Holocene Sea Ice-ocean-climate Variability from Adélie Land, East Antarctica

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Holocene Sea Ice-ocean-climate Variability from Adélie Land, East Antarctica by : Thomas R. Gregory

Download or read book Holocene Sea Ice-ocean-climate Variability from Adélie Land, East Antarctica written by Thomas R. Gregory and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine sedimentation from the Adélie Land continental margin of East Antarctica provides unique high resolution records of Holocene environmental change. The subannually resolved sediment cores MD03-2601 (66°03.07'S, 138°33.43'E) and IODP-318-U1357B (66°24.7990'S, 140°25.5705'E) from the Dumont d'Urville Trough,Adélie Land, document atmospheric and oceanic processes impacting on biogenic sedimentation on the Adélie Land continental shelf during the Holocene. Resin embedded, continuous polished thin sections from each core were analysed for diatom content and sediment microfabric using scanning electron microscope backscattered electron imagery. The sediments contained repeating sequences of seasonal diatom-rich laminae which enabled multi-taper method time series analysis. Time series analysis shows that in the Hypsithermal there appears to have been an external (solar) control on interannual sedimentation as well as internal controls (e.g. the southern annular mode, SAM, and El Nino-southern Oscillation, ENSO); whilst in the Neoglacial internal climatic modes exerted a much stronger control. Quasi-biennial (2 - 3 year) peaks commonly occurred in analysis of both Hypsitherml and Neoglacial sequences. The distribution of resting spore-rich laminae in these sections suggests that a multidecadal (>50-years) variation between phasing of the SAM and ENSO systems may exert an important control on interannual environmental variability in the sections analysed. The distribution of diatom-derived biomarker proxies, namely C25 highly branched isoprenoid (HBI) alkenes, was compared to the diatom lamina-based record in core MD03-2601. At the Holocene scale, HBI diene and triene molecules have a positive association to sea ice associated diatom-rich laminae, with greater abundances of both HBI molecules and sea ice associated diatom laminae in the Neoglacial interval. However, at a sub-annual resolution there is no strong association between lamina type and HBI concentrations. This is attributed to a combination of: (i) the HBI alkenes recording a different signal to that of the diatom-rich laminae; (ii) interannual variation in HBI export that is greater than inter-seasonal variation, for which there is little modern data for comparison; (iii) possible diagenetic alteration of the HBI signal.

Antarctic Sea Ice Variability in the Southern Ocean-Climate System

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Publisher : National Academies Press
ISBN 13 : 0309456037
Total Pages : 83 pages
Book Rating : 4.3/5 (94 download)

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Book Synopsis Antarctic Sea Ice Variability in the Southern Ocean-Climate System by : National Academies of Sciences, Engineering, and Medicine

Download or read book Antarctic Sea Ice Variability in the Southern Ocean-Climate System written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-03-24 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sea ice surrounding Antarctica has increased in extent and concentration from the late 1970s, when satellite-based measurements began, until 2015. Although this increasing trend is modest, it is surprising given the overall warming of the global climate and the region. Indeed, climate models, which incorporate our best understanding of the processes affecting the region, generally simulate a decrease in sea ice. Moreover, sea ice in the Arctic has exhibited pronounced declines over the same period, consistent with global climate model simulations. For these reasons, the behavior of Antarctic sea ice has presented a conundrum for global climate change science. The National Academies of Sciences, Engineering, and Medicine held a workshop in January 2016, to bring together scientists with different sets of expertise and perspectives to further explore potential mechanisms driving the evolution of recent Antarctic sea ice variability and to discuss ways to advance understanding of Antarctic sea ice and its relationship to the broader ocean-climate system. This publication summarizes the presentations and discussions from the workshop.

Holocene Sediment Transport and Climate Variability of Offshore Adélie Land, East Antarctica

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Publisher :
ISBN 13 :
Total Pages : 143 pages
Book Rating : 4.:/5 (983 download)

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Book Synopsis Holocene Sediment Transport and Climate Variability of Offshore Adélie Land, East Antarctica by : Anna Borisovna Albot

Download or read book Holocene Sediment Transport and Climate Variability of Offshore Adélie Land, East Antarctica written by Anna Borisovna Albot and published by . This book was released on 2016 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The White Planet

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Publisher : Princeton University Press
ISBN 13 : 140084469X
Total Pages : 323 pages
Book Rating : 4.4/5 (8 download)

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Book Synopsis The White Planet by : Jean Jouzel

