ALBERT

Note: Contents: 1 Introduction. - 1.1 Basic Concepts and Definitions. - 1.1.1 What Gas Seepage Is, What It Is Not. - 1.1.2 A Jungle of Names: Seeps, Macroseeps, Microseepage, Microseeps, and Miniseepage. - 1.1.3 Seepage id est Migration. - 1.1.4 Microbial, Thermogenic, and Abiotic Methane. - 1.2 Significance of Seepage and Implications. - 1.2.1 Seepage and Petroleum Exploration. - 1.2.2 Marine Seepage on the Crest of the Wave. - 1.2.3 From Sea to Land. - 1.2.4 A New Vision. - References. - 2 Gas Seepage Classification and Global Distribution. - 2.1 Macro-Seeps. - 2.1.1 Gas Seeps. - 2.1.2 Oil Seeps. - 2.1.3 Gas-Bearing Springs. - 2.1.4 Mud Volcanoes. - 2.1.5 Miniseepage. - 2.1.6 The Global Distribution of Onshore Macro-Seeps. - 2.2 Microseepage. - 2.3 Marine Seepage Manifestations. - References. - 3 Gas Migration Mechanisms. - 3.1 Fundamentals. - 3.1.1 Sources and Pathways. - 3.1.2 Diffusion and Advection. - 3.2 Actual Mechanisms and Migration Forms. - 3.2.1 Bubble and Microbubble Flow. - 3.2.2 Gas Seepage Velocity. - 3.2.3 Matter Transport by Microbubbles. - 3.2.4 The Concept of Carrier Gas and Trace Gas. - References. - 4 Detecting and Measuring Gas Seepage. - 4.1 Gas Detection Methods. - 4.1.1 Above-Ground (Atmospheric) Measurements. - 4.1.2 Ground Measurements. - 4.1.3 Measurements in Aqueous Systems. - 4.2 Indirect Methods. - 4.2.1 Chemical-Mineralogical Alterations of Soils. - 4.2.2 Vegetation Changes (Geobotanical Anomalies). - 4.2.3 Microbiological Analyses of Soils. - 4.2.4 Radiometric Surveys. - 4.2.5 Geophysical Techniques. - References. - 5 Seepage in Field Geology and Petroleum Exploration. - 5.1 Seepage and Faults. - 5.2 Microseepage Applied to Areal Petroleum Exploration. - 5.2.1 Which Gas Can Be Measured?. - 5.2.2 Microseepage Methane Flux Measurements. - 5.3 Seep Geochemistry for Petroleum System Evaluation. - 5.3.1 Recognising Post-genetic Alterations of Gases. - 5.3.2 Assessing Gas Source Type and Maturity. - 5.3.3 The Presence of Undesirable Gases (CO2, H2S, N2). - 5.3.4 Helium in Seeps… for Connoisseurs. - References. - 6 Environmental Impact of Gas Seepage. - 6.1 Geohazards. - 6.1.1 Methane Explosiveness. - 6.1.2 The Toxicity of Hydrogen Sulphide. - 6.1.3 Mud Expulsions and the Degradation of Soil-Sediments. - 6.2 Stray Gas, Natural versus Man-Made. - 6.3 Hypoxia in Aquatic Environments. - 6.4 Gas Emissions to the Atmosphere. - 6.4.1 Methane Fluxes and the Global Atmospheric Budget. - 6.4.2 Ethane and Propane Seepage, a Forgotten Potential Source of Ozone Precursors. - 6.5 Natural Seepage and CO2 Geological Sequestration. - References. - 7 Seepage in Serpentinised Peridotites and on Mars. - 7.1 Seeps and Springs in Active Serpentinisation Systems. - 7.1.1 Where Abiotic Methane Is Seeping. - 7.1.2 How Abiotic Methane in Land-Based Serpentinisation Systems Is Formed. - 7.1.3 How to Distinguish Abiotic and Biotic Methane. - 7.1.4 Seepage to the Surface. - 7.1.5 Is Abiotic Gas Seepage Important for the Atmospheric Methane Budget?. - 7.2 Potential Methane Seepage on Mars. - 7.2.1 Looking for Methane on Mars. - 7.2.2 A Theoretical Martian Seepage. - References. - 8 Gas Seepage and Past Climate Change. - 8.1 Past Seepage Stronger than Today. - 8.2 Potential Proxies of Past Seepage. - 8.3 Methane and Quaternary Climate Change. - 8.3.1 Traditional Models: Wetlands versus Gas Hydrates. - 8.3.2 Adding Submarine Seeps. - 8.3.3 Considering Onshore and Offshore Seepage in Total. - 8.3.4 CH4 Isotope Signatures in Ice Cores. - 8.4 Longer Geological Time Scale Changes. - 8.4.1 The Concept of Sedimentary Organic Carbon Mobilization. - 8.4.2 Paleogene Changes. - References. - 9 Seeps in the Ancient World: Myths, Religions, and Social Development. - 9.1 Seeps in Mythology and Religion. - 9.2 Seeps in Social and Technological Development. - References. - Epilogue. - Index.

