies Santorini welded tuffs Askja welded tuff Compaction and welding Strain, bulk density, and porosity measurements Results for Santorini welded tuffs Results for Askja welded tuff Discussion Acknowledgments References cited Globule ignimbrite of Mount Suswa, Kenya / R. L. Hay, W. Hildreth, and R. N. Lambe Abstract Introduction Scope and purpose of study Geologic setting and previous work Description and field relationships Ignimbrite petrography Vitric materials Crystals and rock fragments Devitrification and gas-phase crystallization Low-temperature alteration Nature of lower ignimbrite sheet Nature of the magma Chemical composition Temperature and viscosity Emplacement of ignimbrite and origin of globules Acknowledgments References cited A model of pyroclastic surge / K. H. Wohletz and M. F. Sheridan Abstract Introduction Terminology Objectives and methods of study Deposits Bed forms Locations Results Pyroclastic-surge facies Discussion and conclusions Development of bed forms Reconstruction of the surge cloud A model of pyroclastic surge: Its fluidization and deflation Acknowledgments References cited Significance of the flattening of pumice fragments in ash-flow tuffs / Donald W. Peterson Abstract Introduction Pumice fragments in the Apache Leap Tuff Recognition and description of pumice fragments Flattening of the pumice Applications of the flattening studies Recognition of cooling units Implications of extreme flattening Determination of stratigraphic level and fault displacement Commercial application of flattening ratios Determination of the degree of welding Pumice flattening as a possible guide to relative temperature of emplacement and rate of accumulation Conclusions Acknowledgments References cited Ash-flow sheets and calderas: Their genetic relationship to ore deposits in Nevada / Edwin H. McKee Abstract Introduction Metal deposits in volcanic-tectonic systems Resurgent cauldrons Geologic setting Parameters of study Distribution of mines and ash-flow sheets Distribution of mines and calderas Discussion Acknowledgments References cited
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    New York : McGraw-Hill
    Call number: 6286
    Type of Medium: Monograph available for loan
    Pages: XIV, 280 Seiten , Illustrationen
    Series Statement: International series in pure and applied physics
    Language: English
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  • 46
    Call number: AWI G4-22-94988
    Type of Medium: Monograph available for loan
    Pages: 130 Seiten , Illustrationen , Errata , 28 cm
    Series Statement: Annual progress report / Sanitary Engineering Research Laboratory, University of California 1
    Language: English
    Note: TABLE OF CONTENTS I INTRODUCTION II SUMMARY OF METHODS OF GROUND WATER DETECTION A. Geophysical Methods Gravimetric Method Magnetic Method Seismic Method Electrical Resistivity Method Electrical, Radioactive and Temperature Logging Methods B. Tracer Methods Dyes as Ground Water Tracers Tracers Detected by Chemical Determinations Radioactive Tracers III LABORATORY AND FIELD STUDIES OF GROUND WATER TRACERS Ion Exchange in Soils Lysimeter Studies of Fluorescein, Chloride and Iodine-131 Comparison of Stable and Radioactive Calcium Tritium Studies Injection Well Studies of Fluorescein, Dextrose, and Iodine-131 IV CONCLUSIONS AND RECOMMENDATIONS A. Geophysical Methods B. Tracer Methods V ABSTRACT OF LITERATURE PERTAINING TO GROUND WATER DETECTION A. Geophysical Methods B . Tracer Methods
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  • 47
    Monograph available for loan
    Monograph available for loan
    Washington : Department of Meteorology and Climatology, Univ.
    Call number: MOP 25529
    Type of Medium: Monograph available for loan
    Pages: VII, 57 S. , graph. Darst., Kt.
    Series Statement: AF contract 19(604) 3063
    Language: English
    Location: MOP - must be ordered
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  • 48
    Series available for loan
    Series available for loan
    Washington : Dept. of Meteorology and Climatology, Univ.
    Associated volumes
    Call number: MOP 25776
    In: Scientific report / Department of Meteorology and Climatology, University of Washington, No. 4
    In: Occasional report / Department of Meteorology and Climatology, University of Washington, No. 12
    Type of Medium: Series available for loan
    Pages: VIII, 52 S. , graph. Darst.
    Series Statement: Scientific report / Department of Meteorology and Climatology, University of Washington 4
    Language: English
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  • 49
    Series available for loan
    Series available for loan
    Washington : Dept. of Meteorology and Climatology, Univ.
    Associated volumes
    Call number: MOP 25773
    In: Occasional report / University of Washington, Department of Meteorology and Climatology, No. 9
    Type of Medium: Series available for loan
    Pages: 64 S. , graph. Darst., Kt
    Series Statement: Occasional report / University of Washington, Department of Meteorology and Climatology 9
    Language: English
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  • 50
    Call number: SR 90.0081(271)
    In: Reports of the Department of Geodetic Science and Surveying
    Type of Medium: Series available for loan
    Pages: 84 S.
    Series Statement: Report / Department of Geodetic Science, the Ohio State University 271
    Language: English
    Location: Lower compact magazine
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  • 51
    Call number: MOP 45060 / Mitte
    In: Research report
    Type of Medium: Monograph available for loan
    Pages: VII, 42 S.
    Series Statement: Research report / Institute of Applied Systems Analysis 1979, 11
    Language: English
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  • 52
    Series available for loan
    Series available for loan
    Garmisch-Partenkirchen : Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung
    Call number: MOP 41087 / Mitte
    Type of Medium: Series available for loan
    Pages: 33 Seiten, [14] Blätter , Illustrationen
    Series Statement: Scientific report / Institute for Atmospheric Environmental Research 10
    Language: English
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  • 53
    Call number: PIK N 630-15-89556
    Type of Medium: Monograph available for loan
    Pages: 62 S. , zahlr. Ill.
    Edition: 1. print.
    Language: English
    Location: A 18 - must be ordered
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  • 54
    Call number: M 17.90769
    Type of Medium: Monograph available for loan
    Pages: vii, 437 Seiten , Illustrationen, graphische Darstellungen, Karten
    Series Statement: Maurice Ewing series 3
    Language: English
    Note: [Teil 1]Ocean crust.. , [Teil 2]Continental margins and paleoenvironment..
