Japan Geoscience Union Meeting 2018

Presentation information

[EE] Oral

A (Atmospheric and Hydrospheric Sciences) » A-OS Ocean Sciences & Ocean Environment

[A-OS11] What we have learned about ocean mixing in the last decade

Mon. May 21, 2018 10:45 AM - 12:15 PM 105 (1F International Conference Hall, Makuhari Messe)

convener:Toshiyuki Hibiya(Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo), Louis St Laurent (Woods Hole Oceanographic Institution), Ren-Chieh Lien(None, 共同), Robin Ann Robertson (China-ASEAN College of Marine Science Xiamen University Malaysia), Chairperson:van Haren Hans(Royal Netherlands Institute for Sea Research)

11:15 AM - 11:30 AM

[AOS11-09] M2 Internal Tide Generation and Propagation Modulated by Kuroshio to the Northeast of Taiwan

*Zhenhua Xu1,2, Hang Chang1,2, Yang Wang1,2, Baoshu Yin1,2, Yijun Hou1,2 (1.Institute of Oceanology, Chinese Academy of Sciences, 2.Qingdao National Laboratory for Marine Science and Technology)

The Luzon Strait and the area northeast of Taiwan are both prominent sources of internal tides among global ocean. The M2 internal tides originated from Luzon Strait and their radiation processes into the South China Sea have attracted much attention, but few studies have been conducted on the area to the northeast of Taiwan. In the present study, generation, propagation and dissipation processes of M2 internal tides to the northeast of Taiwan are revealed through high-resolution numerical simulations. The Kuroshio are found to play important roles in modulating the lifecycle of M2 internal tides in this area. Interference processes and various topographical features clearly enhance M2 internal tide dissipation and induce strong, inhomogeneous vertical mixing, which is an important factor in energy cascading processes.