HLY-02-03 ADCP Data (10-min Averages) [Muenchow, A.]

The United States Coast Guard Cutter (USCGC) Healy contains a 75-kHz phased-array Acoustic Doppler Current Profiler (ADCP) (Ocean Surveyor) mounted under the hull to transmit and receive echos of acoustic pulses from which to estimate vertical profiles of horizontal currents. Attitude information such as heading, pitch, and roll is provided by an Ashtech ADU2-3DGPS receiver while position data are provided by a Trimble Centurion p-code DGPS system. These data streams provide earth-referenced absolute horizontal currents and their vertical variations from about 20-m below the surface to the bottom or about 400-m depth. These data are 10 minute averages.美国海岸警卫队希利号巡逻舰（United States Coast Guard Cutter，缩写USCGC Healy）船底搭载有一台型号为Ocean Surveyor的75kHz相控阵声学多普勒流速剖面仪（Acoustic Doppler Current Profiler，简称ADCP），该设备用于发射与接收声学脉冲回波，进而估算水平流速的垂直剖面。姿态信息（涵盖航向、俯仰与横滚）由Ashtech ADU2-3DGPS接收机提供，位置数据则由天宝（Trimble）Centurion P码差分全球定位系统（DGPS）提供。上述数据流可输出基于地球参考系的绝对水平流速及其垂直变化数据，测量覆盖范围为海面下约20米至海底，最大测量深度约400米。所有数据均为10分钟的平均值。