Note: Inhaltsverzeichnis: Vorwort. - Kapitel 1: Konzepte für eine bessere Welt. - Was ist Nachhaltigkeit?. - Der Wert der Natur. - Conclusio: „Nachhaltigkeit“ – ein schwer zu definierender Begriff. - Kapitel 2: Was das Meer zu leisten vermag. - Das Gute im Meer. - Der bedrohte Ozean. - Conclusio: Ökosystemleistungen des Meeres in Gefahr. - Kapitel 3: Die Politik und das Meer. - Von der Schwierigkeit, das Meer zu verwalten. - Conclusio: Das Ideal der guten Meerespolitik. - Kapitel 4: Hoffnung für den Ozean. - Fahrplan für eine nachhaltige Zukunft?. - Meeresschutz ist möglich. - Conclusio: Wie Meeresschutz funktionieren kann. - Gesamt-Conclusio. - Glossar. - Mitwirkende. - Quellenverzeichnis. - Abbildungsverzeichnis. - Index. - Abkürzungen. - Partner und Danksagung. - Impressum.

Note: Contents: Preface. - Chapter 1: Concepts for a better world. - What is sustainability?. - The value of nature. - Conclusion: “Sustainability” – a difficult concept to define. - Chapter 2: How the sea serves us. - The bounty of the sea. - Oceans under threat. - Conclusion: Marine ecosystem services at risk. - Chapter 3: Politics and the oceans. - On the difficulty of governing the sea. - Conclusion: The ideal of good marine policy. - Chapter 4: Hope for the oceans. - Roadmap towards a sustainable future?. - Protecting the seas is possible. - Conclusion: How marine conservation can work. - Overall conclusion. - Glossary. - Contributors. - Bibliography. - Table of figures. - Index. - Abbreviations. - Partners and Acknowledgements. - Publication details.

Note: Contents: Preface. - Chapter 1: Overview of modern and Quaternary vegetation in China. - 1.1 Northwest region / Tang Lingyu and Shen Caiming. - 1.1.1 Overview of modern vegetation. - 1.1.1.1 Gobi desert and desert vegetation in eastern Xinjiang. - 1.1.1.2 Extremely arid desert and shrubland vegetation in the Qaidam Basin. - 1.1.1.3 Arid desert shrub and semi-shrub vegetation in the Hexi Corridor. - 1.1.1.4 Sylvosteppe or pine-oak forest in the transitional region between semi-humid and semi-arid monsoonal climate of temperate zone in the Loess Plateau. - 1.1.2 Overview of Quaternary vegetation. - 1.1.2.1 Vegetation and environment since the early Pleistocene in Qinghai. - 1.1.2.2 Holocene vegetation succession of steppe/meadow in north Xizang (Tibet). - 1.1.2.3 Vegetation and environment since the late Pleistocene in the Loess Plateau. - 1.1.2.4 Vegetation and environment since the early Pleistocene in Xinjiang. - 1.2 Northern region / Tang Lingyu and Li Chunhai. - 1.2.1 Overview of modern vegetation. - 1.2.1.1 Coniferous and broadleaved forest and meadow of temperate zone in Northeast China. - 1.2.1.2 Oak forest of river valley, Chinese pine forest, and shrub steppe in the lower valley of Liaohe River, North China plain, southern Shanxi, and central Shaanxi plain. - 1.2.2 Overview of Quaternary vegetation. - 1.2.2.1 Vegetation and environment since the early Pleistocene in North China. - 1.2.2.2 Vegetation and environment since the early Pleistocene in Northeast China. - 1.3 Southeast region / Shu Junwu and Tang Lingyu. - 1.3.1 Overview of modern vegetation. - 1.3.2 Overview of Quaternary vegetation. - 1.3.2.1 Vegetation succession since the mid-Pleistocene in Hubei. - 1.3.2.2 Vegetation and environment since the late Pleistocene in the lower valley of the Yangtze River. - 1.3 .2.3 Forest succession since the last glaciation in southeast coast of Fujian. - 1.3.2.4 Vegetation and environment since the late Pleistocene in the central Taiwan. - 1.4 South region / Mao Limi, Tang