Antarctic Subglacial Aquatic Environments
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Antarctic Subglacial Aquatic Environments
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Author : Martin J. Siegert
language : en
Publisher: John Wiley & Sons
Release Date : 2013-05-02
Antarctic Subglacial Aquatic Environments written by Martin J. Siegert and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-05-02 with Science categories.
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.
Exploration Of Antarctic Subglacial Aquatic Environments
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2007-07-09
Exploration Of Antarctic Subglacial Aquatic Environments written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-07-09 with Science categories.
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.
Exploration Of Antarctic Subglacial Aquatic Environments
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Author : Committee on Principles of Environmental Stewardship for the Exploration and Study of Subglacial Environments
language : en
Publisher: National Academies Press
Release Date : 2007-07-12
Exploration Of Antarctic Subglacial Aquatic Environments written by Committee on Principles of Environmental Stewardship for the Exploration and Study of Subglacial Environments and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-07-12 with Nature categories.
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.
Exploration Of Antarctic Subglacial Aquatic Environments
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2007-08-09
Exploration Of Antarctic Subglacial Aquatic Environments written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-08-09 with Science categories.
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.
Exploration Of Subsurface Antarctica
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Author : M.J. Siegert
language : en
Publisher: Geological Society of London
Release Date : 2018-01-08
Exploration Of Subsurface Antarctica written by M.J. Siegert and has been published by Geological Society of London this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-08 with Science categories.
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.
Polar Lakes And Rivers
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Author : Warwick F. Vincent
language : en
Publisher: OUP Oxford
Release Date : 2008-09-11
Polar Lakes And Rivers written by Warwick F. Vincent and has been published by OUP Oxford this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-09-11 with Science categories.
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.
The Ecology Of Snow And Ice Environments
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Author : Johanna Laybourn-Parry
language : en
Publisher: Oxford University Press
Release Date : 2012-02-02
The Ecology Of Snow And Ice Environments written by Johanna Laybourn-Parry and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-02-02 with Nature categories.
The majority of extremophiles in ice and snow are microorganisms.
Antarctic Security In The Twenty First Century
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Author : Alan D. Hemmings
language : en
Publisher: Routledge
Release Date : 2012
Antarctic Security In The Twenty First Century written by Alan D. Hemmings and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Law categories.
The Antarctic Treaty (1959) was adopted for the purpose of bringing peace and stability to the region and to facilitate cooperation in scientific research conducted on and around the continent. It has now been over fifty years since the Antarctic Treaty's entry into force, nevertheless, security continues to both drive and shape the legal and policy regime which applies to Antarctica. This book explores a wide range of Antarctic and Southern Ocean issues through the lens of security. The contributions to this volume engage with a security discourse which has expanded beyond the traditional military domain to include notions of economic security, environmental security, food security, bio-security, heath security and human security. The chapters consider topics such as the implications for Antarctica and the Southern Ocean of the growing strategic competition between the rising powers of Asia, the possible effects of climate change on the authority, legitimacy and effectiveness of the Antarctic Treaty System, and the shift from 'strategic' security to 'human' security and its potential consequences for the Antarctic treaty regime.
Antarctic Lakes
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Author : Johanna Laybourn-Parry
language : en
Publisher: OUP Oxford
Release Date : 2014-08-14
Antarctic Lakes written by Johanna Laybourn-Parry and has been published by OUP Oxford this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-08-14 with Science categories.
The Antarctic continent carries the greatest diversity of lake environments on the planet: freshwater and saline lakes, tidal freshwater epishelf lakes, lakes on ice shelves and glacier surfaces, and over three hundred subglacial lakes; extraordinary ecosystems that have been separated from the atmosphere for up to millions of years. This book provides a unique and cutting edge synthesis of Antarctic limnology, drawing together current knowledge on geomorphology, morphometry, chemistry, community structure and function. It emphasises throughout the value of these near-pristine ecosystems as barometers of climate change, showing how responsive and vulnerable they are to the indirect impacts of anthropogenic activity. Antarctic Lakes begins with an introduction to their physical, chemical, and biological characteristics, providing a basis for understanding the subsequent detailed chapters on different lake types, and ends with a chapter considering the application of new technologies to polar limnology as well as identifying future research directions. This accessible text is suitable for both senior undergraduate and graduate students taking courses in Antarctic and polar limnology, and will also be of broad interest to researchers working in the areas of polar science, microbial ecology (and extremophiles), climatology, glaciology, and astrobiology.
Life At Extremes
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Author : Elanor Bell
language : en
Publisher: CABI
Release Date : 2012
Life At Extremes written by Elanor Bell and has been published by CABI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Science categories.
From arid deserts to icy poles, outer space to the depths of the sea, this exciting new work studies the remarkable life forms that have made these inhospitable environments their home. Covering not only micro-organisms, but also higher plants and animals such as worms, fish and polar plants, this book details the ecological, biological and biogeochemical challenges these organisms face and unifying themes between environments. Equally useful for the expert, student and casual scientific reader, this book also explores the impact of climate change, rapid seasonal changes and pollution on these extraordinary creatures.