Current meter deployments, North Reef, southern Great Barrier Reef (SGBR Project 1989-1990)

An acoustic current meter, an Aanderaa RCM7 rotary current meter and an Aanderaa RCM5S rotary current meter were deployed on a single mooring at North Reef (Station CM3). Two consecutive deployments of these current meters were made in 152 meters of water. Deployment 1: Date deployed: 29/8/89 (SGBR1) Date recovered: 24/10/89 (SGBR2)Instruments:SACM; Depth: 12m; Deployment Code: NT11RCM7 #9139; Depth: 22m; Deployment Code: NT12RCM5S #7350; Depth: 77m; Deployment Code: NT13Deployment 2: Date deployed: 24/10/89 (SGBR2) Date recovered: 24/02/90(SGBR3)Instruments:SACM; Depth: 82m; Deployment Code: NT21RCM7 #9139; Depth: 92m; Deployment Code: NT22RCM5S #7350; Depth: 147m; Deployment Code: NT23Sampling Intervals:SACM: 60 mins integrating for 20 min centered on the hourRCM7: 60 minsRCM5S: 60 mins with 16 revs per count These deployments were components of the SGBR Project 1989-1990.

本次观测将声学海流计（acoustic current meter，简称SACM）、安德拉RCM7旋转式海流计（Aanderaa RCM7 rotary current meter）以及安德拉RCM5S旋转式海流计（Aanderaa RCM5S rotary current meter）布放于北礁CM3测站的单根锚系之上。该海流计组先后开展两期连续布放作业，作业海域水深为152米。第一期布放：布放日期为1989年8月29日（编号SGBR1），回收日期为1989年10月24日（编号SGBR2）。各仪器参数如下：声学海流计（SACM）布放深度12米，布放编号NT11；RCM7 #9139布放深度22米，布放编号NT12；RCM5S #7350布放深度77米，布放编号NT13。第二期布放：布放日期为1989年10月24日（编号SGBR2），回收日期为1990年2月24日（编号SGBR3）。各仪器参数如下：声学海流计（SACM）布放深度82米，布放编号NT21；RCM7 #9139布放深度92米，布放编号NT22；RCM5S #7350布放深度147米，布放编号NT23。采样参数设置如下：声学海流计（SACM）以整点为中心开展20分钟积分，采样间隔为60分钟；RCM7采样间隔为60分钟；RCM5S采样间隔为60分钟，每计数对应16转。本次两期布放作业均为1989-1990年度SGBR项目的组成部分。