Last Updated : October 8, 2007

Southern Sumatra Earthquake in 2007

Crustal Deformation Observed by Synthetic Aperture Radar (SAR)

Released:2007.10.02 Last update: 2007.10.08 JAPANESE


  1. Coseismic displacements in Line-of-sight (LOS) direction were measured
    as changes of range between ground suface and the satellite at the West
    sky. The maximum displacement is about -2 m, which is displacement toword
    the satellite.
  2. There are two discontinuities of phase in Pagai island (Pulau Pagai), as
    shown in the broken lcurves. Some field survey team will probably find
    surface rupture. The rupture should not be the earthquake source fault.
  3. Emergence due to uplift was observed in South Pagai island (Pulau Pagai

Satellite and Sensor

PALSAR sensor onboard "Daichi" (ALOS) satellite launched by Japan Aerospace Exploration Agency on January 24, 2006

Suthern Sumatra Earthquake in 2007

Date-time September 12, 2007 18:10 (Local time), 20:10 (JST), 11:10 (UTC)
Hypocenter location 4.520°S, 101.374°E Depth:34 km
Magnitude 8.4 (USGS)