A devastating Mw 9.3 Sumatra-
Andaman Earthquake occurred on 26 December
2004 at 00:58:53 UTC (07:58:53 Thai time,
Universal Coordinate Time, UTC+7 hrs = Thai
Time, all time data here in UTC) off the west coast
of Northern Sumatra, Indonesia, in the Sunda
subduction zone (USGS, 2005) (Figure 1).