摘要
内孤立波对大陆架边缘海区的混合和生态有着显著影响,近年来已成为物理海洋学研究的热点。但是南海北部陆架的内波现场资料极为缺乏。2005年4—7月,中国科学院海洋研究所在文昌海区进行了文昌内波实验。通过此次现场观测数据发现,在4月下旬文昌海域有着强盛的内孤立波,其振幅在40m左右,产生的斜压流接近1m/s,且传播方向平行于等深线切线方向,向西南方向传播。分析还得出此类内孤立波并非发源于吕宋海峡,应该属于潮地相互作用局地生成的内孤立波。
Thermistor chains and acoustic Doppler current profiles were deployed at the east of Hainan Island to examine the thermal and hydrodynamic structure of the Wenchang Shelf. These instruments sampled temperature every minute and current velocity every 10 rain from April 17^th to July 21 in 2005. Analysis of the time series revealed that the in situ data were dominated by internal solitary wave packets signals. We found large-amplitude nonlinear internal solitary waves at the end of April and they propagated to the southwest paralleling with the isobaths in this area. They probably resulted from the local shelf break and were rarely observed in SAR data.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
2009年第3期269-274,共6页
Oceanologia Et Limnologia Sinica
基金
国家863资助项目,2006AA09A109-2号
中国科学院知识创新工程重大项目资助,KZCX1-YW-12号
关键词
南海
文昌
内孤立波
现场观测
斜压流
South China Sea, Wenchang, Internal solitary wave, Observation, Baroclinic current
