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  • 101
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-77/23
    In: CRREL Report, 77-23
    Description / Table of Contents: This report discusses the relationship between an architect and a behavioral scientist. Some of the discussion applies to this cooperative work for design of buildings. The bulk, however, relates to the cooperation of architect and behavioral scientist while conducting research. Examples from collaborative research at Alaskan military installations are cited which demonstrate the roles and contributions of the two disciplines.
    Type of Medium: Series available for loan
    Pages: 8 Seiten , Illustrationen
    Series Statement: CRREL Report 77-23
    Language: English
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  • 102
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-77/21
    In: CRREL Report, 77-21
    Description / Table of Contents: Cold weather limits the successful application of built-up roofing, but often a roof installation must be completed late in the fall or in the winter. The loose-laid protected membrane roof with a synthetic sheet membrane can be installed in the middle of the winter with complete reliability. A synthetic membrane is traditionally more expensive than built-up roofing (rising crude oil prices, however, have reversed this condition), but it has two special features besides its suitability for winter installation: it can be placed on a damp deck, if necessary, and, being losse-laid, it does not split because of deck movement. This report documents information on the installation of two roofs in Anchorage, Alaska, during January and February 1972, including a discussion of the necessary snow removal from the bare deck and the use of portable shelters for preparing the lap joints between sheets during very cold weather. The winter installation caused no special construction problems and the advantages of the synthetic membrane make it an attractive alternative to built-up roofing. The cost of loose-laid protected membrane roofs in Alaska was, in 1972, nearly $300 per square ($28/sq.m), including insulation. Prices are rising as labor costs rise and as more insulation is specified.
    Type of Medium: Series available for loan
    Pages: 5 Seiten , Illustrationen
    Series Statement: CRREL Report 77-21
    Language: English
    Note: CONTENTS Abstract Preface Introduction The protected membrane roof Winter construction considerations Construction costs Conclusion
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  • 103
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-77/19
    In: CRREL Report, 77-19
    In: Mechanics of cutting and boring, Part VI
    Description / Table of Contents: Abstract: The report deals with forces and power levels in cutting machines having adisc or drum that rotates about an axis perpendicular to the direction of advance. The forces on individual cutting tools are related to position on the rotor and to characteristics such as tool layout, rotor speed, rotor size, machine advance speed, and rotor torque. Integration leads to expressions for force components acting on the rotor axis, taking into account tool characteristics, cutting depth of the rotor, and rotor torque. These provide estimates of tractive thrust and thrust normal to the primary free surface. For self-propelled machines, this leads to considerations of traction, normal reaction, weight and balance, and power/weight ratios. Specific energy consumption is analyzed and related to machine characteristics and strength ofthe material being cut. Power per unit working area is discussed, and data for existing machines are summarized. Power requirements for ejection ofcuttings are analyzed, and the hydrodynamic resistance on underwater cuttings is treated. A number of worked examples are given to illustrate the principles discussed in the report.
    Type of Medium: Series available for loan
    Pages: vii, 36 Seiten , Illustrationen
    Series Statement: CRREL Report 77-19
    Language: English
    Note: CONTENTS Abstract Preface Foreword Introduction Terminology Forces on individual cutters Torque force and tool force Forces on the rotor axis Tractive thrust and down thrust Alternative tool force formulations Vehicle traction Power/weight ratio Weight and balance Force, torque, speed and power Specific energy Efficiency and performance index Power density Power requirements for ejection of cuttings Hydrodynamic resistance in underwater cutting
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  • 104
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/1
    In: CRREL Report, 76-1
    Description / Table of Contents: This report summarizes the advances in understanding of the Arctic which have come about since the inception of the ARPA Arctic Surface Effect Vehicle Program in 1970, primarily as the result of CRREL’s participation. Major efforts to increase knowledge of sea ice, terrestrial, and coastal topographic features are described. Special empha­sis is placed upon the quantitative understanding of pressure ridging. Other areas of major interest are atmospheric characteristics and ecological effects. A list of publications generated is included.
    Type of Medium: Series available for loan
    Pages: iv, 28 Seiten , Illustrationen
    Series Statement: CRREL Report 76-1
    Language: English
    Note: CONTENTS Abstract Preface Introduction Sea ice characteristics Ridging intensity Arctic terrain characteristics databank Digital terrain maps Digital laser profiles Standard terrain tapes Mobility analysis Terrestrial and coastal characteristics Northern Alaska Interior Alaska Arctic USSR Northern Canada and Greenland Climatological characteristics General features Surface winds Temperatures Precipitation and visibility Electromagnetic/optical propagation Ecological effects of SEV operations SK-5 tests Simulated SEV tests Conclusions Literature cited Additional CRREL SEV Bibliography
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  • 105
    Series available for loan
    Series available for loan
    [Tokyo] : Japan Aerospace Exploration Agency
    Associated volumes
    Call number: ZSP-405a-08-0030
    In: JAXA Research and Development Report
    Type of Medium: Series available for loan
    Pages: 52 S. : graph. Darst.
    Series Statement: JAXA Research and development report RR-05-007E
    Language: English
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  • 106
    Call number: ZSP-405a-08-0048
    In: JAXA Research and Development Report
    Type of Medium: Series available for loan
    Pages: 13 S. : graph. Darst.
    Series Statement: JAXA Research and development report RR-07-014E
    Language: English
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  • 107
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/2
    In: CRREL Report, 76-2
    Description / Table of Contents: The repair and maintenance costs of low slope roofs are high and their life expectancy is less than desired. The increasing use of insulation is accompanied by a greater incidence of problems. The experience in cold regions amplifies these experiences. Protected membrane roofs have the prerequisites for better performance and the experience to date is encouraging. The results of performance measurements of three roofs built by the Corps of Engineers verify that the membrane remains at nearly constant temperature, independent of the weather, and that the insulation retains its integrity despite periodic wetting. Moisture absorption is slow and appears to stabilize in time due to the self-drying nature of the roof. Heat losses are increased due to rain, and extra insulation should be added to compensate for these losses. The resistance of protected membrane roofs to fire, traffic, impact, and other adverse forces is superior. So far, the initial cost of protected membrane roofs is at a premium, primarily due to the cost of concrete pavers. The initial cost premium can be justified, however, by the reduced repair and maintenance costs as indicated to date, and by the longer life expectancy of the protected membrane. The high probability of superior performance and cost effectiveness is a compelling reason to incorporate protected membrane roofs increasingly in Government construction.
    Type of Medium: Series available for loan
    Pages: v, 27 Seiten , Illustrationen
    Series Statement: CRREL Report 76-2
    Language: English
    Note: CONTENTS Page Abstract Preface Introduction Low slope roof problems and repair costs Protected membrane roofs and materials Installations of protected membrane roofs Performance evaluation Test program Effectiveness Thermal efficiency Heat balance Internal cooling due to rain Moisture absorption and thermal conductivity of insulations Durability and life expectancy Fire resistance Patent considerations Costs of roofs Design considerations Proposed specifications Conclusions and recommendations Literature cited
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  • 108
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/4
    In: CRREL Report, 76-4
    Description / Table of Contents: Large areas of grounded sea ice have been reported by early arctic explorers and more recently by the U.S. Coast Guard. The ESSA, ERTS, NOAA and DMSP satellites now provide multispectral imagery with sufficiently high resolution to allow detailed sequential observations to be made of the movement and spatial extent of arctic sea ice. This report discusses the location, formation and decay of five large (greater than 30 sq km) islands of grounded sea ice in the southern Chukchi Sea as observed for an extended period of time using satellite imagery. Measurements of the bathymetry around one grounded sea ice feature are presented along with observations made and photos taken from the ice surface. The potential use of these sea ice islands as research stations is also discussed.
    Type of Medium: Series available for loan
    Pages: v, 24 Seiten , Illustrationen
    Series Statement: CRREL Report 76-4
    Language: English
    Note: Contents Introduction The discovery Age of the island Island visit Other islands of grounded ice Discussion Literature cited
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  • 109
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/7
    In: CRREL Report, 76-7
    Description / Table of Contents: This report covers a series of cantilever beam tests designed to determined the efficacy of adding reinforcement to an ice cover. Tests were run using 1-in.-diam tree branches, 3/16-in.-diam wire rope and 9/16-in. half-round wood dowels as reinforcement for both seawater and freshwater ice. The results show a definite advantage derived from using reinforcement, even when poorly placed. The results also show that reinforced ice carries a load even after it cracks. Thus, after the initial cracks there is time to remove people and equipment before final breakthrough. One must bear in mind, however, that reinforcement has disadvantages. The darker reinforcement absorbs solar radiation and thereby causes earlier weakening of the ice cover. Also, in many cases the time and effort required to place reinforcement may exceed those required to achieve equal strength by additional thickening of the ice sheet. This study has shown that understanding of the failure mechanism of ice under repetitive loading is poor and that future studies should be performed on this problem. Also, this study covered only cantilever beams. The actual field problem is strengthening a three-dimensional sheet. Hence, distribution and orientation of the reinforcement should be addressed in future studies.
    Type of Medium: Series available for loan
    Pages: v, 12 Seiten , Illustrationen
    Series Statement: CRREL Report 76-7
    Language: English
    Note: Contents Abstract Preface Summary Conversion factors: U.S. customary to SI metric units Introduction Typical methods of constructing ice bridges Current knowledge Test program Objectives Equipment Procedure Data General Specific ice sheets Test results Conclusions Recommendations Literature cited
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  • 110
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/10
    In: CRREL Report, 76-10
    Type of Medium: Series available for loan
    Pages: vi, 25 Seiten , Illustrationen
    Series Statement: CRREL Report 76-10
    Language: English
    Note: CONTENTS Introduction Experimental work SCR samples CAG samples CMS samples UAG samples SI samples Optical system Equipment Procedure Photographic work Large cracks and fissures Small damage to the surface Small damage to the buIk Results Damage as a function of the position x of the focal point; n(x) Damage as a function of the number of irradiations #; n(#) Damage as a function of crystallographic orientation ĉ; n (ĉ); p (ĉ) Damage as a function of surface structure Damage as a function of age A; n (A) Damage as a function of wavelength λ; p(λ) Systematic study of damage as a function of W, t, m and s; n(W, t, m, s) Analysis Fracture in ice Mechanisms for optically generated damage in transparent dielectrics Discussion of the results Summary and conclusions Literature cited
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  • 111
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/13
    In: CRREL Report, 76-13
    Description / Table of Contents: The thermal structure and ice conditions of Lake Champlain, a mid-latitude large lake, near Shelburne Point, Vermont, were studied during the winter of 1974-75. The lake was instrumented to a depth of 8.5 m with a string of highly calibrated thermistors, connected to a data logger on shore which recorded water temperatures every four hours. An ice mooring system was developed to anchor the thermistor string so that ice and water temperatures could be obtained at known levels. This temperature recording system measured vertical and horizontal variations in ice and water temperature regimes during ice formation, growth and decay. Meteorological data were measured during the winter period November 1974 through March 1975 at the site. Ice stratigraphy was determined for the ice at the site at its maximum seasonal growth for comparison with ice from St. Albans Bay (at the northern end of Lake Champlain) which had formed earlier. Correlations were determined between ice growth and accumulated degree days of freezing. The operation of a bubbler system installed near the measurement site around a service dock was observed.
    Type of Medium: Series available for loan
    Pages: vii, 22 Seiten , Illustrationen
    Series Statement: CRREL Report 76-13
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Climate Site selection Instrumentation, measurements and calibration Installation of automatic water temperature recording system Visual observations and ice structure St. Albans Shelburne Analysis Temperature comparison Water temperature measuring system Changes in water temperature Wind Degree-days of freezing Prediction of ice formation Bubbler system Conclusions Recommendations Literature cited
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  • 112
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-76/14
    In: CRREL Report, 76-14
    Description / Table of Contents: At the height of warm weather in Alaska in 1975, temperature measurements were made to determine the extent of the thermal impact on French Creek due to a condenser cooling water impact from the Eielson AFB Power plant. Water temperature measurements during a two-day period failed to show any significant thermal impact on the water in French Creek. It was concluded that no thermal pollution exists due to this warm water input at the volumes and conditions that presently exist.
    Type of Medium: Series available for loan
    Pages: ii, 5 Seiten , Illustrationen
    Series Statement: CRREL Report 76-14
    Language: English
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  • 113
    facet.materialart.12
    facet.materialart.12
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-590
    In: Berichte zur Polar- und Meeresforschung
    Type of Medium: 12
    Pages: Online-Ressource (88 S.).
    Series Statement: Berichte zur Polar- und Meeresforschung 590
    Language: English
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  • 114
    facet.materialart.12
    facet.materialart.12
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-592
    In: Berichte zur Polar- und Meeresforschung
    Type of Medium: 12
    Pages: Online-Ressource.
    Series Statement: Berichte zur Polar- und Meeresforschung 592
    Language: English
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  • 115
    Call number: ZSP-405a-09-0019
    In: JAXA Research and Development Report
    Type of Medium: Monograph available for loan
    Pages: 14 S. : graph. Darst.
    Series Statement: JAXA Research and Development Report RR-08-003E
    Language: English
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  • 116
    Call number: ZSP-589-7
    In: NIPR Arctic Data Reports
    Type of Medium: Monograph available for loan
    Pages: 79 S. : überw. graph. Darst.
    ISSN: 1342-4033
    Series Statement: NIPR Arctic Data Reports 7
    Language: English
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  • 117
    Monograph available for loan
    Monograph available for loan
    Pretoria
    Call number: AWI Bio-85-0998
    Type of Medium: Monograph available for loan
    ISSN: 0036-8717
    Language: English
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  • 118
    Call number: ZSP-403-309
    In: Jare Data Reports
    Type of Medium: Series available for loan
    Pages: 47 S. : überw. graph. Darst.
    Series Statement: Jare Data Reports 309 : Terrestrial Biology 4
    Language: English
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  • 119
    Series available for loan
    Series available for loan
    Associated volumes
    Call number: AWI P5-09-0013
    In: IASC ... bulletin
    Type of Medium: Series available for loan
    Pages: 78 S. : Ill., graph. Darst.
    ISBN: 9789163343056
    Language: English
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  • 120
    Call number: AWI G5-09-0014
    Type of Medium: Dissertations
    Pages: ix, 120 S. : graph. Darst.
    Language: English
    Note: Potsdam, Univ., Diss., 2008
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  • 121
    Series available for loan
    Series available for loan
    Associated volumes
    Call number: ZSP-691-1984
    In: Research in Svalbard
    Type of Medium: Series available for loan
    Pages: 180 S.
    Language: English
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  • 122
    Monograph available for loan
    Monograph available for loan
    Copenhagen : Kommissionen for Videnskabelige Undersøgelser i Grønland
    Associated volumes
    Call number: ZSP-553-15
    In: Meddelelser om Grønland
    Type of Medium: Monograph available for loan
    Pages: 72 S. : Ill., zahlr. graph. Darst.
    ISBN: 8717052297
    Series Statement: Meddelelser om Grønland : Bioscience 15
    Language: English
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  • 123
    Call number: AWI P6-09-0022 ; ZSP-597-175 ; ZSP-597-175(2. Ex.) ; ZSP-597-175(3. Ex.)
    In: Skrifter
    Type of Medium: Monograph available for loan
    Pages: 130 S. : Ill., graph. Darst., Kt. + 2 Kt.-Beil.
    ISBN: 8290307160
    Series Statement: Skrifter / Norsk Polarinstitutt 175
    Language: English
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  • 124
    Monograph available for loan
    Monograph available for loan
    Associated volumes
    Call number: ZSP-558-8
    In: Middle atmosphere program
    Type of Medium: Monograph available for loan
    Pages: 76 S.
    Language: English
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  • 125
    Call number: ZSP-558-9 ; MOP 46209 / Mitte
    In: Middle atmosphere program
    Type of Medium: Series available for loan
    Pages: 579 S. : Ill., graph. Darst.
    Language: English
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  • 126
    Call number: ZSP-558-13 ; MOP 46209 / Mitte
    In: Middle atmosphere program
    Type of Medium: Series available for loan
    Pages: 261 S. : Ill., graph. Darst.
    Language: English
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  • 127
    Call number: AWI G2-09-0036
    In: Manuals and guides
    Type of Medium: Monograph available for loan
    Pages: 99 S. : Ill., graph. Darst.
    Series Statement: Manuals and guides / Unesco, Intergovernmental Oceanographic Commission 53
    Language: English
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  • 128
    Monograph available for loan
    Monograph available for loan
    Berlin [u.a.] : Cramer in der Gebrüder Borntraeger Verl.-Buchhandlung
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    Call number: M 98.0060
    In: Dissertationes botanicae
    Type of Medium: Monograph available for loan
    Pages: 157 S. + 34 Beil.
