The hydrodynamic regime at John Brewer Reef, Great Barrier Reef: Mooring CM1: Tide Gauge

An Aanderaa water level recorder was attached to mooring CM1, located north west of John Brewer Reef and in the free stream. The mooring was deployed in 42m of water. Deployment Details:Date Deployed: 31/3/1987Date Recovered: 25/8/1987Instrument Deployed:Aanderaa WLR #W425Depth: 38m The aim of this project was to collect field data to calibrate a numerical model for the combined tidal and wind-forced circulation at John Brewer Reef, and to apply those circulation patterns to calculate the trajectories, residence times and likelihood of outbreaks of crown-of-thorns starfish on areas of the reef. Tide gauges were placed at the corners of the model (moorings CM1, CM2, CM4 and TG1) and in the centre of the model, close to John Brewer Reef (TG2). The mooring CM1 drifted from its original position and only data up to the 27/5/87 are considered reliable. Mooring CM4 drifted to the Whitsunday Islands and the data were not considered reliable.

一台安达拉水位记录仪（Aanderaa water level recorder）被部署安装于锚系（mooring）CM1上，该锚系位于约翰·布鲁尔礁西北侧的开阔流场中。本次锚系布设水深为42米。布设详情如下：部署日期：1987年3月31日；回收日期：1987年8月25日；部署仪器：安达拉WLR #W425；布设深度：38米。
本项目的核心目标为采集现场实测数据，以校准适用于约翰·布鲁尔礁海域潮汐与风强迫联合环流的数值模型（numerical model），并基于该环流模式计算长棘海星（crown-of-thorns starfish）在礁区的扩散轨迹、滞留时长及暴发概率。
潮位计（tide gauge）被布设于模型区域的四个角点（锚系CM1、CM2、CM4及测站TG1）与模型中心靠近约翰·布鲁尔礁的位置（TG2）。锚系CM1偏离了初始布设位置，仅1987年5月27日之前的观测数据被认定为可靠。锚系CM4漂移至圣灵群岛（Whitsunday Islands）海域，其采集的数据均不具备可靠性。