Millennial-scale paleoceanography in Okinawa Trough during Late Quaternary period  

作　　者：F. Guichard G. Floch 

机构地区：[1]Centre des Faibles Radioactivites , France,French Oceanographic Institute , IFREMER , France

出　　处：《Chinese Science Bulletin》1999年第18期1705-1709,共5页

摘　　要：Based on the analyses of foraminifer and accelerator mass spectrometer radiocarbon dating in DGKS9603 core from mid-Okinawa Trough close to bottom, oscillation curve, which expressed the relation between the surface water temperature and the depth, has been obtained by using foraminifer analysis and calculation of FP-12E transfer function. The whole core indicated seven cold phases and eight warm phases. Obvious expression of lowBased on the analyses of foraminifer and accelerator mass spectrometer radiocarbon dating in DGKS9603 core from mid-Okinawa Trough close to bottom, oscillation curve, which expressed the relation between the surface water temperature and the depth, has been obtained by using foraminifer analysis and calculation of FP-12E transfer function. The whole core indicated seven cold phases and eight warm phases. Obvious expression of low temperature event during Middle and Late Holocene, YD, H1, H2, H3 and H4 events, as well as the short cold phase during the middle last glacial period, implied that short shifts since SO kaBP would have been global significance. Sedimentation rate during cold phases is usually faster than that in warm stages, with the lowest rate in Holocene, which may be connected with rising sea level and principal axial of Kuroshio Current moving to west. Volcanic activities highly developed in Okinawa Trough during the Quaternary period, thus abundant volcanic glass and pumice were well preserved.

关 键 词：OKINAWA THOUGH Late QUATERNARY PERIOD paleoceanograph Heinrich Event. 

分 类 号：P736.222[天文地球—海洋地质]