The structure of the Pacific equatorial countercurrent
The structure of the Pacific equatorial countercurrent
复制标题
太平洋赤道逆流的结构
DOI：
10.1029/jz066i001p00143
复制
发表时间：
1961
影响因子：
--
通讯作者：
J. Knauss
中科院分区：
文献类型：
--
作者：
J. Knauss
太平洋赤道逆流自西向东流经整个太平洋，在赤道以北几百英里处。1955-1959年期间，我们在东太平洋进行了三次考察，研究了该海流的速度结构，本文对这些结果作了总结。(1)最不寻常的观察结果是关于运输的变化。1958年8月，运输量超过60× 106 m3/sec。11个月后，它几乎为零。(2)直接海流测量表明，海流大致处于地转平衡状态。(3)有一些迹象表明，埃克曼漂流流叠加在地面的地转流上。(4)表面电流每天都有相当大的变化。表层流的平均速度（在研究区域）向东增加，表层流的均方根变化随着平均速度的增加而增加。
The Pacific equatorial countercurrent flows from west to east across the entire Pacific, a few hundred miles north of the equator. The velocity structure of this current in the eastern Pacific has been studied on three cruises during the period 1955–1959; in this paper the results of the work are summarized. (1) The most unusual observation concerns the variation in transport. In August 1958 the transport was in excess of 60×106m3/sec. Eleven months later it was nearly zero. (2) Direct current measurements indicate that the current is in approximate geostrophic balance. (3) There is some indication of an Ekman drift current superimposed on the geostrophic current at the surface. (4) There is considerable day-to-day variation in the surface current. The mean speed of the surface current (in the region studied) increases to the east and the rms variation of the surface current increases as the mean speed increases.