Characteristics of abyssal tidal currents east of the Luzon Strait: Cast study from <i>in situ</i> observation

Kuang Fangfang; Pan Aijun; Zhang Junpeng; Huang Jiang; Cai Shangzhan

doi:10.12284/hyxb2021031

Volume 43 Issue 1

Feb. 2021

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Kuang Fangfang，Pan Aijun，Zhang Junpeng, et al. Characteristics of abyssal tidal currents east of the Luzon Strait: Cast study from in situ observation[J]. Haiyang Xuebao，2021, 43(1)：55–60 doi: 10.12284/hyxb2021031

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Kuang Fangfang，Pan Aijun，Zhang Junpeng, et al. Characteristics of abyssal tidal currents east of the Luzon Strait: Cast study from in situ observation[J]. Haiyang Xuebao，2021, 43(1)：55–60 doi: 10.12284/hyxb2021031

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Characteristics of abyssal tidal currents east of the Luzon Strait: Cast study from in situ observation

doi: 10.12284/hyxb2021031

Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China

Received Date: 2019-07-26
Rev Recd Date: 2019-09-24

Available Online: 2021-01-27

Publish Date: 2021-01-25

Abstract

Abstract

A submarine mooring system was deployed in the east of the Luzon Strait and the vertical distribution of high frequency (mostly tidal) variations of ocean currents were analyzed in the paper. Several features were revealed that the tidal kinetic energy of the middle (1 550 m) and the deep layers（2 560 m） was one to two orders smaller than that of the subsurface layers (100−160 m) , and slightly smaller than that of the near-bottom layers (4 040 m); the tidal currents were irregular semi-diurnal in the subsurface layers and were irregular diurnal in the middle and deep layers; the tidal kinetic energy was larger in summer (June to September) and winter (February to March) , which mainly caused by enhancement of M₂ and K₁ tidal components in corresponding periods; the high frequency fluctuations in all layers were mainly in clockwise rotation; the near-inertial frequency in the upper layers (middle and deep layers) were close to (slightly smaller than) the local inertial frequency.
- Western Pacific,
- mooring observation,
- tidal currents

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References(12)

References

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