论文部分内容阅读
利用1993—2006年1~12月AIPO(The joining area of Asia and Indian-Pacific Ocean)流场数据,分析了吕宋海峡120°E断面水交换流速结构的平均月际变化特征,并计算了通过该断面的水通量,探讨了水通量及其垂向结构的月际和季节变化特征。结果表明:1在断面的南北方向,西向流和东向流分别大致以19.5°N和21.5°N线为界,二者交替相间分布,呈“两进(西向流入南海)两出(东向流出南海)”的结构;21.5°N以南的300 m以深和21.5°N以北的1 000 m以浅海域,常年存在南海水东向流入太平洋。2上层、深层和整个断面的净水通量几乎均为西向流,净水通量冬季最大,春季和秋季次之,夏季最小。中层除12月外,其他各月的净水通量均为东向流出南海,净水通量春季最大,夏季和秋季次之,冬季最小。3整个断面的净水通量,1~5月和8~11月呈“三明治”结构,6~7月呈2层结构;12月呈单层结构,年平均呈“三明治”结构。
Based on the flow field data of AIPO (The joining area of Asia and Indian-Pacific Ocean) from January to December in 1993-2006, the average monthly variation of water exchange velocity structure at 120 ° E section of the Luzon Strait was analyzed. The water flux of this section explores the monthly and seasonal variations of water flux and its vertical structure. The results show that: 1 In the north-south direction of the cross-section, the westerlies and the eastward streams are roughly bounded by 19.5 ° N and 21.5 ° N lines, respectively, alternating with each other in two phases (in the westward flow into the South China Sea) Outflowing South China Sea); shallow waters of 300 m deep south of 21.5 ° N and 1000 m north of 21.5 ° N, with annual southward flow of water into the Pacific Ocean. The fluxes of water fluxes in the upper, middle and whole sections are almost all in the west direction. The fluxes of fresh water are the largest in winter, followed by the spring and autumn, and the lowest in summer. The net water fluxes of all the other months were all eastward out of the South China Sea except for the middle of December. The net flux of fresh water was the largest in spring, followed by summer and autumn and the lowest in winter. 3 The water fluxes of the whole section show a “sandwich” structure from January to May and from August to November, with a 2-layer structure from June to July; a monolayer structure in December with an average annual “sandwich” structure.