Exploration Of Antarctic Subglacial Aquatic Environments

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309106354
Total Pages : 162 pages
Book Rating : 4.51/5 ( download)

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Download or read book Exploration of Antarctic Subglacial Aquatic Environments written by National Research Council and published by National Academies Press. This book was released on 2007-08-09 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antarctica is renowned for its extreme cold; yet surprisingly, radar measurements have revealed a vast network of lakes, rivers, and streams several kilometers beneath the Antarctic ice sheet. Sealed from Earth's atmosphere for millions of years, they may provide vital information about microbial evolution, the past climate of the Antarctic, and the formation of ice sheets, among other things. The next stage of exploration requires direct sampling of these aquatic systems. However, if sampling is not done cautiously, the environmental integrity and scientific value of these environments could be compromised. At the request of the National Science Foundation, this National Research Council assesses what is needed to responsibly explore subglacial lakes. Exploration of Antarctic Subglacial Aquatic Environments concludes that it is time for research on subglacial lakes to begin, and this research should be guided by internationally agreed upon protocols. The book suggests an initial protocol, which includes full characterization of the lakes by remote sensing, and minimum standards for biological and other types of contamination.

Author : Martin J. Siegert
Publisher : John Wiley & Sons
ISBN 13 : 1118671481
Total Pages : 642 pages
Book Rating : 4.81/5 ( download)

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Download or read book Antarctic Subglacial Aquatic Environments written by Martin J. Siegert and published by John Wiley & Sons. This book was released on 2013-05-02 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 192. Antarctic Subglacial Aquatic Environments is the first volume on this important and fascinating subject. With its underlying theme of bridging existing knowledge to future research, it is a benchmark in the history of subglacial lake exploration and study, containing up-to-date discussions about the history and background of subglacial aquatic environments and future exploration. The main topics addressed are identification, location, physiography, and hydrology of 387 subglacial lakes; protocols for environmental stewardship and protection of subglacial lake environments; details of three programs aiming to explore Vostok Subglacial Lake, Ellsworth Subglacial Lake, and Whillans Subglacial Lake over the next 3–5 years; assessment of technological requirements for exploration programs based on best practices for environmental stewardship and scientific success; and knowledge of subglacial lakes as habitats for microbial life and as recorders of past climate and ice sheet change. Its uniqueness, breadth, and inclusiveness will appeal to microbiologists and those interested in life in extreme environments, paleoclimatologists and those interested in sedimentary records of past changes, glaciologists striving to understand how water beneath glaciers affects their flow, and those engaged in developing technology to undertake direct measurement and sampling of extreme environments on Earth and in the solar system.

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309179246
Total Pages : 162 pages
Book Rating : 4.49/5 ( download)

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Download or read book Exploration of Antarctic Subglacial Aquatic Environments written by National Research Council and published by National Academies Press. This book was released on 2007-07-09 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antarctica is renowned for its extreme cold; yet surprisingly, radar measurements have revealed a vast network of lakes, rivers, and streams several kilometers beneath the Antarctic ice sheet. Sealed from Earth's atmosphere for millions of years, they may provide vital information about microbial evolution, the past climate of the Antarctic, and the formation of ice sheets, among other things. The next stage of exploration requires direct sampling of these aquatic systems. However, if sampling is not done cautiously, the environmental integrity and scientific value of these environments could be compromised. At the request of the National Science Foundation, this National Research Council assesses what is needed to responsibly explore subglacial lakes. Exploration of Antarctic Subglacial Aquatic Environments concludes that it is time for research on subglacial lakes to begin, and this research should be guided by internationally agreed upon protocols. The book suggests an initial protocol, which includes full characterization of the lakes by remote sensing, and minimum standards for biological and other types of contamination.

Author : Gianfranco Tamburelli
Publisher : Giuffrè Editore
ISBN 13 : 8814142165
Total Pages : 278 pages
Book Rating : 4.61/5 ( download)

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Download or read book The Antarctic Legal System written by Gianfranco Tamburelli and published by Giuffrè Editore. This book was released on 2008 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Warwick F. Vincent
Publisher : OUP Oxford
ISBN 13 : 0191550183
Total Pages : 352 pages
Book Rating : 4.88/5 ( download)

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Download or read book Polar Lakes and Rivers written by Warwick F. Vincent and published by OUP Oxford. This book was released on 2008-09-11 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to describe the ecology of high latitude lakes, rivers and glacial environments in both the North and South polar regions. From the lake-rich floodplains of the Arctic to the deep, enigmatic waters of Lake Vostok, Antarctica, these regions contain some of the most extraordinary aquatic ecosystems on Earth. They provide a fascinating diversity of habitats for plant, animal and microbial communities, and are proving to be valuable model systems for exploring many ecological themes including landscape-lake interactions, adaptation of life to environmental extremes, and controls on the structure and functioning of aquatic ecosystems. Some of these waters also have direct global implications, including permafrost thaw lakes as sources of greenhouse gases, subglacial aquatic environments as a storehouse of ancient microbes, and Arctic rivers as major inputs of freshwater and organic carbon to the World Ocean. Given that many polar areas are experiencing greater climate warming than at lower latitudes, these ecosystems can also be viewed as sentinels of global change. This timely volume brings together many of the world's leading researchers in polar limnology to describe these diverse aquatic environments and their ecology. It introduces each major ecosystem type, examines the similarities and differences between Arctic and Antarctic systems as well as their responses to environmental change, and describes new frontiers for future research. A glossary of terms is provided for non-specialists, and a set of colour plates introduces the ecosystems and their biota. Polar Lakes and Rivers will be of value to students and specialist researchers alike, as well as to those with a more general interest in aquatic ecology, polar environments or global change who require an authoritative overview of this fast emerging topic.