    ISBN: 3443640494
    Series Statement: DISSERTATIONES BOTANICÆ 137
    Classification:
    Paleontology
    Language: English
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  • 129
    Call number: AWI G8-09-0017 ; AWI G8-09-0017(2. Ex.)
    Type of Medium: Monograph available for loan
    Pages: XII, [36], 756 Seiten , Illustrationen
    Edition: Sixth edition
    ISBN: 9780470052457
    Language: English
    Note: Contents: 1 Concepts and Foundations of Remote Sensing. - 1.1 Introduction. - 1.2 Energy Sources and Radiation Principles. - 1.3 Energy Interactions in the Atmosphere. - 1.4 Energy Interactions with Earth Surface Features. - 1.5 Data Acquisition and Interpretation. - 1.6 Reference Data. - 1.7 The Global Positioning System. - 1.8 Characteristics of Remote Sensing System. - 1.9 Successful Application of Remote Sensing. - 1.10 Geographic Information Systems. - 1.11 Organization of the Book. - Works Cited. - 2 Elements of Photographic Systems. - 2.1 Introduction. - 2.2 Early History of Aerial Photography. - 2.3 Photographic Basics. - 2.4 Film Photography. - 2.5 Digital Photography. - 2.6 Aerial Cameras. - 2.7 Spatial Resolution of Camera Systems. - 2.8 Aerial Videography. - 2.9 Multiband Imaging. - 2.10 Conclusion. - Works Cited. - 3 Basic Principles of Photogrammetry. - 3.1 Introduction. - 3.2 Basic Geometric Characteristics of Aerial Photographs. - 3.3 Photographic Scale. - 3.4 Ground Coverage of Aerial Photographs. - 3.5 Area Measurement. - 3.6 Relief Displacement of Vertical Features. - 3.7 Image Parallax. - 3.8 Ground Control for Aerial Photography. - 3.9 Production of Maps and Orthophotos. - 3.10 Flight Planning. - 3.11 Conclusion. - Works Cited. - 4 Introduction to Visual Image Interpretation. - 4.1 Introduction. - 4.2 Fundamentals of Visual Image Interpretation. - 4.3 Basic Visual Image Interpretation Equipment. - 4.4 Land Use/Land Cover Mapping. - 4.5 Geologic and Soil Mapping. - 4.6 Agricultural Applications. - 4.7 Forestry Applications. - 4.8 Rangeland Applications. - 4.9 Water Resource Applications. - 4.10 Urban and Regional Planning Applications. - 4.11 Wetland Mapping. - 4.12 Wildlife Ecology Applications. - 4.13 Archaeological Applications. - 4.14 Environmental Assessment. - 4.15 Natural Disaster Assessment. - 4.16 Principles of Landform Identification and Evaluation. - Works Cited. - 5 Multispectral, Thermal, and Hyperspectral Sensing. - 5.1 Introduction. - 5.2 Across-Track Scanning. - 5.3 Along-Track Scanning. - 5.4 Example Across-Track Multispectral Scanner and Imagery. - 5.5 Example Along-Track Multispectral Scanner and Imagery. - 5.6 Geometric Characteristics of Across-Track Scanner Imagery. - 5.7 Geometric Characteristics of Along-Track Scanner Imagery. - 5.8 Thermal Scanning. - 5.9 Thermal Radiation Principles. - 5.10 Interpreting Thermal Scanner Imagery. - 5.11 Radiometric Calibration of Thermal Scanners. - 5.12 Temperature Mapping with Thermal Scanner Data. - 5.13 FLIR Systems. - 5.14 Hyperspectral Sensing. - 5.15 Conclusion . - Works Cited. - 6 Earth Resource Satellites Operating in the Optical Spectrum. - 6.1 Introduction. - 6.2 Early History of Space Imaging. - 6.3 Landsat Satellite Program Overview. - 6.4 Landsat-1,-2, and-3. - 6.5 Landsat-4 and -5. - 6.6 Landsat-6 Planned Mission. - 6.7 Landsat-7. - 6.8 Landsat Image Examples. - 6.9 Landsat Data Continuity Mission. - 6.10 Long-Term Future of the Landsat Program and the Global Earth Observation System of Systems. - 6.11 SPOT Satellite Program. - 6.12 SPOT-1,-2, and-3. - 6.13 SPOT-4. - 6.14 SPOT-5. - 6.15 SPOT Image Examples. - 6.16 Other Earth Resource Satellites. - 6.17 Meteorological Satellites Frequently Applied to Earth Surface Feature Observation. - 6.18 Ocean Monitoring Satellites. - 6.19 Earth Observing System. - 6.20 Space Station Remote Sensing . - Works Cited. - 7 Digital Image Interpretation and Analysis. - 7.1 Introduction. - 7.2 Image Rectification and Restoration. - 7.3 Image Enhancement. - 7.4 Contrast Manipulation. - 7.5 Spatial Feature Manipulation. - 7.6 Multi-Image Manipulation. - 7.7 Image Classification. - 7.8 Supervised Classification. - 7.9 The Classification Stage. - 7.10 The Training Stage. - 7.11 Unsupervised Classification. - 7.12 Hybrid Classification. - 7.13 Classification of Mixed Pixels. - 7.14 The Output Stage. - 7.15 Postclassification Smoothing. - 7.16 Object-Oriented Classification. - 7.17 Classification Accuracy Assessment. - 7.18 Data Merging and GIS Integration. - 7.19 Hyperspectral Image Analysis. - 7.20 Biophysical Modeling. - 7.21 Scale Effects. - 7.22 Image Transmission and Compression. - 7.23 Conclusion. - Works Cited. - 8 Microwave and Lidar Sensing. - 8.1 Introduction. - 8.2 Radar Development. - 8.3 Side-Looking Radar System Operation. - 8.4 Synthetic Aperture Radar. - 8.5 Geometric Characteristics of Radar Imagery. - 8.6 Transmission Characteristics of Radar Signals. - 8.7 Other Radar Image Characteristics. - 8.8 Radar Image Interpretation. - 8.9 Interferometric Radar. - 8.10 Radar Remote Sensing from Space. - 8.11 Seasat-1. - 8.12 Shuttle Imaging Radar. - 8.13 Almaz-1. - 8.14 ERS-1 and ERS-2. - 8.15 Envisat. - 8.16 JERS-1. - 8.17 ALOS. - 8.18 Radarsat. - 8.19 High Resolution Spaceborne Radar Systems. - 8.20 Shuttle Radar Topography Mission. - 8.21 Spaceborne Radar System Summary. - 8.22 Passive Microwave Sensing. - 8.23 Lidar. - Works Cited. - Appendix A Radiometric Concepts,Terminology, and Units. - Geometric Characteristics of Radiation Measurement. - Radiometric Terminology and Units. - Appendix B Remote Sensing Data and Information Resources. - Sources of Remote Sensing Data and Information. - Remote Sensing Periodicals. - Remote Sensing Glossaries. - Online Remote Sensing Courses and Tutorials. - Appendix C Sample Coordinate Transformation and Resampling Procedures. - Two-Dimensional Affine Coordinate Transformation. - Resampling Procedures . - Appendix D Radar Signal Concepts, Terminology,and Units. - Signal Power and Radar Cross Section. - Complex Amplitude of Radar Signals. - Index
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  • 130
    Series available for loan
    Series available for loan
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    Call number: ZSP-691-1983
    In: Research in Svalbard
    Type of Medium: Series available for loan
    Pages: 104 S.
    Language: English
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  • 131
    Call number: ZSP-553-19
    In: Meddelelser om Grønland
    Type of Medium: Monograph available for loan
    Pages: 52 S. : Ill., graph. Darst
    ISBN: 8717055628
    ISSN: 0106-1046
    Series Statement: Meddelelser om Grønland : Geoscience 19
    Language: English
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  • 132
    Call number: ZSP-553-198,2
    In: Meddelelser om Grønland
    Type of Medium: Monograph available for loan
    Pages: 266 S.
    ISBN: 8717021200
    Series Statement: Meddelelser om Grønland 198,2
    Language: English
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  • 133
    Call number: ZSP-168-587
    In: Berichte zur Polar- und Meeresforschung
    Type of Medium: 12
    Pages: Online-Ressource (104 S.).
    Series Statement: Berichte zur Polar- und Meeresforschung 587
    Language: English
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  • 134
    Call number: ZSP-558
    In: Middle atmosphere program
    Type of Medium: Monograph available for loan
    Pages: 97 S.
    Series Statement: Middle atmosphere program
    Language: English
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  • 135
    Call number: ZSP-558-28 ; MOP 46209 / Mitte
    In: Middle atmosphere program
    Type of Medium: Series available for loan
    Pages: 675 S. : Ill., graph. Darst.
    Language: English
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  • 136
    Call number: ZSP-558-27 ; MOP 46209 / Mitte
    In: Middle atmosphere program
    Type of Medium: Series available for loan
    Pages: 562 S. : Ill., graph. Darst.
    Language: English
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  • 137
    Monograph available for loan
    Berlin ; : Springer,
    Associated volumes
    Call number: M 09.0344
    In: [1]
    Type of Medium: Monograph available for loan
    Pages: XVIII, 475 S. : , Ill., graph. Darst. ; , 235 mm x 155 mm
    ISBN: 9783540710554 , 9783642090097
    URL: Cover
    Language: English
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  • 138
    Call number: AWI P6-10-0062 ; AWI P6-11-0002
    Description / Table of Contents: This volume provides a comprehensive, up-to-date account of how the physical and biological environment of the Antarctic continent and Southern Ocean has changed from Deep Time until the present day. It also considers how the Antarctic environment may change over the next century in a world where greenhouse gas concentrations are much higher than occurred over the last few centuries. The Antarctic is a highly coupled system with non-linear interactions between the atmosphere, ocean, ice and biota, along with complex links to the rest of the Earth system. Inpreparing this volume our approach has been highly cross-disciplinary, with the goal of reflecting the importance of the continent in global issues, such as sea level rise, the separation of natural climate variability from anthropogenic influences, food stocks, biodiversity and carbon uptake by the ocean. One hundred experts in Antarctic science have contributed and drafts of the manuscript were reviewed by over 200 scientists. We hope that it will be of value to all scientists with an interest in the Antarctic continent and the Southern Ocean, policy makers and those concerned with the deployment of observing systems and the development of climate models.
    Type of Medium: Monograph available for loan
    Pages: XXVIII, 526 S. : Ill., graph. Darst., Kt.
    ISBN: 9780948277221
    Language: English
    Note: CONTENTS: PREFACE EXECUTIVE SUMMARY 1 THE ANTARCTIC ENVIRONMENT AND THE GLOBAL SYSTEM 1.1 THE PHYSICAL SETTING 1.2 THE ANTARCTIC CRYOSPHERE 1.3 THE ROLE OF THE ANTARCTIC IN THE GLOBAL CLIMATE SYSTEM 1.4 OBSERVATIONS FOR STUDIES OF ENVIRONMENTAL CHANGE IN THE ANTARCTIC 1.5 THE CLIMATE OF THE ANTARCTIC AND ITS VARIABILITY 1.6 BIOTA OF THE ANTARCTIC 1.6.1 Terrestrial 1.6.2 Marine 2 OBSERVATIONS, DATA ACCURACY AND TOOLS 2.1 OBSERVATIONS, DATA ACCURACY AND TOOLS 2.1.1 Introduction 2.1.2 Meteorological and ozone observing in the Antarctic 2.1.3 In-situ ocean observations 2.1.4 Sea ice observations 2.1.5 Observations of the ice sheet and permafrost 2.1.6 Sea level 2.1.7 Marine biology 2.1.8 Terrestrial biology 2.1.9 Models 2.2 FUTURE DEVELOPMENTS AND RESEARCH NEEDS 3 ANTARCTIC CLIMATE AND ENVIRONMENT HISTORY IN THE PREINSTRUMENTAL PERIOD 3.1 INTRODUCTION 3.2 DEEP TIME 3.2.1 The Greenhouse world: from Gondwana breakup to 34 million years 3.2.2 Into the Icehouse world: the last 34 million years 3.3 THE LAST MILLION YEARS 3.3.1 Glacial interglacial cycles: the ice core record 3.3.2 The transition to Holocene interglacial conditions: the ice core record 3.3.3 Deglaciation of the continental shelf, coastal margin and continental interior 3.3.4 Antarctic deglaciation and its impact on global sea level 3.3.5 Sea ice and climate 3.4 THE HOLOCENE 3.4.1 Holocene climate change: regional to hemispheric perspectives 3.4.2 Changes in sea ice extent through the Holocene 3.4.3 Regional patterns of Holocene climate change in Antarctica 3.5 BIOLOGICAL RESPONSES TO CLIMATE CHANGE 3.5.1 The terrestrial environment 3.5.2 The marine environment 3.4.3 Regional patterns of Holocene climate change in Antarctica 3.6 CONCLUDING REMARKS 4 THE INSTRUMENTAL PERIOD 4.1 INTRODUCTION 4.2 CHANGES OF ATMOSPHERIC CIRCULATION 4.2.1 Modes of variability ..? 4.2.2 Depression tracks 4.2.3 Teleconnections 4.3 TEMPERATURE 4.3.1 Surface temperature 4.3.2 Upper air temperature changes 4.3.3 Attribution 4.4 CHANGES IN ANTARCTIC SNOWFALL OVER THE PAST 50 YEARS 4.4.1 General spatial and temporal characteristics of Antarctic snowfall 4.4.2 Long-term Antarctic snowfall accumulation estimates 4.4.3 Recent trends in Antarctic snowfall 4.5 ATMOSPHERIC CHEMISTRY 4.5.1 Antarctic stratospheric ozone in the instrumental period 4.5.2 Antarctic tropospheric chemistry 4.5.3 Aerosol, clouds and radiation 4.6 THE SOUTHERN OCEAN 4.6.1 Introduction 4.6.2 Australian sector 4.6.3 The Amundsen/Bellingshausen Seas 4.6.4 Variability and change in Ross Sea shelf waters 4.6.5 The Weddell Sea sector 4.6.6 Small-scale processes in the Southern Ocean 4.6.7 Dynamics of the circulation and water masses of the ACC and the polar gyres from model results 4.7 . ANTARCTIC SEA ICE COVER DURING THE INSTRUMENTAL PERIOD 4.7.1 Introduction 4.7.2 Sea ice cover in the pre-satellite era 4.7.3 Variability and trends in sea ice using satellite data 4.8 THE ICE SHEET AND PERMAFROST 4.8.1 Introduction 4.8.2 The Antarctic Peninsula 4.8.3 West Antarctica 4.8.4 East Antarctica 4.8.5 Calving 4.8.6 Sub-glacial water movement 4.8.7 Other changes in the ice sheet 4.8.8 Attribution of changes to the ice sheet 4.8.9 Conclusions regarding the ice sheet 4.8.10 Changes in Antarctic permafrost and active layer over the last 50 years 4.9 LONG TERM SEA LEVEL CHANGE 4.10 MARINE BIOLOGY 4.10.1 The open ocean system 4.10.2 Sea ice ecosystems 4.10.3 ENSO links and teleconnections to vertebrate life histories and population 4.10.4 Invertebrate physiology 4.10.5 Seasonality effect on the high Antarctic benthic shelf communities? 4.10.6 Macroalgal physiology and ecology 4.10.7 Marine/terrestrial pollution 4.11 BIOGEOCHEMISTRY - SOUTHERN OCEAN CARBON CYCLE RESPONSE TO HISTORICAL CLIMATE CHANGE 4.11.1 Introduction 4.11.2 CO2 fluxes in the Southern Ocean 4.11.3 Historical change - observed response 4.11.4 Historical change - simulated view 4.11.5 Changes in CO2 inventories 4.11.6 Concluding remarks 4.12 TERRESTRIAL BIOLOGY 5 THE NEXT 100 YEARS 5.1 INTRODUCTION 5.2 CLIMATE CHANGE 5.2.1 IPCC scenarios 5.2.2 Climate models 5.2.3 Atmospheric circulation 5.2.4 Temperature change over the Twenty First Century 5.2.5 Precipitation change over the Twenty First Century 5.2.6 Antarctic stratospheric ozone over the next 100 years 5.3 OCEAN CIRCULATION AND WATER MASSES 5.3.1 Simulation of present-day conditions in the Southern Hemisphere 5.3.2 Projections for the Twenty First Century 5.3.3 Long-term evolution of the Southern Ocean 5.3.4 Conclusions 5.4 SEA ICE CHANGE OVER THE TWENTY FIRST CENTURY 5.5 THE TERRESTRIAL CRYOSPHERE 5.5.1 Introduction 5.5.2 East Antarctic ice sheet 5.5.3 West Antarctic ice sheet 5.5.4 Antarctic Peninsula 5.5.5 Conclusions 5.5.6 Summary and needs for future research 5.6 EVOLUTION OF ANTARCTIC PERMAFROST 5.7 PROJECTIONS OF SEA LEVEL IN ANTARCTIC AND SOUTHERN OCEAN WATERS BY 2100 5.7.1 Regional projections of mean sea-level rise 5.8 BIOGEOCHEMISTRY - RESPONSE OF THE SOUTHERN OCEAN CARBON CYCLE TO FUTURE CLIMATE CHANGE 5.8.1 Background 5.8.2 Future Southern Ocean carbon response 5.8.3 Response to increased CO2 uptake 5.8.4 Concluding remarks 5.9 BIOLOGY 5.9.1 Terrestrial Biology 5.9.2 Marine Biology 5.9.3 The Antarctic marine ecosystem in the year 2100 6 RECOMMENDATIONS 7 REFERENCES.