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  • 55
    Monograph available for loan
    Monograph available for loan
    Boulder, Colo. : The Geological Society of America
    Associated volumes
    Call number: AWI G2-17-91266
    In: Memoir / The Geological Society of America, 145
    Type of Medium: Monograph available for loan
    Pages: X, 464 S , graph. Darst., Kt , 1 Kt.-Beil., 3 Mikrofiches
    ISBN: 0813711452
    Series Statement: Memoir / The Geological Society of America 145
    Language: English
    Note: Contents: Preface. - ATLANTIC. - New transfer function for estimating past sea-surface conditions from sea-bed distribution of planktonic foraminiferal assemblages in the North Atlantic / Nilva G. Kipp. - Glacial North Atlantic 18,000 years ago: a CLIMAP reconstruction / Andrew Mclntyre and Nilva G. Kipp with Allen W. H. Bé, Thomas Crowley, Thomas Kellogg, James V. Gardner, Warren Prell, and William F. Ruddiman. - Late Quaternary climatic changes: Evidence from deep-sea cores of Norwegian and Greenland Seas / Thomas B. Kellogg. - Northeast Atlantic paleoclimatic changes over the past 600,000 years / W. F. Ruddiman and A. Mclntyre. - O18 record of the Atlantic Ocean for the entire Pleistocene Epoch / Jan van Donk. - Late Quaternary climatic record in western equatorial Atlantic sediment / Allan W. H. Bé, John E. Damuth, Leroy Lott, and Rosemary Free. - Late Pleistocene faunal and temperature patterns of the Colombia Basin, Caribbean Sea / Warren L. Prell and James D. Hays. - Responses of sea-surface temperature and circulation to global climatic change during the past 200,000 years in the eastern equatorial Atlantic Ocean / James V. Gardner and James D. Hays. - Equatorial Atlantic and Caribbean foraminiferal assemblages, temperatures, and circulation: Interglacial and glacial comparisons / Warren L. Prell, James V. Gardner, Allan W. H. Bé, and James D. Hays. - Corresponding patterns of contemporary pollen and vegetation in central North America / T. Webb III and J. H. McAndrews. - ANTARCTIC. - Relationship of radiolarian assemblages to sediment types and physical oceanography in the Atlantic and western Indian Ocean sectors of the Antarctic Ocean / Jose A. Lozano and James D. Hays. - Reconstruction of the Atlantic and western Indian Ocean sectors of the 18,000 B.P. Antarctic Ocean / James D. Hays, Jose A. Lozano, Nicholas Shackleton, and Grace Irving. - PACIFIC. - Late Quaternary sediment of the Panama Basin: Sedimentation rates, periodicities, and controls of carbonate and opal accumulation / Nicklas G. Pisias. - Late Quaternary accumulation rates of opal, quartz, organic carbon, and calcium carbonate in the Cascadia Basin area, northeast Pacific / G. Ross Heath, Ted C. Moore, Jr., and J. Paul Dauphin. - Glacial advance in the Gulf of Alaska area implied by ice-rafted material / Roland von Huene, Jim Crouch, and Edwin Larson. - Modern Pacific coccolith assemblages: Derivation and application to late Pleistocene paleotemperature analysis / Kurt R. Geitzenauer, Michael B. Roche, and Andrew Mclntyre. - Oxygen-isotope and paleomagnetic stratigraphy of Pacific core V28-239 late Pliocene to latest Pleistocene / N. J. Shackleton and N. D. Opdyke.
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  • 56
    Call number: MOP Per 800(620)
    In: WMO, 620
    In: Technical note, 180
    Type of Medium: Monograph available for loan
    Pages: 99 S.
    Series Statement: WMO / World Meteorological Organization 620
    Language: English
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  • 57
    Monograph available for loan
    Monograph available for loan
    Stuttgart : Schweizerbart Science Publishers ; Volume 1, number 1 (1978)-
    Call number: M 18.91571
    Type of Medium: Monograph available for loan
    Pages: 134 Seiten
    ISSN: 2363-7196
    Series Statement: Global tectonics and metallogeny : special issue Vol. 10/2-4
    Classification:
    Tectonics
    Parallel Title: Erscheint auch als Global tectonics and metallogeny
    Language: English
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  • 58
    Monograph available for loan
    Monograph available for loan
    Hannover : Bundesanstalt für Geowissenschaften und Rohstoffe
    Call number: AWI G2-19-92031
    Type of Medium: Monograph available for loan
    Pages: 3 Seiten, 1 Karte , einfarbig
    Language: English
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  • 59
    Call number: AWI E3-19-92032
    Type of Medium: Monograph available for loan
    Pages: 7 Seiten , Illustrationen
    Language: English
    Note: Contents: 1. Introduction. - 2. Design of the existing base. - 3. Why a new concept. - 4. Considerations for a new base. - 5. Building alternatives for a floating ice shelf. - 6. Design criteria. - 7. Concept adopted. - 8. Technical data. - 9. Services. - 9.1. Electrical. - 9.2. Mechanical. - 9.3. Fire Protection. - 9.4. Toilets. - 10. Stores. - 11. External buildings. - 12. Conclusion.
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  • 60
    Call number: ZSP-201-76/30
    In: CRREL Report, 76-30
    Description / Table of Contents: The focus of this investigation was to assess the utility of remote sensing techniques in the study of land use-water quality relationships in an east central Wisconsin test area. The following types of aerial imagery were evaluated for this purpose: high altitude (60,000 ft) color, color infrared, multispectral black and white, and thermal; low altitude (less than 5000 ft) color infrared, multispectral black and white, thermal, and passive microwave. A non-imaging hand-held four-band radiometer was evaluated for utility in providing data on suspended sediment concentrations. Land use analysis includes the development of mapping and quantification methods to obtain baseline data for comparison to water quality variables. Suspended sediment loads in streams, determined from water samples, were related to land use of dfferences and soil types in three major watersheds. A multiple correlation coefficient R of 0.85 was obtained for the relationship between the 0.6-.7 incident and reflected radiation data from the hand-held radiometer and concurrent ground measurements of suspended solids in streams. Applications of the methods and baseline data developed in this investigation include: mapping and quantification of land use; input to watershed runoff models,estimation of effects of land use changes on stream sedimentation; and remote sensing of suspended sediment content of streams. High altitude color infrared imagery was found to be the most acceptable remote sensing technique forthe mapping and measurement of land use types.