Lingyu and Shen Cairning. - 1.4.1 Overview of modern vegetation. - 1.4.1.1 Vegetation in the southern zone of middle subtropical evergreen broadleaved forest. - 1.4.1.2 Vegetation in the zone of south subtropical evergreen broadleaved forest. - 1.4.1.3 Tropical semi-evergreen monsoonal forest and tropical monsoonal forest. - 1.4.2 Overview of Quaternary vegetation. - 1.4.2.1 Vegetation in the Zhujiang delta and Chaozhou plain since the Pleistocene recorded by pollen and spores. - 1.4.2.2 Vegetation and climate since the late Pleistocene in Leizhou Peninsula and Holocene vegetation and climate in Hainan Island. - 1.4.2.3 Late Quaternary pollen and spores, vegetation and climate records in the South. - 1.4.2.4 Vegetation and climate since the late Pleistocene in Hong Kong. - 1.5 Southwest region / Shu Junwu, Tang Lingyu and Shen Caiming. - 1.5.1 Overview of modern vegetation. - 1.5.1.1 Vegetation of evergreen broadleaved forest in the Yunnan , Guizhou and western Sichuan Plateau. - 1.5.1.2 Vegetation of coniferous forest in southeast Xizang. - 1.5.2 Overview of Quaternary vegetation. - 1.5.2.1 Holocene vegetation in northwest Yunnan. - 1.5.2.2 Vegetation and monsoonal climate history since the late Pleistocene in western and south-central Yunnan. - 1.5.2.3 Holocene vegetation in western Sichuan. - 1.5.2.4 Vegetation and environment since the late Pleistocene in Guizhou. - 1.5.2.5 Vegetation and monsoonal climate history since the late Pleistocene in southeastern Xizang. - Chapter 2 Main types of Quaternary pollen and spores and their characteristics in different regions of China. - 2.1 Northwest region / Tang Lingyu and Mao Limi. - 2.1.1 Types of Quaternary pollen and spores in Northwest China. - 2.1.2 Identifiable features of major Quaternary pollen and spores in Northwest China. - 2.1.2.1 Identifiable features of main Compositae pollen types. - 2.1.2.2 Identifiable features of Artemisia, Tamarix, and Zygophyllum pollen. - 2.1.2.3 Identifiable features of Rhamnus, Hippophae, and Elaeagnus pollen. - 2.1.3 Descriptions of morphological features for major Quaternary spores and pollen in Northwest China. - 2.1.3.1 Photomicrographs for major Quaternary pollen types in Northwest China. - 2.1.3.2 Descriptions of morphological features for major Quaternary pollen types in Northwest China. - 2.2 Northern region / Tang Lingyu. - 2.2.1 Types of Quaternary pollen and spores in Northern China. - 2.2.2 Identifiable features of major Quaternary pollen and spores in Northern China. - 2.2.2.1 Identification keys of pollen morphology for several saccate genera of Pinaceae. - 2.2.2.2 Identifiable features of pollen morphology for genera of Betulaceae. - 2.2.2.3 Identifiable features of tricolpate pollen from Salix and Cruciferae. - 2.2.2.4 Identifiable features of tricolpate pollen from Ranunculaceae and Labiatae. - 2.2.3 Descriptions of morphological features for major Quaternary spores and pollen in Northern China. - 2.2.3.1 Photomicrographs for major Quaternary pollen types in Northern China. - 2.2.3.2 Descriptions of morphological features for major Quaternary pollen types in Northern China. - 2.3 Southeast region / Tang Lingyu and Shu Junwu. - 2.3.1 Types of Quaternary pollen and spores in Southeast China. - 2.3.2 Identifiable features of major Quaternary pollen and spores in Southeast China. - 2.3.2.1 Identifiable features of pollen morphology for Fagaceae. - 2.3.2.2 Identification keys of pollen morphology for several genera of Fagaceae. - 2.3.2.3 Identifiable features of pollen morphology for several genera of Fagaceae. - 