Wissenschaftliche Bücher

Jürgen Ehlers, Philip Hughes, Philip Gibbard - The Ice Age
ISBN-13: 978-1-118-50781-0, 548 Seiten
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Jürgen Ehlers
The Ice Age

This book provides a new look at the climatic history of the last 2.6 million years during the ice age, a time of extreme climatic fluctuations that have not yet ended. This period also coincides with important phases of human development from Neanderthals to modern humans, both of whom existed side by side during the last cold stage of the ice age. The ice age has seen dramatic expansions of glaciers and ice sheets, although this has been interspersed with relatively short warmer intervals like the one we live in today. The book focuses on the changing state of these glaciers and the effects of associated climate changes on a wide variety of environments (including mountains, rivers, deserts, oceans and seas) and also plants and animals. For example, at times the Sahara was green and colonized by humans, and Lake Chad covered 350,000 km2 - larger than the United Kingdom. What happened during the ice age can only be reconstructed from the traces that are left in the ground. The work of the geoscientist is similar to that of a detective who has to reconstruct the sequence of events from circumstantial evidence. The book draws on the specialisms and experience of the authors who are experts on the glacial history of the Earth.

Readership Undergraduate and postgraduate students studying the Quaternary, researchers, and anyone interested in climate change, environmental change and geology. The book provides a rich collection of illustrations and photographs to help the readers at all levels visualise the dramatic consequences of glacier expansions during the Ice Age.

Jürgen Ehlers - The Morphodynamics of the Wadden Sea
ISBN-13: 978-9061916796, 397 Seiten
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Jürgen Ehlers
The Morphodynamics of the Wadden Sea

The Wadden Sea area of the North Sea is one which undergoes rapid morphological changes. Under natural conditions, the barrier islands would adjust themselves to a rising sea level. However, because the islands are densely populated and have an important role as holiday resorts, morphological changes are undesirable. Coastal engineering countermeasures have been undertaken to prevent beach erosion, shifting of tidal inlets, breaching of dune ridges and landward-directed washover. The natural processes and the results of human interference including the negative consequences of many of the measures are discussed in detail. The author presents the current state of research, together with the results of his own investigations. In addition, a comprehensive description of the geomorphological development and recent problems of the barrier islands from Texel to Fanø is given for
the first time. The book includes 40 colour photographs and 393 figures, almost all previously unpublished. Satellite and radar imagery as well as many aerial photographs are also included. The book is intended for geomorphologists, sedimentologists, environmentalists and all those with a scientific interest in tidal flats and barrier islands.

Jürgen Ehlers - Glacial Deposits in North-West Europe
ISBN-13: 978-9061912231, 512 Seiten
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Jürgen Ehlers (ed.)
Glacial Deposits in North-West Europe

The importance of glacial deposits is continually increasing, not only for pure scientists, but also for applied geologists. In many parts of Europe, as well as North America, these deposits provide major sand and gravel reserves, groundwater reservoirs and the foundation on which houses, roads and bridges are built. They are thus fundamental to many environmental and engineering problems. In this volume forty six authors report on the cur-rent state of specialist research on various aspects of glacial deposits. The geographical coverage of their work — Norway, Sweden, Denmark, West Germany and the Netherlands — represents a transect from the centres of the major North European Quaternary glaciations to their margins. Among the topics covered are: drift prospecting, modern varve chronology, fine gravel analysis, internal structure of thrust moraines, stratigraphical interpretation of well-logs, echo-sounding of North Sea deposits, erratic pebbles as indicators, till fabrics, palaeontology of glacial deposits, multi-component analyses, glacial deposition on the continental shelf and the genetic interpretation of glacial landforms. In addition there are reviews of the regional stratigraphy and glacial chronology of each of the five countries represented and detailed discussion of the problems of genesis, reworking, transport and deposition of Quaternary glacial sediments. Much information is previously unpublished. The volume is intended to serve both as a text book for students and informed amateurs and as a guide for professional geoscientists. The 53 chapters are richly illustrated (409 black and white illustrations and 95 colour photos). In addition to a full and detailed index, the book contains one of the most up-to-date and complete lists of the most important literature on Quaternary problems in North-West Europe, with over 700 references, which serve as a guide for further studies.

Jürgen Ehlers - Glacial Deposits in Great Britain and Ireland
ISBN-13: 978-9061912231, 512 Seiten
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J. Ehlers, P.L. Gibbard & J. Rose (eds)
Glacial Deposits in Great Britain and Ireland

With the increasing awareness of environmental problems, there is a growing desire for a detailed understanding of superficial deposits in general, and glacial deposits in particular. This is because these sediments have a profound influence on groundwater protection, waste management and nature conservation. They are also of vital importance to civil engineering, because they provide the foundation for, as well as the materials extracted to build our roads and buildings. The greater part of the British Isles was glaciated, at least once, during the Quaternary Era. In the regions subjected to glaciation, glacial deposits underlie much of the present land surface.
Although there have been many recent publications on various Quaternary geological topics, the present volume is the first dedicated to a detailed assessment of the glacial deposits of Britain and Ireland. After introductory chapters presenting the glacial history, the sedimentary sequences in 24 critical regions are discussed. These regions include all of Ireland, the glaciated area of Great Britain, and the adjoining offshore region of the North Sea. The controversial evolution of the Irish Sea Basin during the Last Glaciation is discussed from various viewpoints. A collection of 'critical topics' presented in the later part of the book range from the classification of glacigenic landforms and deposits to the results of geophysical, geotechnical and geochemical analyses.
The book includes 368 figures, 40 tables and 51 colour photographs, a detailed index and a list of over 1000 references. With 45 contributions by 48 scientists, this volume represents a truly contemporary view of this field of research. Together with its companion volume the Glacial deposits in North-West Europe, this book provides an excellent textbook for the advanced student or the amateur, as well as an indispensible source- and guidebook for the professional scientist.