    Type of Medium: Series available for loan
    Pages: vi, 53 Seiten , Illustrationen
    Series Statement: CRREL Report 76-30
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric (SI) units of measurement lntroduction Objectives Approach and project history Study area Physical setting Cultural setting Documented pollution sources in the study area Evaluation of imagery Photographic imagery Thermal imagery PMIS imagery Land use analysis Analysis of 1972 imagery Analysis of 1974 imagery Soils of Manitowoc, East Twin and Oconto River watersheds Manitowoc River watershed East Twin River watershed Oconto River watershed Water quality data Manitowoc River East Twin River Oconto River Land use/stream sedimentation relationships Results and conclusions Sensor evaluation Land use analysis Mapping approaches Land use/sedimentation relationships Cost effectiveness analysis Recommendations and applications Selected bibliography Appendix A. Precipitation and temperature data
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  • 61
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/38
    In: CRREL Report, 76-38
    Description / Table of Contents: Current methods for evaluation of the moisture absorption of plastic insulations (ASTM-C-272-53 and ASTM-C-355-64) due to vapor pressure gradients or immersion rely on short time periods to predict long term performance. This procedure may not provide accurate information on performance since in practice insulations may absorb more moisture than these tests indicate. A series of tests were conducted on extruded polystyrene roof insulation that had been in place, exposed to environmental moisture and pressure gradients, for a maximum of 36 months. Results indicate that moisture absorption of 1.5% by volume can be expected in the field.
    Type of Medium: Series available for loan
    Pages: iv, 21 Seiten , Illustrationen
    Series Statement: CRREL Report 76-38
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric (SI) units of measurement Introduction Principal features of a protected membrane roof system Reported advantages of a protected membrane roof system Study sites Stevens Hall, University of Alaska, Fairbanks Building 41 5, University of Alaska, Fairbanks Building 1053, Ft. Wainwright, Alaska Gruening Building, University of Alaska, Fairbanks Consortium Library and K Building, University of Alaska, Anchorage CRREL Laboratory, Hanover, New Hampshire Resources Building, University of Alaska, Fairbanks Insulation properties Sampling Results Bulksamples Sliced samples Conclusions and recommendations Literature cited Appendix A. Moisture contents Appendix B. Photographs
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  • 62
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/40
    In: CRREL Report, 76-40
    Description / Table of Contents: Several original methods were developed to photograph artifacts in transparent materials such as ice. The artifacts, occurring in the surface, bulk, and interface, were generally 0.01 mm to 70 mm in size. Sample preparation, illumination, focusing and other technical problems are discussed in detail. Several sample photographs are included.
    Type of Medium: Series available for loan
    Pages: v, 36 Seiten , Illustrationen
    Series Statement: CRREL Report 76-40
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Equipment The microscope system The camera system Tools for preparation of sample Laboratory procedure Categorizing artifact Choosing setup Preparing sample llluminating sample Photographing artifact Results Literature cited Selected bibliography Appendix. Reference information for photomacrographic and photo-micrographic applications
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  • 63
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/26
    In: CRREL Report, 76-26
    Description / Table of Contents: Debris over a 44-mile stretch of the Chena River was studied. The study area extended from the first bridge on the Chena Hot Springs Road to the Chena River Flood Control damsite. The purpose of the study was to assess the potential danger to the Chena River Flood Control Dam outlet structure. Debris was catalogued, log jams were measured, and sources of debris were studied. The average size of logs was determined, as well as the number of logs present on the river. The authors concluded that a serious debris problem existed and would remain serious for the foreseeable future. Recommendations for debris handling were made.
    Type of Medium: Series available for loan
    Pages: iv, 17 Seiten , Illustrationen
    Series Statement: CRREL Report 76-26
    Language: English
    Note: Contents Abstract Preface Summary Introduction Origin of debris Volume, magnitude Types of debris Hazards of the debris Recommended measures to counteract log jamming Conclusions and recommendations Future work Epilogue Selected bibliography Appendix: Additional photographs of Chena River debris
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  • 64
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/29
    In: CRREL Report, 76-29
    Description / Table of Contents: In order to verify current theoretical equations on ice bearing capacity, a heavily loaded truck was used to make successive passes over two ice bridges. Equipment, weather and the normal problems associated with field work resulted in only one complete breakthrough test. Breakthrough occurred on one bridge with a vehicle weight of 53,630 lb (24,327 kg) and an ice thickness of 17.5 in. (44.5 cm). Since only one test was completed, the conclusions drawn cannot be unequivocal. However, the results do indicate that Nevel's equation for ultimate failure of a floating ice sheet is a good working tool.
    Type of Medium: Series available for loan
    Pages: iv, 19 Seiten , Illustrationen
    Series Statement: CRREL Report 76-29
    Language: English
    Note: Contents Abstract Preface Summary Introduction Location Test procedure Loading Site preparation and bridge construction Deflection measurements Conclusions Literature cited Appendix, Test data
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  • 65
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/34
    In: CRREL Report, 76-34
    Description / Table of Contents: Some physical characteristics of two grounded floebergs (fragments of multi-year pressure ridges) near Prudhoe Bay, Alaska, are described. Cross-sectional profiles of the sails and keels of both floebergs were obtained. A sail to keel ratio of 1 to 3.38 obtained with one floeberg was found to be in good agreement with previous investigations. A survey of the sea floor for evidence of scoring induced during grounding yielded a maximum depth of gouging of 1.1m. Additional studies included investigations of the internal structure of the floebergs, and a brief examination of the organic and sedimentary debris found entrained within the floebergs. The grounding of ice on the continental shelves of the Arctic is of considerable interest to those concerned with the development and impact of development of these continental shelves. The field study reported here provides information useful in assessing the nature and characteristics of interactions between floebergs and the sea bed on which they are grounded.
