文献类型：期刊文献

中文题名：Upper ocean near-inertial response to the passage of two sequential typhoons in the northwestern South China Sea

英文题名：Upper ocean near-inertial response to the passage of two sequential typhoons in the northwestern South China Sea

作者：Yonggui MA[1];Shuwen ZHANG[1,2];Yiquan QI[3];Zhiyou JING[4]

机构：[1]College of Ocean and Meteorology, Guangdong Ocean University;[2]Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology;[3]College of Oceanography, Hohai University;[4]State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology,Chinese Academy of Sciences

年份：2019

卷号：62

期号：5

起止页码：863

中文期刊名：Science China Earth Sciences

外文期刊名：中国科学（地球科学英文版）

收录：Scopus、CSCD2019_2020、CSCD

基金：supported by the National Natural Science Foundation of China(Grant Nos.41676008&40876005);the National Key Research and Development Program of China(Grant No.2016YFC14001403);the National Program on Global Change and AirSea Interaction(Grant No.GASI-IPOVI-04)

语种：英文

中文关键词：Typhoon;Nesat;Typhoon;Nalgae;Near-inertial;waves;Near-inertial;kinetic;energy;Inertial;wave;propagation

外文关键词：Typhoon Nesat;Typhoon Nalgae;Near-inertial waves;Near-inertial kinetic energy;Inertial wave propagation

中文摘要：Fifty-seven days of moored current records are examined, focusing on the sequential passage of Typhoons Nesat and Nalgae separated by 5 days in the northwestern South China Sea. Both typhoons generated strong near-inertial waves(NIW) as detected by a moored array, with the near-inertial velocity to the right of the typhoon path significantly larger than to the left. The estimated vertical phase and group velocities of the NIW induced by Typhoon Nesat are 0.2 cm s^(-1) and 0.85 m h^(-1), respectively,corresponding to a vertical wavelength of 350 m. Both the vertical phase and group velocities of the NIW induced by Typhoon Nalgae are lower than those of Typhoon Nesat, with the corresponding vertical wavelength only one-half that of Nesat. The threshold values of induced near-inertial kinetic energy(NIKE) of 5 J m^(-3) reach water depths of 300 and 200 m for Typhoons Nesat and Nalgae, respectively, illustrating that the NIKE induced by Typhoon Nesat dissipated less with depth. Obvious blueshifts in the induced NIW frequencies are also detected. The frequency of NIW induced by Typhoon Nesat significantly increases at water depths of 100–150 m because of Doppler shifting, but decreases significantly at water depths of 100–150 m for Nalgae because of the greater influence of the background vorticity during the passage of Typhoon Nalgae.

外文摘要：Fifty-seven days of moored current records are examined, focusing on the sequential passage of Typhoons Nesat and Nalgae separated by 5 days in the northwestern South China Sea. Both typhoons generated strong near-inertial waves(NIW) as detected by a moored array, with the near-inertial velocity to the right of the typhoon path significantly larger than to the left. The estimated vertical phase and group velocities of the NIW induced by Typhoon Nesat are 0.2 cm s^(-1) and 0.85 m h^(-1), respectively,corresponding to a vertical wavelength of 350 m. Both the vertical phase and group velocities of the NIW induced by Typhoon Nalgae are lower than those of Typhoon Nesat, with the corresponding vertical wavelength only one-half that of Nesat. The threshold values of induced near-inertial kinetic energy(NIKE) of 5 J m^(-3) reach water depths of 300 and 200 m for Typhoons Nesat and Nalgae, respectively, illustrating that the NIKE induced by Typhoon Nesat dissipated less with depth. Obvious blueshifts in the induced NIW frequencies are also detected. The frequency of NIW induced by Typhoon Nesat significantly increases at water depths of 100–150 m because of Doppler shifting, but decreases significantly at water depths of 100–150 m for Nalgae because of the greater influence of the background vorticity during the passage of Typhoon Nalgae.