Carbon and nitrogen content of marine pore waters
| Cobertura |
MEDIAN LATITUDE: 39.119603 * MEDIAN LONGITUDE: -71.553159 * SOUTH-BOUND LATITUDE: 38.266667 * WEST-BOUND LONGITUDE: -72.878333 * NORTH-BOUND LATITUDE: 39.611667 * EAST-BOUND LONGITUDE: -70.915000 |
|---|---|
| Data(s) |
24/02/1993
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| Resumo |
We have developed sampling methods and an analytical system to determine the concentration of dissolved organic C (DOC) in marine pore waters. Our analytical approach is a modification of recently developed high-temperature, Pt-catalyzed oxidation methods; it uses Chromatographic trapping of the DOC-derived CO2 followed by reduction to CH4 and flame ionization detection. Sampling experiments with nearshore sediments indicate that pore-water separation by whole-core squeezing causes artificially elevated DOC concentrations, while pore-water recovery by sectioning and centrifugation does not appear to introduce DOC artifacts. Results from a set of northwestern Atlantic continental slope cores suggest that net DOC production accounts for >50% of the organic C that is recycled at the sediment-water interface. |
| Formato |
application/zip, 6 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.734088 doi:10.1594/PANGAEA.734088 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Martin, William R; McCorkle, Daniel C (1993): Dissolved organic carbon concentrations in marine pore waters determined by high-temperature oxidation. Limnology and Oceanography, 38(7), 1464-1479, doi:10.4319/lo.1993.38.7.1464 |
| Palavras-Chave | #ADEPD; ADEPDCruises; Atlantic Data Base for Exchange Processes at the Deep Sea Floor; Carbon, inorganic, dissolved; Carbon, organic, dissolved; CENT; Centrifuge; Depth; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Depth bot; Depth top; DIC; DIN; DOC; Event; Flame ionization detector (FID); M&M_A-c; M&M_A-wcs; M&M_B-c; M&M_B-wcs; M&M_D-c; M&M_D-wcs; M&M_F-c; Nitrate flux; Nitrogen, inorganic, dissolved; NO3 flux; Thermal conductive detector (TCD); Vacuum line manometer; WCS; Whole core squeezer |
| Tipo |
Dataset |
