Nishikawa Yasuhiro

Nishikawa Yasuhiro is a planetary seismologist. After earning a master’s degree in earth and planetary sciences from the University of Tokyo, he completed a doctorate in earth, planetary, and environmental sciences at the University of Paris. He worked as an assistant professor at Kochi University of Technology before taking up his current position at Osaka Kyoiku University. Starting with natural waves emanating from earthquakes and sounds, he investigates the dynamics of the Earth and the universe. He is engaged in geoexplorations of infrasound (an inaudible ultra-low frequency sound) and seismic waves in extreme environments, including Mars, Antarctica, and the stratosphere. Nishikawa was part of NASA’s InSight program studying seismic activity on Mars as well as Japan’s 64th Antarctic Research Expedition. He has observed infrasound emitted by Mars, the re-entry of the Hayabusa2 and OSIRIS-REx asteroid probes, meteor shock waves, tsunamis, volcanic eruptions, glacial collapses, and other phenomena, using this to analyze the Earth’s inaudible sounds.Last Updated: 2025.11