赤道暖池区漂流浮标运动轨迹分析

ANALYSIS OF THE TRACKS OF FLOATING BUOYS IN THE EQUATORIAL WARM POOL

TOGA—COARE强化观测期间,对赤道暖池区海流作了多种方法、多层次的观测;根据美国释放的漂流浮标不同时刻位置的资料,分别对赤道及其南、北海域的表层漂流状况作了计算分析,指出:从1°N向北存在单一的北向流;从1°N～1°S这个近赤道区域内为东向流;1°N～2°S区域为过渡区,以东向流为主,个别浮标出现涡旋状运动。2°S以南为一反时针运动的大涡旋。

In the Intensive Observing Period (IOP) of TOGA -COARE from October 1992 to February 1993, current velocities have been observed using many methods. According to the floating buoy tracks. we have calculated the current velocities at the equator and on both sides of the equator. The results show that there is a northward flow between 1°N to 6°N, an eastward flow between 1°N to 1°S, and an anticlockwise circulation between 2°S to 4°S. There is also a transitional region between 1° N-2°S.