大亚湾1988年秋季水温层化的消退过程  

Autumn process of temperature destratification in Daya Bay,1988

作　　者：陈义斌[1] 李立[1] 

机构地区：[1]国家海洋局第三海洋研究所,厦门361005

出　　处：《台湾海峡》1993年第2期145-151,共7页Journal of Oceanography In Taiwan Strait

基　　金：国家自然科学基金资助项目第49070260号

摘　　要：本文利用1988年大亚湾海洋生态零点调查水文气象观测资料,分析讨论了1988年秋季大亚湾水温层化的消退过程。结果表明,该层化消退过程与1987年秋季的类似,始于9月初,历时约10d。消退过程主要表现为夏季侵入湾内的下层外海冷水和伴随它形成的强温跃层向外海退却。消退过程结束后湾内水柱平均温度升高,热含量增加。综合两年的观测结果表明:该水温层化消退是大亚湾夏秋之交出现的一种规律性的季节现象,可能是季风转变时陆架环流动力调整作用于大亚湾的结果。Based on hydrometeorological data from Marine Ecology Zero Point Survey of Daya Bayin 1988,the autumn process of temperature destratification in the Daya Bay is analyzed anddiscussed.The result indicates that the process of destratification of 1988 is similar to that1987,which starts in early September,and lasts about 10d.The destratification process isfeatured by the retreat of summer intruded bottom cold water,and the withdraw of strongsummer thermacline,which accompanies the intrusion,toward the open sea.After the pro-cess,both vertical mean temperature and heat content of the water column increases.It isproved by biannual observation results that temperature destratification in the Daya Bay is aregular seasonal phenomenon occurring during the transit period between summer and au-tumn,and the process possibly results from dynamic adjustment of shelf circulation duringthe monsoon transition which interacts with Daya Bay.

关 键 词：温度结构 秋季 南海 海水 消退过程 

分 类 号：P731.11[天文地球—海洋科学]