...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Paleoceanography >Monsoon hydrography and productivity changes in the East China Seaduring the past 100,000 years: Okinawa Trough evidence (MD012404)
【24h】

Monsoon hydrography and productivity changes in the East China Seaduring the past 100,000 years: Okinawa Trough evidence (MD012404)

机译：冲绳海槽证据（MD012404）：过去10万年来东海季风水文和生产力变化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

[1] We analyzed the high-resolution foraminifer isotope records, total organic carbon (TOC), and opal contentfrom an Okinawa Trough core MD012404 in order to estimate the monsoon hydrography and productivitychanges in the East China Sea (ECS) of the tropical western Pacific over the past 100,000 years. The variabilityshown in the records on orbital time scales indicates that high TOC intervals coincide with the increases ofboreal May-September insolation driven by precession cycles (-21 ka), implying a strong connection to thevariations in monsoons. We also observed possibly nearly synchronous, millennial-scale changes of the ECSsurface hydrography (mainly driven by salinity changes but also by temperature effects) and productivitycoincident with monsoon events in the Hulu/Dongge stalagmite isotope records. We found that increasedfreshening and high productivity correlate with high monsoon intensity in interstadials. This study suggests thatthe millennial-scale changes in monsoon hydrography and productivity in the ECS are remarkable and persistentfeatures over the past 100,000 years.
机译：[1]我们分析了冲绳海槽MD012404的高分辨率有孔虫同位素记录，总有机碳（TOC）和蛋白石含量，以估算热带西太平洋东海（ECS）的季风水文学和生产力变化在过去的100,000年中记录在轨道时间尺度上显示的变异性表明，高TOC间隔与进动周期（-21 ka）驱动的5月至9月的日照增加有关，这与季风变化密切相关。我们还观察到了葫芦/东格石笋同位素记录中ECS地表水文学的近乎同步的千年尺度变化（主要由盐度变化驱动，也受温度效应驱动）以及生产力与季风事件同时发生。我们发现，增加的新鲜感和高生产率与间质中的季风强度高有关。这项研究表明，在过去的100,000年中，ECS季风水文和生产力的千年尺度变化是显着且持久的特征。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号