Physical properties under high pressure (4GPa)Mineral physicsP and S anisotropyReaction rate of phase changeOcean bottom seismologyOBS designPop-Up OBSSeismic refracion studies in western, central, and eastern Pacific, Atlantic. Indian Ocean, and Marumara-sea over more than 15,000kmComputer graphicsTsunami studyVolcanologyRefraction seismic processingWell data and 3D seismic TieLogging tool designUse of submarine cables for the sumarine geophysical observationOBC designCrustal structure analysis for the exended continental shelf surrounding JapanAdivisor for the aboveSuper conductivity seismic VibratorPeizo type low frequeny seismic sourceGravity tensor analysisGravity tensor instrumental designTime lapse studies using ultara-stable seismic source for EOR, CCS, PRM and shale gas explorationGeothermal exploration and super-critical water sciencesFull-wave seismic inversion