2010-2011年吕宋海峡西侧潜标观测的初步分析  

Preliminary analysis of observations by deep submersible mooring in west Luzon Strait during 2010 to 2011

作　　者：李子木[1,2] 蔡树群[1] 陈举[1] 陈荣裕[1] 王东晓[1] 杜岩[1] 

机构地区：[1]热带海洋环境国家重点实验室(中国科学院南海海洋研究所),广东广州510301 [2]中国科学院大学,北京100049

出　　处：《热带海洋学报》2014年第1期10-16,共7页Journal of Tropical Oceanography

基　　金：国家重点基础研究发展计划项目(2011CB403500;2011CB013701);国家杰出青年科学基金项目(41025019);科技基础性工作专项(2008FY110100)

摘　　要：2010 年在吕宋海峡西侧约3300m 深处的观测潜标得到了上层海洋9 个多月的高频率的流场和温盐数据, 用调和分析和功率谱分析等方法对观测结果进行分析, 发现测点春季的O1 潮较强, 而冬季K1 潮较强, 夏季内潮较弱, 但整体都为不规则日潮.台风“南玛都”经过后测点200~270m 次表层出现明显近惯性振荡, 其沿顺时针旋转, 能量下传.测量期间共有105 个孤立内波经过测点, 测点处冬季的孤立内波数量并不少于春夏季.两个相邻孤立内波间的时间间隔约为24.6~24.7 小时, 并不存在a 型波和b 型波的区别.A mooring system was placed at a depth of about 3300 m west of the Luzon Strait. Upper ocean current,temperature and salinity were measured at a high frequency for more than nine months. Using harmonic analysis and powerspectral analysis, we discover that at the measuring site, O1 tides had a greater amplitude in spring, and K1 tides had a greateramplitude in winter. In summer, the internal tides were relatively weak, but there were always irregular diurnal tides at ourobservation site. We observed near-inertial oscillations at a depth of 200~270 m after Typhoon Nanmadol passed by; theyrotated clockwise and the energy was transported downward. There were 105 internal solitary waves （solitons） passed byduring our observation period, while there were no less internal solitary waves in winter than in spring and summer. Thearrival times of two adjacent internal solitary waves differed by about 24.6~24.7 h, which cannot be divided into type-a wavesor type-b waves.

关 键 词：吕宋海峡 潮流 近惯性振荡 孤立内波 季节变化 

分 类 号：P714.12[天文地球—海洋科学]