実海域におけるGPS波浪計・津波計の性能確認実験

抄録

A new sea level observation system has been developed using GPS (Global Positioning System) technique to detect the ocean waves, tide and tsunami before it reaches the coast. The system consists of a buoy on the sea, which has the GPS antenna in the top part, and a GPS antenna on land. We employed real-time kinematic (RTK)-GPS technology to monitor a moving buoy in real-time with an accuracy of a few centimeters by relative positioning. After the basic experiment was carried out in Sagami Bay in 1998, the practical application experiment has been executed at the position about 2km away from the coast of Ofunato city since 23^rd January 2001. This paper reports the summary of the new measurement system to observe the sea level, and the findings of an efficiency experiment in the ocean.