Japan Geoscience Union Meeting 2021

convener:Ryota Hino(Graduate School of Science, Tohoku University), Katsunori FUJIKURA(Japan Agency for Marine-Earth Science and Technology), Motoyuki Kido(International Research Institute for Disaster Science, Tohoku University), Chairperson:Shuichi Kodaira(Research Institute of Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology), Motoyuki Kido(International Research Institute for Disaster Science, Tohoku University)

The 2011 Tohoku-Oki Earthquake prompted active research in a wide range of fields of earth science. Through researches on the generation mechanism and recurrence history of the earthquake associating massive tsunami itself, as well as researches on various kinds of large-scaled postseismic phenomena progressing over a broad area after the earthquake, a number of important aspects of the earth interior has been brought about. This earthquake also served as a turning point in research on forecasting of earthquakes and tsunamis, highlighting the difficulty of long-term forecasting of low-frequency but gigantic earthquakes and tsunamis, while promoting research and development on early warning technologies based on real-time observations. Furthermore, the huge earthquake and tsunami, as well as the nuclear power plant accident, gave a significant impact on the natural environment over a wide area centered on eastern Japan. Earth scientists have made significant effort to understand the actual situation of the impact and also to monitor the temporal variation. On the other hand, lively discussions have been held on how the knowledge gained through such energetic research activities can be utilized for disaster prediction / countermeasures and recovery from disasters. In this session, we will discuss the path that earth science research should take in the future, based on the results of research in the 10 years since the 2011 Tohoku-Oki Earthquake and the Disaster.