IMOS - ACORN - Northwest Shelf HF ocean radar site (Western Australia, Australia) - Real-time sea water velocity

The Northwest Shelf (NWA) HF ocean radar system covers an area which includes the Ningaloo Peninsula and the Ningaloo Reef to the west. The Ningaloo Reef is one of the longest and most pristine reefs in the world. The reef is rich in marine biodiversity, with shark whales, turtles and fish aggregations, and high primary and secondary productions which are controlled by the physical oceanographic processes.

The NWA HF ocean radar is a WERA phased array system with 12-element receive arrays located at the Jurabi Turtle Centre (21.8068 S, 114.1015 E) and Point Billie (22.5432 S, 113.690 E). These radars operate at a frequency of 5.2625 MHz, with a bandwidth of 25 KHz and a maximum range of 200 Km. Within the HF radar coverage area surface currents are measured. Data are also collected from which wind directions and significant wave height can be calculated.

西北陆架（NWA）高频（High Frequency, HF）海洋雷达系统的覆盖范围包含西侧的宁格罗半岛与宁格罗暗礁。宁格罗暗礁是全球最长且保存最为完好的暗礁之一，其海洋生物多样性极为丰富，聚集有鲸鲨、海龟与各类鱼类，且初级与次级生产力水平较高，这些生态特征均受物理海洋过程调控。

该NWA高频海洋雷达为WERA相控阵系统，配备12元接收阵列，部署站点分别为朱拉比海龟中心（南纬21.8068°，东经114.1015°）与比利角（南纬22.5432°，东经113.690°）。该系列雷达工作频率为5.2625 MHz，带宽25 kHz，最大探测距离可达200 km。在高频雷达覆盖范围内可获取海面流场观测数据，同时可通过采集的原始数据反演得到风向与有效波高参数。