Laminated Lake Sediments And Their Impact On Paleoclimatology

Author : Wojciech Tylmann,Bernd Zolitschka
Publisher : MDPI
Page : 130 pages
File Size : 49,6 Mb
Release : 2020-04-28
Category : Science
ISBN : 9783039287864

Get Book

Annually Laminated Lake Sediments by Wojciech Tylmann,Bernd Zolitschka Pdf

The collection of papers presented in this book illustrates the recent progress made in varved sediment research and highlights the large variety of methodological approaches and research directions applied. The contributions cover monitoring of modern sediment fluxes using sediment traps; geochronological and sedimentological analyses of annually laminated lacustrine sediments or varves; and multiproxy investigations, including geochemical and biological proxies as well as spatiotemporal analyses based on multicore studies supported by satellite images and X-ray computed tomography (CT). The scientific issues discuss the influences of hydrological and climatological phenomena on short-term changes in sediment flux, the relationships between biogeochemical (limnological) processes in the water column and the formation of varves, the preservation of environmental signals in varved sediments, and possibilities of synchronizing varved records with other high-resolution environmental archives such as tree rings.

Author : Alan E. S. Kemp
Publisher : Geological Society of London
Page : 278 pages
File Size : 49,5 Mb
Release : 1996
Category : Nature
ISBN : 1897799675

Get Book

Palaeoclimatology and Palaeoceanography from Laminated Sediments by Alan E. S. Kemp Pdf

The magnitude and causes of decadal to century-scale changes in climate are major issues of global concern. The separation of anthropogenically driven change from natural 'baseline' variability within the atmosphere/ocean system is a prerequisite to identifying human impact on global climate. An understanding of past climate variability is therefore a key to predicting future climate change. The sedimentary record of the oceans, seas and lakes is produced by a series of depositional events that occur on seasonal timescales but can rarely be resolved due to mixing of the sediment by bottomdwelling organisms. Where they are preserved, laminated sediments act like tree rings to record these seasonal-scale processes, such as plankton blooms and floods, and provide a uniquely high-resolution record of environmental change. In addition, annually laminated or 'varved' sediment sequences act as geochronometers against which other timescales can be tested. Laminated sediments may therefore be used to develop records of interannual and decadal-scale variability which serve to test models of climate change. The authors cover a range of topics that include strategies for study and techniques of analysis. A series of case studies, dealing with a variety of lacustrine and marine records, illustrates the wide potential of laminated sediments as palaeoclimatic and palaeoceanographic indicators.

Author : Bernd Zolitschka,Wojciech Tylmann
Publisher : Unknown
Page : 130 pages
File Size : 53,8 Mb
Release : 2020
Category : Environmental sciences
ISBN : 3039287877

Get Book

Annually Laminated Lake Sediments by Bernd Zolitschka,Wojciech Tylmann Pdf

The collection of papers presented in this book illustrates the recent progress made in varved sediment research and highlights the large variety of methodological approaches and research directions applied. The contributions cover monitoring of modern sediment fluxes using sediment traps; geochronological and sedimentological analyses of annually laminated lacustrine sediments or varves; and multiproxy investigations, including geochemical and biological proxies as well as spatiotemporal analyses based on multicore studies supported by satellite images and X-ray computed tomography (CT). The scientific issues discuss the influences of hydrological and climatological phenomena on short-term changes in sediment flux, the relationships between biogeochemical (limnological) processes in the water column and the formation of varves, the preservation of environmental signals in varved sediments, and possibilities of synchronizing varved records with other high-resolution environmental archives such as tree rings.