2.3.2.4 Identifiable features of pollen morphology for several genera of tropical and subtropical. - 2.3.3 Descriptions of morphological features for major Quaternary pollen and spores in Southeast China. - 2.3.3.1 Photomicrographs for major Quaternary pollen types in Southeast China. - 2.3.3.2 Descriptions of morphological features for major Quaternary pollen types in Southeast China. - 2.4 South region / Mao Limi and Tang Lingyu. - 2.4.1 Types of Quaternary pollen and spores in South China. - 2.4.2 Identifiable features of main Quaternary pollen and spores in South China. - 2.4.2.1 Modern distribution and paleophytogeography of Sonneratia and its identifiable features of pollen morphology. - 2.4.2.2 Modern distribution and paleoecology significance of Rhizophoraceae and its identifiable features of pollen morphology. - 2.4.3 Photomicrographs and descriptions of morphological features for major Quaternary pollen and spores in South China. - 2.4.3.1 Photomicrographs for major Quaternary pollen and spores in South China. - 2.4.3.2 Descriptions of morphological features for major Quaternary pollen and spores in South China. - 2.5 Southwest region / Tang Lingyu and Shu Junwu. - 2.5.1 Types of Quaternary pollen and spores in Southwest China. - 2.5.2 Identifiable feature of main Quaternary pollen and spores in Southwest China. - 2.5.2.1 Plant distribution and pollen features of Pinaceae in Southwest China. - 2.5.2.2 Identification keys of pollen morphology for Pinaceae. - 2.5.3 Descriptions of morphological features for major Quaternary pollen and spores in Southwest China. - 2.5.3.1 Photomicrographs for common pollen in Southwest China. - 2.5.3.2 Descriptions of morphological features for major Quaternary pollen and spores in Southwest China. - Chapter 3 Plates and descriptions of Quaternary pollen and spores in different region of China. - 3.1 Northwest region / Tang Lingyu and Mao Limi. - Spores of the pteridophyte Plates 1-3. - Gymnosperm pollen Plates 3-10. - Angiosperm pollen Plates 11-63. - 3.2 Northern region / Tang Lingyu and Li Chunhai. - Spores of the algae Plates 1-3. - Spores of the bryophyte Plate 4. - Spores of the pteridophyte Plates 5-9. - Gymnosperm pollen Plates 9-24. - Angiosperm pollen Plates 25-63. - 3.3 Southeast region / Tang Lingyu, Zhou Zhongze and

Note: Der richtige Standort - ein Grußwort / Gotthilf Hempel. - Vorwort / Karin Lochte, Bernhard Diekmann. - Die Entwicklung der Forschungsstelle Potsdam / Hans-Wolfgang Hubberten, Klaus Dethloff, Bernhard Diekmann, Diedrich Fritzsche. - Die Entwicklung der Atmosphärenforschung / Klaus Dethloff, Markus Rex, Roland Neuber, Annette Rinke, Dörthe Handorf, Marion Maturilli, Christoph Ritter, Peter von der Gathen, Ralph Lehmann, Wolfgang Dorn, Ingo Wohltmann. - Die Entwicklung der Periglazialforschung: Rückblick und Ausblick / Guido Grosse, Hans-Wolfgang Hubberten. - Die AWIPEV-Station auf Spitzbergen / Roland Neuber, Marion Maturilli, Christoph Ritter. - Permafrost-Langzeit-Observatorien in Sibirien und auf Spitzbergen / Julia Boike, Anne Morgenstern, Guido Grosse. - Küstenforschung im Nordwesten Kanadas / Michael Fritz, Hugues Lantuit. - Das Atmosphärenobservatorium Palau - Polarforschung in den Tropen / Markus Rex, Katrin Müller. - Zum Nordpol auf einer Eisscholle - Teilnahme an der Driftstation NP-35 / Marion Maturilli, Jürgen Gräser. - Polarer Ozonverlust im Klimawandel / Markus Rex, Peter von der Gathen, Ralph Lehmann, Ingo Wohltmann. - Vom grünen Laserstrahl zur Mikrophysik des Aerosols / Christoph Ritter, Marion Maturilli, Roland Neuber. - Wie