    Type of Medium: Series available for loan
    Pages: iii, 13 Seiten , Illustrationen
    Series Statement: CRREL Report 76-34
    Language: English
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  • 66
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/36
    In: CRREL Report, 76-36
    Description / Table of Contents: In the past decade, various workers have investigated the use of high-frequency electromagnetic radiation for breaking and excavating rock and frozen ground. This report reviews the high-frequency dielectric properties of these materials, the physics of heating, and the existing literature on these subjects. The high-frequency dielectric properties of rocks and soils, and the absorption of energy by these materials, are mainly determined by their liquid water contents. Computer modeling was used to calculate absorption energy as a function of distance behind irradiated faces of earth materials. The resulting computations showed that most energy is absorbed in the first few centimeters of frozen ground and weak soils. However, in hard rocks of low water content, electromagnetic waves penetrate more deeply, and significant amounts of energy are also absorbed tens of centimeters behind the irradiated faces. Test results showed that electromagnetic rock breakage is feasible only for excavations in hard rock; test results from the use of electromagnetic radiation for excavating tunnels in weak rocks and frozen ground are not promising.
    Type of Medium: Series available for loan
    Pages: iii, 23 Seiten , Illustrationen
    Series Statement: CRREL Report 76-36
    Language: English
    Note: CONTENTS Preface Introduction Sorption and desorption of organic contaminants Decontamination methods Aqueous cleaning methods Cleaning or rinsing with organic solvents Chemical neutralization methods Current protocols to decontaminate groundwater sampling devices Variations in methodology Special instructions for cleaning pumps Effectiveness of various decontamination methods Low-temperature considerations Conclusions Literature cited
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  • 67
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/46
    In: CRREL Report, 76-46
    Description / Table of Contents: The topological properties of 10 stream networks having moderate to well developed trellis drainage patterns have been compared with those expected in a topologically random population. Magnitude 4 subnetworks show a systematic departure from expectation which can be related to geological controls. A link type classification system was developed and a series of equations describing the probability of occurrence of link types in topologically random populations derived. Analysis of the link structure in the channel networks showed small but persistent deviations from expectation in the well developed trellis pattern streams. The general conclusion is that the topologically random model is a very useful standard with which to compare real channel networks.
    Type of Medium: Series available for loan
    Pages: vi, 54 Seiten , Illustrationen
    Series Statement: CRREL Report 76-46
    Language: English
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  • 68
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/45
    In: CRREL Report, 76-45
    Description / Table of Contents: The maneuverability of air cushion vehicles can become a serious operational problem when the vehicle's travel route is restricted by obstacles, slopes or cross-wind conditions, or when close-quarter turns are required. While improvement and perfection of aerodynamic methods may be a more desirable approach, there is a practical limit to these methods, and the use of ground contact devices requires consideration for providing more positive directional control. Wheels deserve special attention, and therefore are analyzed in more detail because of their obvious application on a variety of land terrains. Brake rods and harrows are more suitable on water, ice and snow. The saucer-shaped ground contact device would cause the least ecological impact on fragile organic terrains such as tundra. Relative directional stability is evaluated in terms of the total yawing moments produced by wheel arrangements (single, dual, tandem), location on the vehicle, and operational modes (free-rolling, braked, or a combination of the two). The available moments are plotted against the yaw angle of the vehicle to determine the most effective operational mode with a particular wheel arrangement for any yaw condition. The analysis is limited to retractable devices which act as moment producing brakes or rollers and do not serve as either propulsion or load support aids. Controlled ground contract with skirt sections having special wearing surfaces may provide a suitable control method and would require the least significant change to the basic design of the vehicle or its components. The concept involves the use of an air flow control mechanism for deflating specific skirt sections.
    Type of Medium: Series available for loan
    Pages: vii, 15 Seiten , Illustrationen
    Series Statement: CRREL Report 76-45
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Conversion factors: U.S. customary to metric (SI) units of measurement Section I: Use of auxiliary devices for ACV control Introduction Discussion of wheels as a control device Dual wheels Single wheel Tandem wheels Application to existing ACV’s Other control devices Turning force Conclusions Section II: Use of flexible skirts for ACV control Introduction The flexible skirt as a control device Model tests Conclusions Literature cited
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  • 69
    Monograph available for loan
    Monograph available for loan
    Geneva : World Meteorological Organization
    Call number: MOP 44781/1 / Mitte ; MOP 44781/2 / Mitte
    Description / Table of Contents: Content: Provisional Programme Introduction: Climate and society: lessons from recent events / Robert R. Kates Overview Paper 1: Climatic change and human strategy / E. K. Fedorov Overview Paper 2: Global ecology and man / Bert Bolin Overview Paper 3: Climatic variation and variability: empirical evidence from meteorological and other sources / F. Kenneth Hare Overview Paper 4: Climates of past geological epochs / I. P. Gerasimov Overview Paper 5: The physical basis of climate / W. Lawrence Gates Overview Paper 6:Modelling of climatic changes and the problem of long-range weather forecasting / G. I. Marchuk Overview Paper 7: Climate monitoring and climatic data collection services for determining climatic changes and variations / Ju. A. Izrael Overview Paper 8: Human activities that affect climate / R. E. Munn and L. Machta Overview Paper 9: Some results of climate experiments with numerical models / B. J. Mason Overview Paper 10: A scenario of possible future climates - natural and man-made / H. Flohn Overview Paper 11: missing Overview Paper 12: Climate variability and the design and operation of water resource systems Overview Paper 13: Climate, health and disease / Wolf H. Weihe Overview Paper 14: Global aspects of food production / M. S. Swaminathan Overview Paper 15: Climatic variability and agriculture in the temperate regions / James D. McQuigg Overview Paper 16: Climatic variability and agriculture in tropical moist regions / Hayao Fukui Overview Paper 17: Climatic variability and agriculture in the semi-arid tropics / Francesco Mattei Overview Paper 18: Climatic change and the exploitation of climatic resources in china / Chang Chia-cheng, Wang Shao-wu, Cheng Szu-chung Overview Paper 19 (2x): Climatic variability and land use : an african perspective / Julius S. Oguntoyinbo and Richard S. Odingo Overview Paper 20: Renewable resources and agriculture in Latin America in relation to the stability of climate / Juan J. Burgos Overview Paper 21: Climatic variability and forestry / A. Baumgartner Overview Paper 22: Climatic variation and marine fisheries / D. H. Cushing Overview Paper 23: Climatic variability, marine resources and offshore development / T. F. Gaskell Overview Paper 24: Climate and economic activity / Ralph C. d'Arge
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    Pages: 2 Ordner
    Language: English
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  • 70
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/41
    In: CRREL Report, 76-41
    Description / Table of Contents: Eight Geoceiver stations were established and suitably marked along or near the crestiline of the Greenland ice sheet during GISP field operations from 1971 to 1975. At one of these stations, DYE-3, repeated Geoceiver positions indicate an ice velocity of 12.7 m.yr on an azimuth of approximately 60 degrees. Data from the International Greenland Glaciological Expedition (EGIG) surveys show that ice flow in the vicinity of Crete is radiating outward from a dome to the south. Two independent calculations of the state of equilibrium at Crete indicate ice sheet thinning rates of 0.25 to 0.37 m/yr, while direct measurement of elevation change by EGIG indicates an ice sheet thickening rate of difference of 0.06 m/yr. Resolution of these differences must await further geophysical work and deep drilling in the ice sheet.
