Chemistry of eastern tropical Atlantic porewater, supplement to: Jahnke, Richard A; Emerson, Steven R; Reimers, Clare; Schuffert, Jeffrey D; Ruttenberg, K; Archer, David E (1989): Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean. Geochimica et Cosmochimica Acta, 53(11), 2947-2960
Distributions of pore water O2, NO-2, NO-3, NH+4, Si(OH)4, PO[3-]4, Mn[2+], F-, and T.A. were determined at 15 stations in the eastern equatorial Atlantic. While overall profile characteristics are consistent with previous models of organic matter diagenesis, profile shapes suggest that a deep react...
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1989
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ftdatacite:10.1594/pangaea.730527 2023-05-15T17:31:33+02:00 Chemistry of eastern tropical Atlantic porewater, supplement to: Jahnke, Richard A; Emerson, Steven R; Reimers, Clare; Schuffert, Jeffrey D; Ruttenberg, K; Archer, David E (1989): Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean. Geochimica et Cosmochimica Acta, 53(11), 2947-2960 Jahnke, Richard A Emerson, Steven R Reimers, Clare Schuffert, Jeffrey D Ruttenberg, K Archer, David E 1989 application/zip https://dx.doi.org/10.1594/pangaea.730527 https://doi.pangaea.de/10.1594/PANGAEA.730527 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/0016-7037(89)90171-3 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Box corer Punch core In situ oxygen microprofiler Box corer with microelectrode Silicon Cycling in the World Ocean SINOPS Supplementary Collection of Datasets Collection article 1989 ftdatacite https://doi.org/10.1594/pangaea.730527 https://doi.org/10.1016/0016-7037(89)90171-3 2022-02-08T16:24:46Z Distributions of pore water O2, NO-2, NO-3, NH+4, Si(OH)4, PO[3-]4, Mn[2+], F-, and T.A. were determined at 15 stations in the eastern equatorial Atlantic. While overall profile characteristics are consistent with previous models of organic matter diagenesis, profile shapes suggest that a deep reaction layer, rich in organic C, is also present at many sites. While it is unlikely that the oxidation of organic C in this layer has had a major effect on the ocean C cycle, pore water profile shapes are significantly altered. Despite exposure to seawater SO[2-]4 concentrations for > 1000 years, decomposition of the organic matter in the layer appears to be restricted to oxic and suboxic processes. These results suggest major differences in organic carbon decomposition and preservation under oxic/suboxic and anoxic conditions.Present-day benthic fluxes are largest adjacent to the eastern boundary coastal upwelling region and similar in magnitude to values reported for the eastern Pacific. Preliminary estimates suggest that the benthic respiration in the eastern 1/3 of the North Atlantic south of 20°N may alone account for >20% of the total deep North Atlantic respiration. Combining these results with estimates of organic C burial and deep water-column decomposition suggests that this region is a major location of organic C input into the deep sea. Article in Journal/Newspaper North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Archer ENVELOPE(162.867,162.867,-76.850,-76.850) Emerson ENVELOPE(168.733,168.733,-71.583,-71.583) Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Box corer Punch core In situ oxygen microprofiler Box corer with microelectrode Silicon Cycling in the World Ocean SINOPS |
spellingShingle |
Box corer Punch core In situ oxygen microprofiler Box corer with microelectrode Silicon Cycling in the World Ocean SINOPS Jahnke, Richard A Emerson, Steven R Reimers, Clare Schuffert, Jeffrey D Ruttenberg, K Archer, David E Chemistry of eastern tropical Atlantic porewater, supplement to: Jahnke, Richard A; Emerson, Steven R; Reimers, Clare; Schuffert, Jeffrey D; Ruttenberg, K; Archer, David E (1989): Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean. Geochimica et Cosmochimica Acta, 53(11), 2947-2960 |
topic_facet |
Box corer Punch core In situ oxygen microprofiler Box corer with microelectrode Silicon Cycling in the World Ocean SINOPS |
description |
