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- Title
Variation of Internal Tides on the Continental Slope of the Southeastern East China Sea.
- Authors
Yang, Bing; Hu, Po; Hou, Yijun
- Abstract
The semidiurnal internal tides (ITs) on the continental slope of the southeastern East China Sea (ECS) exhibited abrupt enhancement in November of 2017. This enhancement resulted from the intensification of the coherent semidiurnal ITs. Coherent and incoherent semidiurnal ITs had a comparative energy contribution in October; however, coherent semidiurnal ITs dominated with a variance contribution of 90% in November. The variance contribution of vertical modes of the semidiurnal ITs varied between October and November, and the mode with most variance contribution changed from the second mode to the first mode. Altimeter data and the observed background currents indicated that the Kuroshio mainstream meandered and abruptly intruded into the ECS in November. The upper layer background currents were significantly related to the kinetic energy of the semidiurnal ITs, and the correlation coefficient between them reached 0.81. The frequent occurrences of the Kuroshio intrusion have suggested that the ITs in the ECS are susceptible to the modulation of the Kuroshio current. Numerical modeling and predication of ITs should consider the meander of the Kuroshio mainstream.
- Subjects
CONTINENTAL slopes; KUROSHIO; KINETIC energy; STATISTICAL correlation
- Publication
Journal of Marine Science & Engineering, 2022, Vol 10, Issue 1, p104
- ISSN
2077-1312
- Publication type
Article
- DOI
10.3390/jmse10010104