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  • 139
    Call number: SR 90.0018(129) ; ZSP-183-129
    In: Bulletin / Grønlands Geologiske Undersøgelse, No. 129
    Description / Table of Contents: The Holocene stratigraphy in Scoresby Sund is based on climatic change as reflected by fluctuations in fjord and valley glaciers, immigration and extinction of marine molluscs, and the vegetation history recorded in pollen diagrams from five lakes. The histories are dated by C-14, and indirectly by emergence curves showing the patterns of isostatic uplift. From c. 10100-10400 to 9400 yr BP the major fjord glaciers showed oscillatory retreat with abundant moraine formation, the period of the Milne Land Moraines. The vegetation in the ice free areas was a sparse type of fell field vegetation but with thermophilous elements indicating temperatures similar to the present. From 9400 yr BP the fjord glaciers retreated rapidly in the narrow fjords, the few moraines formed are referred to the R0defjord stages and indicate topographically conditioned stillstands. At 8000 yr BP the low arctic Betula nana imigrated into the area, and in the period until 5000 yr BP dense dwarf shrub heath grew in areas where it is now absent. In the fjords the subarctic Mytilus edulis and Pecten islandica lived, suggesting a climate warmer than the present. From c. 5000 yr BP the dense dwarf shrub heath began to disappear in the coastal areas, and a 'poor' heath dominated by the high arctic Salix Arctica and Cassiope tetragona expanded. These two species, which are now extremely common, apparently did not grow in the area until c. 6000 yr BP. In lakes in the coastal area minerogenic sedimentation at c. 2800 yr BP, reflecting the general climatic deterioration.
    Type of Medium: Series available for loan
    Pages: 66 S. : Ill., graph. Darst., Kt. + 7 Beil.
    Series Statement: Bulletin / Grønlands Geologiske Undersøgelse 129
    Language: English
    Note: CONTENTS: Introduction. - Topography and hydrography. - Climate, glaciation, permafrost. - Notes on the scientific exploration of the area. - Sea level changes. - C-14 dates on shell material, corrections and errors. - Marine limits. - Emergence curves. - Marine faunas. - Glaciation history. - Pleistocene glaciation. - The Milne Land Moraines. - Glacial retreat, the Rødefjord stages. - Glacial readvance. - Climatic implications. - Comparison with other areas. - Pollen analytical investigations. - Field methods. - Lake sediments. - C-14 dates of lake sediments and rates of sedimentation. - Pollen preparation and calculation procedures. - Pollen identification. - Description of sites and pollen diagrams. - Notes on the present vegetation. - Discussion and reconstruction of vegetation types. - Plant immigration and climatic change. - Summary of the vegetation history. - Comparison with other areas. - General notes on the climatic development. - Acknowledgements. - References.
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  • 140
    Monograph available for loan
    Monograph available for loan
    Moscow : Mir Publ.
    Call number: PIK L 110-11-0182
    Description / Table of Contents: Contents: Part One: Fundamentals of Soil Formation and Properties of Soils ; 1. Principles of soil formation ; 2. Mineral part of soil and its origin ; 3. Soil physics ; 4. Soil chemistry ; 5. Physical chemistry of soils ; 6. Soil biochemistry ; 7. Elementary processes of soil formation ; Part Two: Natural Factors of Soil Evolution ; 8. Rocks and soil formation ; 9. The relationship between weathering and soil-forming processes under tropical conditions ; 10. Biological factors of soil formation ; 11. Climate and soil formation ; 12. Soil formation as a function of relief and soil age ; Part Three: Classification and Characteristics of Main Soil Types ; 13. Fundamentals of soil classification ; 14. Experience in grouping the soils in the tropics and subtropics ; 15. Siallitic neutral-alkaline soils ; 16. Allitic (ferrallitic) soils ; 17. Podzolic ferrallitic tropical soils ; 18. Yellow quartz-allitic soils ; 19. Red ferritic soils ; 20. Volcanic soils (Andosols) ; 21. Hydromorphic soils (Gleysols) ; 22. Saline (Halomorphic) soils ; 23. Alluvial soils ; 24. Problems of soil conservation ; 25. Problems of soil fertility improvement ; 26. Soil cartography and its practical importance
    Type of Medium: Monograph available for loan
    Pages: 422 S. : graph. Darst.
    Uniform Title: Osnovy tropičeskogo počvovedenija
    Language: English
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  • 141
    Monograph available for loan
    Monograph available for loan
    Hoboken : Wiley-Interscience
    Call number: AWI S2-11-0056
    Description / Table of Contents: From a preeminent authority-a modern and applied treatment of multiway data analysis This groundbreaking book is the first of its kind to present methods for analyzing multiway data by applying multiway component techniques.
    Type of Medium: Monograph available for loan
    Pages: XXI, 579 S. : Ill., graph. Darst.
    ISBN: 9780470164976
    Series Statement: Wiley series in probability and statistics
    Language: English
    Note: Contents: Part 1: Data, Models, and Algorithms. - 1. Overture. - 2. Overview. - 3. Three-way and multiway data. - 4. Component models for fully-crossed designs. - 5. Algorithms for multiway models. - Part 2: Data Handling, Model Selection, and Interpertation. - 6. Preprocessing. - 7. Missing data in multiway analysis. - 8. Model and dimensionality selection. - 9. Interpreting component models. - 10. Improving interpretation through rotations. - 11. Graphical displays for components. - 12. Residuals, outliers, and robustness. - Part 3: Multiway Data and Their Analysis. - 13. Modeling multiway profile data. - 14. Modeling multiway rating scale data. - 15. Exploratory multivariate longitudinal analysis. - 16. Three-mode clustering. - 17. Multiway contingency tables. - 18. Three-way binary data. - 19. From three-way to four-way data and beyond. - Appendix A: Standard notation for mulitway analysis. - Appendix B: Biplots and their interpretation.
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  • 142
    Monograph available for loan
    Monograph available for loan
    Beijing [u.a.] : China Ocean Press [u.a.]
    Call number: PIK N 455-11-0237 ; MOP 47245 / Mitte
    Description / Table of Contents: Contents: 1. The background of the atmospheric circulation ; 2. Cold outbreak and winter weather ; 3. Cyclone and spring weather ; 4. Rainy season in China (I) ; 5. Rainy season in China (II) ; 6. The subtropical high ; 7. Weather systems on the Tibetan plateau ; 8. Typhoon ; 9. Other tropical weather systems ; 10. Autumn weather
    Type of Medium: Monograph available for loan
    Pages: 269, [47] Seiten , Illustrationen
    ISBN: 3540167153 , 0-387-16715-3
    Language: English
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  • 143
    Monograph available for loan
    Monograph available for loan
    Warszawa : Polish Scient. Publ.
    Call number: PIK N 456-11-0194
    Description / Table of Contents: Contents: 1. Climatology as a science ; 2. Climate-forming factors ; 3. Geographical distribution and variation of major meteorological elements ; 4. A brief survey of major types of climate ; 5. Changes and fluctuations of climates
    Type of Medium: Monograph available for loan
    Pages: XIV, 422 S. : graph. Darst., 1 Kt.
    Uniform Title: Klimatologia ogólna
    Language: English
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  • 144
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/8
    In: CRREL Report, 79-8
    Description / Table of Contents: Sea ice ridging statistics obtained from a series of laser surface roughnessprofiles are examined. Each set of profiles consists of six 200-km-long flight tracks oriented approximately perpendicular to the coastline of the Chukchi and Beaufort Seas. The landward ends of the profiles were located at Point Lay, Wainwright, Barrow, Lonely, Cross Island and Barter Island. The flights were made in February, April, August, and December 1976, and one additional profile was obtained north of Cross Island during March 1978. It was found that although there is a systematic variation in mean ridge height (h) with season (with the highest values occurring in late winter), there is no systematic spatial variation in h at a given time. The number of ridges/km (micron) is also high during the late winter, with the highest values occurring in the Barter and Cross Island profiles . In most profiles, the ice 20 to 60 km from the coast is more highly deformed (higher micron values) than the ice either nearer the coast or farther seaward. The Wadhams model for the distribution of ridge heights gives better agreement with observed values in the higher ridge categories than does the Hibler model. Estimates of the spatial recurrence frequency of large pressure ridges are made by using the Wadhams model and also by using an extreme value approach. In the latter, the distribution of the lagest ridges per 20 km of laser track was found to be essentially normal
    Type of Medium: Series available for loan
    Pages: iv, 28 Seiten , Illustrationen
    Series Statement: CRREL Report 79-8
    Language: English
    Note: CONTENTS Abstract Preface Introduction Data collection and processing Analysis General Variations in ridging Ridge height distributions Occurrence of high ridges The tail of the distribution Extreme values Applications to offshore design Conclusions Literature cited Appendix A. Tabulated ice ridge data
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  • 145
    Call number: ZSP-201-79/7
    In: CRREL Report, 79-7
    Description / Table of Contents: Sediments beneath the Beaufort Sea near Prudhoe Bay, Alaska, were probed at 27 sites using a static cone penetrometer to determine engineering properties and distribution of material types, including ice-bonded sediments. The probe provided both point and casing resistance data and thermal profiles. At five sites these data were correlated with information from adjacent drilled and sampled holes. These control data and the quality of the probe information permitted profiles of sediment type and occurrence of ice-bonded material to be developed along three lines that included various geological features and depositional environments. Material properties were quite variable in the upper 14 m of sediments probed. In general, softer, finer-grained sediments occurred in the upper layers, while penetration refusal was met in stiff gravels to 10 to 12 m below the seabed. Seabed temperatures during the study were all below 0 C. However, because of uncertainties in freezing point values caused by brines, evaluation of the penetration resistance data was required to identify the occurrence of ice-bonded sediments. The coupling of thermal and penetration resistance data revealed that seasonally ice-bonded sediments occurred where the sea ice froze back to or near the seabed. Deeper, perennially frozen sediments also appeared to be present at several probe sites. The penetration data obtained can be used to aid in the design of shallow and deep foundations in both ice-bonded and unfrozen subsea sediments.
    Type of Medium: Series available for loan
    Pages: iv, 49 Seiten , Illustrationen
    Series Statement: CRREL Report 79-7
    Language: English
    Note: CONTENTS Abstract Preface Introduction Equipment Data collection and reduction Data analysis and interpretation Point penetration resistance and material properties Lithologic and temperature profiles Casing penetration resistance Applications Shallow foundations Deep foundations Foundations in permafrost Correlations with laboratory tests Conclusions Selected bibliography Appendix A: Description of penetrometer and test procedures Appendix B: Point resistance and skin friction data
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  • 146
    Call number: ZSP-201-78/28
    In: CRREL Report, 78-28
    Type of Medium: Series available for loan
    Pages: x, 112 Seiten , Illustrationen
    Series Statement: CRREL Report 78-28
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors Introduction Descriptions of road test sections Test equipment and procedures Field repetitive plate bearing tests Data analysis General Layered-elastic analysis of the pavement systems Statistical analysis Flexural analysis Summary and conclusions Literature cited Appendix A: Resilient surface deflections for the test points
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  • 147
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/24
    In: CRREL Report, 78-24
    Type of Medium: Series available for loan
    Pages: v, 12 Seiten , Illustrationen
    Series Statement: CRREL Report 78-24
    Language: English
    Note: CONTENTS Abstract Preface Introduction Comparison of winters Ship effects Measured forces Sequential breaking of the structure Discussion Conclusions Recommendations Literature cited Appendix A. Force level fluctuations in west ice boom, 20 January 1977
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  • 148
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/19
    In: CRREL Report, 78-19
    Type of Medium: Series available for loan
    Pages: iv, 21 Seiten , Illustrationen
    Series Statement: CRREL Report 78-19
    Language: English
    Note: CONTENTS Abstract Preface Introduction Previous work Methods and results Methods of analysis Salinity-chlorophyll a associations Discussion Comparison of ice and water column standing crops Estimated mass of ice associated chl. a Mechanism of ice algae formation in the Weddell Sea Differences between the biological environments of fast and drifting pack ice Conclusions Literature cited Appendix A. Species variations - ice and water column
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  • 149
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/17
    In: CRREL Report, 78-17
    Description / Table of Contents: Abstract: This investigation utilized historical and recent aerial photographs and satellite imagery in 1) estimating changes in positions of the high-water line and sea cliff break and base, in rates of accretion and/or erosion, and in volumes of transported sediment, and 2) providing a preliminary evaluation of the direction of littoral transport along the outer Cape Cod coast. Using aerial photographs acquired in 1938, 1952, 1971 and 1974 with manual photointerpretation techniques, changes in the distances from selected reference points to the cliff break, cliff base and the high-water line were measured. LANDSAT-1 and -2 imagery acquired from 1 September 1972 to 28 May 1975 was evaluated for use in determining the directions of littoral transport that are active the predominant amount of time. Although the imagery has been very useful for this purpose at other locations, it proved to be useless along the outer shore of Cape Cod. Largest net migrations of the high water line from 1938 to 1974 occurred in the northern and southern portions of this coast. The northern maximum high water line was 321.4 ft, the southern was 1794.6 ft. The central portion of the coast was generally more stable with changes varying from 6.8 to 157.6 ft. Cliff-base recession rates varied from 0.4 to 7.3 ft/yr. Maximum estimated net volume of sediment deposited per linear foot of beach from 1938 to 1974 was 334 yd^3 (based on 2 yd^3/ft of recession or accretion); maximum eroded was 914 yd^3. Changes in the configuration of spits were used to evaluate directions of littoral transport since suspended sediment concentrations were generally not sufficient to act as natural tracers of surface currents. Based on the literature and a determination of the portion of the coast perpendicular to the direction of dominant wave approach, the location of the nodal zone for predominant littoral directions of drift probably shifts between the area near Spectacle Pond and North Truro Air Force Station. This investigation has illustrated a photo interpretation technique that is useful in performing a reconnaissance of coastal change. The data obtained from this method can be used to supplement those acquired by ground surveys and are valid as first approximations for planning subsequent, more detailed surveys.
    Type of Medium: Series available for loan
    Pages: vi, 49 Seiten , Illustrationen
    Series Statement: CRREL Report 78-17
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric units of measurement Introduction Background Previous investigations Analytical procedures Results and discussion Shoreline changes: High-water line Shoreline changes: Cliff recession Volumetric changes Nodal zone location and direction of littoral transport Error evaluation Summary and conclusions Future research Selected bibliography Appendix A: Maps of shoreline with overlays for 1938, 1952, 1971 and 1974 Appendix B: Supplementary data for estimating shoreline change
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  • 150
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/14
    In: CRREL Report, 78-14
    Description / Table of Contents: The analytical solution and the numerical study of the eigenvalue problem for determining the buckling pressure of an infinite elastic plate floating on water and stressed uniformly along the periphery of an internal hole is presented. The boundary conditions considered are the clamped-, simple-, and free-edge conditions. Small buckling pressure occurs only for the free-edge condition. The shape of the deflection for the free-edge condition suggests that buckling is an important mechanism of failure.
    Type of Medium: Series available for loan
    Pages: v, 55 Seiten , Illustrationen
    Series Statement: CRREL Report 78-14
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction 1. The problem 2. Abstract of the result Part I. Fundamental solutions 3. Fuchsian type solutions 4. Contour integral solution 5. Integration of the integral solution 6. Fundamental solutions for α = 1 7. Fundamental solutions for α = 0 8. Eigenvalues for α = 0 9. Fundamental solutions for α 〉 1 Part II. Asymptotic expansions 10. Asymptotic expansion for 0 〈 α ⩽1 11. Asymptotic expansion for 1 ≦ α ≦ 2 12. Asymptotic expansion for 2 ≦ α ≦ ∞ Part III. Eigenvalues 13. Range of eigenvalues 14. Eigenvalues for the free-edge condition 15. Eigenvalues for the clamped-edge and simple-edge conditions 16. Deflection Acknowledgement Literature cited Appendix A. Analytical continuation at the singular point Appendix B. Tensorial transformations Appendix C. Comparison of the semi-infinite plate buckling with the asymptotic buckling
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  • 151
    Call number: ZSP-405a-08-0005
    In: JAXA Research and Development Report
    Type of Medium: Series available for loan
    Pages: 10 S.
