Technology Development for New Seafloor Crustal Deformation Observations Using ASVs and UAVs

GNSS-A seafloor crustal deformation observation is an important technology for earthquake disaster prevention and marine positioning. This paper describes recent progress in GNSS-A platform technology research. GNSS-A started with shipboard observations, but the application of self-propelled buoys and moored buoys began in the 2010s, and observations by Wave Gliders are now becoming mainstream. However, since it depends heavily on the marine environment and solar cells, there are many sea areas where observations are difficult. Therefore, we are conducting GNSS-A observation experiments using the new Autonomous Surface Vehicle UMIAILE and Space Entertainment Laboratory's Unmanned Aerial Vehicle HAMADORI. This paper describes the results of the most recent actual sea trials.