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| 南海海盆演变与深部海流 | |
| 引用本文： | 翦知湣,田军,黄维,马小林,万随.南海海盆演变与深部海流[J].科技导报(北京),2020,38(18):52-56. |
| 作者姓名： | 翦知湣 田军 黄维 马小林 万随 |
| 作者单位： | 1. 同济大学海洋与地球科学学院, 海洋地质国家重点实验室, 上海 200092; 2. 中国科学院地球环境研究所, 西安 710061; 3. 中国科学院南海海洋研究所, 广州 310012 |
| 基金项目： | 国家自然科学基金重大研究计划项目（91428310）；国家重点研发计划项目（2018YFE0202400） |
| 摘 要： | 南海在距今34 Ma之前的始新世从陆地变为海洋，古水深不断加深，至距今24 Ma之前的中新世/渐新世之交，由于T60构造运动，南海海盆整体进入深海环境。但是，自中新世以来随着吕宋岛弧向欧亚板块碰撞，南海海盆的半封闭程度在距今10.0、6.5、3.0和1.2 Ma之前加剧，导致南海深部海水只能来自巴士海峡海槛深度2600 m以浅的太平洋。此后，巴士海峡两侧的南海与太平洋深部海水交换，由于全球海平面变化，呈现冰期/间冰期模式。 |
| 关 键 词： | 深水古海洋学 南海 海盆演变 冰期旋回 |
| 收稿时间： | 2020-05-11 |
Evolution of the South China Sea basin and the deep circulation |
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| JIAN Zhimin,TIAN Jun,HUANG Wei,MA Xiaolin,WAN Sui.Evolution of the South China Sea basin and the deep circulation[J].Science & Technology Review,2020,38(18):52-56. | |
| Authors: | JIAN Zhimin TIAN Jun HUANG Wei MA Xiaolin WAN Sui |
| Institution: | 1. State Key Laboratory of Marine Geology, School of Ocean and Earth Science, Tongji University, Shanghai 200092, China; 2. Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; 3. South China Sea Institute of Oceanography, Chinese Academy of Sciences, Guangzhou 310012, China |
| Abstract: | The present-day South China Sea (SCS) was evolved from land to sea in the Eocene 34 million years ago, and its paleo-water was very deep. At the turn of the Miocene/Oligocene, 24 million years ago, due to the T60 tectonic movement, the entire SCS basin became a deep-sea environment. Since the Miocene, 10.0, 6.5 and 1.2 million years ago, along with the collision of the Luzon island arc with the Eurasian plate, the semi-closed degree of the SCS basin increased, so that the SCS deep-water could only come from the Pacific above the sill depth (~2600 m) of the Bashi Strait. After that, due to the global sea level change, the deep-water exchange between the SCS and the Pacific on both sides of the Bashi Strait displayed the glacial/interglacial mode. |
| Keywords: | deep-water paleoceanography South China Sea basin evolution glacial cycle |
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