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Shelf-Basin interac...
Shelf-Basin interaction along the East Siberian Sea
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- Anderson, Leif G, 1951 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences,Univ Gothenburg, Dept Marine Sci, POB 461, S-40530 Gothenburg, Sweden.
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- Björk, Göran, 1956 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences,Univ Gothenburg, Dept Marine Sci, POB 461, S-40530 Gothenburg, Sweden.
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- Holby, Ola, 1959- (author)
- Karlstads universitet,Avdelningen för energi-, miljö- och byggteknik
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- Jutterstrom, S. (author)
- IVL Swedish Environm Res Inst, Box 530 21, S-40014 Gothenburg, Sweden.
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- Mörth, Carl Magnus (author)
- Stockholms universitet,Institutionen för geologiska vetenskaper,Stockholm Univ, Dept Geol Sci, S-10691 Stockholm, Sweden.
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- O'Regan, Matt (author)
- Stockholms universitet,Institutionen för geologiska vetenskaper,Stockholm Univ, Dept Geol Sci, S-10691 Stockholm, Sweden.
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- Pearce, Christof (author)
- Stockholms universitet,Institutionen för geologiska vetenskaper,Aarhus University, Denmark,Stockholm Univ, Dept Geol Sci, S-10691 Stockholm, Sweden.;Aarhus Univ, Dept Geosci, Aarhus, Denmark.
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- Semiletov, I. (author)
- Univ Alaska Fairbanks, Int Arctic Res Ctr, Fairbanks, AK 99775 USA.;Russian Acad Sci, Far Eastern Branch, Pacific Oceanol Inst, Vladivostok 690041, Russia.;Natl Res Tomsk Polytech Univ, Tomsk, Russia.
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- Stranne, C. (author)
- Ctr Coastal & Ocean Mapping, Joint Hydrog Ctr, Durham, NH 03824 USA.
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- Stöven, Tim, 1987 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences,GEOMAR, Helmholtz Ctr Ocean Res Kiel, Kiel, Germany.
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- Tanhua, T. (author)
- GEOMAR, Helmholtz Ctr Ocean Res Kiel, Kiel, Germany.
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- Ulfsbo, Adam, 1985 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences,Univ Gothenburg, Dept Marine Sci, POB 461, S-40530 Gothenburg, Sweden.;Duke Univ, Nicholas Sch Environm, Div Earth & Ocean Sci, Durham, NC 27704 USA.
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- Jakobsson, Martin (author)
- Stockholms universitet,Institutionen för geologiska vetenskaper,Stockholm Univ, Dept Geol Sci, S-10691 Stockholm, Sweden.
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(creator_code:org_t)
- 2017-04-27
- 2017
- English.
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In: Ocean Science. - : Copernicus GmbH. - 1812-0784 .- 1812-0792. ; 13:2, s. 349-363
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https://doi.org/10.5...
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Abstract
Subject headings
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- Extensive biogeochemical transformation of organic matter takes place in the shallow continental shelf seas of Siberia. This, in combination with brine production from sea-ice formation, results in cold bottom waters with relatively high salinity and nutrient concentrations, as well as low oxygen and pH levels. Data from the SWERUS-C3 expedition with icebreaker Oden, from July to September 2014, show the distribution of such nutrient-rich, cold bottom waters along the continental margin from about 140 to 180 degrees E. The water with maximum nutrient concentration, classically named the upper halocline, is absent over the Lomonosov Ridge at 140 degrees E, while it appears in the Makarov Basin at 150 degrees E and intensifies further eastwards. At the intercept between the Mendeleev Ridge and the East Siberian continental shelf slope, the nutrient maximum is still intense, but distributed across a larger depth interval. The nutrient-rich water is found here at salinities of up to similar to 34.5, i.e. in the water classically named lower halocline. East of 170 degrees E transient tracers show significantly less ventilated waters below about 150 m water depth. This likely results from a local isolation of waters over the Chukchi Abyssal Plain as the boundary current from the west is steered away from this area by the bathymetry of the Mendeleev Ridge. The water with salinities of similar to 34.5 has high nutrients and low oxygen concentrations as well as low pH, typically indicating decay of organic matter. A deficit in nitrate relative to phosphate suggests that this process partly occurs under hypoxia. We conclude that the high nutrient water with salinity similar to 34.5 are formed on the shelf slope in the Mendeleev Ridge region from interior basin water that is trapped for enough time to attain its signature through interaction with the sediment.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Keyword
- arctic-ocean
- laptev sea
- water
- halocline
- carbon
- makarov
- variability
- circulation
- calibration
- dynamics
- Meteorology & Atmospheric Sciences
- Oceanography
- Miljö- och energisystem
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Anderson, Leif G ...
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Björk, Göran, 19 ...
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Holby, Ola, 1959 ...
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Jutterstrom, S.
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Mörth, Carl Magn ...
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O'Regan, Matt
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show more...
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Pearce, Christof
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Semiletov, I.
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Stranne, C.
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Stöven, Tim, 198 ...
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Tanhua, T.
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Ulfsbo, Adam, 19 ...
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Jakobsson, Marti ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Oceanography Hyd ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Meteorology and ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
- Articles in the publication
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Ocean Science
- By the university
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University of Gothenburg
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Stockholm University
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Karlstad University