Distributions of pore water O2, NO-2, NO-3, NH+4, Si(OH)4, PO[3-]4, Mn[2+], F-, and T.A. were determined at 15 stations in the eastern equatorial Atlantic. While overall profile characteristics are consistent with previous models of organic matter diagenesis, profile shapes suggest that a deep reaction layer, rich in organic C, is also present at many sites. While it is unlikely that the oxidation of organic C in this layer has had a major effect on the ocean C cycle, pore water profile shapes are significantly altered. Despite exposure to seawater SO[2-]4 concentrations for > 1000 years, decomposition of the organic matter in the layer appears to be restricted to oxic and suboxic processes. These results suggest major differences in organic carbon decomposition and preservation under oxic/suboxic and anoxic conditions.Present-day benthic fluxes are largest adjacent to the eastern boundary coastal upwelling region and similar in magnitude to values reported for the eastern Pacific. Preliminary estimates suggest that the benthic respiration in the eastern 1/3 of the North Atlantic south of 20°N may alone account for >20% of the total deep North Atlantic respiration. Combining these results with estimates of organic C burial and deep water-column decomposition suggests that this region is a major location of organic C input into the deep sea. |
format |
Article in Journal/Newspaper |
author |
Jahnke, Richard A Emerson, Steven R Reimers, Clare Schuffert, Jeffrey D Ruttenberg, K Archer, David E |
author_facet |
Jahnke, Richard A Emerson, Steven R Reimers, Clare Schuffert, Jeffrey D Ruttenberg, K Archer, David E |
author_sort |
Jahnke, Richard A |
title |
Chemistry of eastern tropical Atlantic porewater, supplement to: Jahnke, Richard A; Emerson, Steven R; Reimers, Clare; Schuffert, Jeffrey D; Ruttenberg, K; Archer, David E (1989): Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean. Geochimica et Cosmochimica Acta, 53(11), 2947-2960 |
title_short |
Chemistry of eastern tropical Atlantic porewater, supplement to: Jahnke, Richard A; Emerson, Steven R; Reimers, Clare; Schuffert, Jeffrey D; Ruttenberg, K; Archer, David E (1989): Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean. Geochimica et Cosmochimica Acta, 53(11), 2947-2960 |
title_full |
Chemistry of eastern tropical Atlantic porewater, supplement to: Jahnke, Richard A; Emerson, Steven R; Reimers, Clare; Schuffert, Jeffrey D; Ruttenberg, K; Archer, David E (1989): Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean. Geochimica et Cosmochimica Acta, 53(11), 2947-2960 |
title_fullStr |
Chemistry of eastern tropical Atlantic porewater, supplement to: Jahnke, Richard A; Emerson, Steven R; Reimers, Clare; Schuffert, Jeffrey D; Ruttenberg, K; Archer, David E (1989): Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean. Geochimica et Cosmochimica Acta, 53(11), 2947-2960 |
title_full_unstemmed |
Chemistry of eastern tropical Atlantic porewater, supplement to: Jahnke, Richard A; Emerson, Steven R; Reimers, Clare; Schuffert, Jeffrey D; Ruttenberg, K; Archer, David E (1989): Benthic recycling of biogenic debris in the eastern tropical Atlantic Ocean. Geochimica et Cosmochimica Acta, 53(11), 2947-2960 |
title_sort |
chemistry of eastern tropical atlantic porewater, supplement to: jahnke, richard a; emerson, steven r; reimers, clare; schuffert, jeffrey d; ruttenberg, k; archer, david e (1989): benthic recycling of biogenic debris in the eastern tropical atlantic ocean. geochimica et cosmochimica acta, 53(11), 2947-2960 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1989 |
url |
https://dx.doi.org/10.1594/pangaea.730527 https://doi.pangaea.de/10.1594/PANGAEA.730527 |
long_lat |
ENVELOPE(162.867,162.867,-76.850,-76.850) ENVELOPE(168.733,168.733,-71.583,-71.583) |
geographic |
Archer Emerson Pacific |
geographic_facet |
Archer Emerson Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://dx.doi.org/10.1016/0016-7037(89)90171-3 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.730527 https://doi.org/10.1016/0016-7037(89)90171-3 |
_version_ |
1766129190399115264 |