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Author: John H. Mercer
Publisher:
ISBN:
Category : Glaciers
Languages : en
Pages : 413
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Book Description
Author: John H. Mercer
Publisher:
ISBN:
Category : Glaciers
Languages : en
Pages : 413
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Book Description
Author: Donald Buermann Lawrence
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 126
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Book Description
Author: Christoph Schneider
Publisher: Frontiers Media SA
ISBN: 2889637581
Category :
Languages : en
Pages : 171
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Book Description
Author: Malyssa Kay Maurer
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Documenting past climate dynamics aids in our understanding of the climate system. In order to assess future climate change it is valuable to examine the connectivity of climatic phenomena between hemispheres. Although studies that estimate past climate fluctuations are common in the Northern Hemisphere, fewer well-constrained glacier chronologies exist in the Southern Hemisphere. The assessment of past glacier activity remains the most direct method of creating a climatic record for a region, and the comparison of these glacial chronologies tests the synchronicity of climatic change between regions. This study investigates inter-hemispheric synchronicity by developing a detailed glacier history in southern Patagonia for comparison to robust glacier chronologies from the northwestern North America. Five Neoglacial advances of Stoppani Glacier in the Cordillera Darwin of southern Patagonia broadly correspond to the Neoglacial activity documented in northwestern North America. This Stoppani Glacier chronology is based on radiocarbon-dated detrital and in situ plant material contained within the northeastern lateral moraine stratigraphy. The age range from dated plant material records the first Neoglacial expansion of Stoppani Glacier which, overlaps with the end of the 4.2 ka Advance' reported throughout northwestern North America. Stoppani Glacier advanced multiple times between 3500-1900 cal yr BP which overlaps with the 'Peyto-Tiedemann Advance' documented in northwestern North America. The lacustrine record from nearby Lago Roca also suggests that local sea level lowered during the 3500-1900 cal yr BP period, resulting in the isolation of the lake from the Beagle Channel ca. 2300 cal yr BP. Plant material from within till at Stoppani Glacier and lacustrine sediments from Lago Roca yield an age range for the last advance of glaciers in the Cordillera Darwin the range coincides with the end of the wide-spread Little Ice Age Advance' documented throughout northwestern North.
Author: John H. Mercer
Publisher:
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 6
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Book Description
Author: Gino Casassa
Publisher: Springer Science & Business Media
ISBN: 146150645X
Category : Science
Languages : en
Pages : 202
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Book Description
The majesty of the icefields is beyond description. He who has been fortunate to be there once, remains bound forever. To a theoretical physicist working on black holes the icefields produce a familiar vertigo, the instinctive certainty of being confronted with something so simple and beautifully extreme that it must be of importance. The meeting whose proceedings are contained in this volume was conducted onboard of a vessel that went to the icefields, and the participants could literally set foot on them. It was expected that, for those who had not been there before, this would constitute a ritual of initiation. And so it did. For this reason we like to refer to the meeting as an expedition because, although it did not have the hardship, it had the spirit. After this foundational expedition there have been two others, this time both with spirit and hardship, one from Chile and one from Argentina. At the moment of this writing, a fourth, full-fledged airborne expedition to the icefields is about to depart from Valdivia. Many of the people of many nations who were on board of the Aquiles will take part in it. We look forward to its results, and to an ongoing exciting scientific adventure. Claudio Teitelboim Director, Centro de Estudios Cientfficos Valdivia, September 2001 v ACKNOWLEDGMENTS This volume is the result of the effort and generosity of many people and institutions.
Author: John H. Mercer
Publisher:
ISBN:
Category : Glaciers
Languages : en
Pages : 366
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Book Description
Results of literature survey of knowledge on mountain glaciers in six regions of southern hemisphere: Andes of South America (Ecuador, Peru, Bolivia, Chile, Argentina), New Guinea, East Africa, Subantarctic Islands, New Zealand, and Antarctica. Includes discussions on distribution, extent, characteristics, and behavior of mountain glaciers as well as map and list of references for each regional discussion.
Author: J. Rabassa
Publisher: Elsevier
ISBN: 0080558895
Category : Science
Languages : en
Pages : 523
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Book Description
Written by highly qualified Argentine scientists and scholars, this book focuses on the uninterrupted geological and paleontological record of Patagonia and Tierra del Fuego since the Miocene-Pliocene boundary to the arrival of man and modern times. This region is an outstanding area for research, with significant interest at the international level. It provides an updated overview of the scientific work in all related fields with a strong paleoclimatic approach. Patagonia has also been a sort of a "paleoclimatic bridge" between the Antarctic Peninsula and the more northerly land masses, since the final opening of the Drake Passage in the middle Miocene. Timely and comprehensive, The Late Cenozoic of Patagonia and Tierra del Fuego is the only monograph book written in English. * One-stop resource for paleontological information of the Late Cenozoic of Patagonia * Covers 5 million years in the uninterrupted history of Patagonia and Tierra del Fuego * Comprehensive coverage of the region written by highly qualified Argentine scientists and scholars
Author: Richard S. Williams (Jr.)
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 244
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Book Description
Author: J. Ehlers
Publisher: Elsevier
ISBN: 008047408X
Category : Science
Languages : en
Pages : 390
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Book Description
This book is the last of three volumes in which the recent knowledge of the extent and chronology of Quaternary glaciations has been compiled on a global scale. This information is seen as a fundamental requirement, not only for the glacial community, but for the wider user-community of general Quaternary workers. In particular the need for accurate ice-front positions is a basic requirement for the rapidly growing field of palaeoclimate modelling. In order to provide the information for the widest-possible range of users in the most accessible form, a series of digital maps was prepared. The glacial limits were mapped in ArcView, the Geographical Information System (GIS) used by the work group. Included with the publication is a CD with digital maps, showing glacial limits, end moraines, ice-dammed lakes, glacier-induced drainage diversions and the locations of key sections through which the glacial limits are defined and dated. Where controversial interpretations are possible, such as for High Asia, they are indicated. All information on Quaternary glaciations worldwide is presented for the first time in a uniform format, including the mountain glaciations of regions such as Costa Rica, Ethiopia or Taiwan. The digital maps in this volume cover Latin America, Asia, Africa, Australasia, Antarctica. Both overview maps and more detailed maps at a scale 1: 1,000,000 are provided. Also available: Part I: Europe, ISBN 0-444-51462-7 Part II: North America, ISBN 0-444-51592-5
