IMOS - ACORN - Bonney Coast HF ocean radar site (South Australia, Australia) - Delayed mode sea water velocity

The Bonney Coast (BONC) HF ocean radar system covers an area of the Bonney Coast, South Australia, which has a recurring annual upwelling feature near to the coast that significantly changes the ecosystem from one of warm water originating in Western Australia, to one dominated by cold upwelling water from off the continental shelf. The dynamics of this area and the relationship between ocean circulation, chemistry and sediments control the larval species and the higher marine species and ecosystems in which they forage.

The data from this site provide linking observations between the Southern Ocean and NSW through processes that occur on weekly to El Nino time scales.

The BONC HF ocean radar system consists of two SeaSonde crossed loop direction finding stations located at Nora Creina (37.329 S 139.850 E) and Blackfellows Cave (37.940 S 140.457 E). These radars operate at a frequency of 5.211 MHz, with a bandwidth of 50 KHz, a maximum range of 200 Km and a range resolution of 3 Km. Within the HF radar coverage area surface currents are measured.

This site was decommissioned in March 2017.

邦尼海岸（Bonney Coast, BONC）高频（HF）海洋雷达系统覆盖澳大利亚南部邦尼海岸海域。该海岸附近存在年度周期性上升流现象，这一过程显著改变了该海域的生态系统组成：从源自西澳大利亚的暖水环境，转变为以大陆架外冷上升流为主的生态系统。该区域的海洋动力学特征，以及海洋环流、化学环境与沉积物之间的相互作用，调控着幼体物种及其赖以觅食的高营养级海洋物种与相关生态系统的存续与动态。

本站点的观测数据可通过周尺度至厄尔尼诺（El Niño）时间尺度的物理过程，提供南大洋与新南威尔士州（New South Wales, NSW）之间的关联观测资料。

BONC高频海洋雷达系统包含两座SeaSonde交叉环测向站，分别设于诺拉·克赖纳（Nora Creina，南纬37.329°，东经139.850°）与布莱克弗洛斯洞穴（Blackfellows Cave，南纬37.940°，东经140.457°）。该雷达工作频率为5.211 MHz，带宽50 kHz，最大探测距离200千米，距离分辨率为3千米，可在其覆盖海域内获取表层海流观测数据。

该站点已于2017年3月正式退役。