    Series Statement: JAXA Research and development report RR-06-018E
    Language: English
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  • 152
    Monograph available for loan
    Monograph available for loan
    New York : Freeman
    Call number: AWI A3-08-0023 ; PIK N 456-08-0279 ; PIK N 456-12-0032
    Type of Medium: Monograph available for loan
    Pages: XX, 388 Seiten , Illustrationen
    Edition: Second edition
    ISBN: 0716784904 , 9780716784906
    Language: English
    Note: Contents Preface PART I Framework of Climate Science CHAPTER 1 Overview of Climate Science Climate and Climate Change 1-1 Geologic Time Tools of Climate Science: Temperature Scales 1-2 How This Book Is Organized Development of Climate Science 1-3 How Scientists Study Climate Change Overview of the Climate System 1-4 Components of the Climate System 1-5 Climate Forcing 1-6 Climate System Responses 1-7 Time Scales of Forcing Versus Response 1-8 Differing Response Rates and Climate-System Interactions 1-9 Feedbacks in the Climate System Climate Interactions and Feedbacks: Positive and Negative Feedbacks CHAPTER 2 Climate Archives, Data, and Models Climate Archives, Dating, and Resolution 2-1 Types of Archives 2-2 Dating Climate Records 2-3 Climatic Resolution Climatic Data 2-4 Biotic Data 2-5 Geological and Geochemical Data Climate Models 2-6 Physical Climate Models 2-7 Geochemical Models PART II Tectonic-Scale Climate Change CHAPTER 3 CO2and Long-Term Climate Greenhouse Worlds Faint Young Sun Paradox Carbon Exchanges Between Rocks and the Atmosphere 3-1 Volcanic Input of Carbon from Rocks to the Atmosphere 3-2 Removal of CO2 from the Atmosphere by Chemical Weathering Climatic Factors That Control Chemical Weathering Is Chemical Weathering Earth’s Thermostat? 3-3 Greenhouse Role of Water Vapor Is Life the Ultimate Control on Earth’s Thermostat? 3-4 Gaia Hypothesis Looking Deeper into Climate Science: Organic Carbon Subcycle Was There a “Thermostat Malfunction”? A Snowball Earth? CHAPTER Plate Tectonics and Long-Term Climate Plate Tectonics 4-1 Structure and Composition of Tectonic Plates 4-2 Evidence of Past Plate Motions Polar Position Hypothesis 4-3 Glaciations and Continental Positions Since 500 Myr Ago Modeling Climate on the Supercontinent Pangaea 4-4 Input to the Model Simulation of Climate on Pangaea Looking Deeper into Climate Science: Brief Glaciation 440 Myr Ago 4-5 Output from the Model Simulation of Climate on Pangaea Tectonic Control of CO2 Input: BLAG Spreading-Rate Hypothesis 4-6 Control of CO2 Input by Seafloor Spreading 4-7 Initial Evaluation of the BLAG Spreading Rate Hypothesis Tectonic Control of CO2Removal: Uplift-Weathering Hypothesis 4-8 Rock Exposure and Chemical Weathering 4-9 Case Study: The Wind River Basin of Wyoming 4-10 Uplift and Chemical Weathering 4-11 Case Study: Weathering in the Amazon Basin 4-12 Weathering: Both a Climate Forcing and a Feedback? CHAPTER 5 Greenhouse Climate What Explains the Warmth 100 Myr Ago? 5-1 Model Simulations of the Cretaceous Greenhouse 5-2 What Explains the Data-Model Mismatch? 5-3 Relevance of Past Greenhouse Climate to the Future Sea Level Changes and Climate 5-4 Causes of Tectonic-Scale Changes in Sea Level 5-5 Effect of Changes in Sea Level on Climate Looking Deeper into Climate Science: Calculating Changes in Sea Level Asteroid Impact Large and Abrupt Greenhouse Episode near 50 Myr Ago CHAPTER 6 From Greenhouse to Icehouse: The Last 50 Million Years Global Climate Change Since 50 Myr Ago 6-1 Evidence from Ice and Vegetation 6-2 Evidence from Oxygen Isotope Measurements 6-3 Evidence from Mg/Ca Measurements Do Changes in Geography Explain the Cooling? 6-4 Gateway Hypothesis 6-5 Assessment of Gateway Changes Hypotheses Linked to Changes in CO2 6-6 Evaluation of the BLAG Spreading Rate Hypothesis 6-7 Evaluation of the Uplift Weathering Hypothesis Climate DebateTiming of the Uplift in Western North America Future Climate Change at Tectonic Scales Looking Deeper into Climate Science: Organic Carbon: Monterrey Hypothesis PART III Orbital-Scale Climate Change CHAPTER 7 Astronomical Control of Solar Radiation Earth’s Orbit Today 7-1 Earth’s Tilted Axis of Rotation and the Seasons 7-2 Earth’s Eccentric Orbit: Distance Between Earth and Sun Long-Term Changes in Earth’s Orbit 7-3 Changes in Earth’s Axial Tilt Through Time Tools of Climate Science: Cycles and Modulation 7-4 Changes in Earth’s Eccentric Orbit Through Time 7-5 Precession of the Solstices and Equinoxes Around Earth’s Orbit Looking Deeper into Climate Science: Earth’s Precession as a Sine Wave Changes in Insolation Received on Earth 7-6 Insolation Changes by Month and Season 7-7 Insolation Changes by Caloric Seasons Searching for Orbital-Scale Changes in Climatic Records 7-8 Time Series Analysis 7-9 Effects of Undersampling Climate Records 7-10 Tectonic-Scale Changes in Earth’s Orbit CHAPTER 8 Insolation Control of Monsoons Monsoon Circulations 8-1 Orbital-Scale Control of Summer Monsoons Orbital-Scale Changes in North African Summer Monsoons 8-2 “Stinky Muds” in the Mediteranean 8-3 Freshwater Diatoms in the Tropical Atlantic 8-4 Upwelling in the Equatorial Atlantic Orbital Monsoon Hypothesis: Regional Assessment 8-5 Cave Speleothems in China and Brazil 8-6 Phasing of Summer Monsoons Looking Deeper into Climate Science: Insolation-Driven Monsoon Responses: Chronometer for Tuning Monsoon Forcing Earlier in Earth’s History 8-7 Monsoons on Pangaea 200 Myr Ago 8-8 Joint Tectonic and Orbital Control of Monsoons CHAPTER 9 Insolation Control of Ice Sheets Milankovitch Theory: Orbital Control of Ice Sheets Modeling the Behavior of Ice Sheets 9-1 Insolation Control of Ice Sheet Size 9-2 Ice Sheets Lag Behind Summer Insolation Forcing 9-3 Delayed Bedrock Response Beneath Ice Sheets Looking Deeper into Climate Science: Ice Volume Response to Insolation 9-4 Full Cycle of Ice Growth and Decay 9-5 Ice Slipping and Calving Northern Hemisphere Ice Sheet History 9-6 Ice Sheet History: δ18O Evidence 9-7 Confirming Ice Volume Changes: Coral Reefs and Sea Level Is Milankovich’s Theory the Full Answer? Looking Deeper into Climate Science: Sea Level on Uplifting Islands CHAPTER 10 Orbital-Scale Changes in Carbon Dioxide and Methane Ice Cores 10-1 Drilling and Dating Ice Cores 10-2 Verifying Ice-Core Measurements of Ancient Air 10-3 Orbital-Scale Carbon Transfers: Carbon Isotopes Orbital-Scale Changes in CO2 10-4 Where Did the Missing Carbon Go? 10-5 δ13C Evidence of Carbon Transfer How Did the Carbon Get into the Deep Ocean? 10-6 Increased CO2 Solubility in Seawater 10-7 Biological Transfer from Surface Waters A Closer Look at Climate Science: Using δ13C to Measure Carbon Pumping 10-8 Changes in Deep-Water Circulation Orbital-Scale Changes in CH4 Orbital-Scale Climatic Roles: CO2and CH4 CHAPTER 11 Orbital-Scale Interactions, Feedbacks, and Unsolved Problems Climatic Responses Driven by the Ice Sheets Mystery of the 41,000-Year Glacial World 11-1 Did Insolation Really Vary Mainly at 41,000 Years? 11-2 Interhemispheric Cancellation of 23,000-Year Ice Volume Responses? 11-3 CO2 Feedback at 41,000 Years? Mystery of the ~100,000-Year Glacial World 11-4 How Is the Northern Ice Signal Transferred South? Why did the Northern Ice Sheets Vary at ~100,000 Years? Looking Deeper into Climate Science: Link Between Forcing and the Time Constants of Ice Response 11-5 Ice Interactions with Bedrock 11-6 Ice Interactions with the Local Environment 11-7 Ice Interactions with Greenhouse Gases PART IV Deglacial Climate Change CHAPTER 12 Last Glacial Maximum Glacial World: More Ice, Less Gas 12-1 Project CLIMAP: Reconstructing the Last Glacial Maximum 12-2 How Large Were the Ice Sheets? 12-3 Glacial Dirt and Winds Testing Model Simulations Against Biotic Data 12-4 COHMAP: Data-Model Comparisons 12-5 Pollen: Indicator of Climate on the Continents 12-6 Using Pollen for Data-Model Comparisons Data-Model Comparisons of Glacial Maximum Climates 12-7 Model Simulations of Glacial Maximum Climates 12-8 Climate Changes near the Northern Ice Sheets 12-9 Climate Changes far from the Northern Ice Sheets How Cold Were the Glacial Tropics? 12-10 Evidence for a Small Tropical Cooling 12-11 Evidence for a Large Tropical Cooling 12-12 Actual Cooling Was Medium-Small CHAPTER 13 Climate During and Since the Last Deglaciation Fire and Ice: Shift in the Balance of Power 13-1 When Did the Ice Sheets Melt? 13-2 Coral Reefs and Rising Sea Level 13-3 Glitches in the Deglaciation: Deglacial Two-Step To
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  • 153
    Call number: ZSP-403-302
    In: Jare Data Reports
    Type of Medium: Series available for loan
    Pages: 59 S. : überw. graph. Darst.
    Series Statement: Jare Data Reports 302 : Upper Atmosphere Physics 25
    Language: English
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  • 154
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    In: CRREL Report, 79-5
    Description / Table of Contents: Abstract: This report presents data from an experimental program undertaken to develop information on proposed and existing chemical grout solutions to provide engineering properties in connection with grouting of soils in ambient temperatures of 39° ±1°F (3.88°C) and below. Twelve grout solutions were investigated, including organic chemicals, sodium silicates, cements, and clay (bentonite). Set or gel tests were performed on each chemical solution, in the center of which a thermocouple was placed for measuring the rates of heat of reaction, except those of the cements and the clay. These solutions consisted of the mixing portions of the chemicals and were placed into 4-in.-diam by approximately 6-in.-long cylinders at an ambient temperature of 39°F.
    Type of Medium: Series available for loan
    Pages: v, 38 Seiten , Illustrationen
    Series Statement: CRREL Report 79-5
    Language: English
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  • 155
    Call number: AWI G7-08-0042
    Type of Medium: Monograph available for loan
    Pages: 98 S. : Ill., graph. Darst.
    Series Statement: Series of dissertations submitted to the faculty of mathematics and natural sciences, University of Oslo 645
    Language: English
    Note: Oslo, Univ., Diss., 2007
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  • 156
    Call number: AWI A2-08-0041
    Description / Table of Contents: Contents: 1 Introduction. - 1.1 Key aspects of the climate of Antarctica. - 1.1.1 Temperature. - 1.1.2 Atmospheric circulation. - 1.1.3 Precipitation. - 1.1.4 The ice sheet as an climate archive. - 1.1.5 Regional climate models. - 1.2 Antarctica in a changing global climate. - 1.3 Ice sheet mass balance. - 1.3.1 Mass balance estimates from satellite altimetry. - 1.3.2 Mass balance estimates from gravity. - 1.3.3 Mass budget using inSAR. - 1.3.4 Current level of understanding. - 1.4 Surface mass balance. - 1.5 Contents of this thesis. - 2 Characteristics of the Antarctic surface mass balance. - 2.1 Introduction. - 2.2 Model description. - 2.2.1 Snow albedo. - 2.2.2 Surface roughness lengths. - 2.2.3 Snow model. - 2.2.4 Correction of the liquid and solid precipitation. - 2.3 Results. - 2.3.1 Solid precipitation. - 2.3.2 Sublimation. - 2.3.3 Melt. - 2.3.4 Surface mass balance (SMB). - 2.3.5 Seasonality of the mass balance. - 2.3.6 Interannual variability and trends. - 2.4 Discussion. - 2.4.1 Spatial distribution of measured and modeled SMB. - 2.4.2 The integrated SMB. - 2.4.3 Interannual variability and trends. - 2.5 Conclusions. - 3 Reassessment of the Antarctic surface mass balance. - 3.1 Introduction. - 3.2 Model description. - 3.3 Observations and data handling. - 3.3.1 Excluded areas. - 3.3.2 Model interpolation. - 3.3.3 Observationally dense areas. - 3.4 Results. - 3.4.1 RACMO2/ANT compared to V99. - 3.4.2 RACMO2/ANT compared to observations. - 3.4.3 Impact of temporal mismatch. - 3.4.4 Elevation and SMB. - 3.5 Discussion. - 3.5.1 Statistical robustness of the results. - 3.5.2 An evaluation of model performance. - 3.5.3 Towards a better understanding of Antarctic SMB. - 3.6 Conclusions. - 4 Error evaluation of a surface mass balance estimate. - 4.1 Introduction. - 4.2 Method. - 4.2.1 Definition of error margins. - 4.2.2 Verifying error margins. - 4.2.3 Spatial error autocorrelation. - 4.2.4 Error for basin mean SMB. - 4.3 Application. - 4.4 Discussion. - 5 Heat budget of the lower East Antarctic atmosphere. - 5.1 Introduction. - 5.2 Model description. - 5.3 The heat budget. - 5.3.1 Derivation of temperature tendency equation. - 5.3.2 Calculation of individual terms. - 5.4 Model evaluation. - 5.4.1 Temperature and wind. - 5.4.2 Surface energy budget. - 5.5 Results. - 5.5.1 Binning procedure. - 5.5.2 Climatological setting. - 5.5.3 Winter heat budgets. - 5.5.4 Summer heat budgets. - 5.6 Conclusions. - 6 Factors Controlling the Near Surface Temperature in Antarctica. - 6.1 Introduction. - 6.2 Model description and evaluation. - 6.3 Methods. - 6.3.1 Definition of the heat budget. - 6.3.2 Definition of free atmosphere parameters. - 6.3.3 Definition of ABL depth. - 6.3.4 Example of vertical profiles. - 6.4 Results: Winter. - 6.4.1 External heating and surface interactions. - 6.4.2 Heat advection in East Antarctica. - 6.4.3 Spatial distribution of AdvH and AdvV. - 6.4.4 Synoptic and persistent large-scale and ABL contributions to AdvH. - 6.5 Results: Summer. - 6.5.1 External heating and surface interactions. - 6.5.2 Heat advection. - 6.6 Summary and conclusions. - 7 Suggestions for future work. - 7.1 Applications for heat budget analyses. - 7.2 SMB of the Antarctic ice sheet. - 7.3 A pilot study with decreased ice crystal fall speed. - Bibliography. - Samenvatting. - Dankwoord. - Curriculum Vitae. - Publications.
    Type of Medium: Monograph available for loan
    Pages: VII, 138 S. : graph. Darst.
    Language: English
    Note: Utrecht, Univ., Diss., 2008
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  • 157
    Call number: M 97.0283
    Type of Medium: Monograph available for loan
    Pages: x, 514 S.
    ISBN: 9971501074
    Uniform Title: Kvantovaia teoriia uglovogo momenta
    Classification:
    C.3.3.