Author : Vivien Gornitz
Publisher : Springer Science & Business Media
Page : 1062 pages
File Size : 53,8 Mb
Release : 2008-10-31
Category : Science
ISBN : 9781402045516

Get Book

Encyclopedia of Paleoclimatology and Ancient Environments by Vivien Gornitz Pdf

One of Springer’s Major Reference Works, this book gives the reader a truly global perspective. It is the first major reference work in its field. Paleoclimate topics covered in the encyclopedia give the reader the capability to place the observations of recent global warming in the context of longer-term natural climate fluctuations. Significant elements of the encyclopedia include recent developments in paleoclimate modeling, paleo-ocean circulation, as well as the influence of geological processes and biological feedbacks on global climate change. The encyclopedia gives the reader an entry point into the literature on these and many other groundbreaking topics.

Author : William M. Last,John P. Smol
Publisher : Springer Science & Business Media
Page : 532 pages
File Size : 50,5 Mb
Release : 2006-04-11
Category : Science
ISBN : 9780306476709

Get Book

Tracking Environmental Change Using Lake Sediments by William M. Last,John P. Smol Pdf

Theory Instrumentation NIR analysis of sediment samples Uses of NIRS in palaeolimnology Future perspectives Summary References Fly-ash particles. Neil Rose 319 12. Introduction A brief history Methods of extraction and enumeration Temporal distribution Spatial distribution Source apportionment The future Summary Acknowledgements References Part III: Stable Isotope Techniques 13. Application of stable isotope techniques to inorganic and biogenic carbonates. Emi Ito 351 Introduction Nomenclature and systematics of lake-water Mg/Ca and Sr/Ca ratios of lake-water of dissolved inorganic carbon (DIC) Carbonates in lake-sediments Mollusks Ostracodes Charaphytes Isotope analysis Preparation of carbonate samples for isotope analysis Conclusions Summary Acknowledgments References 14. Carbon and oxygen isotope analysis of lake sediment cellulose: methods and applications. Brent B. Wolfe, Thomas W. D. Edwards, Richard J. Elgood & Kristina R. M. Beuning 373 xi Introduction Stable isotope tracers in lake Historical development Methods Key criteria for paleohydrologic reconstruction Applications Future research directions Summary Acknowledgements References Nitrogen isotopes in palaeolimnology. Michael R. Talbot 15. 401 Introduction Nitrogen in lakes: forms and distribution Nitrogen isotopes Nitrogen isotope studies in palaeolimnology: sampling and measurement Some examples Closing remarks Summary Acknowledgments References Glossary, acronyms and abbreviations 441 Index 493 xiii PREFACE The explosive growth of paleolimnology over the past two decades has provided impetus for the publication of this series of monographs detailing the numerous advances and new techniques being applied to the interpretation of lake histories. This is the second volume in the series and deals mainly with physical and geochemical analytical techniques.

Author : Thomas C Johnson,Eric O Odada
Publisher : Routledge
Page : 679 pages
File Size : 54,8 Mb
Release : 2019-08-13
Category : Science
ISBN : 9781351435321

Get Book

Limnology, Climatology and Paleoclimatology of the East African Lakes by Thomas C Johnson,Eric O Odada Pdf

The large lakes of the East African Rift Valley are among the oldest on Earth, and are vital resources for the people of their basins. They are unique among the large lakes of the world in terms of their sensitivity to climatic change, rich and diverse populations of endemic species, circulation dynamics and water-column chemistry, and long, continuous records of past climatic change. A comprehensive study of the large African lakes is long overdue. The scientific justification for such an effort is noted in the previous paragraph and is illustrated in great detail in this volume. Societal need for the sustainable utilization of these lakes offers an even more compelling reason for examination of biological food webs, water quality, and past climate variability in East Africa. The lakes provide the most important source of protein for the people of the African Rift Valley, and fish populations are shifting dramatically in response to fishing pressure, introduction of exotic species, land use impact on water quality, and perhaps climatic change. Current estimates of primary productivity, the underpinning of the food resource, are extremely crude and based on only a few spot measurements.

