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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.
Tsunamis there are relatively rare despite earthquakes being relatively frequent in Indonesia. The last major tsunami was caused by the 1883 eruption of Krakatoa. Not every earthquake produces large tsunamis: on 28 March 2005, a magnitude 8.7 earthquake hit roughly the same area of the Indian Ocean but did not result in a major tsunami.
There is a large number of smaller natural disasters in Indonesia each year which often lead to deaths of 10 or 20 people or more. For example, landslides (tanah longsor) are very common in upland areas, especially during the rainy season, and cause much local damage and deaths. [6] Flooding is also a regular problem across many parts of Indonesia.
The earthquake caused major soil liquefaction in areas in and around Palu. [16] In two locations this led to mudflows in which many buildings became submerged causing hundreds of deaths with many more missing. [17] The liquefaction was considered to be the largest in the world and was deemed as rare. [18] [16]
The 2012 Indian Ocean earthquakes were magnitude 8.6 and 8.2 M w undersea earthquakes that struck near the Indonesian province of Aceh on 11 April at 15:38 local time. . Initially, authorities feared that the initial earthquake would cause a tsunami and warnings were issued across the Indian Ocean; however, these warnings were subsequently can
Indonesia is a country located close to tectonic plate boundaries which causes it to have many active faults and is prone to earthquakes, [1]
The island of Java is the most densely populated island on Earth, and is vulnerable to both large earthquakes and volcanic eruptions, due to its location near the Sunda Trench, a convergent plate boundary where the Australian tectonic plate is subducting beneath Indonesia. Three great earthquakes occurred in the span of three years to the ...
A major earthquake in Yogyakarta on 27 May 2006 killed 5,716 people. [10] A magnitude 7.7 earthquake caused a tsunami around west and central Java on 17 July 2006 and killed 668 people. [11] The 2009 Sumatra earthquakes on 30 september caused severe damages in Western Sumatra, killing around 1,110 people and leaving 2,180 injured. [12]