基于南海北部浮标和潜标的声学多普勒流速剖面仪(ADCP)数据，通过一套几何算法计算了台风海鸥(1415)期间ADCP的空间变化和流速误差，并进行数据校正。浮标上，台风过后ADCP的水平位移最大可达2.61 km，水平流速误差最大可达0.27 m/s，垂向流速误差最大仅为5×10-4 m/s；温跃层流速校正值在台风过后显著大于流速测值，这表明水平校正对于温跃层流速的质量控制很重要。潜标上，ADCP最大垂向位移增量为179 m，最大绳子倾角为35°，最大水平位移为1.5 km；ADCP水平流速误差和倾角误差都很小，在数据校正中可忽略不计，但对台风过后中层流速的垂向校正不能忽略。

Based on the Acoustic Doppler Current Profiler (ADCP) data of buoy and mooring during Typhoon Kalmaegi (1415) in the northern South China Sea, a set of algorithms were proposed to calculate the spatial variation, data bias and correction. On buoys, the maximum horizontal displacement of ADCP can reach 2.61 km, the maximum horizontal velocity bias can reach 0.27 m/s, but the maximum vertical velocity bias is only 5×10-4 m/s after the typhoon. The velocity in thermocline of horizontal correction after typhoon is prominently larger than the observed velocity, indicating the horizontal correction is necessary for the quality control of the thermocline velocity. On moorings, the maximum displacement increments on the mooring are closed to 179 m, the maximum rope tilt angle can reach 35°, the maximum horizontal displacement of ADCP can reach 1.5 km. The horizontal velocity bias and tilt bias of ADCP are small to be ignored,the vertical correction can not be ignored for velocity of middle layer after typhoon.