The 2007 Solomon Islands earthquake took place on 1 April 2007 near the provincial capital
of Ghizo on Ghizo Island, in the Solomon Islands. The magnitude of this earthquake was
calculated by the United States Geological Survey (USGS) as 8.1 on the moment magnitude
scale. The tsunami that followed the earthquake killed 52 people. The structural/house
damage was focused on Ghizo Island and was caused by the tsunami. First, the QuickBird
pan-sharpened composite images of Ghizo Island were acquired pre- and post-tsunami (23
September 2003 and 5 April 2007) to build house inventories for visual damage inspection,
as shown in Fig. 11 (Koshimura et al., 2010). The extent of the tsunami inundation zone is
determined by the supervised classification based on the NDVI of the post-tsunami satellite
imagery (Fig. 12), as already shown in section 2.1.