Author : A.Ivan Johnson
Publisher : Routledge
Page : 682 pages
File Size : 48,9 Mb
Release : 2019-08-13
Category : Science
ISBN : 9781351435314

Get Book

Limnology, Climatology and Paleoclimatology of the East African Lakes by A.Ivan Johnson Pdf

The large lakes of the East African Rift Valley are among the oldest on Earth, and are vital resources for the people of their basins. They are unique among the large lakes of the world in terms of their sensitivity to climatic change, rich and diverse populations of endemic species, circulation dynamics and water-column chemistry, and long, continuous records of past climatic change. A comprehensive study of the large African lakes is long overdue. The scientific justification for such an effort is noted in the previous paragraph and is illustrated in great detail in this volume. Societal need for the sustainable utilization of these lakes offers an even more compelling reason for examination of biological food webs, water quality, and past climate variability in East Africa. The lakes provide the most important source of protein for the people of the African Rift Valley, and fish populations are shifting dramatically in response to fishing pressure, introduction of exotic species, land use impact on water quality, and perhaps climatic change. Current estimates of primary productivity, the underpinning of the food resource, are extremely crude and based on only a few spot measurements.

Author : Andrew S. Cohen
Publisher : Oxford University Press
Page : 540 pages
File Size : 48,8 Mb
Release : 2003-05-29
Category : Science
ISBN : 0195350898

Get Book

Paleolimnology by Andrew S. Cohen Pdf

This text, written by a leading researcher in the field, describes the origin and formation of lakes in order to give context to the question of how lacustrine deposits form. It explains the process of sedimentation in lakes and the chemistry of those deposits and describes how the age of lake deposits are determined. Additionally, this book shows how different groups of fossils are used in interpreting the paleontological record of lakes. In order to illustrate the more synthetic approaches to interpreting the history of lakes, the author also discusses such special topics as lake-level history, lake evolution, and the impact of environmental change on lakes.

Author : United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Oversight and Investigations
Publisher : Unknown
Page : 880 pages
File Size : 54,6 Mb
Release : 2006
Category : Science
ISBN : STANFORD:36105064034411

Get Book

Questions Surrounding the 'hockey Stick' Temperature Studies by United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Oversight and Investigations Pdf

Author : Ian W. Croudace,R. Guy Rothwell
Publisher : Springer
Page : 656 pages
File Size : 43,8 Mb
Release : 2015-07-21
Category : Science
ISBN : 9789401798495

Get Book

Micro-XRF Studies of Sediment Cores by Ian W. Croudace,R. Guy Rothwell Pdf

This volume presents papers on the use of micro-XRF core scanners in palaeoenvironmental research. It contains a broad ranging view of instrument capability and points to future developments that will help contribute to higher precision elemental data and faster core analysis. Readers will find a diverse range of research by leading experts that have used micro-XRF core scanners in a wide range of scientific applications. The book includes specific application papers reporting on the use of XRF core scanners in a variety of marine, lacustrine, and pollution studies. In addition, coverage also examines practical aspects of core scanner usage, data optimisation and data calibration and interpretation. In a little over a decade, micro-XRF sediment core scanners have made a substantive contribution to palaeoenvironmental research. Their impact is based on their ability to rapidly, non-destructively and automatically scan sediment cores. Not only do they rapidly provide important proxy data without damaging samples, but they can obtain environmental data at decadal, annual and even sub-annual scales. This volume will help both experienced and new users of these non-destructive core scanners take full advantage of one of the most powerful geochemical screening tools in the environmental scientist's toolbox.

Author : Raymond S. Bradley
Publisher : Academic Press
Page : 696 pages
File Size : 44,8 Mb
Release : 2013-12-28
Category : Science
ISBN : 9780123869951

