Gas Inclusions In The Antarctic Ice Sheet And Their Significance

Author : Anthony J. Gow,Terrence Williamson
Publisher : Unknown
Page : 28 pages
File Size : 51,7 Mb
Release : 1975
Category : Bubbles
ISBN : UCR:31210018605988

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Gas Inclusions in the Antarctic Ice Sheet and Their Significance by Anthony J. Gow,Terrence Williamson Pdf

Cores obtained to the bottom of the Antarctic Ice Sheet at Byrd Station were used to analyze the physical properties of air bubbles trapped in the ice. Parameters measured were the sizes, shapes, abundances, spatial distributions, gas volumes and pressure of bubbles, and their variations with depth in the ice sheet. Bubbles occur abundantly in the top 800 m of ice but then gradually disappear until they can no longer be detected optically below 1100 m. This disappearance is not accompanied by any significant loss of air from the ice and all available evidence indicates that the air actually diffuses into the ice in response to increasing overburden pressure. Bubble pressure measurements show that (1) bubbles with pressures exceeding about 16 bars begin to relax back to this value soon after in situ pressures are relieved by drilling, (2) further slow decompression occurs with time, and (3) the rate of decompression is controlled to some extent by the intrinsic structural properties of the ice and its thermal and deformational history. Only small variations were observed in the entrapped air content of the ice cores; they probably reflect variations in the temperature and/or pressure of the air at the time of its entrapment, but the data are not sufficient to draw any firm conclusions regarding past variations in ice sheet thickness. Only ice from the bottom 4.83 m was found to lack any detectable trace of air.

Author : Anonim
Publisher : Unknown
Page : 164 pages
File Size : 53,6 Mb
Release : 1980
Category : Ice coring rigs
ISBN : UCSD:31822008908139

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Ice Cores by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 156 pages
File Size : 44,9 Mb
Release : 1977
Category : Glaciology
ISBN : UIUC:30112026691086

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Glaciological Data by Anonim Pdf

"This report documents most of the ice cores so far collected on a world-wide basis, as well as providing information on literature sources and on the currents status of research activities which may affect the types of data that can be archived."--Foreword.

Author : Cold Regions Research and Engineering Laboratory (U.S.)
Publisher : Unknown
Page : 334 pages
File Size : 47,8 Mb
Release : 2024-05-21
Category : Electronic
ISBN : OSU:32435055048417

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Research Report - Corps of Engineers, U.S. Army, Cold Regions Research and Engineering Laboratory by Cold Regions Research and Engineering Laboratory (U.S.) Pdf

Author : Gordon de Q. Robin
Publisher : Cambridge University Press
Page : 228 pages
File Size : 52,9 Mb
Release : 2010-06-24
Category : Science
ISBN : 0521153646

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The Climatic Record in Polar Ice Sheets by Gordon de Q. Robin Pdf

This multi-author work examines the glacial geology; measurement; temperature; and the climatic record from ice cores and other topics.

Author : Heinz Kohnen
Publisher : Unknown
Page : 28 pages
File Size : 49,8 Mb
Release : 1979
Category : Anisotropy
ISBN : UCSD:31822009359191

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Ultrasonic Velocity Investigations of Crystal Anisotropy in Deep Ice Cores from Antarctica by Heinz Kohnen Pdf

Author : Anonim
Publisher : Unknown
Page : 742 pages
File Size : 44,6 Mb
Release : 1976
Category : Aeronautics
ISBN : UOM:39015057253273

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Scientific and Technical Aerospace Reports by Anonim Pdf

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Author : Cold Regions Research and Engineering Laboratory (U.S.)
Publisher : Unknown
Page : 610 pages
File Size : 54,7 Mb
Release : 1979
Category : Frozen ground
ISBN : UOM:39015006064649

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Technical Report by Cold Regions Research and Engineering Laboratory (U.S.) Pdf

Author : W. S. B. Paterson
Publisher : Elsevier
Page : 480 pages
File Size : 40,5 Mb
Release : 2016-10-27
Category : Science
ISBN : 9781483287256

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The Physics of Glaciers by W. S. B. Paterson Pdf

This updated and expanded version of the second edition explains the physical principles underlying the behaviour of glaciers and ice sheets. The text has been revised in order to keep pace with the extensive developments which have occurred since 1981. A new chapter, of major interest, concentrates on the deformation of subglacial till. The book concludes with a chapter on information regarding past climate and atmospheric composition obtainable from ice cores.