Download or read book The White Planet written by Jean Jouzel and published by Princeton University Press. This book was released on 2013-01-15 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: A gripping journey through the icy regions of our changing planet From the Arctic Ocean and ice sheets of Greenland, to the glaciers of the Andes and Himalayas, to the great frozen desert of Antarctica, The White Planet takes readers on a spellbinding scientific journey through the shrinking world of ice and snow to tell the story of the expeditions and discoveries that have transformed our understanding of global climate. Written by three internationally renowned scientists at the center of many breakthroughs in ice core and climate science, this book provides an unparalleled firsthand account of how the "white planet" affects global climate—and how, in turn, global warming is changing the frozen world. Jean Jouzel, Claude Lorius, and Dominique Raynaud chronicle the daunting scientific, technical, and human hurdles that they and other scientists have had to overcome in order to unravel the mysteries of past and present climate change, as revealed by the cryosphere--the dynamic frozen regions of our planet. Scientifically impeccable, up-to-date, and accessible, The White Planet brings cutting-edge climate research to general readers through a vivid narrative. This is an essential book for anyone who wants to understand the inextricable link between climate and our planet's icy regions.

Antarctic Climate Evolution

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Publisher : Elsevier
ISBN 13 : 0128191104
Total Pages : 806 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Antarctic Climate Evolution by : Fabio Florindo

Download or read book Antarctic Climate Evolution written by Fabio Florindo and published by Elsevier. This book was released on 2021-11-04 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antarctic Climate Evolution, Second Edition, enhances our understanding of the history of the world’s largest ice sheet, and how it responded to and influenced climate change during the Cenozoic. It includes terrestrial and marine geology, sedimentology, glacier geophysics and ship-borne geophysics, coupled with results from numerical ice sheet and climate modeling. The book’s content largely mirrors the structure of the Past Antarctic Ice Sheets (PAIS) program (www.scar.org/science/pais), formed to investigate past changes in Antarctica by supporting multidisciplinary global research. This new edition reflects recent advances and is updated with several new chapters, including those covering marine and terrestrial life changes, ice shelves, advances in numerical modeling, and increasing coverage of rates of change. The approach of the PAIS program has led to substantial improvement in our knowledge base of past Antarctic change and our understanding of the factors that have guided its evolution. Offers an overview of Antarctic climate change, analyzing historical, present-day and future developments Provides the latest information on subjects ranging from terrestrial and marine geology to sedimentology and glacier geophysics in the context of Antarctic evolution Fully updated to include expanded coverage of rates of change, advances in numerical modeling, marine and terrestrial life changes, ice shelves, and more

Climate Variability of Southern High Latitude Regions

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Publisher : CRC Press
ISBN 13 : 1000554597
Total Pages : 338 pages
Book Rating : 4.0/5 (5 download)

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Book Synopsis Climate Variability of Southern High Latitude Regions by : Neloy Khare

Download or read book Climate Variability of Southern High Latitude Regions written by Neloy Khare and published by CRC Press. This book was released on 2022-04-07 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to provide a comprehensive overview of climate change–related investigations carried out by Indian researchers through initiatives in southern high latitude regions. It explains climate variability over the Southern Ocean and Antarctica; air, sea, ice, and atmosphere interactions; and the impact of climate variability on sea ice and the polar atmosphere. The data were gathered at two Indian research bases, Maitri and Bharti, which are ideal sites to study and understand climatic evolution in Antarctic in the past and recent changes. This book helps to understand climatological perspectives and to evaluate some of the most pressing issues in the south polar region. FEATURES Highlights the achievements of India in the contemporary field of Antarctic climatology Presents four decades of research by Indian scientists in Antarctica, which is now shared for the first time with the global community Includes case studies on climatological and environmental conditions of natural archives to shed light on climate scenarios in the Southern Ocean and Antarctic regions Covers various aspects of climate variability and induced air-sea-ice-atmosphere interactions This book is edited by one of the top scientists and researchers of India in the field of paleoclimatology, and the contributors are experts in the Antarctic region.

