文献类型：期刊文献

英文题名：Statistical Analysis of Mesoscale Eddies Entering the Continental Shelf of the Northern South China Sea

作者：Zhang, Tao[1,2];Li, Junyi[1,3,4];Xie, Lingling[1];Zheng, Quanan[1,5]

机构：[1]Guangdong Ocean Univ, Lab Coastal Ocean Variat & Disaster Predict, Zhanjiang 524088, Peoples R China;[2]Minist Nat Resources, Inst Oceanog 4, Beihai 536000, Peoples R China;[3]Key Lab Continents Deep Sea Climate Sources & Env, Zhanjiang 524088, Peoples R China;[4]MNR, Key Lab Space Ocean Remote Sensing & Applicat, Beijing 100081, Peoples R China;[5]Univ Maryland, Dept Atmospher & Ocean Sci, College Pk, MD 20742 USA

年份：2022

卷号：10

期号：2

外文期刊名：JOURNAL OF MARINE SCIENCE AND ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000763611100001)、、WOS

语种：英文

外文关键词：mesoscale eddy; continental shelf; path classification; feature statistic of eddies; northern South China Sea

外文摘要：An Archiving, Validation and Interpretation of Satellite Oceanographic data (AVISO) mesoscale eddy trajectory atlas product is used to analyze the path type and temporal variability of the eddies that entered the continental shelf area of the northern South China Sea (SCS) from 1993 to 2016. A total of 184 mesoscale eddies entered the continental shelf area of the northern SCS during a 24-year period. We classify the mesoscale eddies into four types according to the motion trajectories: along-the-isobath type, intrusion-of-continental-shelf type, local wandering type, and shelf-internal-generation type. The occurrence numbers of these four types were 87, 38, 23, and 36, respectively. The mean amplitude and radius of the along-the-isobath type are the largest, about 18 cm and 153 km, respectively; furthermore, their average lifetime is also the longest, about 93 days. The mean amplitude, radius, and lifetime are the smallest for the shelf-internal-generation type, about 16 cm, 146 km, and 74 days, respectively. The direction and velocity of the background flow field affects the intrusion path of the mesoscale eddies onto the continental shelf of the northern SCS. The seasonal distribution of the mesoscale eddies quantity is also related to the direction and velocity of the corresponding background flow field.