Barash, Max S; Bubenshchikova, N V; Kazarina, Galina Kh; Khusid, Tatyana A (2001): Distribution of planktonic and benthic foraminifers in bottom sediments from Core LV28-42-5, Sea of Okhotsk [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.761524, Supplement to: Barash, MS et al. (2001): Paleoceanography of the central part of the Sea of Okhotsk over the past 200 ky (on the basis of micropaleontological data). Translated from Okeanologiya, 2001, 41(5), 755-767, Oceanology, 41(5), 723-735
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Abstract:
Distribution of diatoms and planktonic and benthic foraminifers, as well as correlation of components of sandy grain size fraction were studied in the Quaternary sediment core LV28-42-5 (720 cm long) col¬lected on the southeastern slope (1045 m depth) of the Institute of Oceanology Rise, Sea of Okhotsk. This study allowed to reconstruct principle features of paleoceanographic evolution. In the course of penultimate and last continental glaciations (isotope stages 6 and 4-2) and during the later period of the last interglacial (substages 5.d-5.a) the following conditions were characteristic of this area: low temperatures of surface water, terrigenous sediment accumulation including coarse grained ice-rafted material, minimum bioproductivity and microfossil content in sediments, low sea level, reduced water exchange with the ocean, low position of old deep Pacific water. During the interglacial optimum (substage 5.e), as well as in the last deglaciation and Holocene (stage 1) water temperature and bioproductivity increased, sea level rose, and active surface water exchange between the Sea of Okhotsk and the Pacific Ocean and the Sea of Japan took place. This resulted in intensive inflow of the old deep Pacific water into the Sea of Okhotsk and elevation of its upper boundary by few hundred meters. During the later intervals of these warm periods a dichothermal structure of the upper water layer formed and diatom oozes accumulated.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Latitude: 51.711680 * Longitude: 150.981320
Date/Time Start: 1998-08-22T11:51:00 * Date/Time End: 1998-08-22T11:51:00
Event(s):
LV28-42-5 * Latitude: 51.711680 * Longitude: 150.981320 * Date/Time: 1998-08-22T11:51:00 * Elevation: -1045.0 m * Recovery: 7.2 m * Location: Sea of Okhotsk * Campaign: LV28 (KOMEX I) * Basis: Akademik M.A. Lavrentyev * Method/Device: Gravity corer (GC) * Comment: East/West Transect cont./720 cm/
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Barash, MS; Bubenshchikova, NV; Kazarina, GK et al. (2001): (Table 2) Distribution of planktonic foraminiferal species in bottom sediments from Core LV28-42-5, Sea of Okhotsk. https://doi.org/10.1594/PANGAEA.761521
- Barash, MS; Bubenshchikova, NV; Kazarina, GK et al. (2001): (Table 3) Distribution of principal species of benthic foraminifers in bottom sediments from Core LV28-42-5, Sea of Okhotsk. https://doi.org/10.1594/PANGAEA.761523