New permafrost and glacier research
著者
書誌事項
New permafrost and glacier research
Nova Science Publishers, c2009
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注記
Includes bibliographical references and index
内容説明・目次
内容説明
In geology, permafrost or permafrost soil is soil at or below the freezing point of water (0 DegreesC or 32 DegreesF) for two or more years. Ice is not always present, as may be in the case of nonporous bedrock, but it frequently occurs and it may be in amounts exceeding the potential hydraulic saturation of the ground material. Most permafrost is located in high latitudes (i.e. land in close proximity to the North and South poles), but alpine permafrost may exist at high altitudes in much lower latitudes. The extent of permafrost can vary as the climate changes. Today, approximately 20% of the Earth's land mass is covered by permafrost (including discontinuous permafrost) or glacial ice. A glacier is a large, slow-moving mass of ice, formed from compacted layers of snow, that slowly deforms and flows in response to gravity and high pressure. The word glacier comes from French via the Vulgar Latin glacia, and ultimately from Latin glacies meaning ice. Glacier ice is the largest reservoir of fresh water on Earth, and second only to oceans as the largest reservoir of total water. Glaciers cover vast areas of polar regions, are found in mountain ranges of every continent, and are restricted to the highest mountains in the tropics. The processes and landforms caused by glaciers and related to them are referred to as glacial. The process of glacier growth and establishment is called glaciation. Glaciers are sensitive monitors of climate conditions and are crucial to both world water resources and sea level variation. This book presents the latest research on both permafrost and glaciers.
目次
- Preface
- Permafrost
- Geotechnical Consideration and Technical Solutions for Infrastructure in Mountain Permafrost
- Permafrost Modeling in Weather Forecasts and Climate Projections
- Multidrug Resistant Bacteria in Permafrost: Isolation, Biodiversity, Phenotypic and Geotypic Analysis
- Similarities Between the Recent Permafrost in North-western Canada and the Pleistocene relict cryogenic forms in Central Europe (Hungary)
- Periglacial Landforms and Processes on Disko Island, Greenland
- Mountain Permafrost Degradation in the Nepal Himalayas and the Russia Altai Mountains
- Glaciers
- The Former Glaciation of High-(Tibet) and Central Asia and it's Global Climatic Impact-An Ice Age Theory with a Remark on Potential Warmer Climatic Cycles in the Future
- Fungi in High Arctic Glaciers
- The Expansion of Supraglaciel Lakes in the Himalayas: It's History and Mechanisms
- Surge-Type Glaciers on Disko Island, Greenland
- Index.
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