ALBERT

Note: Contents: Introduction. - A changing climate. - The emerging land. - The frozen past. - From ice to sea. - Plant adaptation. - Land of contrasts. - Sheep farming - now and in the future. - Methane in the Arctic. , Parallel texts in Danish and English

Note: Contents: Preface to Fourth Edition. - Preface to Third Edition. - Preface to Second Edition. - Preface to First Edition. - Acknowledgments. - PART I THE PERIGLACIAL DOMAIN. - 1 Introduction. - 1.1 The Periglacial Concept. - 1.2 Diagnostic Criteria. - 1.3 Periglacial Environments. - 1.4 The Periglacial Domain. - 1.5 The Periglacial Domain and the Cryosphere. - 1.6 Disciplinary Considerations. - 1.6.1 The Growth of Geocryology. - 1.6.2 The Challenge of Quaternary Science. - 1.6.3 Periglacial Geomorphology or Cold-Region Geomorphology?. - 1.7 Societal Considerations. - 1.8 The Growth of Periglacial Knowledge. - 2 Periglacial Climates. - 2.1 Boundary Conditions. - 2.2 Cold Deserts. - 2.3 Regional Climates. - 2.3.1 High Arctic Climates. - 2.3.2 Continental Climates. - 2.3.3 Alpine Climates. - 2.3.4 Montane Climates. - 2.3.5 Climates of Low Annual Temperature Range. - 2.3.6 Antarctica: A Special Case. - 2.4 Snow and Ice. - 2.5 Wind. - 2.6 Ground Climates. - 2.6.1 The 'n'-Factor. - 2.6.2 The Thermal Offset. - 2.6.3 The Ground Temperature Regime. - 2.7 Periglacial Climates and Global Climate Change. - 2.7.1 Basic Facts. - 2.7.2 Why Climate-Cryosphere Interactions Accelerate Climate Warming. - 3 Periglacial Ecosystems. - 3.1 General Statement. - 3.2 Biogeographic Zonation and Major Vegetation Types. - 3.3 Adaptations to Cold, Snow, Wind and Aridity. - 3.4 The Effect of Vegetation. - 3.5 The Polar Deserts. - 3.5.1 The High Arctic Polar Deserts. - 3.5.2 The High Arctic Polar Semi-Deserts. - 3.6 The Polar Desert-Tundra Transition. - 3.7 The Low-Arctic Tundra. - 3.8 The Forest-Tundra Bioclimatic Boundary (The Tree Line). - 3.9 The Boreal Forest. - 3.10 The Alpine and Montane Ecosystems. - 3.11 Antarctica - A Special Case. - 3.12 Periglacial Ecosystems and Climate Change. - PART II FROZEN GROUND AND PERMAFROST. - 4 Ground Freezing, Permafrost and the Active Layer. - 4.1 Introduction. - 4.2 Ground Freezing. - 4.2.1 Basic Concepts. - 4.2.2 Ice Segregation. - 4.2.3 "The Frozen Fringe'. - 4.2.4 Frost Heave. - 4.3 Perennially-Frozen Ground (Permafrost). - 4.4 Moisture and Ice Within Permafrost. - 4.5 Thermal and Physical Properties. - 4.5.1 The Geothermal Regime. - 4.5.2 The TTOP Model. - 4.5.3 Physical Properties. - 4.5.4 Thermal Properties. - 4.6 Permafrost Hydrology. - 4.6.1 Aquifers. - 4.6.2 Hydrochemistry. - 4.6.3 Groundwater Icings. - 4.7 The Active Layer. - 4.7.1 Terminology. - 4.7.2 The Active-Layer Thermal Regime. - 4.7.3 The Transient Layer. - 4.7.4 The Stefan Equation. - 5 Permafrost Distribution and Stability. - 5.1 Introduction. - 5.2 Controls over Permafrost Distribution. - 5.2.1 Relief and Aspect. - 5.2.2 Rock Type. - 5.2.3 Vegetation. - 5.2.4 Snow Cover. - 5.2.5 Fire. - 5.2.6 Lakes and Surface Water Bodies. - 5.3 Spatial Extent of Permafrost and Frozen Ground. - 5.3.1 Latitudinal Permafrost. - 5.3.2 Alpine (Mountain) Permafrost. - 5.3.3 Montane Permafrost. - 5.3.4 Seasonally-Frozen Ground. - 5.4 Sub-Sea and Relict Permafrost. - 5.4.1 Sub-Sea Permafrost. - 5.4.2 Relict (Terrestrial) Permafrost. - 5.5 Permafrost and Ecosystems. - 5.6 Permafrost Monitoring and Mapping. - 5.6.1 CALM and GTN-P (TSP). - 5.6.2 BTS and Mountain Permafrost Probability Mapping. - 5.7 Climate Warming and Permafrost. - 5.7.1 Evidence for Warming Permafrost. - 5.7.2 Evidence for Thawing Permafrost. - 6 Ground Ice and Cryostratigraphy. - 6.1 Introduction. - 6.2 Quantitative Parameters. - 6.3 Epigenetic, Syngenetic and Polygenetic Permafrost. - 6.4 Classification. - 6.4.1 The Russian Approach. - 6.4.2 The North American Approach. - 6.5 Main Ground Ice Types. - 6.5.1 Pore Ice. - 6.5.2 Segregated Ice. - 6.5.3 Intrusive Ice. - 6.5.4 Vein Ice. - 6.5.5 Other Types of Ice. - 6.6 Ice Distribution. - 6.6.1 Amounts. - 6.6.2 