1984 D. Sci., Univ. Tokyo 1984 Radio Res. Lab. 1990 Dept. Geol. Sci., Univ. Durham 1994 Nat. Astr. Obs., Japan 2004 Hokkaido Univ.
Hokkaido University
Sapporo, Hokkaidō, Japan
Shanghai Astronomical Observatory
Shanghai, China
Fellow
American Geophysical Union
2019 Class of Fellow
Bowie Lecturer
American Geophysical Union
2011 Bowie Lecturer
Fellow
International Association of Geodesy
2007 IAG Fellow
Fellow
Japan Geoscience Union (JPGU)