Mw 9.0 Japan Earthquake Slip Distribution Inversion Based on IGS GPS Measurements

The changes of the Earth's surface displacement field observed by GPS are the direct response about Earth's interior stress field in the ground. In the article the authors computed seven GPS stations' data by GAMIT/GLOBK software and analyzed the GPS stations' coordinate series. The change of MIZU station's coordinate is the biggest, which the change values of east direction achieved 2.2 meters, the change values of north direction reached 1.7 meters, and the change values of vertical direction was 0.4 meters. As the MIZU station is the nearest station from the earthquake epicenter, the coordinate change of the station in NEU directions is the biggest in seven stations.