Distribution with Depth. - 6.6.3 Ice in Bedrock. - 6.6.4 Ice in Poorly-Lithified Sediments. - 6.7 Cryostratigraphy and Cryolithology. - 6.7.1 Cryostructural Analysis. - 6.7.2 Cryostructures of Epigenetic and Syngenetic Permafrost. - 6.7.3 Thaw Unconformities. - 6.7.4 Aggradational Ice. - 6.7.5 Icy Bodies and Ice, Sand and Soil Pseudomorphs. - 6.8 Ice Crystallography. - 6.9 Ice Geochemistry. - 6.10 Massive Ice and Massive-Icy Bodies. - 6.10.1 Nature and Extent. - 6.10.2 Intra-Sedimental Ice. - 6.10.3 Buried Glacier Ice. - 6.11 Cryostratigraphy and Past Environments. - 7 Aggradational Permafrost Landforms. - 7.1 Introduction. - 7.2 How Does Permafrost Aggrade?. - 7.2.1 The Illisarvik Drained-Lake Experiment. - 7.3 Thermal-Contraction-Crack Polygons. - 7.3.1 Coefficients of Thermal Expansion and Contraction. - 7.3.2 Ice, Sand and Soil ('Ground') Wedges. - 7.3.3 Development of the Polygon Net. - 7.3.4 Polygon Morphology. - 7.3.5 Controls over Cracking. - 7.3.6 Climatic Significance. - 7.4 Ice and Sand Wedges. - 7.4.1 Epigenetic Wedges. - 7.4.2 Syngenetic Wedges. - 7.4.3 Anti-Syngenetic Wedges. - 7.4.4 Growth and Deformation of Wedges. - 7.5 Organic Terrain. - 7.5.1 Palsas. - 7.5.2 Peat Plateaus. - 7.6 Frost Mounds. - 7.6.1 Perennial-Frost Mounds. - 7.6.2 Hydraulic (Open) System Pingos. - 7.6.3 Hydrostatic (Closed) System Pingos. - 7.6.4 Other Perennial-Frost Mounds. - 7.6.5 Seasonal-Frost Mounds. - 7.6.6 Hydrolaccoliths and Other Frost-Induced Mounds. - 8 Thermokarst Processes and Landforms. - 8.1 Introduction. - 8.2 Thawing Ground. - 8.2.1 Thaw Strain and Thaw Settlement. - 8.2.2 Potential Depths of Soil Freezing and Thawing. - 8.2.3 The Development of Thermokarst. - 8.3 Causes of Thermokarst. - 8.3.1 General Comments. - 8.3.2 Specific Causes. - 8.4 Thaw-Related Processes. - 8.4.1 Thermokarst Subsidence (Thaw Settlement). - 8.4.2 Thermal Erosion. - 8.4.3 Other Processes. - 8.5 Thermokarst Sediments and Structures. - 8.5.1 Involuted Structures. - 8.5.2 Retrogressive-Thaw-Slumps and Debris-Flow Deposits. - 8.5.3 Ice-Wedge Pseudomorphs and Composite-Wedge Casts. - 8.5.4 Ice, Silt, Sand and Gravel Pseudomorphs. - 8.6 Thermokarst Landscapes. - 8.6.1 The Alas-Thermokarst Relief of Central Yakutia. - 8.6.2 The Western North American Arctic. - 8.6.3 The Ice-Free Areas of Continental Antarctica. - 8.7 Ice-Wedge Thermokarst Relief. - 8.7.1 Low-Centred Polygons. - 8.7.2 High-Centred Polygons. - 8.7.3 Badland Thermokarst Relief. - 8.8 Thaw Lakes and Depressions. - 8.8.1 Lakes and Taliks. - 8.8.2 Morphology. - 8.8.3 Growth and Drainage. - 8.8.4 Oriented Thaw Lakes. - Part III Periglacial Geomorphology. - 9 Cold-Climate Weathering. - 9.1 Introduction. - 9.2 General Weathering Facts. - 9.3 Freezing and Thawing Indices. - 9.4 Rock (Frost?) Shattering. - 9.4.1 Frost Action and Ice Segregation. - 9.4.2 Insolation and Thermal Shock. - 9.4.3 Perspective. - 9.5 Chemical Weathering. - 9.5.1 Karkevagge. - 9.5.2 Solution and Karstification. - 9.5.3 Salt Weathering. - 9.6 Cryogenic Weathering. - 9.6.1 Cryogenic Disintegration. - 9.6.2 The Coefficient of Cryogenic Contrast. - 9.6.3 Physico-Chemical Changes. - 9.6.4 Problematic Phenomena. - 9.7 Cryobiological Weathering. - 9.8 Rates of Cold-Climate Bedrock Weathering. - 9.9 Cryosols and Cryopedology. - 9.9.1 Cryosols. - 9.9.2 Classification. - 9.9.3 Cryosolic Micromorphology. - 10 Mass-Wasting Processes and Active-Layer Phenomena. - 10.1 Introduction. - 10.2 Slow Mass-Wasting Processes. - 10.2.1 Solifluction. - 10.2.2 Frost Creep. - 10.2.3 Gelifluction. - 10.2.4 Solifluction Deposits and Phenomena. - 10.3 Rapid Mass-Wasting Processes. - 10.3.1 Active-Layer-Detachment Slides. - 10.3.2 Debris Flows, Slush Flows and Avalanches. - 10.3.3 Rockfall. - 10.4 Snow Hydrology and Slopewash Processes. - 10.4.1 Snow Hydrology and Snowbanks. - 10.4.2 Surface and Subsurface Wash. - 10.5 Active-Layer Phenomena. - 10.5.1 Frost Heaving. - 10.5.2 Bedrock Heave. - 10.5.3 Upward Heaving of Stones and Objects. - 10.5.4 Stone Tilting. - 10.5.5 Ne