Paleoclimatology

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Publisher : John Wiley & Sons
ISBN 13 : 1119591473
Total Pages : 560 pages
Book Rating : 4.1/5 (195 download)

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Book Synopsis Paleoclimatology by : Colin P. Summerhayes

Download or read book Paleoclimatology written by Colin P. Summerhayes and published by John Wiley & Sons. This book was released on 2020-06-10 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Life on our planet depends upon having a climate that changes within narrow limits – not too hot for the oceans to boil away nor too cold for the planet to freeze over. Over the past billion years Earth’s average temperature has stayed close to 14-15°C, oscillating between warm greenhouse states and cold icehouse states. We live with variation, but a variation with limits. Paleoclimatology is the science of understanding and explaining those variations, those limits, and the forces that control them. Without that understanding we will not be able to foresee future change accurately as our population grows. Our impact on the planet is now equal to a geological force, such that many geologists now see us as living in a new geological era – the Anthropocene. Paleoclimatology describes Earth’s passage through the greenhouse and icehouse worlds of the past 800 million years, including the glaciations of Snowball Earth in a world that was then free of land plants. It describes the operation of the Earth’s thermostat, which keeps the planet fit for life, and its control by interactions between greenhouse gases, land plants, chemical weathering, continental motions, volcanic activity, orbital change and solar variability. It explains how we arrived at our current understanding of the climate system, by reviewing the contributions of scientists since the mid-1700s, showing how their ideas were modified as science progressed. And it includes reflections based on the author’s involvement in palaeoclimatic research. The book will transform debate and set the agenda for the next generation of thought about future climate change. It will be an invaluable course reference for undergraduate and postgraduate students in geology, climatology, oceanography and the history of science.

The Ice Chronicles

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Publisher : UPNE
ISBN 13 : 161168384X
Total Pages : 266 pages
Book Rating : 4.6/5 (116 download)

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Book Synopsis The Ice Chronicles by : Paul Andrew Mayewski

Download or read book The Ice Chronicles written by Paul Andrew Mayewski and published by UPNE. This book was released on 2012-07-03 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: An exciting account of revolutionary new discoveries for understanding the earth's climate, and their implications for future scientific research and global environmental policy.

Sea Ice

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Publisher : John Wiley & Sons
ISBN 13 : 9781444317152
Total Pages : 641 pages
Book Rating : 4.3/5 (171 download)

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Book Synopsis Sea Ice by : David N. Thomas

Download or read book Sea Ice written by David N. Thomas and published by John Wiley & Sons. This book was released on 2009-11-06 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the Arctic perennial sea ice continues to disappear at an alarming rate, a full understanding of sea ice as a crucial global ecosystem, and the effects of its loss is vital for all those working with and studying global climate change. Building on the success of the previous edition, the second edition of Sea Ice, now much expanded and in full colour throughout, includes six completely new chapters with complete revisions of all the chapters included from the first edition. The Editors, Professor David Thomas and Dr Gerhard Dieckmann have once again drawn together an extremely impressive group of internationally respected contributing authors, ensuring a comprehensive worldwide coverage of this incredibly important topic. Sea Ice, second edition, is an essential purchase for oceanographers and marine scientists, environmental scientists, biologists, geochemists and geologists. All those involved in the study of global climate change will find this book to contain a wealth of important information. All libraries in universities and research establishments where these subjects are studied and taught will need multiple copies of this book on their shelves. truly multidisciplinary approach world leading authors and editors international in scope, covering both Arctic and Antarctic work of vital interest to all those involved in global warming and climate change research highly illustrated full colour book with colour images throughout

Past Antarctica

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Publisher : Academic Press
ISBN 13 : 0128179260
Total Pages : 328 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Past Antarctica by : Marc Oliva

Download or read book Past Antarctica written by Marc Oliva and published by Academic Press. This book was released on 2020-06-04 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Past Antarctica: Paleoclimatology and Climate Change presents research on the past and present of Antarctica in reference to its current condition, including considerations for effects due to climate change. Experts in the field explore key topics, including environmental changes, human colonization and present environmental trends. Addressing a wide range of fields, including the biosphere, geology and biochemistry, the book offers geographers, climatologists and other Earth scientists a vital resource that is beneficial to an understanding of Antarctica, its history and conservation efforts. Synthesizes research on the past and present of Antarctica, bringing together top Earth scientists who work in this discipline Presents the most complete reconstruction of the paleoclimate and environment of Antarctica, tying in long-term climatic changes to the current environment Offers perspectives from different branches of the Earth Sciences using a spatial-temporal lens

A Farewell to Ice

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Publisher : Oxford University Press
ISBN 13 : 0190691166
Total Pages : 273 pages
Book Rating : 4.1/5 (96 download)

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Book Synopsis A Farewell to Ice by : Peter Wadhams