    Language: English
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  • 158
    Call number: ZSP-201-78/23
    In: CRREL Report, 78-23
    Type of Medium: Series available for loan
    Pages: vi, 53 Seiten , Illustrationen
    Series Statement: CRREL Report 78-23
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Conversion factors: Metric (SI) to U.S. customary units of measurement Introduction Selection of experimental approach Previous investigations of effect of freeze-thaw on soil deform ability Selection of laboratory test method Selection of method of field validation tests Field repeated-load plate-bearing tests Test pavements, soils and materials Test procedures and results Resilient modulus of subgrade calculated from field tests Mathematical model Characterization of asphalt concrete Characterization of frozen silt Calculated resilient modulus of silt within the zone of freezing Laboratory repeated-load triaxial tests Specimens, equipment and testing procedures Apparatus Procedures Resilient properties calculated from laboratory tests Calculation methods Asphalt concrete - test results Asphalt concrete - statistical analysis and discussion Silt - test results Silt - statistical analysis Discussion and conclusions Literature cited Appendix A. Repeated-load plate-bearing test results Appendix B. Laboratory repeated-load triaxial test results Appendix C. Regression equation coefficients for resilient modulus and Poisson’s ratio from repeated-load triaxial test data on asphalt concrete and silt Appendix D. Detailed procedures for repeated-load triaxial testing
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  • 159
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/21
    In: CRREL Report, 78-21
    Description / Table of Contents: This study investigates the possibility of providing estimates of the time of occurrence and length of the freezing season for any location in East and West Germany by using the average Januavy air temperature (AJ AT) as an index. The results indicate that reliable values of the mean freezing index can be obtained from the AJAT relationships which are developed for Germany. This association is further verified using data from the northeastern part of the U.S., and the AJ AT is then used to determine the average starting and ending dates (and hence the probable length) of the freezing season for stations in Germany. The AJ AT and the average dates of snowfall occurrence for numerous locations in the U.S. and Germany are also correlated. Interrelationships between these parameters and the average number of days with snow on the ground for stations up to 3000 m in elevation in Germany are examined. A detailed AJ AT map for East and West Germany, in which data from 134 stations, latitude, altitude and regional influences are considered, is developed in order to make the relationships usable. A historical review of the literature on snow studies in Germany and a brief discussion of snow-cover interpretation by satellite photography are included
    Type of Medium: Series available for loan
    Pages: v, 48 Seiten , Illustrationen , 1 Karte
    Series Statement: CRREL Report 78-21
    Language: English
    Note: CONTENTS Abstract Preface Introduction Historical literature review Relationships between midwinter temperature and freezing season Mean freezing index 4 Average January air temperature U.S. comparative study Correlation of AJAT and duration of freezing season Relationships between average January air temperature and snow conditions U.S. relationships German relationships Mapping of average January air temperatures Analysis of observed AJ AT data Development of detailed maps Application and discussion Examples Influence of vegetation Literature cited Appendix A. interpretation of snow cover by satellite Appendix B. Contour, station elevation and Aj AT maps for East and West Germany
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  • 160
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/13
    In: CRREL Report, 78-13
    Description / Table of Contents: Field observations of the growth fabrics of the fast and near-fast ice along the coasts of the Beaufort and Chukchi Seas show that, at depths of more than 60 cm below the upper ice surface, the sea ice crystals show striking alignments within the horizontal plane. At one site this alignment was well developed at a depth of 15 cm and in all cases the degree of preferred orientation increased with depth, with the strongest orientations occurring at the bottom of the ice sheet. In general the c-axes of the crystals were aligned roughly E-W parallel to the coast. In the vicinity of islands the alignment roughly paralleled the outlines of the islands and in narrow passes between islands the alignment paralleled the channel. Our observations, as well as similar observations made in the Kara Sea by Cherepanov, can be explained if it is assumed that the c-axes of the crystals are aligned parallel to the 'long-term' current direction at the sea ice/sea water interface. The alignments are believed to be the result of geometric selection among the growing crystals, with the most favored orientation being that in which the current flows normal to the (0001) plates of ice that make up the dendritic ice/water interface characteristics of sea ice. It is hypothesized that current flow in this direction reduces the thickness of the solute boundary layer as well as the salinity in the liquid at the interface. This lowered salinity allows crystals in the favored orientation to extend farther into the melt than neighboring crystals with less favored orientations. In addition the current tends to induce a continuous flux of supercooled seawater against the sides of the crystals that extend ahead of the interface.
    Type of Medium: Series available for loan
    Pages: v, 29 Seiten , Illustrationen
    Series Statement: CRREL Report 78-13
    Language: English
    Note: CONTENTS Abstract Preface Introduction Locale and techniques Observations Vertical variations in crystal orientation Regional variations in crystal orientation Summary of observations Causes Initial ice skim Earth’s magnetic field Currents Conclusions and consequences Literature cited
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  • 161
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/7
    In: CRREL Report, 78-7
    Description / Table of Contents: The theory of non-coaxial in-plane plastic deformation of soils that obey the Coulomb yield criterion is presented. The constitutive equations are derived by use of the geometry of the Mohr circle and the theory of characteristic lines. It is found that, for solving a boundary value problem, the non-coaxial angle must be given such values that enable us to accommodate the presupposed type of flow in the given domain satisfying the given boundary conditions. The non-coaxial angle is contained in the constitutive equations as a parameter. Therefore, the plastic material obeying the Coulomb yield criterion is a singular material whose constitutive equations are not constant with material but are variable with flow conditions.
    Type of Medium: Series available for loan
    Pages: iii, 28 Seiten , Illustrationen
    Series Statement: CRREL Report 78-7
    Language: English
    Note: CONTENTS Abstrac Preface Introduction Analysis of stress Geometry of the Mohr circle Stress characteristic directions Analysis of strain rate Constitutive equations Strain-rate characteristic directions Constitutive geometry Strain-rate tensor The dyadic expression Plastic work rate Coordinate transformation Example The stress solution Velocity equations in the a-characteristic curvilinear coordinates The constant speed solution Velocity equations in the constant density region Solution in the first constant-density subregion Solution in the second constant-density subregion Solution in the passive region Conclusion Literature cited
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  • 162
    Monograph available for loan
    Monograph available for loan
    Paris : Commission Internationale des Grand Barrages
    Associated volumes
    Call number: M 97.0270
    In: Bulletin / International Commission on Large Dams
    Type of Medium: Monograph available for loan
    Pages: 185 S.
    ISSN: 0534-8293
    Series Statement: Bulletin / International Commission on Large Dams 59
    Classification:
    Applied Geology
    Language: English
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  • 163
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-77/30
    In: CRREL Report, 77-30
    Description / Table of Contents: Abstract: Ageneral computer model to simulate municipal snow removal has been developed. Programs which aid in the routing of snowplows are a part of this package. Once vehicle routes are created, the simulation program can be used to assess situations varying both equipment and meteorological parameters. Time for each plow to complete its route is calculated. Considerations are made for the above variable parameters plus plowing windrow, route starting depth, overlapping truck routes and intersection delay time. The effects of storm length, snowfall rate and starting depth on total plowing time are examined in a test case.
    Type of Medium: Series available for loan
    Pages: ii, 7 Seiten , Illustrationen
    Series Statement: CRREL Report 77-30
    Language: English
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  • 164
    Call number: ZSP-403-304
    In: Jare Data Reports
    Type of Medium: Series available for loan
    Pages: 52 S. : überw. graph. Darst.
    Series Statement: Jare Data Reports 304 : Oceanography 31
    Language: English
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  • 165
    Monograph available for loan
    Monograph available for loan
    Paris : European Space Agency
    Associated volumes
    Call number: M 97.0230
    In: ESA PSS
    Type of Medium: Monograph available for loan
    Pages: vi, 33 S.
    Edition: Issue 2.
    Series Statement: ESA PSS 01-60
    Classification:
    A.1.1.
    Language: English
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  • 166
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/25
    In: CRREL Report, 78-25
    Description / Table of Contents: The objectives of this investigation were to describe channel characteristics and geographic settings of ice jam sites from aerial photographic interpretation, to indicate which characteristics may be important in causing ice jams, and to suggest additional uses of aerial photographs. Aerial photographs were taken of 19 sites with a Zeiss RMK 15/23 aerial camera on 17, 19, and 21 April 1976. Uncontrolled photomosaics of each site were assembled and major river characteristics were delineated on the photomosaics. Characteristics described include: manmade structures, falls, rapids, changes in channel depths, channel islands, mid-channel shoals or bars, river bed material, river sinuosity, meanders, floodplain width, riparian vegetation, and types of development on the floodplain. River channel widths were measured from the photographs along rivers where ground truth data were available for comparison. Lengths of channel riffles and pools were measured along the rivers where variations in river depths were evident on the photographs. Seventy-nine percent of the sites have some form of flow control structure which causes a pool with a backwater condition of low velocity. The low flow condition in the pool allows a solid ice cover to form which impedes ice movement and initiates ice jams. Aerial photographs provide a regional perspective for evaluating channel characteristics at an ice jam site and for analyzing the geographic setting at each site during ice-free conditions. Photographs taken after ice jams have formed are useful in monitoring ice jam formation, in analyzing ice characteristics, and in documenting ice jam breakup and movement.
    Type of Medium: Series available for loan
    Pages: iii, 60 Seiten , Illustrationen
    Series Statement: CRREL Report 78-25
    Language: English
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  • 167
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/26
    In: CRREL Report, 78-26
    Description / Table of Contents: Ice fog suppression experiments on the Fort Wainwright Power Plant cooling pond were conducted during the winters of 1974-76. Baseline information studies occupied a sizable portion of the available ice fog weather in 1974-75. Then hexadecanol was added to the pond and dramatically improved visibility by reducing fog generated from water vapor released by the pond at -14 C. Although this temperature was not low enough to create ice fog, the cold vapor fog created was equally as devastating to visibility in the vicinity of the pond. During the winter of 1975-76, suppression tests were continued using films of hexadecanol, mixes of hexadecanol and octadecanol, and ethylene glycol monobutyl ether (EGME). Suppression effectiveness at colder temperatures was stuided and limits to the techniques were probed. A reinforcing grid was constructed that prevented breakup of the film by wind and water currents. Lifetime tests indicated that EGME degrades much more slowly than either hexadecanol or the hexadecanol-octadecanol mix. The films were found to be very effective fog reducers at warmer temperatures but still allowed 20% to 40% of normal evaporation to occur. The vapor thus produced was sufficient to create some ice fog at lower temperatures, but this ice fog occurred less frequently and was more quickly dispersed than the thick fog that was present before application of the films.
    Type of Medium: Series available for loan
    Pages: iv, 27 Seiten , Illustrationen
    Series Statement: CRREL Report 78-26
    Language: English
    Note: CONTENTS Abstract Preface Introduction Ice fog from cooling ponds Evaporation Relative humidity and cold air Ice fog suppression Air movement Plastic films Rafts Injection wells Cooling towers Chemical films Reinforced film experiments Meteorological data collection Floating reinforcement grid Application of the hexadecanol film Hexadecanol, octadecanol mixes Ethylene glycol monobutyl ether Laboratory tests of suppression effectiveness Conclusions Literature cited Appendix A. Design for an automatic thin chemical film applicationsystem Appendix B. Meteorological data
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  • 168
    Call number: ZSP-201-78/12
    In: CRREL Report, 78-12
    Description / Table of Contents: Road test sections of membrane-enveloped silt and clay soils overlain with asphalt cement concrete were subjected to repetitive dynamic plate-bearing loadings to determine their strength variations during freeze-thaw cycles. The recoverable surface deformations in the load deflection bowl were continuously measured during the loading cycles and analyzed using the Chevron layered elastic computer program to obtain the in situ resilient deformation modulus of the various section layers at different stages of the freeze-thaw cycles. The resilient stiffness of the pavement system (the total load per unit of resilient load plate deflection) was also calculated for the various freeze-thaw conditions. The modulus values of the asphalt cement concrete varied inversely with its temperature by an order of magnetide (90,000 psi to 1,300,000 psi). The resilient stiffness of the pavement system varied in the same manner by nearly a factor of eight (228.4 kips/in. to 1740.2 kips/in.). Despite the wide strength variations of the sections during freeze-thaw cycles, membrane-enveloped fine-grained soils can be utilized instead of granular materials as base and subbase layers in flexible pavements in cold regions where moisture migration is a major concern. Moisture migration did not occur at saturation levels up to 75%, thus there was no strength loss during thawing.
    Type of Medium: Series available for loan
    Pages: v, 24 Seiten , Illustrationen
    Series Statement: CRREL Report 78-12
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors: U.S.customary to metric units of measurement Introduction Freeze-thaw system Construction materials Controlled environment test section Outdoor sections Temperature monitoring instrumentation Repetitive plate bearing test apparatus Test results and analyses Conclusions Literature cited
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  • 169
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/3
    In: CRREL Report, 79-3
    Type of Medium: Series available for loan
    Pages: ii, 7 Seiten , Illustrationen
    Series Statement: CRREL Report 79-3
    Language: English
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  • 170
    Monograph available for loan
    Monograph available for loan
    Washington : National Academy Press
    Call number: M 97.0281
    Type of Medium: Monograph available for loan
    Pages: xv, 276 S.
    ISBN: 0309035325
    Classification:
    B.6.
    Language: English
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  • 171
    facet.materialart.
    Unknown
    Leningrad : Vsesoj. im. Lenina Naučno-Issl. Geol. Institut im A. P. Karpinskogo
    Call number: AWI K-96-0595(1-16) ; AWI K-96-0522(1-16)
    Pages: 1 Kt. auf 16 Bl. : mehrfarb. ; Gesamtgr. 337 x 206 cm
    Language: Russian , English
    Note: In kyrill. Schr. - Legende russ. u. engl.
    Location: 16
    Location: 16
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  • 172
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/27
    In: CRREL Report, 78-27
    Description / Table of Contents: Uniaxial compression and tension tests were conducted on polycrystalline snow-ice to determine the effect of temperature on its strength. Test temperatures ranged from -O.1C to -54C. Two machine speeds, 0.847 mm/s and84.7 mm/s were used for the constant displacement rate tests. The compressive strength at -54C was about oneorder of magnitude higher than at -0.1C. The tensile strength at -18C was about 20% higher than at 0.1C. The initial tangent and 50% strength moduli are given for the compression tests, while the secant modulus to failure is given for the tension tests.The mode of fracture is discussed and the test results are compared with data from other investigations.
    Type of Medium: Series available for loan
    Pages: iii, 22 Seiten , Illustrationen
    Series Statement: CRREL Report 78-27
    Language: English
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  • 173
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/5
    In: CRREL Report, 78-5
    Description / Table of Contents: The viscoelastic deflection of an infinite floating ice plate subjected to a circular load was solved, assuming the Maxwell-Voigt type four-element model. An effective method of numerical integration of the solution integrals was developed, of which each integrand contains a product of Bessel functions extending to infinity. The theoretical curve was fitted to the field data, but the material constants thus found varied with time and location.
    Type of Medium: Series available for loan
    Pages: iii, 32 Seiten , Illustrationen
    Series Statement: CRREL Report 78-5
    Language: English
    Note: CONTENTS Abstract Preface Introduction The problem The solution Method of numerical integration Ramp/steady loading Curve fitting to time lapse deflections Asymptotic deflection Deflection profiles Acknowledgement Literature cited Appendix I. Analytical background Appendix II. Computer programs, ramp time profiles and steady time profiles
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  • 174
    Call number: ZSP-201-78/9
    In: CRREL Report, 78-9
    Description / Table of Contents: Large, simply supported beams of temperate lake ice were found, generally, to yield significantly higher flexural strengths than the same beams tested in the cantilever mode. Data support the view that a significant stress concentration may exist at the fixed corners of the cantilever beams. Maximum effects are experienced with beams of cold, brittle ice substantially free of structural imperfections; for this kind of ice the strength difference factor, here attributed to the effect of stress concentrations, may exceed 2.0; that is, simply supported beams test a factor of 2 or more stronger than the same beams tested in the cantilever mode. In ice that has undergone extensive thermal degradation, the stress concentration effect may be eliminated entirely. Simply supported beams generally yield higher strengths when the top surfaces are placed in tension. This behavior is attributed to differences in ice type; the fine-grained, crack-free top layer of snow-ice which constituted up to 50% of the ice cover in the current series of tests usually reacted more strongly in tension than the coarse-grained crack-prone bottom lake ice.
    Type of Medium: Series available for loan
    Pages: iv, 14 Seiten , Illustrationen
    Series Statement: CRREL Report 78-9
    Language: English
    Note: CONTENTS Abstract Preface Introduction Test sites and ice cover properties Beam testing Results Discussion Conclusions Literature cited
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  • 175
    Monograph non-lending collection
    Monograph non-lending collection
    [Tokyo] : Japan Aerospace Exploration Agency
    Associated volumes
    Call number: ZSP-405a-08-0004
    In: JAXA Research and Development Report
    Type of Medium: Monograph non-lending collection
    Pages: 29 S.
