or listed missing after a 9.1 magnitude earthquake off Indonesia's Aceh province on Sumatra island triggers a tsunami. The toll in affected Indian Ocean countries reaches 230,000 dead.
March 28, 2005 - A magnitude 8.6 quake off Sumatra was estimated to have killed 1,300 people, many on Nias island off Sumatra's west coast.
Sept. 5, 2005 - Airliner operated by domestic carrier Mandala Airlines crashes in a residential area of Indonesia's third-biggest city, Medan, killing 102 aboard and 47 residents in an inferno on the ground.
May 27, 2006 - Earthquake rocks area around ancient royal city of Yogyakarta, killing at least 5,000 and destroying or damaging 150,000 homes.
July 17, 2006 - A tsunami after a 7.7 magnitude quake in West Java province kills at least 550. At least 54,000 are displaced.
Dec. 30, 2006 - A ferry with at least 600 aboard sinks during a storm as it travels between Borneo and Java. About 250 survivors are found in the days after the accident.
Jan. 1, 2007 - An Adam Air plane flying from Surabaya to Manado with 102 people aboard crashes into the sea off the west coast of Sulawesi.
March 6, 2007 - Two strong earthquakes kill at least 72 people and hurt dozens in the West Sumatra provincial capital of Padang.
Jan. 11, 2009 - Nearly 250 people missing after a ferry travelling from Pare-Pare on the west coast of Sulawesi to the city of Samarinda capsizes in bad weather. May 20, 2009 - About 100 people are killed when a military transport plane crashes in East Java.
Sept. 2, 2009 - A 7.0 magnitude quake strikes Java, killing more than 60 people. More than 25,000 are displaced by the quake, which hit just off the coast, and 86,000 homes are damaged, though no major power or industrial installations are hit.
Sept. 30 - More than 1,100 people are killed when a magnitude 7.6 quake struck off the city of Padang on the coast of Sumatra. Thousands of people were trapped in the rubble of collapsed buildings.
Oct. 25/26, 2010 - Mount Merapi, on the outskirts of the city of Yogyakarta on Java island erupts, killing more than 130 people and forcing the evacuation of nearly 300,000.
A day earlier, a tsunami pounded remote islands in western Indonesia, killing at least 445 people. The tsunami, triggered by a 7.5 magnitude quake that struck 78 km west of South Pagai, one of the Mentawai islands, flattened several villages and a surf resort.
Dec. 18, 2011 - A wooden boat, with a capacity of 100 people, breaks up and sinks in heavy seas about 90 km (55 miles) off Java. The vessel was carrying illegal immigrants from Iran, Iraq and Afghanistan and was heading to Australia. As many as 200 people died in the disaster.
April 11, 2012 - An 8.6 magnitude earthquake strikes some 308 miles (500 km) southwest of the city of Banda Aceh, on the northern tip of Indonesia's Sumatra island, at a depth of 20.5 miles (33 km), the US Geological survey says.