The GNSS buoy system for tsunami early warning has been developed. The system was used to update the tsunami warning at the 2011 Tohoku-oki earthquake. However, the buoys were placed only less than 20km from the coast, which was not far enough for effective evacuation of people. Thus, we are trying to improve the system for putting the buoy much farther from the coast. The present study shows recent results of a series of experiments to this end. Given the success of experiments, we will try to apply the GNSS buoy for various applications for geohazards monitoring and earth sciences. Examples are: application of GNSS-acoustic system for continuous monitoring of ocean bottom crustal movements, monitoring ionosphere and atmosphere. Our current project will try to design a new challenging regional GNSS buoy array in the western Pacific for synthetic geohazards monitoring.
展开▼