    Series Statement: JAXA Research and development report RR-06-015E
    Language: English
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  • 176
    Monograph available for loan
    Monograph available for loan
    Chichester : Wiley
    Call number: AWI A6-08-0012
    Type of Medium: Monograph available for loan
    Pages: X, 280 Seiten , Illustrationen , 1 CD-ROM
    ISBN: 0470861738
    Language: English
    Note: Contents Preface Part I Anatomy of a cyclone 1 Anatomy of a cyclone 1.1 A 'typical' extra-tropical cyclone 1.2 Describing the atmosphere 1.3 Air masses and fronts 1.4 The structure of a typical extra-tropical cyclone Review questions 2 Mathematical methods in fluid dynamics 2.1 Scalars and vectors 2.2 The algebra of vectors 2.3 Scalar and vector fields 2.4 Coordinate systems on the Earth 2.5 Gradients of vectors 2.6 Line and surface integrals 2.7 Eulerian and Lagrangian frames of reference 2.8 Advection Review questions 3 Properties of fluids 3.1 Solids, liquids, and gases 3.2 Thermodynamic properties of air 3.3 Composition of the atmosphere 3.4 Static stability 3.5 The continuum hypothesis 3.6 Practical assumptions 3.7 Continuity equation Review questions 4 Fundamental forces 4.1 Newton's second law: F=ma 4.2 Body, surface, and line forces 4.3 Forces in an inertial reference frame 4.4 Forces in a rotating reference frame 4.5 The Navier-Stokes equations Review questions 5 Scale analysis 5.1 Dimensional homogeneity 5.2 Scales 5.3 Non-dimensional parameters 5.4 Scale analysis 5.5 The geostrophic approximation Review questions 6 Simple steady motion 6.1 Natural coordinate system 6.2 Balanced flow 6.3 The Boussinesq approximation 6.4 The thermal wind 6.5 Departures from balance Review questions 7 Circulation and vorticity 7.1 Circulation 7.2 Vorticity 7.3 Conservation of potential vorticity 7.4 An introduction to the vorticity equation Review questions 8 Simple wave motions 8.1 Properties of waves 8.2 Perturbation analysis 8.3 Planetary waves Review questions 9 Extra-tropical weather systems 9.1 Fronts 9.2 Frontal cyclones 9.3 Baroclinic instability Review questions Part II Atmospheric phenomena 10 Boundary layers 10.1 Turbulence 10.2 Reynolds decomposition 10.3 Generation of turbulence 10.4 Closure assumptions Review questions 11 Clouds and severe weather 11.1 Moist processes in the atmosphere 11.2 Air mass thunderstorms 11.3 Multi-cell thunderstorms 11.4 Supercell thunderstorms and tornadoes 11.5 Mesoscale convective systems Review questions 12 Tropical weather 12.1 Scales of motion 12.2 Atmospheric oscillations 12.3 Tropical cyclones Review questions 13 Mountain weather 13.1 Internal gravity waves 13.2 Flow over mountains 13.3 Downslope windstorms Review questions 14 Polar weather 14.1 Katabatic winds 14.2 Barrier winds 14.3 Polar lows Review questions 15 Epilogue: the general circulation 15.1 Fueled by the Sun 15.2 Radiative-convective equilibrium 15.3 The zonal mean circulation 15.4 The angular momentum budget 15.5 The energy cycle Appendix A - symbols Appendix Β - constants and units Bibliography Index
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  • 177
    Monograph available for loan
    Monograph available for loan
    Chichester : Wiley
    Call number: AWI G3-08-0013 ; 13/M 13.0053 ; AWI G3-22-5374
    Description / Table of Contents: The periglacial environment, Third Edition, provides an authoritative overview of the world's cold, non-glacial environments. Emphasis is placed upon the North American and Eurasian polar lowlands. Examples are also drawn from Antarctica, the Qinghai-Xizang (Tibet) Plateau, and the northern mid-latitudes. [...] The Third Edition continues to be a personal interpretation of the frost-induced conditions, geomorphic processes, and landforms that typify periglacial environments. The text is divided into four parts. Part One discusses the periglacial concept and its interactions with geomorphology, geocryology and Quaternary science. It also outlines the range and variability of periglacial climates and the degree to which landscapes are in geomorphic equilibrium with prevailing periglacial conditions. Part Two describes present-day terrain that is either underlain by permafrost or experiencing intense frost action. The roles played by cryogenic weathering, ground ice, mass wasting, running water, wind action, snow and ice, and coastal processes are systematically analysed. Part Three summarizes evidence for the existence of periglacial conditions during the cold periods of the Pleistocene. Special reference is made to the mid-latitudes of Europe and North America. Part Four illustrates the geotechnical problems associated with human activity and resource development in periglacial environments, and discusses the potential impact of global climate change in the northern high latitudes.
    Type of Medium: Monograph available for loan
    Pages: XVIII, 458 Seiten , Illustrationen
    Edition: Third edition
    ISBN: 9780470865897
    Classification:
    Geography and Geomorphology
    Language: English
    Note: Contents: Preface to First Edition. - Preface to Second Edition. - Preface to Third Edition. - Acknowledgments. - Part I The Periglacial Domain. - 1 Introduction. - 1.1 The Periglacial Concept. - 1.2 Disciplinary Considerations. - 1.2.1 The Growth of Geocryology. - 1.2.2 The Changing Nature of Quaternary Science. - 1.2.3 Modern Periglacial Geomorphology. - 1.3 The Growth of Periglacial Knowledge. - 1.4 The Periglacial Domain. - 1.5 The Scope of Periglacial Geomorphology. - 1.5.1 Permafrost-Related Processes and Landforms. - 1.5.2 Azonal Processes and Landforms. - 1.5.3 Paleo-Environmental Reconstruction. - 1.5.4 Applied Periglacial Geomorphology. - Advanced Reading. - Discussion Topics. - 2 Periglacial Landscapes?. - 2.1 Introduction. - 2.2 Proglacial, Paraglacial or Periglacial?. - 2.3 Unglaciated Periglacial Terrain. - 2.3.1 Beaufort Plain, Northwest Banks Island, Arctic Canada. - 2.3.2 Barn Mountains, Northern Interior Yukon Territory, Canada. - 2.4 Relict Periglacial Landscapes. - 2.4.1 Chalk Uplands, Southern England and Northern France. - 2.4.2 Pine Barrens, Southern New Jersey, Eastern USA. - 2.5 Conclusions. - Advanced Reading. - Discussion Topics. - 3 Periglacial Climates. - 3.1 Boundary Conditions. - 3.2 Periglacial Climates. - 3.2.1 High Arctic Climates. - 3.2.2 Continental Climates. - 3.2.3 Qinghai-Xizang (Tibet) Plateau. - 3.2.4 Alpine Climates. - 3.2.5 Climates of Low Annual Temperature Range. - 3.2.6 Antarctica: A Special Case. - 3.3 Ground Climates. - 3.3.1 The n-Factor. - 3.3.2 The Thermal Offset. - 3.4 Periglacial Climates and the Cryosphere. - Advanced Reading. - Discussion Topics. - Part II Present-Day Periglacial Environments. - 4 Cold-Climate Weathering. - 4.1 Introduction. - 4.2 Ground Freezing. - 4.2.1 The Freezing Process. - 4.2.2 Ice Segregation. - 4.2.3 The Frozen Fringe. - 4.2.4 Frost Heave. - 4.3 Freezing and Thawing. - 4.4 The Ground-Temperature Regime. - 4.4.1 The Seasonal Regime. - 4.4.2 Short-Term Fluctuations. - 4.5 Rock (Frost?) Shattering. - 4.5.1 Frost Action and Ice Segregation. - 4.5.2 Frost Weathering Models. - 4.5.3 Insolation Weathering and Thermal Shock. - 4.5.4 Discussion and Perspective. - 4.6 Chemical Weathering. - 4.6.1 General. - 4.6.2 Solution and Karstification. - 4.6.3 Salt Weathering. - 4.7 Cryogenic Weathering. - 4.8 Cryobiological Weathering. - 4.9 Cryopedology. - 4.9.1 Cryosols. - 4.9.2 Soil Micromorphology. - Advanced Reading. - Discussion Topics. - 5 Permafrost. - 5.1 Introduction. - 5.1.1 Definition. - 5.1.2 Moisture and Ice within Permafrost. - 5.2 Thermal and Physical Properties. - 5.2.1 The Geothermal Regime. - 5.2.2 Physical Properties. - 5.2.3 Thermal Properties. - 5.3 How Does Permafrost Aggrade?. - 5.3.1 General Principles. - 5.3.2 The Illisarvik Drained-Lake Experiment. - 5.4 Distribution of Permafrost. - 5.4.1 Latitudinal Permafrost. - 5.4.2 Alpine (Mountain) Permafrost. - 5.4.3 Montane Permafrost of Central Asia and China. - 5.5 Relict Permafrost. - 5.5.1 Sub-Sea Permafrost. - 5.5.2 Relict (Terrestrial) Permafrost. - 5.6 Permafrost Hydrology. - 5.6.1 Aquifers. - 5.6.2 Hydrochemistry. - 5.6.3 Groundwater Icings. - 5.7 Permafrost and Terrain Conditions. - 5.7.1 Relief and Aspect. - 5.7.2 Rock Type. - 5.7.3 Vegetation. - 5.7.4 Snow Cover. - 5.7.5 Fire. - 5.7.6 Lakes and Surface Water Bodies. - 5.8 The Active Layer. - 5.8.1 The Transient Layer. - 5.8.2 The Stefan Equation. - 5.8.3 Active-Layer Thermal Regime. - Advanced Reading. - Discussion Topics. - 6 Surface Features of Permafrost. - 6.1 Introduction. - 6.2 Thermal-Contraction-Crack Polygons. - 6.2.1 Coefficients of Thermal Expansion and Contraction. - 6.2.2 Ice, Sand, and Soil Wedges. - 6.2.3 Development of the Polygon Net. - 6.2.4 Polygon Morphology. - 6.2.5 Controls Over Cracking. - 6.2.6 Climatic Significance. - 6.3 Organic Terrain. - 6.3.1 Palsas. - 6.3.2 Peat Plateaus. - 6.4 Rock Glaciers. - 6.4.1 Creeping Permafrost. - 6.4.2 Types and Distribution. - 6.4.3 Origin. - 6.5 Frost Mounds. - 6.5.1 Perennial-Frost Mounds. - 6.5.2 Hydraulic (Open) System Pingos. - 6.5.3 Hydrostatic (Closed) System Pingos. - 6.5.4 Other Perennial-Frost Mounds. - 6.5.5 Seasonal-Frost Mounds. - 6.5.6 Hydrolaccoliths and Other Frost-Induced Mounds. - 6.6 Active-Layer Phenomena. - 6.6.1 Bedrock Heave. - 6.6.2 Needle Ice. - 6.6.3 Cryoturbation and Frost Heave. - 6.6.4 Frost Sorting. - 6.6.5 Patterned Ground. - Advanced Reading. - Discussion Topics. - 7 Ground lce. - 7.1 Introduction. - 7.2 Classification. - 7.2.1 Pore Ice. - 7.2.2 Segregated Ice. - 7.2.3 Intrusive Ice. - 7.2.4 Vein Ice. - 7.2.5 Other Types of Ice. - 7.3 Ice Distribution. - 7.3.1 Amounts. - 7.3.2 Distribution with Depth. - 7.3.3 Ice in Bedrock. - 7.3.4 Ice in Unconsolidated Sediments. - 7.4 Cryostratigraphy and Cryolithology. - 7.4.1 Cryostructures, Cryotextures, and Cryofacies. - 7.4.2 Epigenetic and Syngenetic Cryostructures. - 7.4.3 Thaw Unconformities. - 7.4.4 Ice Crystallography. - 7.4.5 Ice Geochemistry. - 7.4.6 Cryostratigraphy and Past Environments. - 7.5 Ice Wedges. - 7.5.1 Epigenetic Wedges. - 7.5.2 Syngenetic Wedges. - 7.5.3 Anti-Syngenetic Wedges. - 7.6 Massive Ice and Massive-Icy Bodies. - 7.6.1 Nature and Extent. - 7.6.2 Intra-Sedimental Ice. - 7.6.3 Buried Glacier Ice. - 7.6.4 Other Mechanisms. - Advanced Reading. - Discussion Topics. - 8 Thermokarst. - 8.1 Introduction. - 8.2 Causes of Thermokarst. - 8.2.1 General. - 8.2.2 Specific. - 8.3 Thaw-Related Processes. - 8.3.1 Thermokarst Subsidence. - 8.3.2 Thermal Erosion. - 8.3.3 Other Processes. - 8.4 Thermokarst Sediments and Structures. - 8.4.1 Involuted Sediments. - 8.4.2 Retrogressive-Thaw-Slumps and Debris-Flow Deposits. - 8.4.3 Ice-Wedge Pseudomorphs and Composite-Wedge Casts. - 8.4.4 Ice, Silt, Sand, and Gravel Pseudomorphs. - 8.5 Ice-Wedge Thermokarst Relief. - 8.5.1 Low-Centered Polygons. - 8.5.2 High-Centered Polygons. - 8.5.3 Badland Thermokarst Relief. - 8.6 Thaw Lakes and Depressions. - 8.6.1 Morphology. - 8.6.2 Growth and Drainage. - 8.6.3 Oriented Thaw Lakes. - 8.7 Thermokarst-Affected Terrain. - 8.7.1 The Lowlands of Central and Northern Siberia. - 8.7.2 The Western North American Arctic. - 8.8 Human-Induced Thermokarst. - 8.8.1 Causes. - 8.8.2 Case Studies. - Advanced Reading. - Discussion Topics. - 9 Hillslope Processes and Slope Evolution. - 9.1 Introduction. - 9.2 Slope Morphology. - 9.2.1 The Free-Face Model. - 9.2.2 Rectilinear Debris-Mantled Slopes. - 9.2.3 Convexo-Concavo Debris-Mantled Slopes. - 9.2.4 Pediment-Like Slopes. - 9.2.5 Stepped Profiles. - 9.3 Mass Wasting. - 9.4 Slow Mass-Wasting Processes. - 9.4.1 Solifluction. - 9.4.2 Frost Creep. - 9.4.3 Gelifluction. - 9.4.4 Solifluction Deposits and Phenomena. - 9.5 Rapid Mass Wasting. - 9.5.1 Active-Layer-Detachment Slides. - 9.5.2 Debris Flows, Slushflows, and Avalanches. - 9.5.3 Rockfall. - 9.6 Slopewash. - 9.6.1 Snow-Bank Hydrology. - 9.6.2 Surface and Subsurface Wash. - 9.7 Frozen and Thawing Slopes. - 9.7.1 Permafrost Creep. - 9.7.2 Thermokarst and Thaw Consolidation. - 9.7.3 Stability of Thawing Slopes. - 9.8 Cold-Climate Slope Evolution. - 9.8.1 Cryoplanation. - 9.8.2 Slope Replacement and Richter Denudation Slopes. - 9.8.3 Rapidity of Profile Change. - 9.8.4 Summary. - Advanced Reading. - Discussion Topics. - 10 Azonal Processes and Landforms. - 10.1 Introduction. - 10.2 Fluvial Processes and Landforms. - 10.2.1 Major Rivers. - 10.2.2 Freeze-Up and Break-Up. - 10.2.3 Basin Hydrology. - 10.2.4 Sediment Flow, Surface Transport, and Denudation. - 10.2.5 Fluvio-Thermal Erosion. - 10.2.6 Channel Morphology. - 10.2.7 Valley Asymmetry. - 10.3 Eolian Processes and Sediments. - 10.3.1 Wind Abrasion. - 10.3.2 Wind Deflation. - 10.3.3 Niveo-Eolian Sediments. - 10.3.4 Loess-Like Silt. - 10.3.5 Sand Dunes and San
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  • 178
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/6
    In: CRREL Report, 79-6
    Description / Table of Contents: Nondestructive repetitive plate bearing (RPB) tests were conducted on various test sections in state highways in Maine during 13-15 April 1976. The RPB test consists of making resilient surface deflection measurements during repetitive loadings at various radii from the load plate. The pavement system stiffness was calculated and the resilient modulus values for the various pavement layers were determined with the Chevron computer program for a layered elastic system. A thawed analysis using nondimensional deflection curves for the various sections provided a guide to the susceptibility of the pavement systems to surface failure and pothole development. Some comparisons between stabilized and nonstabilized aggregate and soil were made with calculated stiffness values. The moduli of the various materials were also compared. The residual surface deflections during testing for several pavement systems indicated a linear logarithmic relationship with number of load applications. A relationship between the modulus of the asphalt cement concrete pavement and pavement temperature was developed for the limited temperature range during the testing.
