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Variations of alkenone temperature in the Sea of Japan during the last 170 ka and its paleoceanographic implications

Chinese science bulletin, 2014-11, Vol.59 (33), p.4498-4509

Science China Press and Springer-Verlag Berlin Heidelberg 2014 ;ISSN: 1001-6538 ;EISSN: 1861-9541 ;DOI: 10.1007/s11434-014-0367-6

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Title:
Variations of alkenone temperature in the Sea of Japan during the last 170 ka and its paleoceanographic implications
Author: Liu, Yanguang ; Chen, Jiaojie ; Chen, Jinxia ; Xing, Lei ; Zou, Jianjun ; Yao, Zhengquan
Subjects: Asian ; Chemistry/Food Science ; Earth Sciences ; Engineering ; Glacial periods ; Humanities and Social Sciences ; ice ; Insolation ; Life Sciences ; monsoon season ; Monsoons ; multidisciplinary ; Physics ; Science ; Science (multidisciplinary) ; Sea ice ; sea level ; Sea of Japan ; Sea surface temperature ; sediments ; solar radiation ; SST ; summer ; temperature ; Time ; water salinity ; 古海洋学 ; 太阳辐射 ; 日本海 ; 末次盛冰期 ; 末次间冰期 ; 海表温度 ; 烯酮
Is Part Of: Chinese science bulletin, 2014-11, Vol.59 (33), p.4498-4509
Description: Two sediment cores, KCES1 and ODP797, which were recovered from the Sea of Japan （JS）, were measured for alkenone-derived sea surface temperatures （U37-SSTs）. Our results revealed that the SSTs closely follow the glacial-interglacial cycles during the last 170 ka, except in the last glacial maximum （LGM）, during which the SST was higher than in the Holocene. The anomalous high temperature in the LGM is considered as an effect of the intrusion of a low salinity water mass into the JS when the sea level was almost below 130 m. On the glacial- K interglacial to orbital timescale, the U37-SSTs record in the JS correlated well with the benthic foraminiferal SO record and solar insolation, which suggests the dominant control of solar insolation and its related sea ice develop- ment on the SST in the JS. On the sub-orbital/millennial timescale, reduced SST corresponds to an enhanced east asian winter monsoon （EAWM） during the last glacial period （MIS3 and MIS4）, indicating the dominant control of sea ice expansion due to the enhanced EAWM on the SST in the JS. In contrast, during the last interglacial period （MIS5）, the SST in the JS was controlled by variations in the east Asian summer monsoon. These results highlight the key role of solar insolation and associated glacial-interglacial conditions in the variations of the SST in the JS since the last 170 ka.
Publisher: Heidelberg: Springer-Verlag
Language: English
Identifier: ISSN: 1001-6538
EISSN: 1861-9541
DOI: 10.1007/s11434-014-0367-6
Source: GFMER Free Medical Journals

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Variations of alkenone temperature in the Sea of Japan during the last 170 ka and its paleoceanographic implications

Science China Press and Springer-Verlag Berlin Heidelberg 2014 ;ISSN: 1001-6538 ;EISSN: 1861-9541 ;DOI: 10.1007/s11434-014-0367-6

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