海洋地质与第四纪地质2012，Vol.32Issue(4)：9-16,8.DOI:10.3724/SP.J.1140.2012.04009
南海北部晚第四纪颗石藻生产力变化及其影响因素
LATE QUATERNARY COCCOLITH PRODUCTIVITY IN THE NORTHERN SOUTH CHINA SEA
摘要
Abstract
We present hereby the C37 long chain alkenones record from the Core MD 05-2904 located in the northern South China Sea. The C37 alkenones was applied to assess the haptophytes productivity variations. The content and Mass Accumulation Rates (MARs) of the C37 alkenones indicate that during the last 260 ka, the productivity of the haptophytes has generally followed a glacial/ interglacial pattern with high values in glacials, and low values in interglacials. And three high productivity intervals are identified in MIS 2, 4 and MIS 6. There were precession signals in both records. All these display a close link between East Asian winter monsoon and paleo-productivity, and on the orbital scale, marine productivity was controlled by insolation and monsoon variations, mainly through nutrients mechanism. And for the northern SCS, sea level changes and river transportation may also play an important role. These results are consistent with other reports. We also notice that, with consideration of both contents and MARs of biomarker, we can better decipher biomarker record, especially for those areas with big fluctuations in sedimentation rates.关键词
古生产力/冰期/间冰期/东亚季风/岁差/南海北部Key words
paleo-productivity/ glacial/interglacial/ East Asia Monsoon/ precession/ northern South China Sea分类
海洋科学引用本文复制引用
贺娟,李丽,王慧,赵美训..南海北部晚第四纪颗石藻生产力变化及其影响因素[J].海洋地质与第四纪地质,2012,32(4):9-16,8.基金项目
国家自然科学基金项目(40906026,40976022) （40906026,40976022）
上海市科研创新项目(12ZZ031). （12ZZ031）