    Type of Medium: Series available for loan
    Pages: v, 20 Seiten , Illustrationen
    Series Statement: CRREL Report 79-6
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors Introduction Descriptions of road test sections Test equipment and procedures. Field repetitive plate bearing tests Data analysis General Layered-elastic analysis of the pavement systems Statistical analysis. Flexural analysis Summary and conclusions Literature cited Appendix A: Resilient surface deflections for the test points
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  • 179
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/4
    In: CRREL Report, 79-4
    Description / Table of Contents: A computer model is described to compute the amount of ice accretion on an object under a variety of initial conditions. Numerical techniques are best applied to these problems because of time dependent effects governing the amount of ice collected and also the variety of initial conditions that can lead to ice accumulation. The helicopter rotor icing problem adds an additional complexity since the velocity along the rotor blade varies over a wide range strongly affecting the amounts of ice collected at different blade positions. The physics of ice accretion is reviewed and the accounting for time-dependence in the computer model is described. Some model results are presented and indicate the dependence of ice accretion on velocity, droplet sizes, cloud liquid water content, and temperature for a cylindrical object of constant size.
    Type of Medium: Series available for loan
    Pages: iii, 39 Seiten , Illustrationen
    Series Statement: CRREL Report 79-4
    Language: English
    Note: CONTENT Abstract Preface Introduction Ice accretion parameters Physics of ice accretion Interaction between water droplets and flow field Time dependence in droplet trajectories Thermodynamic processes at the surface of the object Time dependence in the thermodynamics Time dependence of lesser order Numerical ice accretion model Major subroutines Options for droplet size variations Option for the helicopter rotor case Results Conclusions and future studies Literature cited Appendix A: Computer program
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  • 180
    Call number: ZSP-201-79/1
    In: CRREL Report, 79-1
    Description / Table of Contents: Experiments were conducted to study the flow of water through columns of homogeneous, repacked snow. The gravity flow theory of water flow through snow was verified, although possibly there is some dependence of the relative permeability on the state of metamorphism of the snow. Also, at very large values of saturation there may be some additional flow in saturated channels.
    Type of Medium: Series available for loan
    Pages: iv, 13 Seiten , Illustrationen
    Series Statement: CRREL Report 79-1
    Language: English
    Note: CONTENTS Preface Symbols Introduction Test procedure Theory Evaluation of the experimental results Example evaluation Results and discussion Literature cited Appendix A. Measured and computed discharge
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  • 181
    Series available for loan
    Series available for loan
    Hannover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-79/2
    In: CRREL Report, 79-2
    Description / Table of Contents: The stress-density relaionships of snow-water mixtures were investigated and are shown as functions of water content, initial snow density, initial snow-water mixture density and rate of deformation. An increase in water content in snow at a particular density or a decrease in the rate of deformation (or strain rate) decreases the stress, but apparently not the specific energy required to reach a specific mixture density.
    Type of Medium: Series available for loan
    Pages: v, 26 Seiten , Illustrationen
    Series Statement: CRREL Report 79-2
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Description of study Sample preparation Test equipment and procedure Test sample characteristics Discussion of results Data presentation format Effect of water content and mixture density Effect of water content and initial snow density Effect of deformation rate Effect of water content and rate of deformation on specific energy Summary Literature cited Appendix A. Derivation of equations Appendix B. Load-deformation traces
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  • 182
    Monograph available for loan
    Monograph available for loan
    Bremerhaven : Alfred-Wegener-Institut
    Associated volumes
    Call number: ZSP-994(2006/2007)
    In: Zweijahresbericht / AWI, Alfred-Wegener-Institut für Polar- und Meeresforschung, 2006/2007
    Type of Medium: Monograph available for loan
    Pages: 344 Seiten , Illustrationen
    ISSN: 1618-3703
    Series Statement: Zweijahresbericht / AWI, Alfred-Wegener-Institut für Polar- und Meeresforschung 2006/2007
    Language: German , English
    Note: Inhalt = Content 1. Vorwort = Introduction 2. Ausgewählte Forschungsthemen = Selected research topics Rinnen im Meereis: Heizung für die Atmosphäre? = Leads in Sea Ice: Heating the Atmosphere? / Christof Lüpkes, Vladimir Gryanik, Anna Barbara Herold, Gerit Birnbaum, Ulrike Wacker, Jörg Hartmann Die polaren Ozeane vor dem Hintergrund der Klimaänderung – Ein Vergleich = The Polar Oceans in the context of climate change – commons and contrasts / Eberhard Fahrbach, Christian Haas und Ursula Schauer Wissenschaftliches Rechnen und Ozeanographie für das Krisenmanagement: Der Beitrag des Alfred-Wegener-Instituts zum Deutsch-Indonesischen Tsunami-Frühwarnsystem = Scientific computing and oceanography for hazard management: The contribution of the Alfred Wegener Institute to the German-Indonesian Tsunami Early Warning System / Jörn Behrens, Wolfgang Hiller, Jens Schröter Klimaarchiv Eis – Das European Project for Ice Coring in Antarctica (EPICA) = Climate archive in ice - the European Project for Ice Coring in Antarctica (EPICA) / Hubertus Fischer, Frank Wilhelms, Sepp Kipfstuhl, Hans Oerter, Hanno Meyer, Peter Köhler, Rainer Gersonde & Heinz Miller Schwarzschiefer vom Nordpol entschlüsseln Klimageschichte: Der Arktische Ozean war vor 45 Millionen Jahren so warm wie die Ostsee heute = Black shales near the North Pole decipher climate history: The Arctic Ocean at 45 Ma was as warm as the modern Baltic Sea / Ruediger Stein, Petra Weller, Bettina Boucsein und Jens Matthiessen Leben auf dem Mars? Methan-bildende Mikroorganismen aus sibirischen Permafrost-böden als Studienobjekte = Life on Mars? Methane-forming micro-organisms from Siberian permafrost soils as study objects / Dirk Wagner und Daria Morozova Seeelefanten helfen Südozeanmodellierern = Elephant Seals help validate Finite Element Ice-Ocean Model / Ralph Timmermann Neuigkeiten in der Krillforschung: Licht kontrolliert Lebensfunktionen des Krills = News in Krill research: Light controls life functions of krill / Mathias Teschke, Bettina Meyer, Carsten Pape, Susanne Spahic Wie wird man 400 Jahre alt? Altersvorsorge der Islandmuschel (Arctica islandica) = Living 400 years – what is the secret of the ocean quahog (Arctica islandica)? / Doris Abele, Eva Philipp, Julia Strahl, Thomas Brey Langzeitforschung auf Helgoland und Sylt: Ein Finger am Puls der Nordsee = Long-Term Ecological Research at Helgoland and Sylt: Keeping a Finger at the Pulse of the North Sea / Justus E.E. van Beusekom, Maarten Boersma, Karsten Reise and Karen H. Wiltshire 3. Forschung = Research MARCOPOLI 3.1 MARINE 3.2 COAST 3.3 POLAR 3.4 Neue Themen = Additional funding 4. Helmholtz-Nachwuchsgruppen = Helmholtz Young Investigator Groups 5. Entwicklungen in den Fachbereichen = Progresses in the Scientific Divisions 6. Neue Technologien = New technologies 7. Logistik und Forschungsplattformen = Logistics and research platforms 8. Nationale und internationale Zusammenarbeit = National and international cooperation 9. Mariner Umweltschutz = Marine environmental protection 10. Wissenschaftliches Rechenzentrum = Scientific data processing centre 11. Bibliothek = Library 12. Technologietransfer = Technology transfer 13. Presse- und Öffentlichkeitsarbeit = Public relations department 14. Schulprojekt = School project 15. Personeller Aufbau und Haushaltsentwicklung = Personnel structure and budget trends 16. Veröffentlichungen, Patente = Publications, patents Anhang = Annex , Text in deutscher und englischer Sprache
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  • 183
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/18
    In: CRREL Report, 78-18
    Description / Table of Contents: The primary objective of this project was to demonstrate the utility of remote sensing techniques as an operational tool in the acquisition of data required by the U.S. Army Corps of Engineers, Seattle District, in the Grays Harbor dredging effects project, and related projects. Aerial imagery was used to map surface circulation and suspended sediment patterns near the hopper dredge pump site at the harbor entrance and near pulpmill outfalls in Aberdeen, and to map the areal distribution and extent of intertidal habitats. The surface circulation maps prepared from the aerial photographs and thermal imagery compared favorably with the large-scale circulation patterns observed in the Grays Harbor hydraulic model at the U.S. Army Engineer Waterways Experiment Station. Of the imagery provided by NASA, the thermal imagery was more useful than the color or color infrared (CIR) photographs for mapping circula­tion, while the CIR photographs were more useful than the thermal imagery or the color photographs for mapping intertidal habitats. Current velocities estimated from dye dispersion patterns and drifting dye drogues were comparable at some locations to velocities measured by in situ current meters and in the hydraulic model. Based on a cursory evaluation of LANDSAT-1 imagery acquired in January, February, and October 1973, it had limited utility in providing data on surface circulation patterns in Grays Harbor. The areal distribution and extent of nine wetland vegetation types, dune vegetation, and three types of eelgrass were mapped using primarily aerial C IR photographs and ground sur­veys. Color photographs were also used for areas not covered by the C IR photographs. Wetland vegetation types mapped were: low silty marsh, low sandy marsh, sedge marsh, high immature marsh, high mature marsh, salt marsh, diked pasture, freshwater marsh, and wooded swamp. Undiked salt marsh (first five types) covered 5540 acres (22.3 km2) in Grays Harbor.
    Type of Medium: Series available for loan
    Pages: vi, 85 Seiten , Illustrationen
    Series Statement: CRREL Report 78-18
    Language: English
    Note: CONTENTS Abstract Preface Introduction Site description Background and objectives Project history Approach General Aircraft imagery and sensor data LANDSAT imagery Ground truth data Results and discussion Remote sensing techniques Conventional techniques Comparison of results Conclusions Advantages and disadvantages Applications Recommendations Literature cited
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  • 184
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/10
    In: CRREL Report, 78-10
    Description / Table of Contents: The compressibility of wet snow is described in terms of pressure melting and nonlinear viscous deformation at grain contacts. The results of experiments with different salinities and liquid water contents are compared with computed densities. The decreasing compressibility of wet snow with increasing salinity and decreasing liquid content is quantified and explained. Simultaneous particle growth and the doubly charged layer at phase boundaries are included in the model. The results show that the density of wet snow increases approximately as a power of time but is highly dependent on the stress, initial particle size, liquid water content, and ionic impurity content of the snow.
    Type of Medium: Series available for loan
    Pages: vi, 23 Seiten , Illustrationen
    Series Statement: CRREL Report 78-10
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Experimental procedure Grain growth Stressed particle contacts Fluid pressure Packing geometry Temperature distribution and heat flow Fluid and impurity flows Results The liquid film Conclusions Literature cited
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  • 185
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/8
    In: CRREL Report, 78-8
    Description / Table of Contents: The interaction of a 5.1-GHz transverse electric surface wave with a dielectric slab is experimentally investigated. The wave is initially supported by a dielectric substrate resting upon a metallic ground-plane. A slab, made of the same dielectric material as the substrate and variable in height, is then placed upon the waveguide. The results for a small slab sitting on the substrate showed that the discontinuity was a very inefficient launcher of reflected surface waves. Investigations of these reflections with a trough waveguide showed that, for values of slab height comparable to the exponential decay height of the surface wave, the reflections remain very small. However, as the slab height is increased beyond the decay height, the reflected amplitude approaches the theoretical value for a plane wave reflected from the interface between air and the same dielectric. The results are applicable to surface wave methods of microwave deicing of wings and helicopter rotors.
    Type of Medium: Series available for loan
    Pages: v, 16 Seiten , Illustrationen
    Series Statement: CRREL Report 78-8
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Background Objective and procedure Theory of plane surface waves Waveguide design and characteristics Physical apparatus Frequency characteristics Spatial distribution of Ey above the guide Guide wave length Surface wave interaction with a slab discontinuity Experiments with a trough Discussion and conclusions Literature cited
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  • 186
    Monograph available for loan
    Monograph available for loan
    Paris : Commission Internationale des Grand Barrages
    Associated volumes
    Call number: M 97.0271
    In: Bulletin / International Commission on Large Dams
    Type of Medium: Monograph available for loan
    Pages: 83 S.
    ISSN: 0534-8293
    Series Statement: Bulletin / International Commission on Large Dams 61
    Classification:
    Applied Geology
    Language: English
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  • 187
    Monograph available for loan
    Monograph available for loan
    Englewood Cliffs, NJ : Prentice Hall
    Call number: M 97.0284
    Type of Medium: Monograph available for loan
    Pages: XX, 492 S. + 1 Diskette (5,25")
    ISBN: 0132141493
    Series Statement: Prentice-Hall signal processing series
    Classification:
    C.2.9.
    Language: English
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  • 188
    Monograph available for loan
    Monograph available for loan
    Madrid : Instituto Tecnológico Geominero de España ; Leiden : Nationaal Natuurhistorisch Museum
    Associated volumes
    Call number: 9/M 97.0173/2
    In: The carboniferous of the world
    Type of Medium: Monograph available for loan
    Pages: 447 S.
    Classification:
    Historical Geology
    Language: English
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  • 189
    Monograph available for loan
    Monograph available for loan
    Madrid : Instituto Tecnológico Geominero de España ; Leiden : Nationaal Natuurhistorisch Museum
    Associated volumes
    Call number: 9/M 97.0173/1
    In: The carboniferous of the world
    Type of Medium: Monograph available for loan
    Pages: 242 S.
    Classification:
    Historical Geology
    Language: English
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  • 190
    Monograph available for loan
    Monograph available for loan
    New York [u.a.] : Springer
    Associated volumes
    Call number: M 97.0251 ; M 93.0038/2
    In: Advances in physical geochemistry
    Type of Medium: Monograph available for loan
    Pages: 353 S.
    ISBN: 0387906444
    Series Statement: Advances in physical geochemistry 2
    Classification:
    Geochemistry
    Language: English
    Location: Upper compact magazine
    Location: Upper compact magazine
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  • 191
    Monograph available for loan
    Monograph available for loan
    Potsdam : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Call number: AWI G3-08-0009
    Type of Medium: Monograph available for loan
    Pages: VIII, 108 S. : Ill., graph. Darst.
    Classification:
    Meteorology and Climatology
    Language: English
    Note: Bremen, Univ., Diss., 2007
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  • 192
    Monograph available for loan
    Monograph available for loan
    Cambridge [u.a.] : Cambridge University Press
    Call number: AWI A5-08-0018
    Description / Table of Contents: Mesoscale weather systems are responsible for numerous natural disasters, such as damaging winds, blizzards, and flash flooding. A fundamental understanding of the underlying dynamics involved in these weather systems is essential in forecasting their occurrence. This book provides a systematic approach to this subject, and covers a more complete spectrum of mesoscale dynamics than other texts. The opening chapters introduce the basic equations governing mesoscale weather systems and their approximations. The subsequent chapters cover four major areas of mesoscale dynamics: wave dynamics, moist convection, front dynamics, and mesoscale modeling. Wave dynamics covers wave generation and maintenance, orographically forced flow, and thermally forced flow. The moist convection part covers mesoscale instabilities, isolated storms, mesoscale convective systems, orographic precipitation, and introduces tropical cyclone dynamics. The dynamics of synoptic-scale fronts, mesoscale fronts, and jet streaks are discussed in the front dynamics part. The last part of the book introduces basic numerical modeling techniques, parameterizations of major physical processes, and the foundation for mesoscale numerical weather prediction. Mesoscale Dynamics is an ideal reference on this topic for researchers in meteorology and atmospheric science. This book could also serve as a textbook for graduate students, and it contains over 100 problems, with password-protected solutions. Modeling projects, providing hands-on practice for building simple models of stratified fluid flow from a one-dimensional advection equation, are also described.
    Type of Medium: Monograph available for loan
    Pages: XIII, 630 S. : Ill., graph. Darst., Kt.
    Edition: 1. publ.