    Type of Medium: Series available for loan
    Pages: iii, 13 Seiten , Illustrationen
    Series Statement: CRREL Report 76-41
    Language: English
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  • 71
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/44
    In: CRREL Report, 76-44
    Description / Table of Contents: The deformation of wet snow is explained in terms of the thermodynamics of the three phases of water. When deformation by particle rearrangement is fully developed, deformation can occur most rapidly by melting at the particle contacts. The rate of deformation is highly sensitive to the liquid water content, ionic impurity content, particle contact area, and stress level. A model of the hydrostatic deformation of wet snow is constructed, and examples of the deformation of wet snow are given for a variety of conditions. These results are in agreement with existing experimental evidence. The model accurately simulates the transient nature of the deformation and the effect of water content on the quasi-stable density of wet snow subjected to a constant stress.
    Type of Medium: Series available for loan
    Pages: iv, 9 Seiten , Illustrationen
    Series Statement: CRREL Report 76-44
    Language: English
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  • 72
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/42
    In: CRREL Report, 76-42
    Description / Table of Contents: A study of arching of mixed, square fragmented ice floes at an opening in an ice boom is documented, using results from a model study in which two sizes of plastic blocks represented real ice. A power function, relating the upstream ice concentration to the ratio of a characteristic block dimension to the gap opening, is found adequate to distinguish between arching and nonarching events for block mixtures of two component sizes. It is demonstrated that when the respective total areas of the two block components are nearly equal, a minimum ice concentration initiates an arch across the opening. As the mixture of two sizes of blocks approaches a uniform (one-sized) mixture, a higher concentration of ice is needed to initiate the arch. When the ratio of the block dimension to the gap opening is equal to or less than 0.10, arching of the fragmented ice is not possible, even when the upstream ice discharge exceeds the maximum discharge of ice through a gap opening. The distribution of fragmented ice areas is an important parameter in establishing the minimum size of opening at which an ice boom will retain its arching capability.
    Type of Medium: Series available for loan
    Pages: iv, 17 Seiten , Illustrationen
    Series Statement: CRREL Report 76-42
    Language: English
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  • 73
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-77/6
    In: CRREL Report, 77-6
    Description / Table of Contents: It has been reported that small arms projectiles are inherently unstable in snow and that snow has an unexpectedly high ability to stop them and other fast-moving projectiles. Field tests showed that the typical subarctic snow of interior Alaska can be used effectively to provide protection from both rifle and machine gun fire. The undisturbed snow had an average density of 0.18 g/cu. cm., but simple processing, such as shoveling, increased the density to around 0.34 g/cu. cm. Further processing increased the density to above o.40 g/cm3 but densities much above that value were difficult to obtain with simple hand equipment. Tests of the M16 rifle and M60 and M2HB machine guns showed that bullet penetration was inversely related to density - the higher the density the lower the bullet penetration. Design values for the three weapons were determined. A number of types of snow trenches and structures were designed and tested. They were found to provide good protection, in part since bullets showed a strong tendency to ricochet from the snow surface when striking it at a low angle. Burlap bags were filled with snow to revet structures and worked very well. Several types of Russian defensive works of snow were tested but proved unsuitable in the light, weak subarctic snow. The times required for troops to build several types of structures using only shovels and scoops were recorded.
    Type of Medium: Series available for loan
    Pages: vi, 23 Seiten , Illustrationen
    Series Statement: CRREL Report 77-6
    Language: English
    Note: CONTENTS Abstract Preface Summary Background Objectives Subarctic snow General Snow processing Construction productivity Shovel capacity Snow piles Bullet behavior and penetration in snow Test procedure M16 M60 ball M60 tracers .50 caliber Tumbling Bullet deformation and breakage Design penetration values Defensive works of snow Revetments Snow bags The snow trench The hardened snow trench Breastworks and bunkers Evaluation of foreign technology Russian expedient snow trenches Snow blocks and block structures The snow arch An expedient shelter Conclusions Recommendations Literature cited
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  • 74
    Monograph available for loan
    Monograph available for loan
    New York [u.a.] : McGraw-Hill Book Company
    Call number: MOP 44210 / Mitte
    Type of Medium: Monograph available for loan
    Pages: XV, 523 Seiten , graphische Darstellungen
    ISBN: 978-0-070-56042-0
    Language: English
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  • 75
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-77/4
    In: CRREL Report, 77-4
    Description / Table of Contents: The ice booms on the St. Marys River at Sault Ste.Marie, Michigan and Ontario, were operated a second winter, 1976-77, under colder conditions, with less water flow, lower water levels, and 25% fewer ships in the river than during the previous year. The ice cover behind the booms remained frozen to shore for longer periods, and the loads registered in the booms were relatively unaffected by ship passages compared with the previous year's activity. As in the previous year, most structural load changes took place in the west ice boom and were due to movements of the ice cover immediately upstream of the boom. The cover broke free from shore on three occasions: the first and third occasions were minor events, but on the second occasion the cover cracked free, the timbers remained frozen to it, and the boom structure became damaged by the subsequent ice activity. Three anchor line assemblies broke over a period of about 4 hours; the two latter breaks occurred while a ship was operating in the ice. The first break was in an instrumented line and the measured load was unexpectedly low. The most important break was in the main shore anchor and this opened the boom. The maximum force at this anchor was estimated as less than 115 tons (1,023 kN). Some ice moved downstream without serious consequence and the boom was reconnected in two days. These events point out several factors to be considered in ice booms, such as designing the booms to withstand the action of the solid ice cover as well as the fragmented ice cover, keeping the structures and their assembly simple, and inspecting components and assemblies carefully.
