1000 resultados para Deutsche Tiefsee-Expedition (1898-1899)
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Description based on: 1898/1899.
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Photoreproduction.
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Mode of access: Internet.
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Mode of access: Internet.
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Title from caption; imprint from vol. t.p.
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Print ceased with: 2007?
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Mode of access: Internet.
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Laest issue consulted: 1911.
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Annual volumes for 1900-1942 called 3rd-45th.
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Description based on: 1898 och 1899.
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Also issued in parts.
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Pub. by the Dept. of Agriculture, 1896-1899; by the Dept. of Public Works, 1900-1915: Dept. of Public Highways, 1916-1927
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Includes index.
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Approaches to quantify the organic carbon accumulation on a global scale generally do not consider the small-scale variability of sedimentary and oceanographic boundary conditions along continental margins. In this study, we present a new approach to regionalize the total organic carbon (TOC) content in surface sediments (<5 cm sediment depth). It is based on a compilation of more than 5500 single measurements from various sources. Global TOC distribution was determined by the application of a combined qualitative and quantitative-geostatistical method. Overall, 33 benthic TOC-based provinces were defined and used to process the global distribution pattern of the TOC content in surface sediments in a 1°x1° grid resolution. Regional dependencies of data points within each single province are expressed by modeled semi-variograms. Measured and estimated TOC values show good correlation, emphasizing the reasonable applicability of the method. The accumulation of organic carbon in marine surface sediments is a key parameter in the control of mineralization processes and the material exchange between the sediment and the ocean water. Our approach will help to improve global budgets of nutrient and carbon cycles.