können arktische Klimaänderungen das Wetter und Klima in Mitteleuropa beeinflussen? / Dörthe Handorf, Klaus Dethloff, Annette Rinke, Ralf Jaiser, Wolfgang Dorn, Heidrun Matthes. - Permafrost im Wandel - Regionaler Fokus, globale Bedeutung / Jens Strauss, Josefine Lenz, Thomas Schneider von Deimling, Frank Günther, Lutz Schirrmeister. - Arktischer Klimawandel und terrestrische Ökosysteme / Ulrike Herzschuh, Thomas Laepple, Hanno Meyer, Kathleen Stoof-Leichsenring, Heike Zimmermann, Laura Epp, Stefan Kruse, Boris Biskaborn, Diedrich Fritzsche, Birgit Heim, Bernhard Diekmann. - Das EU-Projekt PAGE21 / Hans-Wolfgang Hubberten, Julia Boike, Hugues Lantuit, Leen Kaisa Viitanen. - ICOP 2016 / Karina Schollän, Hans-Wolfgang Hubberten. - Nationale und internationale Sekretariate. - Potsdamer Nachwuchs. - Impressum.

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: Preface. - Acknowledgements. - 1 Introduction. - 1.1 Origin and characters of silicon and its isotopes. - 1.2 A brief description of silicon geochemistry. - 1.3 The history of silicon isotope studies. - 2 Analytical methods of silicon isotope composition. - 2.1 Gas source isotope ratio mass spectrometric analysis of silicon isotopes. - 2.2 Multi-collector inductively coupled plasma mass spectrometric (MC-ICPMS) analysis of silicon isotopes. - 2.3 Secondary ion mass spectrometry analyses. - 2.4 Standards and reference materials for silicon isotope measurement. - 2.5 Comparison of different methods on silicon isotope analyses. - 3 Mechanisms of silicon isotope fractionation. - 3.1 The thermodynamic silicon isotope exchange fractionation. - 3.2 Kinetic fractionation of silicon isotopes. - 4 Distribution of silicon isotopes in nature. - 4.1 Silicon isotope compositions of extraterrestrial materials. - 4.2 Silicon isotope distribution in lithosphere. - 4.3 Silicon isotope compositions of soils. - 4.4 Hydrosphere. - 4.5 Biosphere. - 5 Several aspects of silicon isotope applications. - 5.1 Studies on global silicon cycle. - 5.2 Silicon isotope studies on environmental variation of ocean. - 5.3 Studies on mechanisms of absorption, transportation and precipitation of silicon in plant growth processes. - 5.4 Studies on silicon source and genesis of ore deposits. - References. - Index.

Note: Contents: 1 General introduction. - 1.1 Challenges of isotope-based temperature reconstructions. - 1.2 Thesis overview. - 1.3 Author contributions. - 2 Theoretical background. - 2.1 The isotopic composition of firn and ice. - 2.1.1 Fractionation of water isotopologues. - 2.1.2 Relationship with temperature. - 2.1.3 Measuring of the isotopic composition. - 2.2 Processes within the firn column. - 2.2.1 The firn column of polar ice sheets. - 2.2.2 The density of firn. - 2.2.3 The temperature profile of firn. - 2.2.4 Vapour diffusion in firn. - 2.3 Internal climate variability. - 3 Regional climate signal vs.local noise: a two-dimensional view of water isotopes. - 3.1 Introduction. - 3.2 Data and methods. - 3.3 Results. - 3.3.1 Trench isotope records. - 3.3.2 Single-profile representativity. - 3.3.3 Mean trench profiles. - 3.3.4 Spatial correlation structure. - 3.3.5 Statistical noise model. - 3.4 Discussion. - 3.4.1 Local noise vs. regional climate signal. - 3.4.2 Representativity of isotope signals. - 3.4.3 Implications. - 3.5 Conclusions. - 3.6 Appendix A: Derivation of noise model. - 3.6.1 Definitions. - 3.6.2 Derivation of model correlations. - 3.6.3 Estimation of parameters. - 3.7 Appendix B: Noise level after diffusion. - 4 Constraints on post-depositional isotope modifications