    Type of Medium: Series available for loan
    Pages: vi, 26 Seiten , Illustrationen
    Series Statement: CRREL Report 77-4
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Ice boom basic principles General loading considerations Design ice areas Prediction of ice boom loads Summary Ice cover forces Ice barrier reaction force Ice forces in the structure Analytical relationships Design force summary Special features Extension of west ice boom Pipe restraint structure Diagonal anchor cables Measurement systems Measured anchor cable forces Data records Average and peak loads Ice activity on or about 1 February 1976 C3W cable forces Ship-induced leads Ice cover load check Conclusions Recommendations Literature cited Appendix A. St. Marys River ice booms test data
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  • 76
    Call number: MOP 44439 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 68 Seiten
    Language: English
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  • 77
    Call number: MOP 46990 / Mitte
    In: World weather program : plan for fiscal year, 1979
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  • 78
    Call number: MOP 44818 / Mitte
    Type of Medium: Monograph available for loan
    Pages: vii, 50 Seiten , 28 cm
    Language: English
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  • 79
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/11
    In: CRREL Report, 79-11
    Description / Table of Contents: A theory of the optical properties of snow in the 2-20 region of the infrared has been developed. Using this theory it is possible to predict the absorption and scattering coefficients and the emissivity of snow, as a function of the snow parameters of grain size and density, for densities between 0.17 and 0.4 g/cm3. The absorption and scattering coefficients are linearly related to the density and inversely related to the average grain size. The emissivity is independent of grain size and exhibits only a weak dependence upon density.
    Type of Medium: Series available for loan
    Pages: iii, 9 Seiten , Illustrationen
    Series Statement: CRREL Report 79-11
    Language: English
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  • 80
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/12
    In: CRREL Report, 79-12
    Description / Table of Contents: An analysis of a point source bubbler system used to induce local melting of an ice cover is presented. The analysis leads to a numerical simulation programmed in FORTRAN which may be used to predict the effectiveness of such systems. An example application is presented using a typical record of average daily air temperatures. The FORTRAN program for the point source simulation as well as a FORTRAN program for line source systems are included in the Appendix.
    Type of Medium: Series available for loan
    Pages: iii, 12 Seiten , Illustrationen
    Series Statement: CRREL Report 79-12
    Language: English
    Note: CONTENTS Abstract Preface Introduction Outline of analysis Plume analysis Heat transfer analysis Temperature of impinging plume Heat transfer coefficient Melting of the ice cover Simulation example Thermal reserve analysis Literature cited Appendix
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  • 81
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/10
    In: CRREL Report, 79-10
    Description / Table of Contents: Ice cores from Byrd Station and Little America V have been used to test an ultrasonic technique for evaluating crystal anisotropy in the Antarctic Ice Sheet. P-wave velocities measured parallel and perpendicular to the vertical axes of cores from the 2164-m-thick ice sheet at Byrd Station have yielded results in excellent agreement with the observed c-axis fabric profile and with the in-situ P-wave velocity profile measured parallel to the bore hole axis. Velocity differences in excess of 140 m/s for core samples from deeper than 1300 m attest to the strong single pole clustering of crystallographic c-axes about the vertical, especially in the zone from 1300-1800 m. Such oriented structure is compatible only with strong horizontal shearing in this zone. The existence in an ice sheet of widespread shearing several hundred meters above its bed raises serious questions as to the validity of current concepts of the flow of large ice masses that tend to gloss over or ignore crystal alignments of this magnitude.
    Type of Medium: Series available for loan
    Pages: IV, 16 Seiten , Illustrationen
    Series Statement: CRREL Report 79-10
    Language: English
    Note: CONTENTS Abstract Preface Introduction Laboratory measurements Sample sources Ultrasonic velocity measurements Effects of inclined drilling at Byrd Station Results Byrd Station Little America V Summary and conclusions Literature cited
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  • 82
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/13
    In: CRREL Report, 79-13
    Description / Table of Contents: Heat transfer in turbulent flow was measured in a rectangular channel with a width of 0.254 m and a flow depth of 0.0254 m. Correlations between the Nusselt and Reynolds numbers are given for a range of 3020 Re 22360. A Prandtl number range of 9.90 or = Pr or = 12.28 for water was used in the tests. The results are compared with those of other investigations and show that some well-known correlations underpredict the heat transfer by about 35%.
    Type of Medium: Series available for loan
    Pages: ii, 5 Seiten , Illustrationen
    Series Statement: CRREL Report 79-13
    Language: English
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  • 83
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/14
    In: CRREL Report, 79-14
    Description / Table of Contents: Solid ice growth rates due to the presence of frazil slush beneath the ice cover have been shown to be greater than the so-called static growth. The frazil slush reduces the effective heat of ice solidification and the frazil particles freeze into the interstitial water. Numerical schemes are presented which clearly show the effect of frazil ice porosity on ice cover growth rates and the numerical model using air temperature as the major input is compared with field data on ice thickness in a small river laden with frazil ice beneath its cover.
    Type of Medium: Series available for loan
    Pages: ii, 4 Seiten , Illustrationen
    Series Statement: CRREL Report 79-14
    Language: English
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  • 84
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/22
    In: CRREL Report, 79-22
    Description / Table of Contents: Field observations at 60 Sites located in the fast or near-fast ice along a 1200-km stretch of the north coast of Alaska between Bering Strait and Barter Island have shown that the great majority of the ice samples (95%) exhibit striking c-axis alignments within the horizontal plane. Such alignments were usually well developed by the time the ice was 50 cm thick and in some cases when the ice was 20 cm thick. In all cases the degree of preferred orientation increased with depth in the ice. Representative standard deviations around a mean direction in the horizontal plane are commonly less than ± 10° for samples collected near the bottom of the ice. The general patterns of the alignments support a correlation between the preferred c-axis direction and the current direction at the ice/water interface. A comparison between c-axis alignments and spot current measurements made at 42 locations shows that the most frequent current direction coincides with the mean c-axis direction. Such alignments are believed to be the result of geometric selection with the most favored orientation being that in which the current flows normal to the (0001) plates of ice that compose the dendritic sea ice/sea water interface.
