List of earthquakes in Indonesia
This is an incomplete list of more recent recorded major earthquakes that have occurred within the boundaries of Indonesia. The determinants of the activity are indicated by the geology of the region, and the volcanic activity.
Large numbers of earthquakes of smaller magnitude occur very regularly due to the meeting of major tectonic plates in the region. Based on the records of the USGS, Indonesia has had more than 150 earthquakes with magnitude > 7 in the period 1901–2019.
The United States Geological Survey ranks Indonesia as the most seismically active country in the world, followed by Chile and Japan. On average, there is a magnitude 7 earthquake every year and one of magnitude >8 every 5 to 7 years. A magnitude 9 event possibly occurs every 100 years somewhere in the country, although these can generate other events of similar or lower magnitude in chains, as was the case with the 9.3 magnitude Aceh earthquake in 2004, which, due to subsequent tectonic stress, caused the major earthquakes of magnitude 8.7 in 2005, 8.5 in 2007, and 8.6 and 8.2 in 2012.