SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)
Upper ocean near-inertial response to the passage of two sequential typhoons in the northwestern South China Sea
Ma, Yonggui; Zhang, Shuwen1; Qi, Yiquan2; Jing, Zhiyou3
2019
Source PublicationSCIENCE CHINA-EARTH SCIENCES
ISSN1674-7313
Volume62Issue:5Pages:863
AbstractFifty-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.
DepartmentLTO
KeywordTyphoon Nesat Typhoon Nalgae Near-inertial waves Near-inertial kinetic energy Inertial wave propagation
DOI10.1007/s11430-018-9292-3
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17736
Collection热带海洋环境国家重点实验室(LTO)
Affiliation1.Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang 524088, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao 266237, Shandong, Peoples R China
3.Hohai Univ, Coll Oceanog, Nanjing 210098, Jiangsu, Peoples R China
4.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Ma, Yonggui,Zhang, Shuwen,Qi, Yiquan,et al. Upper ocean near-inertial response to the passage of two sequential typhoons in the northwestern South China Sea[J]. SCIENCE CHINA-EARTH SCIENCES,2019,62(5):863, 871.
APA Ma, Yonggui,Zhang, Shuwen,Qi, Yiquan,&Jing, Zhiyou.(2019).Upper ocean near-inertial response to the passage of two sequential typhoons in the northwestern South China Sea.SCIENCE CHINA-EARTH SCIENCES,62(5),863.
MLA Ma, Yonggui,et al."Upper ocean near-inertial response to the passage of two sequential typhoons in the northwestern South China Sea".SCIENCE CHINA-EARTH SCIENCES 62.5(2019):863.
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