FN Archimer Export Format
PT J
TI Environmental change in the Sea of Okhotsk during the last 1.1 million years
BT 
AF NURNBERG, D
   TIEDEMANN, R
AS 1:1;2:1;
FF 1:;2:;
C1 Leibniz Inst Meereswissensch, D-24148 Kiel, Germany.
C2 IFM GEOMAR, GERMANY
IF 3.018
TC 110
UR https://archimer.ifremer.fr/doc/00228/33934/32231.pdf
LA English
DT Article
CR MD 122 / WEPAMA
BO Marion Dufresne
DE ;Sea of Okhotsk;paleoproductivity;terrigenous flux;sea ice dynamics;stratigraphy
AB On the basis of two sedimentary records from the central Sea of Okhotsk, we reconstruct the closely coupled glacial/interglacial changes in terrigenous flux, marine productivity, and sea ice coverage over the past 1.1 Myr. The correspondance of our sedimentary records to the China loess grain size record ( China loess particle timescale, CHILOPARTS) suggests that environmental changes in both the Sea of Okhotsk area and in SE Asia were closely related via the Siberian atmospheric high-pressure cell. During full glacial times our records point to a strong Siberian High causing northerly wind directions, the extension of the sea ice cover, and a reduced Amur River discharge. Deglacial maxima of terrigenous flux were succeeded by or synchronous to high-productivity events. Marine productivity was strengthened during glacial terminations because of an effective nutrient utilization at times of enhanced water column stratification and high nutrient supply from fluvial runoff and sea ice thawing. During interglacials, SE monsoonal winds prevailed, analogous to today's summer situation of a pronounced Mongolian Heat Low and a strong Hawaiian High. Strong freshwater discharge induced by high precipitation rates in the Amur drainage area and a seasonally reduced and mobile sea ice cover favored marine productivity ( although being considerably lower than during the terminations) and a lowered flux of ice-rafted detritus.
PY 2004
PD NOV
SO Paleoceanography
SN 0883-8305
PU Amer Geophysical Union
VL 19
IS PA4011
UT 000225033500001
BP 1
EP 23
DI 10.1029/2004PA001023
ID 33934
ER

EF