in east antarctic firn. - 4.1 Introduction. - 4.2 Data and methods. - 4.2.1 Sampling and measurements. - 4.2.2 Trench depth scale. - 4.2.3 Spatial variability of trench profiles. - 4.2.4 Quantification of downward advection, densification and diffusion. - 4.2.5 Statistical tests. - 4.3 Results. - 4.3.1 Comparison of T15 and T13 isotope data. - 4.3.2 Expected isotope profile changes. - 4.3.3 Temporal vs. spatial variability. - 4.4 Discussion. - 4.4.1 Densification, diffusion and stratigraphic noise. - 4.4.2 Additional post-depositional modifications. - 4.5 Conclusions. - 5 On the similarity and apparent cycles of isotope variations. - 5.1 Introduction. - 5.2 Data and Methods. - 5.2.1 Data. - 5.2.2 Spectral analysis. - 5.2.3 Rice’s formula. - 5.2.4 Cycle length and amplitude estimation. - 5.2.5 Model for vertical isotope profiles. - 5.3 Results. - 5.3.1 Spectral analysis of isotope profiles. - 5.3.2 Theoretical and observed cycle length. - 5.3.3 Illustrative examples. - 5.3.4 Depth dependency of cycle length. - 5.3.5 Simulated vs. observed isotope variations. - 5.4 Discussion and summary. - 5.5 Conclusions. - 5.6 Appendix A: Input sensitivity. - 5.7 Appendix B: Additional results. - 5.8 Appendix C: Spectral significance testing. - 6 Timescale-dependency of antarctic isotope variations. - 6.1 Introduction. - 6.2 Data and methods. - 6.2.1 DML and WAIS isotope records. - 6.2.2 Spectral model. - 6.2.3 Timescale-dependent signal-to-noise ratio. - 6.2.4 Effects of diffusion and time uncertainty. - 6.2.5 Present-day temperature decorrelation. - 6.3 Results. - 6.3.1 Illustration of model approach. - 6.3.2 DML and WAIS isotope variability. - 6.4 Discussion. - 6.4.1 Interpretation of noise spectra. - 6.4.2 Interpretation of signal spectra. - 6.4.3 Signal-to-noise ratios. - 6.4.4 Differences between DML and WAIS. - 6.5 Conclusions. - 7 Declining temperature variability from LGM to holocene. - 8 General discussion and conclusions. - 8.1 Short-scale spatial and temporal isotope variability. - 8.1.1 Local spatial variability. - 8.1.2 Seasonal to interannual variability. - 8.1.3 Spatial vs. temporal variability. - 8.2 Extension to longer scales. - 8.2.1 Spatial vs. temporal variability on interannual timescales. - 8.2.2 Holocene and longer timescales. - 8.3 Concluding remarks and outlook. - Bibliography. - A Methods to: declining temperature variability from lgm to holocene. - A.1 Temperature proxy data. - A.2 Model-based temperature and variability change. - A.3 Temperature recalibration of proxy records. - A.3.1 Recalibration of ice-core records. - A.3.2 Recalibration of marine records. - A.4 Variance and variance ratio estimation. - A.5 Noise correction. - A.5.1 Testing effect of noise correction. - A.6 Effect of ecological adaption and bioturbation. - A.7 Effect of proxy sampling locations. - B Layering of surface snow and firn: noise or seasonal signal?. - B.1 Introduction. - B.2 Materials and methods. - B.2.1 Firn-core density profiles. - B.2.2 Trench density profiles. - B.2.3 Dielectric profiling and density estimates. - B.2.4 Comparison of DEP and CT density. - B.2.5 Ion measurements. - B.3 Results. - B.3.1 2-D trench density data. - B.3.2 Spatial correlation structure. - B.3.3 Comparison of mean density, isotope and impurity profiles. - B.3.4 Spectral analysis of vertical density data. - B.4 Discussion. - B.4.1 Spatial variability. - B.4.2 Representativeness of single profiles. - B.4.3 Seasonal cycle in snow density. - B.4.4 Density layering in firn and impurities. - B.5 Conclusions. - Acknowledgements - Danksagung.