The hydrodynamic regime at John Brewer Reef, Great Barrier Reef: Mooring CM12: Current Meter

A S4 current meter was attached to mooring CM12, which was deployed in 47m of water. Deployment Details:Date Deployed: 31/3/1987Date Recovered: 5/9/1987Instrument Deployed:S4 #S631; Depth: 25m 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. The locations for moorings CM6, CM7, CM8 and CM12 were chosen on the basis of results from a complementary project, where numerical models of hydrodynamics and dispersion were used to simulate the wind, tidal, long-period current and wave circulation around GBR reefs, for examination of dispersal of larvae of the crown-of-thorns starfish.

一台S4型海流计（S4 current meter）被布设安装于锚系CM12上，该锚系布放于47米水深海域。布放详情：布放日期：1987年3月31日；回收日期：1987年9月5日；布放仪器：S4型海流计，编号S631；仪器布设深度：25米。本项目旨在采集现场实测数据，以校准适用于约翰·布鲁尔礁（John Brewer Reef）潮汐与风驱复合环流的数值模型，并依托该环流模式计算该礁域内长棘海星（crown-of-thorns starfish）的扩散轨迹、驻留时长以及暴发概率。锚系CM6、CM7、CM8与CM12的布设点位，均基于一项配套研究的结果选定：该研究依托水动力与扩散数值模型，模拟了大堡礁（Great Barrier Reef, GBR）周边礁体海域的风场、潮汐、长周期海流与波浪环流过程，以探究长棘海星幼体的扩散规律。