    ISBN: 9780521808750
    Language: English
    Note: Contents: Preface. - 1 Overview. - 1.1 Introduction. - 1.2 Definitions of atmospheric scales. - 1.3 Energy generation and scale interactions. - 1.4 Predictability. - References. - 2 Governing equations for mesoscale motions. - 2.1 Introduction. - 2.2 Derivation of the governing equations. - 2.3 Approximations to the governing equations. - References. - Problems. - 3 Basic wave dynamics. - 3.1 Introduction. - 3.2 Basic wave properties. - 3.3 Soundwaves. - 3.4 Shallow water waves. - 3.5 Pure gravity waves. - 3.6 Inertia-gravity waves. - 3.7 Wave reflection levels. - 3.8 Critical levels. - Appendix 3.1. - References. - Problems. - 4 Mesoscale wave generation and maintenance. - 4.1 Introduction. - 4.2 Wave generation mechanisms. - 4.2.1 Density impulses and moist convection. - 4.2.2 Mesoscale instabilities. - 4.2.3 Geostrophic adjustment. - 4.2.4 Nonlinear interactions. - 4.3 Wave maintenance mechanisms. - 4.3.1 Linear wave ducting mechanism. - 4.3.2 Solitary wave mechanism. - 4.3.3 Wave-CISK mechanism. - 4.4 Energy propagation and momentum flux. - References. - Problems. - 5 Orographically forced flows. - 5.1 Flows over two-dimensional sinusoidal mountains. - 5.2 Flows over two-dimensional isolated mountains. - 5.2.1 Uniform basic flow. - 5.2.2 Basic flow with variable Scorer parameter. - 5.2.3 Trapped lee waves. - 5.3 Nonlinear flows over two-dimensional mountains. - 5.3.1 Nonlinear flow regimes. - 5.3.2 Generation of severe downslope winds. - 5.4 Flows over three-dimensional mountains. - 5.4.1 Linear theory. - 5.4.2 Generation of lee vortices. - 5.5 Flows over larger mesoscale mountains. - 5.5.1 Rotational effects. - 5.5.2 Lee cyclogenesis. - 5.5.3 Orographic influence on cyclone track. - 5.6 Other orographic effects. - 5.6.1 Effects on frontal passage. - 5.6.2 Coastally trapped disturbances. - 5.6.3 Cold-air damming. - 5.6.4 Gap flow. - Appendix 5.1. - References. - Problems. - 6 Thermally forced flows. - 6.1 Two-dimensional flows. - 6.1.1 Steady flows over a sinusoidal heat source. - 6.1.2 Steady flows over an isolated heat source. - 6.2 Transient flows. - 6.2.1 Flow responses to pulse heating. - 6.2.2 Flow responses to steady heating. - 6.3 Applications to mesoscale circulations. - 6.3.1 Density current formation and propagation. - 6.3.2 Heat island circulations. - 6.3.3 Moist convection. - 6.3.4 Gravity wave generation and propagation. - 6.4 Effects of shear, three dimensionality, and rotation. - 6.4.1 Two-dimensional shear flows. - 6.4.2 Three-dimensional nonrotating flows. - 6.4.3 Three-dimensional rotating flows. - 6.5 Dynamics of sea and land breezes. - 6.5.1 Linear theories. - 6.5.2 Nonlinear numerical studies. - 6.6 Dynamics of mountain-plains solenoidal circulations. - Appendix 6.1. - References. - Problems. - 7 Mesoscale instabilities. - 7.1 Wave energy transfer through instabilities. - 7.2 Integral theorems of stratified flow. - 7.2.1 Governing equations. - 7.2.2 Miles' theorem. - 7.2.3 Howard's semicircle theorem. - 7.3 Static, conditional, and potential instabilities. - 7.3.1 Static instability. - 7.3.2 Conditional instability. - 7.3.3 Potential instability. - 7.4 Kelvin-Helmholtz instability. - 7.5 Inertial instability. - 7.6 Symmetric instability. - 7.6.1 Dry symmetric instability. - 7.6.2 Moist symmetric instability. - 7.7 Baroclinic instability. - References. - Problems. - 8 Isolated convective storms. - 8.1 Dynamics of single-cell storms and downbursts. - 8.2 Dynamics of multicell storms. - 8.3 Effects of shear and buoyancy. - 8.3.1 Effects of shear on cold outflow. - 8.3.2 Effects of buoyancy. - 8.4 Dynamics of supercell storms. - 8.4.1 General characteristics. - 8.4.2 Effects of unidirectional shear. - 8.4.3 Storm splitting. - 8.4.4 Storm rotation and propagation. - 8.4.5 Effects of directional shear. - 8.5 Tornado dynamics. - 8.5.1 Supercell tornadogenesis. - 8.5.2 Nonsupercell tornadogenesis. - 8.5.3 Tornado vortex dynamics. - References. - Problems. - 9 Mesoscale convective systems. - 9.1 Squall lines and rainbands. - 9.1.1 Squall line classifications. - 9.1.2 Formation mechanisms. - 9.1.3 Maintenance mechanisms. - 9.1.4 Squall line movement. - 9.1.5 Rainbands. - 9.2 Mesoscale convective complexes. - 9.2.1 General characteristics. - 9.2.2 Formation and development mechanisms. - 9.3 Tropical cyclones. - 9.3.1 General characteristics. - 9.3.2 Tropical cyclogenesis. - 9.3.3 Intensity and mesoscale structure. - 9.3.4 Tropical cyclone movement. - References. - Problems. - 10 Dynamics of fronts and jet streaks. - 10.1 Kinematics of frontogenesis. - 10.2 Dynamics of two-dimensional frontogenesis. - 10.2.1 Geostrophic momentum approximation. - 10.2.2 Frontogenesis and cross-frontal circulations. - 10.3 Frontogenesis and baroclinic waves. - 10.4 Moist and frictional effects on frontogenesis. - 10.5 Other types of fronts. - 10.5.1 Upper-level frontogenesis. - 10.5.2 Drylines. - 10.6 Jet streak dynamics. - 10.6.1 Upper-level jet streaks. - 10.6.2 Low-level jets. - References. - Problems. - 11 Dynamics of orographic precipitation. - 11.1 Orographic influence on climatological distribution of precipitation. - 11.2 Orographic modification of preexisting disturbances. - 11.2.1 Passage of troughs. - 11.2.2 Passage of midlatitude cyclones and fronts. - 11.2.3 Passage of tropical cyclones. - 11.2.4 Common ingredients of orographic precipitation. - 11.3 Formation and enhancement mechanisms. - 11.3.1 Stable ascent mechanism. - 11.3.2 Release of moist instabilities. - 11.3.3 Effects of mountain geometry. - 11.3.4 Combined thermal and orographic forcing. - 11.3.5 Seeder-feeder mechanism. - 11.3.6 Dynamical-microphysical interaction mechanism. - 11.4 Control parameters and moist flow regimes. - 11.4.1 Control parameters. - 11.4.2 Moist flow regimes. - References. - 12 Basic numerical methods. - 12.1 Introduction. - 12.2 Finite difference approximations of derivatives. - 12.3 Finite difference approximations of the advection equation. - 12.3.1 Two-time-level schemes. - 12.3.2 Three-time-level schemes. - 12.4 Implicit schemes. - 12.5 Semi-Lagrangian methods. - Appendix 12.1. - References. - Problems. - Modeling projects. - 13 Numerical modeling of geophysical fluid systems. - 13.1 Grid systems and vertical coordinates. - 13.1.1 Grid systems. - 13.1.2 Vertical coordinates. - 13.2 Boundary conditions. - 13.2.1 Lateral boundary conditions. - 13.2.2 Upper boundary conditions. - 13.2.3 Lower boundary conditions. - 13.3 Initial conditions and data assimilation. - 13.4 Nonlinear aliasing and instability. - 13.5 Modeling a stratified fluid system. - 13.6 Predictability and ensemble forecasting. - References. - Problems. - Modeling project. - 14 Parameterizations of physical processes. - 14.1 Reynolds averaging. - 14.2 Parameterization of planetary boundary layer processes. - 14.2.1 Parameterization of the surface layer. - 14.2.2 Parameterization of the PBL. - 14.3 Parameterization of moist processes. - 14.3.1 Parameterization of microphysical processes. - 14.3.2 Cumulus parameterization. - 14.4 Parameterizations of radiative transfer processes. - 14.4.1 Introduction. - 14.4.2 Longwave radiation. - 14.4.3 Shortwave radiation. - References. - Problems. - Appendices. - A. List of symbols. - B. Nomenclature. - Index.
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  • 193
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/22
    In: CRREL Report, 78-22
    Description / Table of Contents: Special environmental factors that influence the design, laying and maintenance of undersea pipelines and cables in polar waters are described. Various approaches to the protection of submarine pipes and cables are considered, and prime emphasis is given to burial techniques for shallow water. A wide range of methods for trenching and burying are discussed, and technical data are given.
    Type of Medium: Series available for loan
    Pages: v, 36 Seiten , Illustrationen
    Series Statement: CRREL Report 78-22
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors Introduction Types of pipelines and cables Potential hazards to pipelines and cables Areas of concern Waterdepth Sea ice Icebergs and ice islands Submarine permafrost Ice gouging Seabed erosion by water jets Protection methods Protection of unburied pipes and cables Protection by burial Backhoe digging Wireline equipment Plowing and ripping from the surface Plowing and ripping by self-propelled seabed vehicles Bucket ladder dredges Suction dredging Conventional cutterhead dredges Low pressure water jetting Bottom-traveling cutterhead dredges Explosive methods Novel methods Disc saws, wheel ditchers and milling drums Ladder trenchers and chain saws Repetitive impulse devices High pressure water jets Flame jets and plasma torches Electrical discharge and electromagnetic radiation Chemical methods Conclusions Literature cited
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  • 194
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/16
    In: CRREL Report, 78-16
    Description / Table of Contents: A model investigation of drifting snow conditions was conducted in a hydraulic flume using a sand-water analog. Model results were evaluated to define modeling parameters that would allow quantitative correlation between measured prototype drift conditions and the model. The modeled structure was the standard plan snow fence designed by the Wyoming Highway Department and installed along Interstate Highway 80 in 1971. The performance of this system was documented by the Rocky Mountain Forest and Range Experiment Station of the U.S. Forest Service. Models of the fence were constructed for three heights and two geometric scales. Geometric scaling was based on terrain roughness and boundary layer thickness considerations, while velocity scaling was based on particle fall velocity and threshold of motion characteristics. Simulation of the atmospheric boundary layer was found to be of primary importance. Velocity scaling analysis suggested the use of a 'significant wind' concept based on a combination of velocity magnitude and frequency. Similarity of precipitation rate was not essential, and could be altered within limits to adjust the time scale. The response of the model to the shape of model elements was significant. Although the model is distorted and inexact similarity is achieved, it appears useful on a practical basis.
    Type of Medium: Series available for loan
    Pages: vi, 26 Seiten , Illustrationen
    Series Statement: CRREL Report 78-16
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Background Experimental design Similitude considerations The model Model operation Results Velocity Fence height Porosity Model correlation Summary and conclusions Recommeqdations for future work Literature cited Appendix A
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  • 195
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/15
    In: CRREL Report, 78-15
    Description / Table of Contents: This report first discusses the general approach for calculating the horizontal forces an ice cover exerts on a structure. Ice force determination consists of two parts: (1) the analysis of the in-plane forces assuming that the ice cover remains intact and (2) the use of a failure criterion, since an ice force cannot be larger than the force capable of breaking up the ice cover. For an estimate of the largest ice force, an elastic plate analysis and a failure criterion are often sufficient. A review of the literature revealed that, in the majority of the analyses, it is assumed that the failure load is directly related to a 'crushing strength' of the ice cover. However, observations in the field and tests in the laboratory show that in some instances the ice cover fails by buckling. This report reviews the ice force analyses based on the buckling failure mechanism and points out their shortcomings. The report then presents a new method of analysis which is based on the buckling mechanism
    Type of Medium: Series available for loan
    Pages: iv, 13 Seiten , Illustrationen
    Series Statement: CRREL Report 78-15
    Language: English
    Note: CONTENTS Abstract Preface Introduction and statement of problem Review of relevant analyses and tests Determination of the largest ice force on an isolated structure Preliminary remarks The buckling analysis of a floating wedge Proposed method to determine Literature cited
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  • 196
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/20
    In: CRREL Report, 78-20
    Description / Table of Contents: Abstract: Measurements of the concentrations of Aitken nuclei in maritime air were made near Barrow, Alaska, in June 1975 with a modified Nolan-Pollack small-particle detector. The concentrations varied from 50 to 300 particles cm^-3 depending upon meteorological conditions. The mean Aitken nuclei count was 100 particles cm^-3 for diameters greater than 2 x 10^-3 μm. Transmission electron micrographs of aerosols in maritime air near Barrow were taken. The size range was measured to be 0.01 to 2.5 μm in diameter with the most frequently observed diameter being 0.04 μm. The volume of the maritime air and the collection efficiency of aerosol particles on filmed grids for electron microscopy were measured. The aerosol concentrations were found to be 76 to 101 particles cm^-3 ; the mean concentration was calculated to be 87 particles cm^-3. The aerosol particles in the maritime air were identified by electron microscopy and selected area electron diffraction analysis. About 20% of the aerosol particles were identified, and 80% of the particles were too small for electron diffraction analysis. Sea salt particles constituted 2% of the total, and clay minerals 3%; these particles were considered to be of natural origin. Solid combustion by-products such as coagulated carbon particles and fly ash particles constituted 16%. Despite the comparative remoteness of the sampling site, the measurements indicate that many anthropogenic aerosols were found using an electron microscope.
    Type of Medium: Series available for loan
    Pages: iv, 48 Seiten , Illustrationen
    Series Statement: CRREL Report 78-20
    Language: English
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  • 197
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    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/6
    In: CRREL Report, 78-6
    Description / Table of Contents: A new freezing mechanism, called segregation freezing, is proposed to explain the generation of the suction force that draws pore water up to the freezing surface of a growing ice lens. The segregation freezing temperature is derived by applying thermodynamics to a soil mechanics concept that distinguishes the effective pressure from the neutral pressure. The frost-heaving pressure is formulated in the solution of the differential equations of the simultaneous flow of heat and water, of which the segregation freezing temperature is one of the boundary conditions.
    Type of Medium: Series available for loan
    Pages: iv, 13 Seiten , Illustrationen
    Series Statement: CRREL Report 78-6
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Introduction Segregation freezing Analysis Heat conduction in the nascent ice layer Water flow in the unfrozen soil Heat transfer in the unfrozen soil Energy balance at the segregation-freezing front Numerical computation Literature cited Appendix A. Essence of Portnov’s method Appendix B. Frost-heaving without air available
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  • 198
    Monograph available for loan
    Monograph available for loan
    Cambridge [u.a.] : Cambridge Univ. Press
    Call number: M 97.0297
    Type of Medium: Monograph available for loan
    Pages: vii, 367 S.
    ISBN: 0521239397
    Classification:
    Geochemistry
    Language: English
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  • 199
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-77/25
    In: CRREL Report, 77-25
    Description / Table of Contents: Results of a study to determine the feasibility of using an impulse radar to detect moisture variations in the built-up roof at CRREL and to monitor the curing of concrete are presented. The results indicate that impulse radar can be used to detect wide variations in roof moisture associated with built-up roof surface deterioration and that this technique has the potential of providing a nondestructive test method for measuring the strength of concrete during curing.
    Type of Medium: Series available for loan
    Pages: iv, 9 Seiten , Illustrationen
    Series Statement: CRREL Report 77-25
    Language: English
    Note: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric units of measurement Introduction Impulse radar system Results and discussion Conclusions and recommendations Literature cited ILLUSTRATIONS Figure Relative locations where impulse radar measurements were made andsamples for moisture determinations were obtained on the CRREL roof Impulse radar signal reflected from metal sheet resting on roof Impulse radar signal reflection from roof at station A Impulse radar surface reflection coefficient versus moisture contentofroof Impulse radar signal reflection from aluminum foil on bottom of con-crete form and from aluminum sheet metal resting on top of form Unconfined compressive strength of concrete versus time Examples of X-Y plots of impulse radar signals obtained during thesounding of concrete slab Impulse radar signal reflection coefficients versus time for acuring concrete slab Calculated impulse radar signal attenuation in concrete slab versuselapsed time Dielectric constants versus time calculated from impulse radar signalInformation obtained during curing of concrete slab Unconfined compressive strength of concrete versus corrected reflec-tion coefficient calculated from impulse radar signal data obtainedduring the curing of concrete slab TABLES Comparison of roof moisture content with radar surface reflection coefficient and dielectric constant
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  • 200
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-77/18
    In: CRREL Report, 77-18
    Description / Table of Contents: Abstract: Models originally developed to describe the arching and the movement of granular materials through hoppers or chutes are applied to the arching and drift of pack ice in straits and gulfs having lengths of 50 to 500 km. Verification of the usefulness of the models is attempted by making comparisons with ice deformation patterns as observed via satellite imagery in the Bering Strait region and in Amundsen Gulf. The results are encouraging in that there is good correspondence between observed arching and lead patterns and those predicted by theory. In addition, values determined via the model for the angle of internal friction (≈ 30° to 35°) and the cohesive strength per unit thickness (≈ 2000 N/m) are similar to values obtained by other approaches. It is estimated that if the wind velocity parallel to the Bering Strait exceeds ≈ 6 m/s, there will be ice flow through the strait.
    Type of Medium: Series available for loan
    Pages: iii, 11 Seiten , Illustrationen
    Series Statement: CRREL Report 77-18
    Language: English
    Note: CONTENTS Abstract Preface Introduction Theory Limiting span of an arch Flow of pack ice through converging channels Stoppage of flow Applications St. Lawrence Amundsen Gulf Bering Strait Conclusion References
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