Middle to late Holocene changes of the Okhotsk Sea Intermediate Water and their relation to atmospheric circulation

Details Middle to late Holocene changes of the Okhotsk Sea Intermediate Water and their relation to atmospheric circulation Middle to late Holocene changes of the Okhotsk Sea Intermediate Water and their relation to atmospheric circulation

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3124309i&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 24, CiteID L24309

Mathematics

Logic

2

Oceanography: General: Paleoceanography, Meteorology And Atmospheric Dynamics: Ocean/Atmosphere Interactions (0312, 4504), Marine Geology And Geophysics: Micropaleontology, Meteorology And Atmospheric Dynamics: Paleoclimatology, Oceanography: Biological And Chemical: Plankton

Scientific paper

High abundance of the radiolarian Cycladophora davisiana in the Sea of Okhotsk has been observed at the Okhotsk Sea Intermediate Water (OSIW). This water is formed by brine rejection in the polynya and is characterized by cold, oxygenated conditions, with high a microbial content. The C. davisiana abundance recorded in three sediment cores from the southwestern part of the sea implies ventilation changes of the OSIW during the last 7.5 kyrs. The ventilation had significantly increased during the interval from 7.5 to 3.5 ka corresponding to a warm period, but declined during 3 to 2 ka and at 0.3-0.4 ka coincident with cold periods such as the Neoglaciation and Little Ice Age, respectively. The declined ventilation might be caused by reduction of the polynyas with the wind vector change from a northerly to an easterly direction relating to the southward shift of the Aleutian Low during the strong winter.

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