海洋科学2024，Vol.48Issue(12)：13-26,14.DOI:10.11759/hykx20231113003
琼东温度锋面的季节和年际变化特征规律
Seasonal and interannual variation characteristics of Qiong-dong thermal front
摘要
Abstract
Based on the daily sea surface temperature(SST)data of remote sensing from 1982 to 2021,this study(a)analyzes the seasonal and interannual variation characteristics of SST fronts in the Qiongdong Sea area by using the Sobel algorithm and discusses the factors affecting formation of SST fronts in the Qiongdong Sea area by combin-ing wind field,flow field,sea level,Niño3.4 index,Pacific decadal oscillation index,and dipole mode index data.The results demonstrate that the Qiongdong thermal front exhibits a northeast-southwest trend along the 50-100 m isobath with notable seasonal variations.The front is strongest in winter,followed by spring,weakest in summer,and disappears in autumn.The maximum values of front intensity in the three seasons are 0.06℃/km(winter),0.05℃/km(spring),and 0.04℃/km(summer).From winter to summer,the center of the front moves from northeast to southwest.The analysis results also show that the characteristics and inducements of the summer front and the winter front are different and that they belong to different modes.In the past 40 years,the intensity of the Qiong-dong temperature hermal front has generally increased,and there have been interannual and interdecadal changes in it,with the change cycle of the front index being～5 years.The seasonal and interannual variations in the Qiong-dong thermal front are influenced by many factors,of which the local wind and current play an important role.关键词
海洋锋/遥感/琼东海域/季节变化/年际变化Key words
ocean front/remote sensing/Qiongdong sea area/season variation/interannual variation分类
海洋科学引用本文复制引用
刘腾,李淑江,侯华千,李颖,杨兵,孙伟富,王冠琳,梁冠辉,滕飞..琼东温度锋面的季节和年际变化特征规律[J].海洋科学,2024,48(12):13-26,14.基金项目
国家重点研发计划项目(2021YFC***1104) （2021YFC***1104）
国家自然科学基金创新群体项目(41821004) （41821004）
泰山学者工程专项(tstp20221148) （tstp20221148）
崂山实验室科技创新项目(LSKJ202201900)The National Key Research and Development Program of China,No.2021YFC***1104 （LSKJ202201900）
The National Natural Science Foundation of China,No.41821004 （）
Taishan Scholar Program,No.tstp20221148 （）
Technology Innovation Program of the Laoshan Laboratory,No.LSKJ202201900 （）
