The Kyushu Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism has placed four High-Frequency Oceanic Radar (HF radar) at the Ariake Sea since 2005. The system named “The Ariake Sea current and ocean wave information system” provides the real-time information on surface currents and waves on the Internet.
This paper presents the results of the comprehensive investigations on (1) the accuracy of HF radar observation, (2) the expansion of the current observation area, and (3) the improvement of the ocean wave observation. These inclusive studies come to the conclusions that the accuracy of ocean radar was verified satisfactory, and the expected improvements of the system for measuring currents as well as waves were successfully achieved.