Note: CONTENTS Abstract Preface Introduction St. Marys River Ice problems Remedial measures Field studies Highlights, trends, and major findings Modifications to boom Maximum forces Ship traffic Characteristics Effect of boom forces Effect on ice Conclusion Literature cited Appendix A: Ice boom forces

Note: CONTENTS Abstract Preface Introduction Experiments Test flume facility Experimental apparatus Experimental procedure Results Plastic versus freshwater ice Shoreline forces Boom forces Average shear stress under ice cover Internal forces Discussion Data scatter Summary and conclusions Literature cited Appendix A: Experimental results

Note: Inhalt Vorwort „Zu diesem Heft“ / B. BRÜMMER 1. Athmosphärische Bedingungen und Energiehaushalt der Arktis im Jahresgang / B. BRÜMMER 2. Regionale und globale Wechselwirkung zwischen arktischem Meereis und der atmosphärischen Zirkulation / K. DETHLOFF, A. RINKE, D. HANDORF, R. JAISER, W. DORN, A. SOMMERFELD 3. Arktische Verstärkung und Wolken / M. WENDISCH, A. EHRLICH 4. Arktische Zyklonen: Häufigkeit und Wirkung auf das Meereis / B. BRÜMMER 5. Polare Kaltluftausbrüche / M. GRYSCHKA 6. Arktische Polynjen / S. WILLMES, G. HEINEMANN, A. PREUSSER 7. Turbulente Energie- und Impulsflüsse in der atmosphärischen Grenzschicht über dem polaren Ozean / C. LÜPKES, A. SCHMITT, V. GRYANIK 8 Der katabatische Wind über Grönland / G. HEINEMANN Buchbesprechung Examina im Jahr 2017

Note: Contents Abstract Preface Nomenclature Introduction Test objectives Experimental setup and procedures Facilities Test fixture Data acquisiton system Ice sheets Measurement of ice properties Daily test summary Experimental results and discussion Observations Ice force records Frequency of ice force variations Discussion Maximum crushing forces Mean effective pressure or specific energy of ice in crushing Failure energy of ice Ratio of maximum force to mean force Summary and conclusions Literature cited Appendix A: Data for continuous crushing tests

Note: Contents: Membership of the National Committee on Antarctic Research in the Federal Republic of Germany. - Introduction. - Stations. - I. Record of Activities (past and ongoing), April 83-October 84. - II. Planned Activities, October 84-October 85. - References.