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Cite this paper: |
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HU Shijian, LIU Lingling, GUAN Cong, ZHANG Linlin, WANG Jianing, WANG Qingye, MA Jie, WANG Fujun, JIA Fan, FENG Junqiao, LU Xi, WANG Fan, HU Dunxin. Dynamic features of near-inertial oscillations in the Northwestern Pacific derived from mooring observations from 2015 to 2018[J]. Journal of Oceanology and Limnology, 2020, 38(4): 1092-1107 |
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Dynamic features of near-inertial oscillations in the Northwestern Pacific derived from mooring observations from 2015 to 2018 |
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HU Shijian1,2,3,4, LIU Lingling1,2,3,4, GUAN Cong1,2,3,4, ZHANG Linlin1,2,3,4, WANG Jianing1,2,3,4, WANG Qingye1,2,3,4, MA Jie1,2,3,4, WANG Fujun1,2,3,4, JIA Fan1,2,3,4, FENG Junqiao1,2,3,4, LU Xi1,2,3,4, WANG Fan1,2,3,4, HU Dunxin1,2,3,4 |
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1 CAS Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; 2 Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China; 3 Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China; 4 College of Marine Science, University of Chinese Academy of Sciences, Qingdao 266071, China |
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Abstract: |
Near-inertial oscillation is an important physical process transferring surface wind energy into deep ocean. We investigated the near-inertial kinetic energy (NIKE) variability using acoustic Doppler current profiler measurements from a mooring array deployed in the tropical western Pacific Ocean along 130°E at 8.5°N, 11°N, 12.6°N, 15°N, and 17.5°N from September 2015 to January 2018. Spatial features, decay timescales, and significant seasonal variability of the observed NIKE were described. At the mooring sites of 17.5°N, 15°N, and 12.6°N, the NIKE peaks occurred in boreal autumn and the NIKE troughs were observed in boreal spring. By contrast, the NIKE at 11°N and 8.5°N showed peaks in winter and troughs in summer. Tropical cyclones and strong wind events played an important role in the emergence of high-NIKE events and explained the seasonality and latitudinal characteristics of the observed NIKE. |
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Key words:
near-inertial kinetic energy|western Pacific Ocean|tropical cyclones|mooring array|seasonal variability
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Received: 2019-12-23 Revised: 2020-01-09 |
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