*John L LaBrecque¹、Diego Arcas²、Gerald Bawden³、Allison B. Craddock⁴、Lorraine Hwang⁵、Shunichi Koshimura⁶、Basara Miyahara⁷、Yasuku Ohta⁸、John Rundle⁹ (1.Chair, IUGG Commission on Geophysical Risk and Sustainability (GeoRisk Commission)、2.NOAA Center for Tsunami Research 、3.NASA Headquarters, Natural Hazards Research and GNSS Science Team、4.Director, Central Bureau IGS & Jet Propulsion Laboratory、5.Director Computational Infrastructure for Geodynamics, Univ. Califorinia, Davis、6.International Research Institute of Disaster Science, Tohoku University、7.President, Global Geodetic Observing System & Director, Space Geodesy Div. , Geospatial Information Authority of Japan 、8.Graduate School of Science, Tohoku University、9.Professor, Univ. California, Davis)