阿留申群岛阿图岛水道多年夏季水文特征分析  

Summer Hydrological Characteristics Analysis of the Near Strait,Aleutian Islands

作　　者：陈红霞 刘健康 张学宏 刘敏 林丽娜 刘娜 CHEN Hongxia;LIU Jiankang;ZHANG Xuehong;LIU Min;LIN Lina;LIU Na(First Institute of Oceanography,MNR,Qingdao 266061,China;Laboratory for Regional Oceanography and Numerical Modeling,Laoshan Laboratory,Qingdao 266061,China;Key Laboratory of Marine Science and Numerical Modeling,MNR,Qingdao 266061,China;Chinese People’s Liberation Army 91001 Unit,Beijing 100841,China)

机构地区：[1]自然资源部第一海洋研究所,山东青岛266061 [2]崂山实验室区域海洋动力学与数值模拟功能实验室,山东青岛266061 [3]自然资源部海洋环境科学与数值模拟重点实验室,山东青岛266061 [4]中国人民解放军91001部队,北京100841

出　　处：《海洋科学进展》2024年第4期634-642,共9页Advances in Marine Science

基　　金：中央级公益性科研院所基本科研业务费专项资金资助项目(GY022Y07)。

摘　　要：本文基于中国北极科学考察队2003年至2014年在阿图岛水道连续5个航次的CTD(Conductivity,Temperature, Depth,温盐深仪)站点观测数据,采用特征统计和时序分析方法,对水道多年夏季的分层结构、跃层特点和时序演变特征进行了分析研究。结果表明,阿图岛水道夏季垂向分层非常显著,密度和盐度均表现出4层的剖面结构,而温度表现为有时4层、有时5层的剖面结构。5个航次均存在跃层结构,其中温度跃变最为显著、密度次之、盐度最弱。在水道内未发现“海底断崖”,而“液体海底”特征显著。研究表明,水道的垂向分层受到夏季局地海表加热和上游海域上一年冬季强烈垂直对流混合的控制,海表加热和冬季残留水对其跃层结构特点有决定性作用。这一研究对于深入了解阿图岛水道附近海洋环境、气候变化、生态系统和资源利用等具有参考意义。Based on the CTD station observational data of five Arctic consecutive voyages of CHINARE(Chinese National Arctic Research Expedition)in the Near Strait from 2003 to 2014,the multi-year profile structure,characteristics of pycnocline and the“liquid seafloor”in the strait in summer are studied with characteristic statistics and time series analysis.The results show that the vertical stratification in the Near Strait is very significant in summer,and the density and salinity profiles both show a 4-layer structure,while the temperature profile shows a 4-layer or 5-layer structure.All the 5 voyages data exhibit a cline structure,in which the thermocline is most significant,followed by the pycnocline then the halocline.The“submarine cliffs”were not found in the strait,while the“liquid seafloor”is prominent.The study indicates that vertical stratification in the strait is controlled by local sea surface heating in summer and strong vertical convective mixing in upstream sea area in previous winter.Sea surface heating and residual winter water play a key role in the cline structure characteristics.This study is of great reference value for deeper understanding of marine environment,climate change,ecosystems,and resource utilization around the Near Strait.

关 键 词：中国北极科学考察队 阿图岛水道 液体海底 海底断崖 

分 类 号：P731[天文地球—海洋科学]