Author: George Irving Smith
Publisher:
ISBN:
Category : Drill cores
Languages : en
Pages : 460

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Book Description

Author: George I. Smith
Publisher: Geological Society of America
ISBN: 0813723175
Category : Science
Languages : en
Pages : 175

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Book Description

Author: Kirsten Margaret Menking
Publisher:
ISBN:
Category : Paleoclimatology
Languages : en
Pages : 420

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Book Description
In 1992, the U.S. Geological Survey cored Owens Lake to obtain a continuous paleoclimate record for the Sierra Nevada region. Owens Lake heads a chain of closed-basin lakes which are separated by a series of bedrock sills, received their water primarily from Sierra Nevadan precipitation, and overflowed during wet periods. The core records the histories of cyclic glaciation of the Sierra Nevada and water-balance of Owens Lake over the past 800 kyrs. A variety of paleoclimatic proxies have been studied, details of which may be found in Smith and Bischoff (1993). In this thesis, I report the results and interpretations of 1) grain-size and clay-mineralogical analyses performed on 3.5-m-long channel samples (%7500 years of sedimentation per sample) and point samples, 2) grain size, carbonate content, and oxygen isotopic measurements on 70-cm-long channel samples (%1500 years), and 3) a water-balance model used to infer the magnitude of runoff and evaporation changes necessary to fill the lakes in the Owens Lake system, and to determine the response time of the lake chain to climatic perturbations.

Author:
Publisher:
ISBN:
Category : Climatic changes
Languages : en
Pages : 186

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Author: Jill Schneiderman
Publisher: Routledge
ISBN: 0429965206
Category : Social Science
Languages : en
Pages : 478

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Book Description
Soil contamination . . . public lands . . . surface and groundwater pollution . . . coastal erosion . . . global warming. Have we reached the limits of this planet's ability to provide for us? If so, what can we do about it?These vital questions are addressed in The Earth Around Us, a unique collection of thirty-one essays by a diverse array of today's foremost scientist-writers. Sharing an ability to communicate science in a clear and engaging fashion, the contributors explore Earth's history and processes--especially in relation to today's environmental issues--and show how we, as members of a global community, can help maintain a livable planet. The narratives in this collection are organized into seven parts that describe: Earth's time and history and the place of people on it Views of nature and the ethics behind our conduct on Earth Resources for the twenty-first century, such as public lands, healthy forests and soils, clean ground and surface waters, and fluctuating coastlines Ill-informed local manipulations of landscapes across the United States Innovative solutions to environmental problems that arise from knowledge of the interactions between living things and the Earth's air, water, and soil Natural and human-induced global scale perturbations to the earth system Our responsibility to people and all other organisms that live on Earth. Never before has such a widely experienced group of prominent earth scientists been brought together to help readers understand how earth's environment works. Driven by the belief that earth science is, and should be, an integral part of everyday life, The Earth Around Us empowers all of us to play a more educated and active part in the search for a sustainable future for our planet and its inhabitants.

Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1100

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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1096

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Book Description

Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 428

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Book Description

Author: Colin E. Thorn
Publisher: Bruce Rhoads
ISBN:
Category : Geomorphology
Languages : en
Pages : 490

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Book Description

Author: Donald Grayson
Publisher: Univ of California Press
ISBN: 0520948718
Category : Nature
Languages : en
Pages : 433

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Book Description
Covering a large swath of the American West, the Great Basin, centered in Nevada and including parts of California, Utah, and Oregon, is named for the unusual fact that none of its rivers or streams flow into the sea. This fascinating illustrated journey through deep time is the definitive environmental and human history of this beautiful and little traveled region, home to Death Valley, the Great Salt Lake, Lake Tahoe, and the Bonneville Salt Flats. Donald K. Grayson synthesizes what we now know about the past 25,000 years in the Great Basin—its climate, lakes, glaciers, plants, animals, and peoples—based on information gleaned from the region’s exquisite natural archives in such repositories as lake cores, packrat middens, tree rings, and archaeological sites. A perfect guide for students, scholars, travelers, and general readers alike, the book weaves together history, archaeology, botany, geology, biogeography, and other disciplines into one compelling panorama across a truly unique American landscape.