文献类型：期刊文献

英文题名：Rogue waves in the northern part of the South China Sea: chaotic dynamics and multiparameter synergy determination

作者：Feng, Tao[1,2,3,4,5];Zhang, Tianyu[1,2,3,4,5];Yan, Danchen[6];Wang, Hailong[1,2,3,4,5];Yang, Jian[1,2,3,4,5];Lin, Xun[1,2,3,4,5];Zhang, Junping[1,2,3,4,5]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Coll Ocean & Meteorol, Lab Coastal Ocean Variat & Disaster Predict, Zhanjiang 524088, Peoples R China;[3]Guangdong Ocean Univ, Dept Educ Guangdong Prov, Key Lab Climate Resources & Environm Continental S, Zhanjiang 524088, Peoples R China;[4]Minist Nat Resources, Key Lab Space Ocean Remote Sensing & Applicat, Beijing 100081, Peoples R China;[5]Guangdong Ocean Univ, Trop Ocean Environm Western Coastal Waters Observa, Zhanjiang 524088, Peoples R China;[6]Natl Marine Environm Forecasting Ctr, Beijing 100081, Peoples R China

年份：2025

外文期刊名：JOURNAL OF OCEANOLOGY AND LIMNOLOGY

收录：SCI-EXPANDED(收录号：WOS:001633400400001)、、Scopus(收录号：2-s2.0-105024237803)、WOS

基金：Supported by the National Natural Science Foundation of China (Nos. 42476219, 42401111, 41976200), the National Foreign Experts Program (No. S20240134), the National Key Research and Development Program of China (Nos. 2021YFC3101801, 2023YFC3008200), the Innovative Team Plan of the Department of Education of Guangdong Province (No. 2023KCXTD015), the Tropical Ocean Environment in Western Coastal Waters Observation and Research Station of Guangdong Province (No. 2024B1212040008), the Project supported by Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) (Nos. SML2022SP301, SML2024SP023), the Innovative Programs for Ordinary Higher Education Institutions in Guangdong Province (No. 2024KTSCX200), and the Shandong Innovation and Development Research Institute Think Tank Project, and the Guangdong Ocean University Start-up Scientific Research Program (Nos. 060302032106, 060302032104)

语种：英文

外文关键词：northern South China Sea; rogue wave; wave parameter threshold; energy distribution; chaotic dynamic

外文摘要：Based on wave data recorded in 2020 from 10 buoy stations in the northern part of the South China Sea, the synergistic effects of wave parameters such as wave steepness, spectral width, kurtosis, skewness and Benjamin-Feir index (BFI) on a rogue wave group in the northern waters of the South China Sea were investigated. The frequency and energy distributions of three types of rogue waves were recognized based on wavelet transform. Chaotic dynamics was introduced to study the chaotic phenomena in the wave series where rogue wave were located. Results show that wave steepening enhanced the nonlinear effect of waves, and a narrow spectrum could suppress the dispersion effect, which increased the BFI, triggered the modulation instability of waves, and promoted the generation of distorted waves. When kurtosis>3, the BFI increases as the degree of kurtosis deviation from the Gaussian distribution increases. In particular, when kurtosis>3 and H/Hs>2.2, the increase in kurtosis contributes significantly to the increase in the anomalous intensity of the rogue wave. Rogue waves induced by modulation instability and those induced by the superposition of wave clusters can be explained by phase and dispersion modulation as well as by energy distribution, whereas the generation mechanism of rogue waves that have not grown sufficiently is difficult to resolve from the time-domain waveform characteristics and the frequency-domain wavelet energy density. Qualitative analysis by the Poincar & eacute; cross section and quantitative analysis by the Lyapunov exponent verified that the nonlinear wave system, in which a rogue wave is located in the wave train, has weakly chaotic dynamic behavior.