Jürgen Ehlers - Glacial Deposits in North-East Europe
ISBN-13: 978-9054101895, 626 Seiten
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J. Ehlers, P.L. Gibbard & S. Kozarski (eds)
Glacial Deposits in North-East Europe

Until now no overview of the Quaternary deposits of northeastern Europe has been available. This book fills the gap. It presents the state of research on Quaternary stratigraphy and geology, with emphasis on glacial deposits, discusses the general scientific ideas and gives an overview of the methods of investigation, some of which have rarely been applied elsewhere. It has become apparent that the region covered has many environmental problems, and a proper understanding of the Quaternary deposits is a basic requirement for dealing with them. The same is true for civil engineering. In the formerly glaciated areas almost all construction sites for roads and houses will encounter glacial deposits. This volume provides an authoritative and fascinating overview for anyone planning to venture into this field.
In its 53 regional chapters the book covers Finland, Estonia, Latvia, Lithuania, Russia, Ukraine, Belarus, Poland, the Czech Republic and eastern Germany. From the text it becomes clear that not all the stratigraphical schemes are yet fully compatible or comprehensible. There can be no doubt, however, that the east was subjected to very extensive ice advances during the earlier Pleistocene. Also, in contrast to western Europe, there was a significant Early Weichselian ice advance, although not as extensive as the last, Late Weichselian event.
The book is illustrated by 421 figures and 74 colour plates (mostly photographs). There are 23 tables, a detailed index and a list of over 1000 references, providing a unique collection of northeastern European geoscience literature, much of which has so far escaped the attention of western scientists. The volume, composed of contributions by 60 scientists, completes the trilogy on glacial deposits of northern Europe. Together with its two companion volumes, the Glacial deposits in North-West Europe and the Glacial Deposits in Great Britain and Ireland, it represents an invaluable source of information for the geoscientist, the advanced student or the amateur.

Jürgen Ehlers - Quaternary Glaciations - Extent and Chronology: A Closer Look
ISBN-13: 978-0444534477, 1108 Seiten
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J. Ehlers, P.L. Gibbard & P.D. Hughes (eds)
Quaternary Glaciations - Extent and Chronology: A Closer Look

The book presents an up-to-date, detailed overview of the Quaternary glaciations all over the world, not only with regard to stratigraphy but also with regard to major glacial landforms and the extent of the respective ice sheets. The locations of key sites are included. The information is presented in digital, uniformly prepared maps which can be used in a Geographical Information System (GIS) such as ArcView or ArcGIS. The accompanying text supplies the information on how the data were obtained (geomorphology, geological mapping, air photograph evaluation, satellite imagery), how the features were dated (14C, TL, relative stratigraphy) and how reliable they are supposed to be. All references to the underlying basic publications are included. Where controversial interpretations are possible e.g. in Siberia or Tibet, this is pointed out. As a result, the information on Quaternary glaciations worldwide will be much improved and supplied in a uniform digital format.

The information on the glacial limits is compiled in digital form by the coordinators of the project. It is completely updated detailed coverage of worldwide Quaternary glaciations. It offers information in digital, uniformly prepared maps which can be used in a GIS such as ArcView or ArcGis. It provides step-by-step guideline how to open and use ArcGis files. It is possible to convert the shapefiles into GoogleEarth kmz-files. It includes availability of chronological controls.

Jürgen Ehlers - Das Eiszeitalter
ISBN-13: 978-3827423269, 367 Seiten
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Jürgen Ehlers
Das Eiszeitalter

Das Eiszeitalter ist eine Zeit extremer Klimaschwankungen, die bis heute nicht beendet sind. Zeitweilig bedeckten gewaltige Inlandeismassen große Teile der Nordkontinente. Zu anderen Zeiten war die Sahara grün und von Menschen besiedelt, und der Tschadsee war so groß wie die Bundesrepublik Deutschland. Was sich im Eiszeitalter abgespielt hat, kann nur aus Spuren rekonstruiert werden, die im Boden zurückgeblieben sind. Die Eiszeit hat andere Schichten hinterlassen als andere Erdzeitalter. Dieses Buch beschreibt die Prozesse, unter denen sie gebildet worden sind und die Methoden, mit denen man sie untersuchen kann. Die Arbeit des Geowissenschaftlers gleicht der eines Detektivs, der aus Indizien den Ablauf des Geschehens rekonstruieren muss. Und diese Tätigkeit ist genauso spannend wie die eines Detektivs. Von den in diesem Buch vorgestellten Untersuchungsergebnissen werden einige hier zum ersten Mal veröffentlicht. Das Eiszeitalter ist auch der Zeitabschnitt, in dem der Mensch in die Gestaltung der Erde eingreift. Welche Veränderungen das mit sich bringt, kann jeder selbst verfolgen. Alle relevanten Daten sind frei verfügbar; dieses Buch beschreibt, wie man sie erhält.