Events on the USGS list
The USGS table of the 20 largest earthquakes since 1900 includes four events this site groups as Sunda. Magnitudes, times, and epicenters below are copied from that table. The page does not add later earthquakes that USGS has not placed on that list.
| Earthquake | Mag | Time (UTC) | Epicenter |
|---|---|---|---|
| 2004 M9.1 Sumatra-Andaman | 9.1 | 2004-12-26 00:58 UTC | 3.3, 95.98 |
| 2012 M8.6 off northern Sumatra | 8.6 | 2012-04-11 08:39 UTC | 2.33, 93.06 |
| 2005 M8.6 Nias, Indonesia | 8.6 | 2005-03-28 16:10 UTC | 2.09, 97.11 |
| 2007 M8.4 southern Sumatra | 8.4 | 2007-09-12 11:10 UTC | -4.44, 101.37 |
The largest of the four is the 26 December 2004 Sumatra-Andaman earthquake, M9.1, 00:58 UTC, epicenter 3.30°N, 95.98°E. The 28 March 2005 Nias earthquake is M8.6. The 11 April 2012 earthquake off northern Sumatra is also M8.6, at a different epicenter. The 12 September 2007 southern Sumatra earthquake is M8.4. This page does not repeat casualty figures.
The rectangle is wider than Sumatra
This site’s Indonesia / Sunda / Banda rectangle runs from latitude −12 to 8 and longitude 95 to 141. All four epicenters fall inside it. So does a lot of ocean and island arc that those four points do not describe. The 1938 M8.5 Banda Sea earthquake is on the same USGS list and inside the same rectangle, and it is not one of these four. It is named on the largest-earthquakes page and is not given a second essay here.
Volcanoes in the same country file
Krakatau and Merapi are Smithsonian catalog points in Indonesia. A catalog volcano is not an epicenter from the 2004 earthquake, and a last-eruption year is not a magnitude. Use those pages for the volcano rows. Use this page for the four USGS earthquakes.