Download or read book A Farewell to Ice written by Peter Wadhams and published by Oxford University Press. This book was released on 2017-08-08 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on five decades of research and observation, a haunting and unsparing look at the melting ice caps, and what their disappearance will mean. Peter Wadhams has been studying ice first-hand since 1970, completing 50 trips to the world's poles and observing for himself the changes over the course of nearly five decades. His conclusions are stark: the ice caps are melting. Following the hottest summer on record, sea ice in September 2016 was the thinnest in recorded history. There is now the probability that within a few years the North Pole will be ice-free for the first time in 10,000 years, entering what some call the "Artic death spiral." As sea ice, as well as land ice on Greenland and Antarctica, continues to melt, the rise in sea levels will devastate coastal communities across the world. The collapse of summer ice in the Artic will release large amounts of methane currently trapped by offshore permafrost. Methane has twenty-three times greater greenhouse warming effect per molecule than CO2; an ice-free arctic summer will therefore have an albedo effect nearly equivalent to that of the last thirty years. A sobering but urgent and engaging book, A Farewell to Ice shows us ice's role on our planet, its history, and the true dimensions of the current global crisis, offering readers concrete advice about what they can do, and what must be done.

Monthly Antarctic Sea Ice Extent Variability Since 1957 from Reconstructions and Observations

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Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)

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Book Synopsis Monthly Antarctic Sea Ice Extent Variability Since 1957 from Reconstructions and Observations by : Beatrice K. Waters

Download or read book Monthly Antarctic Sea Ice Extent Variability Since 1957 from Reconstructions and Observations written by Beatrice K. Waters and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: As climate change continues unabated, understanding Earth’s complex climate system remains critical. The Antarctic climate system is a crucial part of this system, and the sea ice surrounding the continent is an incredibly important element. With the largest change in albedo on Earth, Antarctic sea ice is responsible for reflecting solar radiation from the region. As seen in the Arctic as a result of climate change, without sea ice this solar radiation is absorbed by the low albedo ocean causing warming and further melt of sea ice in a positive feedback loop. Antarctic sea has not responded in the same way as the Arctic. Observations of Antarctic sea ice date back to October 1978 and have shown an overall increase in sea ice. A sudden decline in sea ice extent in 2016 was an unexpected turn of events, and a new record low extent in February 2023 has further complicated this. Due to the short records of Antarctic sea ice extent and the complex nature of the regional climate system, it is difficult to isolate the impacts of climate change in the region. To expand these short records, reconstructions have been utilized. Monthly reconstructions, based on observational temperature and pressure data, were created in order to extend this record to 1957. These reconstructions were analyzed in this study in order to determine their skill and understand how Antarctic sea ice extent has changed through the 1957-2020 period. This was done for the total sea ice extent around the Antarctic continent as well as the Bellingshausen-Amundsen, East Antarctic, King Hakon, Ross, and Weddell regions. The reconstructions were analyzed using correlation, regression, and comparison of means statistical methods in order to evaluate relationships between Antarctic climate data and sea ice extent, relationships between modes of climate variability and sea ice extent, changes in the seasonal cycle of sea ice extent, and trends in sea ice extent. It was of interest to determine if there were changes between the early 1957-1978 period and the 1979-2020 observational period, as this is a likely indicator of reconstruction performance. It was found that the monthly reconstructions generally have a high level of skill. Relationships between sea ice extent and Antarctic climate data and between sea ice extent and climate modes of variability were typically maintained. Specifically, the dipole relationship (increasing versus decreasing sea ice extent) between the Bellingshausen-Amundsen and Ross regions was demonstrated in the relationships analyzed in this study. Analysis of the seasonal cycle revealed changes through time, including statistically significant changes in annual sea ice growth for the total extent, Ross, King Hakon, and Weddell regions. Trend analysis suggests that the monthly reconstructions may capture the mid-century regime shift in sea ice extent found in Fogt et al. (2022), although this is not true for all sectors, specifically Ross. Correlations between these seasonal reconstructions and the monthly reconstructions analyzed in this study were highly variable and more analysis is needed to determine the cause. This study provides a crucial initial analysis of previously unanalyzed monthly SIE reconstructions. Extending the SIE record is a critically important part of understanding the future of Antarctic climate.

