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The flux and recycling of bioactive substances in the surface sediments of the deep basins off southern California

Technical Report ·
DOI:https://doi.org/10.2172/7037149· OSTI ID:7037149
We have used pore water gradients and in situ benthic flux chamber measurements to assess the total and down-core variations in the organic carbon remineralization rate. To augment standard pore water extractions, we developed techniques to extract pore water samples at 2mm sampling intervals, greatly improving our assessment of near- surface vertical gradients. In addition, much emphasis was placed on directly measuring the exchange of chemicals between the bottom waters and sediment pore waters via in situ benthic flux chamber incubations. The latter were performed with the MANOP bottom lander, and in later expeditions, the Benthic Experimental chamber Instrument (BECI). Results from these measurements were used to assess the several aspects of seafloor organic matter diagenesis.
Research Organization:
Skidaway Inst. of Oceanography, Savannah, GA (United States)
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
FG09-88ER60627
OSTI ID:
7037149
Report Number(s):
DOE/ER/60627-4; ON: DE92019172
Country of Publication:
United States
Language:
English