Bubenshchikova, N V; Nürnberg, Dirk; Gorbarenko, Sergey A; Lembke-Jene, Lester (2010): Age determinations of bottom sediments from the Sea of Okhotsk by different methods. PANGAEA, https://doi.org/10.1594/PANGAEA.763911, Supplement to: Bubenshchikova, NV et al. (2010): Variations of the oxygen minimum zone of the Okhotsk Sea during the last 50 ka as indicated by benthic foraminiferal and biogeochemical data. Translated from Okeanologiya, 2010, 50(1), 99-113, Oceanology, 50(1), 93-106, https://doi.org/10.1134/S000143701001011X
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On the base of data on benthic foraminifera and sediment biogeochemistry (contents of total organic carbon, calcium carbonate and biogenic opal) in two cores (1265 and 1312 m water depth) from the southeastern Sakhalin slope and one core (839 m water depth) from the southwestern Kamchatka slope variations of the oxygen minimum zone during the last 50 ka in the Okhotsk Sea are reconstructed. The oxygen minimum zone was less pronounced during cooling in the MIS 2 that is suggested to be caused by maximal expansion of the sea ice cover, decrease of marine productivity and increase of production of oxygenated Okhotsk Sea Intermediate Water (OSIW). Two-step-like strengthening of oxygen minimum zone during warmings in the Terminations 1a and 1b was combined with (1) enhanced oxygen consumption due to decomposition of large amount of organic matter in the water column and bottom sediments due to increased marine productivity and supply of terrigenous material from submerged northern shelves; (2) sea ice cover retreat and reduction of OSIW production; (3) freely inflow of the oxygen-depleted intermediate water mass from the North Pacific.
Median Latitude: 50.217171 * Median Longitude: 149.036127 * South-bound Latitude: 48.378833 * West-bound Longitude: 146.036950 * North-bound Latitude: 51.895950 * East-bound Longitude: 152.300867
Date/Time Start: 1998-08-12T16:45:00 * Date/Time End: 1998-08-22T21:32:00
LV28-2-4 * Latitude: 48.378833 * Longitude: 146.036950 * Date/Time: 1998-08-12T16:45:00 * Elevation: -1265.0 m * Recovery: 6.35 m * Location: Sea of Okhotsk * Campaign: LV28 (KOMEX I) * Basis: Akademik M.A. Lavrentyev * Device: Gravity corer (GC) * Comment: North/South Transect/635 cm/
LV28-40-5 * Latitude: 51.334083 * Longitude: 147.177183 * Date/Time: 1998-08-21T10:08:00 * Elevation: -1312.0 m * Recovery: 8.03 m * Location: Sea of Okhotsk * Campaign: LV28 (KOMEX I) * Basis: Akademik M.A. Lavrentyev * Device: Gravity corer (GC) * Comment: East/West Transect cont./803 cm/
Datasets listed in this publication series
- Bubenshchikova, NV; Nürnberg, D; Gorbarenko, SA et al. (2010): (Table 1) Oxygen in bottom waters and sea ice duration at coring places of Cruise LV28 in the Sea of Okhotsk. https://doi.org/10.1594/PANGAEA.763889
- Bubenshchikova, NV; Nürnberg, D; Gorbarenko, SA et al. (2010): (Table 2) Ages of bottom sediments from three cores in the Sea of Okhotsk. https://doi.org/10.1594/PANGAEA.763910