The Ocean and Cryosphere in a Changing Climate

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Publisher : Cambridge University Press
ISBN 13 : 9781009157971
Total Pages : 755 pages
Book Rating : 4.1/5 (579 download)

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Book Synopsis The Ocean and Cryosphere in a Changing Climate by : Intergovernmental Panel on Climate Change (IPCC)

Download or read book The Ocean and Cryosphere in a Changing Climate written by Intergovernmental Panel on Climate Change (IPCC) and published by Cambridge University Press. This book was released on 2022-04-30 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for assessing the science related to climate change. It provides policymakers with regular assessments of the scientific basis of human-induced climate change, its impacts and future risks, and options for adaptation and mitigation. This IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is the most comprehensive and up-to-date assessment of the observed and projected changes to the ocean and cryosphere and their associated impacts and risks, with a focus on resilience, risk management response options, and adaptation measures, considering both their potential and limitations. It brings together knowledge on physical and biogeochemical changes, the interplay with ecosystem changes, and the implications for human communities. It serves policymakers, decision makers, stakeholders, and all interested parties with unbiased, up-to-date, policy-relevant information. This title is also available as Open Access on Cambridge Core.

Antarctic Peninsula Climate Variability

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Publisher : American Geophysical Union
ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Antarctic Peninsula Climate Variability by : Eugene Domack

Download or read book Antarctic Peninsula Climate Variability written by Eugene Domack and published by American Geophysical Union. This book was released on 2003-01-10 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Antarctic Research Series, Volume 79. The Antarctic Peninsula region represents our best natural laboratory to investigate how earth's major climate systems interact and how such systems respond to rapid regional warming. The scale of environmental changes now taking place across the region is large and their pace rapid but the subsystems involved are still small enough to observe and accurately document cause and affect mechanisms. For example, clarification of ice shelf stability via the Larsen Ice Shelf is vital to understanding the entire Antarctic Ice Sheet, its climate evolution, and its response to and control of sea level. By encompassing the broadest range of interdisciplinary studies, this volume provides the global change research and educational communities a framework in which to advance our knowledge of the causes behind regional warming, the dramatic glacial and ecological responses, and the potential uniqueness of the event within the region's paleoclimate record. The volume also serves as a vital resource for public policy and governmental funding agencies as well as a means to educate the large number of ecotourists that visit the region each austral summer.

Antarctic Climate Change and the Environment

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Publisher :
ISBN 13 : 9780948277221
Total Pages : 526 pages
Book Rating : 4.2/5 (772 download)

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Book Synopsis Antarctic Climate Change and the Environment by : John Turner

Download or read book Antarctic Climate Change and the Environment written by John Turner and published by . This book was released on 2009 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Antarctica and Environmental Change

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Publisher : Clarendon Press
ISBN 13 :
Total Pages : 154 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Antarctica and Environmental Change by : D. J. Drewry

Download or read book Antarctica and Environmental Change written by D. J. Drewry and published by Clarendon Press. This book was released on 1993 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three decades of research have demonstrated the intimate interaction between the Antarctic and the major environmental systems of our world. Antarctica represents a major heat sink that is of fundamental importance in driving the global atmospheric regime. This book presents authoritative essays on the ramifications of observed environmental changes occurring in this vital region. Topics include the atmosphere; the climate record from ice cores and ocean sediments; the ice sheet and its relevance to sea level, oceans, and sea ice; rock weathering, soils and colonization; terrestrial plants and animals; marine primary production and biogeochemical cycles; krill and fish stocks; seabirds, seals, and whales. Researchers in the Earth, life, atmospheric, and ocean sciences will find this volume of immense value, as will all Antarctic specialists and environmental scientists.

Past Glacial Environments

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Publisher : Elsevier
ISBN 13 : 0081005253
Total Pages : 859 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Past Glacial Environments by : John Menzies

Download or read book Past Glacial Environments written by John Menzies and published by Elsevier. This book was released on 2017-11-28 with total page 859 pages. Available in PDF, EPUB and Kindle. Book excerpt: Past Glacial Environments, Second Edition, presents a revised and updated version of the very successful first edition of Menzies’ book, covering a breadth of topics with a focus on the recognition and analysis of former glacial environments, including the pre-Quaternary glaciations. The book is made up of chapters written by various geological experts from across the world, with the editor’s expertise and experience bringing the chapters together. This new and updated volume includes at least 45% new material, along with five new chapters that include a section on techniques and methods. Additionally, this new edition is presented in full color and features a large collection of photographs, line diagrams, and tables with examples of glacial environments and landscapes that are drawn from a worldwide perspective. Informative knowledge boxes and case studies are included, helping users better understand critical issues and ideas. Provides the most complete reference concerning the study of glacial processes and their geological, sedimentological, and geomorphological products Comprised of chapters written by various geological experts from across the world Includes specific case studies to alert readers to important ideas and issues Uses text boxes throughout to explain key concepts from glacial literature Presents full color photographs, line diagrams, and tables throughout