The Arctic and its surrounding marginal seas are considered some of the most sensitive elements of the global environment, which may respond rapidly to climate change. However, due to various reasons, our knowledge of the processes which drive the Arctic system today and in the past is still relatively sparse. Based on a multidisciplinary approach, German and Russian scientists describe in this book the natural paleorecords and modern data which were collected over the past 6 years. These marine and terrestrial datasets provide important new insights into the causes, impacts, and feedback mechanisms of this extreme Arctic environment.
The flux, preservation, and accumulation of organic carbon in marine systems are controlled by various mechanisms including primary p- duction of the surface water, supply of terrigenous organic matter from the surrounding continents, biogeochemical processes in the water column and at the seafloor, and sedimentation rate. For the world's oceans, phytoplankton productivity is by far the largest organic carbon 9 source, estimated to be about 30 to 50 Gt (10 tonnes) per year (Berger et al. 1989; Hedges and Keil 1995). By comparison, rivers contribute -1 about 0. 15 to 0. 23 Gt y of particulate organi.
Concerns about the effects of global climate change have focused attention on the vulnerability of circumpolar regions. This book offers a synthesis of the spectrum of techniques available for generating long-term environmental records from circumpolar lakes.
Although it is generally accepted that the Arctic Ocean is a very sensitive and important region for changes in the global climate, this region is the last major physiographic province of the earth whose short-and long-term geological history is much less known in comparison to other ocean regions. This lack of knowledge is mainly caused by the major technological/logistic problems in reaching this harsh, ice-covered region with normal research vessels and in retrieving long and undisturbed sediment cores. During the the last about 20 years, however, several international and multidisciplinary ship expeditions, including the first scientific drilling on Lomonosov Ridge in 2004, a break-through in Arctic research, were carried out into the central Artic and its surrounding shelf seas. Results from these expeditions have greatly advanced our knowledge on Arctic Ocean paleoenvironments. Published syntheses about the knowledge on Arctic Ocean geology, on the other hand, are based on data available prior to 1990. A comprehensive compilation of data on Arctic Ocean paleoenvironment and its short-and long-term variability based on the huge amount of new data including the ACEX drilling data, has not been available yet. With this book, presenting (1) detailed information on glacio-marine sedimentary processes and geological proxies used for paleoenvironmental reconstructions, and (2) detailed geological data on modern environments, Quaternary variability on different time scales as well as the long-term climate history during Mesozoic-Tertiary times, this gap in knowledge will be filled.*Aimed at specialists and graduates *Presents background research, recent developments, and future trends*Written by a leading scholar and industry expert
"This volume contributes to the current discussion of the role of natural and anthropogenic driving forces for coastal processes and their socioeconomic consequences. Special attention is paid to computerized tools that allow us--based on reconstruction of paleodevelopments--to predict the interference of processes on different time scales. On the one hand, the book provides an overview of the current model developments in describing vertical crustal movement, climate change forcing sea-level variations, the genesis of the basin fill along continental margins, and the interference of these processes in coastal development. On the other hand, it describes coastal development in key areas for different climate zones and geological settings. Coastline Changes is addressed to students and professionals in the geosciences, archaeology, social sciences, economy, and computer sciences. It will foster interdisciplinary discussion for the purpose of developing integrated concepts for sustainable development of the coastal zones."--Publisher's website.
This study analyzes carbon-cycle conditions controlling the state of the Arctic ecosystem and their seasonal variations. Territory covered includes the Barents, White, Kara, Laptev, East-Siberian and Chukchi Seas, considering inter-correlations between sources of organic carbon, their fluxes, recycling and burial in bottom sediments. All biological communities (phythoplankton, macrophythobenthos, microphythobentos, bacterioplankton, zooplankton and zoobenthos) are taken into account regarding their participation in the carbon cycle.
This reference book for researchers working on glacial sediments provides a complete overview of the various glacial deposits in the ocean. It presents a collection of worldwide data on glacio-marine phenomena.
Volume 1A: Principles of Geologic AnalysisA "how-to" primer describes the basic concepts petroleum geologists and students need to understand hydrocarbon exploration in a broad range of geological settings globally. Volume 1B: Phanerozoic Rift Systems and Sedimentary BasinsIncorporates industry data to present regional seismic lines and cross sections to accurately document and analyze proven hydrocarbon systems. It also includes summaries of analogue and theoretical models as an essential backdrop to the structure and stratigraphy of a variety of geological settings. Volume 1C: Phanerozoic Passive Margins, Cratonic Basins and Global Tectonic MapsFocuses on both volcanic and non-volcanic passive margins as well as cratonic basins—critical habitats for hydrocarbons. It provides a unique basis for comparison of different passive margins and for an understanding of their structural and stratigraphic evolution, as well as their petroleum systems—especially useful to explorationists working in deep-water basins and researchers examining the tectonic evolution of the continent-ocean transition. A vast amount of data to enable hydrocarbon play assessments and analysis on passive margins is also included in this thorough yet accessible reference. Individual volumes can also be purchased:978044453042497804445635699780444563576 Volume 1A discusses in detail the principles of regional geological analysis and the main geological and geophysical tools used in basin analysis Volume 1B features simple documentation and analysis of major rift systems developed in contrasting geological settings as well as in-depth analyses of active rifts in various regions all over the world for immediately implementable petroleum exploration applications Volume 1C features real-world case studies and analyses, useful summaries of analogue and theoretical models, thorough documentation of numerous passive margins that are the focus of deep water oil exploration, and unique tectonic maps facilitating access to exact basin locations and their tectonic settings A companion website offers select downloadable images from the books: http://booksite.elsevier.com/9780444530424/index.php