    Type of Medium: Series available for loan
    Pages: v, 21 Seiten , Illustrationen
    Series Statement: CRREL Report 79-22
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Techniques and sampling Observations Crystal alignments “Odd” sites Causes Conclusions Literature cited Appendix A: Current observations
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  • 85
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/9
    In: CRREL Report, 79-9
    Description / Table of Contents: Sedimentation at the terminus of the Matanuska Glacier has been found to be primarily subaerial in a 100- to 300-m wide, ice-cored zone paralleling the edge of the active ice. Certain physical and chemical characteristics of the ice and debris of the superglacial, englacial and basal zones of the glacier indicate the debris of the basal zone, the primary source of sediment, is entrained during freeze-on of meltwater, probably surficially derived, to the glacier sole. Till formation results from the melting of buried ice of the basal zone. Melt-out till inherits the texture and particle orientations of basal ice debris; other properties are not as well preserved. Most deposits result from resedimentation of till and debris by sediment gravity flows, meltwater sheet and rill flow, slump, spall, and ice ablation. Depositional processes are interrelated in the process of backwasting of ice-cored slopes. Sediment flows are the primary process of resedimentation. Their physical characteristics, multiple mechanisms of flow and deposition, and characteristics of their deposits vary with the water content of the flow mass. Deposits of each process are distinguished from one another by detailed analysis of their internal organization, geometry and dimensions, and the presence of other internal and related external features. Genetic facies are defined by these characteristics. The interrelationship of processes develops a composite depositional sequence defined in terms of genetic facies associations; an upper, resedimented facies association, a middile, till facies association, and a lower, subglacial-resedimental facies association. The lateral and vertical distribution of genetic facies within the associations is mainly nonrepetitive.
    Type of Medium: Series available for loan
    Pages: X, 112 Seiten , Illustrationen , 1 Beilage
    Series Statement: CRREL Report 79-9
    Language: English
    Note: CONTENTS Abstract Preface Summary Chapter 1. Introduction Field site Historical background Chapter 2. Characteristics of the debris and ice Characteristics of the facies and subfacies Basal zone Characteristics of the debris Discussion Chapter 3. Oxygen isotope analysis Sampling and analysis Results Discussion Chapter 4. Depositional processes—till formation Methods of analysis Environmental setting Till formation Chapter 5. Depositional processes—resedimentation Sediment flows Other resedimentation processes Resedimentation process relationships Chapter 6. Process distribution, sediment dispersal and depositional patterns Physical characteristics Sediment dispersal Sedimentary facies Patterns of terminus sedimentation Chapter 7. Conclusions Literature cited
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  • 86
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/20
    In: CRREL Report, 79-20
    Description / Table of Contents: A volumetric constitutive equation was developed to characterize the behavior of snow subjected to large compressive volumetric deformations. By treating the material as a suspension of air voids in a matrix material of polycrystalline ice, a rate-dependent volumetric constitutive law was formulated and found to accurately predict material response to pressure loads for a wide range of load rates. Comparison of the theory with shock wave data was not considered in this paper, although the constitutive law appears to be valid for such load situations. One application to oversnow mobility of tracked vehicles was made. In this case, power requirements due to snow compaction were calculated parametrically in terms of vehicle speed, track loading, and snow density.
    Type of Medium: Series available for loan
    Pages: v, 13 Seiten , Illustrationen
    Series Statement: CRREL Report 79-20
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Material representation of ice Development of the volumetric constitutive law for snow Fully elastic phase Elastic-plastic phase Fully plastic phase Simplified equation Comparison with experimental data Application to vehicle mobility problems Conclusions Literature cited
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  • 87
    Call number: MOP 45476 / Mitte
    Type of Medium: Monograph available for loan
    Pages: [400] Seiten , Illustrationen , 28 cm
    Language: English
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  • 88
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/21
    In: CRREL Report, 79-21
    Description / Table of Contents: The report studies the question of whether Great Lakes freighters could move effectively through ice-clogged channels with the aid of tows provided by warping or kedging systems. Ten operational concepts are outlined, and their advantages and disadvantages are noted. The crushing resistance of floating brash ice is then analyzed. The neutral, active and passive states of stress for laterally confined brash ice are considered, and the resistance to horizontal thrusting by a smooth vertical wall is calculated for cohesionless brash ice, and for ice in which there is finite cohesion between the ice fragments. The thickening of the ice cover in the vicinity of a "pusher", and the formation of pressure ridges, are analyzed in order to estimate the amount of pile-up that can occur against a ship hull. The analysis then moves on to consideration of ship resistance by brash ice, taking into account crushing resistance at the bow, tangential friction at the bow, and hull friction aft of the bow section. Comparisons are made between thrust from the ship’s screws and the calculated ice resistance. The next section of the report estimates the force requirements for a warping or kedging system in terms of thrust augmentation for existing vessels. Tow cable requirements are given, and estimates are made for cable anchors and for anchorage of underwater structures. The force and power requirements for winches and windlasses are given, the practical problems involved in the pickup or transfer of cables are mentioned, and the report concludes with a brief appraisal. The conclusion is that a simple warping tug system is appropriate for a full scale experiment, a chain ferry with auxiliary barge seems attractive for an operational system, and a chain ferry plow may be an efficient way to clear ice from channels.