Author : Allen Perry,Dr Russell Thompson,Russell Thompson
Publisher : Routledge
Page : 380 pages
File Size : 43,5 Mb
Release : 2013-03-07
Category : Science
ISBN : 9781134769124

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Applied Climatology by Allen Perry,Dr Russell Thompson,Russell Thompson Pdf

'Big freeze' conditions, storms, severe flooding, droughts, and heatwaves - recent extremes in weather, with their resultant physical, economic and human losses, highlight the vulnerability of society to changes in the atmosphere. Atmospheric pollution, urbanization, natural atmospheric disasters are causing dramatic changes in climatic environments. Applied Climatology examines the effects of climate on physical, biological and cultural environments. Specialist contributors from Europe, North America and Australasia examine the impacts of changing climates on the functioning and development of physical biological environments including glaciers, water resources, landforms, soils, vegetation and animals. Weather and climate effects day-to-day activities and lifestyles from the clothes we wear to the buildings we design, and the food and energy we produce. This book focusses on the relationship between climate and a wide range of human activities and responses relating to health and comfort, building design, transport systems, agriculture and fisheries, tourism and social, industrial and legal issues. Climate-environment relationships and impacts on human activities are predicted to change dramatically if global warming accelerates at the rates currently proposed. Applied Climatology examines the characteristics and consequences of the changing global climate and considers the future for both natural and human environments.

Author : Anonim
Publisher : Unknown
Page : 1932 pages
File Size : 51,8 Mb
Release : 1976
Category : Government publications
ISBN : STANFORD:36105006328988

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Monthly Catalog of United States Government Publications by Anonim Pdf

Author : United States. Superintendent of Documents
Publisher : Unknown
Page : 1408 pages
File Size : 54,6 Mb
Release : 1976
Category : United States
ISBN : STANFORD:36105021034173

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Monthly Catalog of United States Government Publications, Cumulative Index by United States. Superintendent of Documents Pdf

Author : Anonim
Publisher : Unknown
Page : 1212 pages
File Size : 42,7 Mb
Release : 1976
Category : Hydrology
ISBN : UOM:39015034724206

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Selected Water Resources Abstracts by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 260 pages
File Size : 43,5 Mb
Release : 1997
Category : Antarctica
ISBN : MINN:30000011027228

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Antarctic Journal of the United States by Anonim Pdf

Author : Roland A. Souchez,Reginald D. Lorrain
Publisher : Springer Science & Business Media
Page : 207 pages
File Size : 53,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642581878

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Ice Composition and Glacier Dynamics by Roland A. Souchez,Reginald D. Lorrain Pdf

Ice composition has until now been mostly used for reconstructing the environment of the past. A great research effort is made today to model the climate system in which the ice cover at the earth sur face plays a prominent role. To obtain a correct model of the ice sheets, due attention must be paid to the physical processes operating at the interfaces, i. e. the boundary conditions. The idea behind the title of this book is that the study of ice composition can shed some light on the various processes operating at the ice bedrock and ice-ocean interfaces and more generally on glacier dy namics. The book is not intended as a treatise on some specialized topic of glaciology. It is mainly the product of the experience of the two authors gained over several years research on the subject. The two authors are both members of the same university department and personal friends. The book was prepared in the following way. After a first draft of the complete book had been written by the first author, it was put in the hands of the second. The final version sent to the publishers is therefore the result of ex tended discussion, while at the same time preserving the unity of style that would have been lost had the two authors written selected chapters of the book individually. The book is organized into two distinct parts.