西太平洋深层西边界流研究进展
收稿日期: 2021-09-28
修回日期: 2021-10-27
网络出版日期: 2022-01-29
基金资助
国家自然科学基金重大研究计划重点项目“西太平洋复杂地形下深海动力过程和与上层海洋的联系”(91958204);国家自然科学基金面上项目“西太平洋深层西边界流的结构特征和变异规律”(41776022)
Advances in Research of the Deep Western Boundary Current in the Western Pacific Ocean
Received date: 2021-09-28
Revised date: 2021-10-27
Online published: 2022-01-29
Supported by
the National Natural Science Foundation of China "Deep ocean dynamic processes and their connections with upper ocean over roughness topography in the Western Pacific Ocean"(91958204);"Structure, characteristics and variability of deep western boundary current in the Western Pacific Ocean"(41776022)
中国科学院西太平洋科学观测网实现了对西太平洋深层西边界流的长期连续和组网观测。基于观测网获取的数据并结合模式数据,逐步摸清了深层西边界流在雅浦—马里亚纳海沟连接区季节性入侵西太平洋的路径、流量和动力机制,揭示了地形罗斯贝波引起的深层季节内振荡特征和能量来源,发现了深海与上层海洋和气候变化联系的“高速公路”,改变了以往“深海是死水、杂乱无章和非常缓慢变化”的传统认知,就该方面的创新进展进行了总结,并讨论了下一步太平洋深层环流的观测和研究设想。
关键词: 太平洋深层西边界流; 太平洋深层经向翻转环流; 雅浦—马里亚纳海沟连接区; 季节和季节内变异; 地形罗斯贝波
汪嘉宁 , 马强 , 王凡 , 刘彤 , 张航 , 张志祥 . 西太平洋深层西边界流研究进展[J]. 地球科学进展, 2022 , 37(1) : 26 -36 . DOI: 10.11867/j.issn.1001-8166.2021.107
The Scientific Observing Network of the Chinese Academy of Sciences has realized the long-term mooring measurements of the Deep Western Boundary Current (DWBC) in the western Pacific Ocean. Based on observational data and numerical model outputs, we have illustrated the pathway, volume transport, and forcing mechanism for the seasonal intrusion of the DWBC at the Yap-Mariana Junction, revealed the characteristics and energy sources of deep intraseasonal oscillation induced by the topographic Rossby wave and found "a high-speed way" connecting the DWBC to the upper ocean processes and climate change. These new findings have changed the traditional view that the deep ocean circulation is in a state of calm, disorder, and a very slow variation. This paper summarizes the recent advances in the DWBC in the western Pacific Ocean, and discusses the prospect of observation and scientific study of the Pacific DWBC.
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