    Type of Medium: Series available for loan
    Pages: iv, 21 Seiten , Illustrationen
    Series Statement: CRREL Report 79-21
    Language: English
    Note: CONTENTS Abstract Preface Introduction Operational concepts A. Warping tug system B. Chain ferry system C. Chain ferry with auxiliary barge D. Ski tow system E. Dual winch warping system F. Simple kedging G. Trailing-line system H. Above-surface dual winch system I. Pulley systems J. Chain ferry plow Crushing resistance of fragmented ice covers Resistance to ship passage by broken ice Crushing resistance at the bow Tangential friction at the bow Hull friction aft of the bow section Total ship resistance from brash ice Comparison of ship thrust and ice resistance Force requirements for a warping or kedging system Tow cable requirements Anchors and anchorages Force and power requirements for winches and windlasses Pickup or transfer of cable General appraisal Literature cited
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  • 89
    Monograph available for loan
    Monograph available for loan
    Garmisch-Partenkirchen : Physikalisch-Bioklimatische Forschungsstelle der Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung
    Call number: MOP 40082 / Mitte
    Type of Medium: Monograph available for loan
    Pages: ca. 100 Seiten
    Series Statement: AEC Document Number NYO - 3425 - 10
    Language: English
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  • 90
    Monograph available for loan
    Monograph available for loan
    Garmisch-Partenkirchen : Physikalisch-Bioklimatische Forschungsstelle der Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung
    Call number: MOP 40082 / Mitte
    Type of Medium: Monograph available for loan
    Pages: ca. 100 Seiten
    Series Statement: AEC Document Number NYO - 3425 - 12
    Language: English
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  • 91
    Monograph available for loan
    Monograph available for loan
    Garmisch-Partenkirchen : Physikalisch-Bioklimatische Forschungsstelle der Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung
    Call number: MOP 40082 / Mitte
    Type of Medium: Monograph available for loan
    Pages: ca. 100 Seiten
    Series Statement: AEC Document Number NYO - 3425 - 16
    Language: English
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  • 92
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/18
    In: CRREL Report, 79-18
    Description / Table of Contents: Temperatures of the subgrade and of sulfur foam insulation test sections in an expedient road were monitored with thermocouples to document freezing and thawing conditions. Vehicular trafficking was conducted on a limited basis to determine the load supporting capabilities of the foam. The sulfur foam, placed directly under a prefabri­cated surface mat, was found to be unsuitable for use as an expedient thermal insulation and traffic load supporting material primarily because of its low tensile strength and high brittleness. The insulating value of sulfur foam pro­duced by the batch process in the field was about one-half that of extruded polystyrene, meaning double the thick­ness for equal protection against thaw.
    Type of Medium: Series available for loan
    Pages: v, 21 Seiten
    Series Statement: CRREL Report 79-18
    Language: English
    Note: CONTENTS Preface Conversion factors: U.S. customary to metric units of measurement Introduction Site preparation Sulfur foam application Sulfur foaming equipment Environmental aspects Traffic testing and test pad observations Field sampling and temperature readings during pouring Lab tests for physical properties Sulfur foam odor analysis Insulation costs Lab experiments with sulfur foam Conclusions Literature cited
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  • 93
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/30
    In: CRREL Report, 79-30
    Description / Table of Contents: The ice suppression resulting from discharge of warm water into rivers during winter is analyzed with emphasis on two different cases. In Part 1 the case of a thermal effluent fully mixed across the flow section is analyzed to include the effects of unsteadiness in the effluent temperature and the meteorological variations. The location of the ice edge is determined either by a 0 C water temperature criterion or an equilibrium ice melting analysis. The choice of the applicable criterion emerges naturally from the analysis even though the location of the ice edge may be considerably different when a steady-state analysis is done. In Part 2 the case of a side discharge of heated effluent is analyzed, also in an unsteady manner, and the effects of transverse dispersion are included in the analysis. Comparisons are made in both Parts 1 and 2 to limited field data that are available.
    Type of Medium: Series available for loan
    Pages: iv, 23 Seiten , Illustrationen
    Series Statement: CRREL Report 79-30
    Language: English
    Note: CONTENTS Abstract Preface Part I. Unsteady suppression of river ice by fully mixed thermal effluents Introduction Governing equations Outline of analysis Location of ice edge Numerical simulation Uncertainties and Imitations Literature cited Part II. Effect of transverse mixing on ice suppression Introduction Analysis of dispersion and heat loss Analysis of ice thickening and melting Numerical simulation Example simulations Field comparison Uncertainties and limitations Literature Cited Appendix A: Computer program for unsteady fully mixed ice suppression Appendix B: Computer program for unsteady lateral mixing ice suppression
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  • 94
    Call number: MOP 45095 / Mitte
    Description / Table of Contents: 13 papers on the use of meteorology in planning for agriculture, housing, public works, skifields and industry.
    Type of Medium: Monograph available for loan
    Pages: 245 Seiten , Illustrationen , 30 cm
    Language: English
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  • 95
    Monograph available for loan
    Monograph available for loan
    Wellington : New Zealand Meteorological Service
    Call number: MOP 44877 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 127 Seiten
    Language: English
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  • 96
    Call number: MOP 43942 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 117 Seiten , Illustrationen, Karten , 30 cm
    Language: English
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  • 97
    Call number: MOP 40582 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 237 Seiten
    Language: English
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  • 98
    Call number: MOP 44718 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 364 Seiten
    Language: English
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  • 99
    Call number: MOP 40801 / Mitte
    Type of Medium: Monograph available for loan
    Pages: II, 170 Seiten , Illustrationen
    Language: English
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  • 100
    Series available for loan
    Series available for loan
    Wilmette, Ill. : Snow Ice and Permafrost Research Establishment, Corps of Engineers, U.S. Army
    Associated volumes
    Call number: ZSP-202-32
    In: Research report / Cold Regions Research and Engineering Laboratory, 32
    Description / Table of Contents: Summary: Apparatus was built for deforming ice crystals under hydrostatic pressures up to 350 atmospheres. Single crystals were placed in the mounts in such a way that the deformation occurred by gliding on the basal glide plane. It was found that the shear strain rate increased as the pressure was increased at constant temperature, but that the rate is practically independent of hydrostatic pressure when the difference between the ice temperature and the melting point is kept constant.
    Type of Medium: Series available for loan
    Pages: iv, 7 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory 32
    Language: English
    Note: CONTENTS Preface Summary Introduction Test apparatus and experimental procedures Experimental results Conclusions References
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