On September 28, 2018, a large earthquake of moment magnitude (Mw) 7.5 struck Sulawesi Island, Indonesia (United States Geological Survey [USGS], 2018). The earthquake occurred along the Palu-Koro Fault, which is known to be active and is influenced by the complex tectonic interaction of major subducting plates.
What caused the Indonesian earthquake?
The earthquake was caused by a rupture along the fault between the Burma Plate and the Indian Plate. … It caused the planet to vibrate as much as 10 mm (0.4 in), and also remotely triggered earthquakes as far away as Alaska. Its epicentre was between Simeulue and mainland Sumatra.
Did Japan have a tsunami?
Authorities issued a tsunami warning for Japan on Saturday after a magnitude 7.2 earthquake struck off the coast of Miyagi prefecture. Tsunami waves of up to 1 meter (3.2 feet) hit land shortly after the earthquake, local television channel NHK reported.
How much did the Indonesian tsunami cost 2018?
Indonesia’s National Disaster Management Agency (BNPB) puts the total cost of material damages at USD 910 million.
What country was destroyed by a tsunami?
The tsunami killed at least 225,000 people across a dozen countries, with Indonesia, Sri Lanka, India, Maldives, and Thailand sustaining massive damage. Indonesian officials estimated that the death toll there alone ultimately exceeded 200,000, particularly in northern Sumatra’s Aceh province.
Can a tsunami come without an earthquake?
No, all earthquakes do not cause tsunamis. There are four conditions necessary for an earthquake to cause a tsunami: (1) The earthquake must occur beneath the ocean or cause material to slide in the ocean. (2) The earthquake must be strong, at least magnitude 6.5.
When was the last tsunami in the world?
Tsunami of January 22, 2017 (Bougainville, P.N.G.) Tsunami of December 17, 2016 (New Britain, P.N.G.)
How often do earthquakes occur in Indonesia?
Earthquakes with a magnitude of 5.0 or lower occur almost daily in Indonesia, while more major earthquakes have occurred about once a year throughout the nation’s history. These earthquakes often trigger tsunamis or floods that devastate communities.