Sunda Trench is considered to be part of the Pacific Ring of Fire as well as one of a ring of oceanic trenches around the northern edges of the Australian Plate. In 2005, scientists found evidence that the 2004 earthquake activity in the area of the Java Trench could lead to further catastrophic shifting within a relatively short period of time, perhaps less than a decade. This threat has resulted in international agreements to establish a tsunami warning system in place along the Indian Ocean coast. For about half its length, off of Sumatra, it is divided into two parallel troughs by
1943 Central Java earthquake 1943 Central Java earthquake The 1943 Central Java earthquake occurred on July 23 at 14:53:10 UTC with a moment magnitude of 7.0 near Java, which was under Japanese occupation. The Yogyakarta depression area is mostly covered by alluvium and the volcanic deposit of Mount Merapi. The Yogyakarta depression area is located between the volcanic arc of the Central Java and the Java Trench. The earthquake affected the Yogyakarta depression area in Central Java. It caused about 213 deaths and over 3,900 injuries. More than 12,600 houses collapsed. This earthquake caused damage in Central Java from Garut in the west to