Author : M.J. Siegert
Publisher : Geological Society of London
ISBN 13 : 1786203227
Total Pages : 252 pages
Book Rating : 4.29/5 ( download)

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Download or read book Exploration of Subsurface Antarctica written by M.J. Siegert and published by Geological Society of London. This book was released on 2018-01-08 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our appreciation of glaciological processes in Antarctica suffers from a lack of observations in regions where numerical models indicate the ice sheet to be susceptible to ocean and/or atmospheric warming. The solution lies in the use and development of glacier geophysics. In this volume we present a series of papers that demonstrate how geophysics can be deployed in Antarctica to comprehend: (1) boundary conditions that influence ice flow such as subglacial topography, the distribution of basal water and ice-sheet rheology; (2) phenomena that might affect ice-flow processes, such as complex internal ice-sheet structures and the proposition of large stores of hitherto unappreciated groundwater; and (3) how glacigenic sediments and formerly glaciated terrain on, and surrounding, the continent can inform us about past ice-sheet dynamics. The volume also takes a historical view on developments leading to current knowledge, examines active ice-sheet processes, and points the way forward on how geophysics can advance quantitative understanding of Antarctic ice-sheet behaviour.

Author : Alan D. Hemmings
Publisher : Routledge
ISBN 13 : 1136324755
Total Pages : 370 pages
Book Rating : 4.58/5 ( download)

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Download or read book Antarctic Security in the Twenty-First Century written by Alan D. Hemmings and published by Routledge. This book was released on 2012-11-27 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Antarctic Treaty (1959) was adopted for the purpose of bringing peace and stability to Antarctica and to facilitate cooperation in scientific research conducted on and around the continent. It has now been over fifty years since the signing of the treaty, nevertheless security continues to drive and shape the laws and policy regime which governs the region. Antarctic Security in the Twenty-First Century: Legal and Policy Perspectives assess Antarctic security from multiple legal and policy perspectives. This book reviews the existing security construct in Antarctica, critically assesses its status in the early part of the Twenty-First century and considers how Antarctic security may be viewed in both the immediate and distant future. The book assesses emerging new security threats, including the impact of climate change and the issues arising from increased human traffic to Antarctica by scientists, tourists, and mariners. The authors call into question whether the existing Antarctic security construct framed around the Antarctic Treaty remains viable, or whether new Antarctic paradigms are necessary for the future governance of the region. The contributions to this volume engage with a security discourse which has expanded beyond the traditional military domain to include notions of security from the perspective of economics, the environment and bio-security. This book provides a contemporary and innovative approach to Antarctic issues which will be of interest to scholars of international law, international relations, security studies and political science as well as policy makers, lawyers and government officials with an interest in the region.

Author : Jacques Ganoulis
Publisher : John Wiley & Sons
ISBN 13 : 3527636668
Total Pages : 381 pages
Book Rating : 4.62/5 ( download)

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Download or read book Transboundary Water Resources Management written by Jacques Ganoulis and published by John Wiley & Sons. This book was released on 2013-09-13 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on an international symposium addressing a key issue in global development, this reference includes both the latest methodologies for and practical examples of effective management of transboundary water resources. Its multidisciplinary approach combines hydrology and environmental science with economic and political approaches, in line with new UNESCO and EU recommendations, which have been formulated and implemented with the active involvement of all three editors. By providing a theoretical framework as well as abundant case studies from southern Europe, Africa, Asia and South America, this handbook provides hydrologists, geologists, engineers and decision-makers with all the knowledge they need for their daily work.

Author : Warwick F. Vincent
Publisher : Oxford University Press
ISBN 13 : 0199213887
Total Pages : 363 pages
Book Rating : 4.87/5 ( download)

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Download or read book Polar Lakes and Rivers written by Warwick F. Vincent and published by Oxford University Press. This book was released on 2008-09-11 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of the ecology of high latitude lakes, rivers and glacial environments in both the North and South polar regions. It describes each ecosystem type, the remarkable aquatic life that thrives in these extreme habitats, and the similarities and differences between Arctic and Antarctic waters.

Author : Guido di Prisco
Publisher : Cambridge University Press
ISBN 13 : 1108580270
Total Pages : 383 pages
Book Rating : 4.74/5 ( download)

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Download or read book Life in Extreme Environments written by Guido di Prisco and published by Cambridge University Press. This book was released on 2020-10-15 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: From deep ocean trenches and the geographical poles to outer space, organisms can be found living in remarkably extreme conditions. This book provides a captivating account of these systems and their extraordinary inhabitants, 'extremophiles'. A diverse, multidisciplinary group of experts discuss responses and adaptations to change; biodiversity, bioenergetic processes, and biotic and abiotic interactions; polar environments; and life and habitability, including searching for biosignatures in the extraterrestrial environment. The editors emphasize that understanding these systems is important for increasing our knowledge and utilizing their potential, but this remains an understudied area. Given the threat to these environments and their biota caused by climate change and human impact, this timely book also addresses the urgency to document these systems. It will help graduate students and researchers in conservation, marine biology, evolutionary biology, environmental change and astrobiology better understand how life exists in these environments and their susceptibility or resilience to change.