Get Book

Paleoclimatology by Raymond S. Bradley Pdf

Paleoclimatology: Reconstructing Climates of the Quaternary, Third Edition—winner of a 2015 Textbook Excellence Award (Texty) from The Text and Academic Authors Association—provides a thorough overview of the methods of paleoclimatic reconstruction and of the historical changes in climate during the past three million years. This thoroughly updated and revised edition systematically examines each type of proxy and elucidates the major attributes and the limitations of each. Paleoclimatology, Third Edition provides necessary context for those interested in understanding climate changes at present and how current trends in climate compare with changes that have occurred in the past. The text is richly illustrated and includes an extensive bibliography for further research. Winner of a 2015 Texty Award from the Text and Academic Authors Association A comprehensive overview of the methods of paleoclimate reconstruction, and the record of past changes in climate during the last ~3 million years Addresses all the techniques used in paleoclimatic reconstruction from climate proxies With full-color throughout, and thoroughly revised chapters on dating methods, climate forcing, ice cores, marine sediments, pollen analysis, dendroclimatology, and historical records Includes new chapters on speleothems, loess, and lake sediments More than 1,000 new references and 190 new figures Essential reading for those interested in how present trends in climate compare with changes that have occurred in the past

Author : John Birks,Rick Battarbee,Anson Mackay,Frank Oldfield
Publisher : Routledge
Page : 556 pages
File Size : 47,6 Mb
Release : 2014-02-24
Category : Science
ISBN : 9781444119176

Get Book

Global Change in the Holocene by John Birks,Rick Battarbee,Anson Mackay,Frank Oldfield Pdf

The Holocene spans the 11,500 years since the end of the last Ice Age and has been a period of major global environmental change. However the rate of change has accelerated during the last hundred years, due largely to human impacts and this has led to a growing concern for the future of our environmental resources. Global Change in the Holocene demonstrates how reconstructing the record of past environmental change can provide us with essential knowledge about how our environment works and presents the reader with an informed viewpoint from which to project realistic future scenarios. The book brings together key techniques that are widely used in Holocene research, such as radiocarbon dating, dendrochronology and sediment analysis and offers a comprehensive analysis of various archives of environmental change including instrumental and documentary records, corals, lake sediments, glaciers and ice cores. This reference will be an informative and cutting-edge resource for all researchers in the fields of climate change, environmental science, geography, palaeoecology and archaeology.

Author : Roger Yates Anderson,Geological Survey (U.S.)
Publisher : Unknown
Page : 28 pages
File Size : 52,8 Mb
Release : 1985
Category : Geology
ISBN : OSU:32435062558200

Get Book

Meromictic Lakes and Varved Lake Sediments in North America by Roger Yates Anderson,Geological Survey (U.S.) Pdf

Lakes in North America that are meromictic or that contain sediments with annual layers are assessed for their potential for reconstruction of ancient climates.

Author : Thomas M. Cronin
Publisher : Columbia University Press
Page : 582 pages
File Size : 44,5 Mb
Release : 1999-07-27
Category : Science
ISBN : 0231503040

Get Book

Principles of Paleoclimatology by Thomas M. Cronin Pdf

Greenhouse gases, global warming, thinning ozone layers—understanding the Earth's climatic changes is one of today's most pressing international concerns. How fast has the climate changed? Where and why is it changing? What is the impact of climate change on our ecosystems, coastal regions, glaciers, forests, and lakes, and even on the evolution of our own species? This introduction to the rapidly emerging field of paleoclimatology explains the patterns and processes in the history of the Earth's climate to answer such essential questions. Using the geologic records of ocean and lake sediment, ice cores, corals, and other natural archives, Principles of Paleoclimatology describes the history of the Earth's climate—the ice age cycles, sea level changes, volcanic activity, changes in atmosphere and solar radiation—and the resulting, sometimes catastrophic, biotic responses. These paleoclimate records provide a baseline against which we can compare modern climate trends. Designed to give a fundamental background—including both history and methodology—to the discipline of paleoclimatology, this book is the first to advance our understanding of how climate change develops, how those changes are detected, and how the climate of the past can shape the climate of the future.

Author : Ge Yu
Publisher : Unknown
Page : 464 pages
File Size : 46,9 Mb
Release : 1995
Category : Lakes
ISBN : UCR:31210025047174

Get Book

Lake Status Records from Europe by Ge Yu Pdf