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| 1 | Progress in research of submesoscale processes in the South China Sea显示文摘This paper overviews research progress in observation, theoretical analysis and numerical modeling of submesoscale dynamic processes in the South China Sea(SCS) particularly during recent five years. The submesoscale processes are defined according to both spatial and dynamic scales, and divided into four subcategories as submesoscale waves, submesoscale vortexes, submesoscale shelf processes, and submesoscale turbulence. The major new findings are as follows.(1) Systematic mooring observations provide new insights into the solitary waves(ISWs) and the typhoon-forced near-inertial waves(NIWs), of which a new type of ISWs with period of 23 h was observed in the northern SCS(NSCS), and the influences of background vorticity, summer monsoon onset, and deep meridional overturning circulation on the NIWs, as well as nonlinear wave-wave interaction between the NIWs and internal tides, are better understood. On the other hand, satellite altimeter sea surface height data are used to reveal the internal tide radiation patterns and provide solid evidence for that the ISWs in the northeastern SCS originate from the Luzon Strait.(2) Submesoscale offshore jets and associated vortex trains off the Vietnam coast in the western boundary of the SCS were observed from satellite chlorophyll concentration images. Spiral trains with the horizontal scale of 15–30 km and the spacing of 50–80 km were identified.(3) 3-D vertical circulation in the upwelling region east of Hainan Island was theoretically analyzed. The results show that distribution patterns of all the dynamic terms are featured by wave-like structures with horizontal wavelength scale of 20–40 km.(4) Numerical models have been used for the research of submesoscale turbulence. Submesoscale vertical pump of an anticyclonic eddy and the spatiotemporal features of submesoscale processes in the northeastern SCS are well modeled. | Quanan Zheng Lingling Xie Xuejun Xiong Xiaomin Hu Liang Chen | 2020 | Acta Oceanologica Sinica2020，39，1： | 7 |
| 2 | 南海西北部上层海洋对连续台风的近惯性响应显示文摘文章基于2011年9~11月南海西沙潜标观测资料,研究了西沙海域上层海洋对连续台风Nesat(1117)和Nalgae(1119)过境的近惯性响应.结果表明:两个台风过境都产生了强烈的近惯性振荡,且台风路径右侧的近惯性流速明显大于左侧. Nesat引起的近惯性内波平均垂向相速度为0.25cm s^(-1),垂向群速度为0.85m h-1,垂向波长为350m.Nalgae所引起的近惯性内波垂向相速度和群速度均小于Nesat,垂向波长仅为Nesat的1/2.两个台风引起的近惯性能量下传深度存在明显差异, Nalgae约为200m,而Nesat可下传至300m.产生这一差异的主要原因是Nesat引起的近惯性能量不易耗散,同时能够以较快的速度向深海传播.此外,两个台风引起的近惯性内波频率都存在明显的蓝移现象. Nesat引起的近惯性内波频率在100~150m深度受多普勒频移的影响明显增大;然而Nalgae引起的近惯性内波频率却在100~150m深度显著减小,这是由于两个台风过境期间,西沙海域背景场涡度差异所致. | 马永贵 张书文 齐义泉 经志友 | 2019 | 中国科学:地球科学2019，49，4： | 5 |
| 3 | Effects of tide-surge interactions on storm surges along the coast of the Bohai Sea, Yellow Sea, and East China Sea显示文摘A two-dimensional coupled tide-surge model was used to investigate the effects of tide-surge interactions on storm surges along the coast of the Bohai Sea, Yellow Sea, and East China Sea. In order to estimate the impacts of tide-surge interactions on storm surge elevations, Typhoon 7203 was assumed to arrive at 12 different times, with all other conditions remaining constant. This allowed simulation of tide and total water levels for 12 separate cases. Numerical simulation results for Yingkou, Huludao, Shijiusuo, and Lianyungang tidal stations were analyzed. Model results showed wide variations in storm surge elevations across the 12 cases. The largest difference between 12 extreme storm surge elevation values was of up to 58 cm and occurred at Yingkou tidal station. The results indicate that the effects of tide-surge interactions on storm surge elevations are very significant. It is therefore essential that these are taken into account when predicting storm surge elevations. | XU JunLi ZHANG YuHong CAO AnZhou LIU Qiang LV XianQing | 2016 | Science China Earth Sciences2016，59，6： | 2 |
| 4 | 上层海洋对热带风暴“天鹰”的响应显示文摘根据2005年7、8月份锚系温盐和海流观测资料并结合卫星遥感数据,重点关注海南岛东南侧热带风暴影响区域,研究了2005年第8号热带风暴'天鹰'引起的上层海水降温机制,分析结果表明:热带风暴过境期间,海表面有着显著的降温,且台风路径右侧海表温度下降的幅值和范围要远大于左侧;观测点处,海表温度下降2~4℃,混合层加深10~20 m,海洋热容量变化为-10^-20 k J·cm^(-2),上升流及垂向夹卷对于海洋热容量的变化有着最重要的作用,是导致海表温度下降的主要原因。而在海表温度降低过程中,通过比较发现,垂向的夹卷相较于上升流又占据着主导作用。 | 蒋晨 张书文 伊小飞 曹智勇 | 2016 | 广东海洋大学学报2016，36，3： | 1 |
| 5 | Upper ocean near-inertial response to the passage of two sequential typhoons in the northwestern South China Sea显示文摘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. | Yonggui MA Shuwen ZHANG Yiquan QI Zhiyou JING | 2019 | Science China Earth Sciences2019，62，5： | 0 |
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