Arctic Ocean Sediments Processes Proxies and Paleoenvironment

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

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  • Author : R. Stein
  • Publisher : Elsevier
  • Pages : 608 pages
  • ISBN : 9780080558851
  • Rating : 4/5 from 21 reviews
CLICK HERE TO GET THIS BOOKArctic Ocean Sediments Processes Proxies and Paleoenvironment

Arctic Ocean Sediments: Processes, Proxies, and Paleoenvironment

Arctic Ocean Sediments: Processes, Proxies, and Paleoenvironment
  • Author : R. Stein
  • Publisher : Elsevier
  • Release : 22 July 2008
GET THIS BOOKArctic Ocean Sediments: Processes, Proxies, and Paleoenvironment

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

Glacial-Marine Sedimentation

Glacial-Marine Sedimentation
  • Author : Bruce F. Molnia
  • Publisher : Springer Science & Business Media
  • Release : 06 December 2012
GET THIS BOOKGlacial-Marine Sedimentation

This volume of 18 papers describes the glacial-marine sedimentary environment in a variety of temporal and spatial settings. The volume's primary emphasis is the characteri zation of Quaternary glacial-marine sedimentation to show (1) the significant differences that exist between glacial marine environments in different geographic settings and (2) their resulting glacial-marine deposits and facies. Addi tionally, papers describing ancient glacial-marine environ ments are also presented to illustrate lithified analogs of the Quaternary deposits. With the Doctrine of Uniformitarianism in mind (the present is

The Organic Carbon Cycle in the Arctic Ocean

The Organic Carbon Cycle in the Arctic Ocean
  • Author : Rüdiger Stein,Robie W. Macdonald
  • Publisher : Springer Science & Business Media
  • Release : 27 June 2011
GET THIS BOOKThe Organic Carbon Cycle in the Arctic Ocean

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

G.

G.
  • Author : Kathleen Ann Gannon
  • Publisher : Unknown Publisher
  • Release : 30 November 2021
GET THIS BOOKG.

"Offshore oil development in Arctic Alaska is expanding. Since biodegradation is a major removal mechanism of petroleum hydrocarbons from the environment, baseline data on microorganisms present are important. I estimated microbial populations and their degradation activities in Arctic Ocean sediments, and examined how sediment affects phenanthrene bioavalability. Populations of hydrocarbon degraders were significantly higher in sediments from near Prudhoe Bay than near Barrow. However, microbial counts from Prudhoe Bay were similar to those measured in the 1970s suggesting that the

Strontium Isotopic Composition in Arctic Pleistocene and Pliocene Marine Sediments

Strontium Isotopic Composition in Arctic Pleistocene and Pliocene Marine Sediments
  • Author : Scott Lehman,Woods hole oceanographic institution ma Dept. of geology and geophysics
  • Publisher : Unknown Publisher
  • Release : 30 November 1997
GET THIS BOOKStrontium Isotopic Composition in Arctic Pleistocene and Pliocene Marine Sediments

The primary goal of the research was to use 87Sr/86Sr as a geochronometer in Arctic Ocean sediments. This attempt was unsuccessful because the analytical precision of the analysis (+/-0.000010) was insufficient to differentiate the expected change in oceanic 87Sr/86Sr. New data published after the submission of this proposal indicated that the change was on 0.000025, half that of previously published data. However, a study of the strontium isotopic composition of foraminifera from the Arctic implied that there is enrichment

Paleoclimatic Characterization of Arctic Ocean Sediments Around the Northwind Ridge Using X-ray Fluorescence and Visible-near Infrared Spectroscopy

Paleoclimatic Characterization of Arctic Ocean Sediments Around the Northwind Ridge Using X-ray Fluorescence and Visible-near Infrared Spectroscopy
  • Author : Chandawimal H. E. R. Siriwardana
  • Publisher : Unknown Publisher
  • Release : 30 November 2021
GET THIS BOOKPaleoclimatic Characterization of Arctic Ocean Sediments Around the Northwind Ridge Using X-ray Fluorescence and Visible-near Infrared Spectroscopy

The Arctic Ocean sediment (AOS) is highly sensitive to global climate changes and has become a focus of much paleoclimatic research. In this study, paleoclimatic characteristics of the AOS have been studied using downcore X-Ray Fluorescence (XRF) data from 13 Healy-Oden TransArctic Expedition cores. Lithological and multi-element variations representing glacial and interglacial cycles were correlated using the variable-based Varimax-rotated Principal Component Analysis (VPCA) of the XRF data. The main components generated by the VPCA have been interpreted as related to terrigenous (

The Arctic Seas

The Arctic Seas
  • Author : Yvonne Herman
  • Publisher : Springer Science & Business Media
  • Release : 06 December 2012
GET THIS BOOKThe Arctic Seas

The Arctic region has long held a fascination for explorers and scientists of many countries. Despite the numerous voyages of exploration, the na ture of the central Arctic was unknown only 90 years ago; it was believed to be a shallow sea dotted with islands. During Nansen's historic voyage on the polarship Fram, which commenced in 1893, the great depth of the central basin was discovered. In the Soviet Union, investigation of the Arctic Ocean became national policy after 1917. Today research at