Vertical displacement loading tides and self-attraction and loading tides in the South China Sea and adjacent straits

Xu Xiaoqing; Wei Zexun; Teng Fei; Fang Guohong

doi:10.12284/hyxb2022112

Volume 44 Issue 7

Jul. 2022

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Xu Xiaoqing，Wei Zexun，Teng Fei, et al. Vertical displacement loading tides and self-attraction and loading tides in the South China Sea and adjacent straits[J]. Haiyang Xuebao，2022, 44(7)：17–24 doi: 10.12284/hyxb2022112

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Vertical displacement loading tides and self-attraction and loading tides in the South China Sea and adjacent straits

doi: 10.12284/hyxb2022112

Xu Xiaoqing^{1, 2, 3, 4, 5
,},
Wei Zexun^{2, 3, 4, 5
,
,},
Teng Fei^{2, 3, 4, 5},
Fang Guohong^{2, 3, 4, 5}

1.
College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, China
2.
First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
3.
Key Laboratory of Marine Science and Numerical Modeling, Ministry of Natural Resources, Qingdao 266061, China
4.
Shandong Key Laboratory of Marine Science and Numerical Modeling, Qingdao 266061, China
5.
Laboratory for Regional Oceanography and Numerical Modeling, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China

Received Date: 2021-11-30
Rev Recd Date: 2021-12-23

Available Online: 2022-07-01

Publish Date: 2022-07-01

Abstract

Abstract

The loading tides in the South China Sea and adjacent straits are calculated by means of the Green’s function method based on a high-resolution regional ocean tide model for the South China Sea, the DTU10 global ocean tide model, and the Gutenberg-Bullen A Earth model. The results show that the maximum amplitude of M₂ vertical displacement loading (VDL) tide exceeding 18 mm appears in the Taiwan Strait; the second maximum exceeding 14 mm appears off the north-west coast of Kalimantan. The maximum amplitudes of the K₁ and O₁ VDL tides, exceeding 18 mm and 14 mm respectively, appear near the southern South China Sea; the second maximum exceeding 8 mm, appears in the Beibu Gulf. The distribution patterns of self-attraction and loading (SAL) tides are very similar to those of VDL tides in that the SAL tides have amplitudes about 1.2 times to 1.7 times the corresponding VDL tides and have phases basically opposite to corresponding VDL tides. The maximum amplitude of M₂ SAL tide also appears in the Taiwan Strait and off the north-west coast of Kalimantan, with a magnitude exceeding 24 mm and 18 mm respectively.
- South China Sea and adjacent straits,
- vertical displacement loading tides,
- self-attraction and loading tides

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References(29)

References

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