Sunda Trench Sunda Trench The Sunda Trench, earlier known as and sometimes still indicated as the Java Trench, is an oceanic trench located in the Indian Ocean near Sumatra, formed where the Australian-Capricorn plates subduct under a part of the Eurasian Plate. It is long. Its maximum depth (at 10°19'S, 109°58'E, about 320 km south of Yogyakarta), is the deepest point in the Indian Ocean. The trench stretches from the Lesser Sunda Islands past Java, around the southern coast of Sumatra on to the Andaman Islands, and forms the boundary between Indo-Australian Plate and Eurasian plate (more specifically, Sunda Plate). The trench
1994 Java earthquake 1994 Java earthquake The 1994 Java earthquake occurred on June 3 at off the coast of Indonesia. The epicenter was off the eastern part of the southern Java coast, near the east end of the Java Trench. This earthquake occurred with a moment magnitude of 7.8 in a region which is characterized as having a weak seismic coupling. Earthquakes with slow rupture velocities are the most efficient tsunami generators, and this earthquake was classified as a tsunami earthquake. The tsunami reached Java and Bali, with runups up to on the east Java coast and up to on the southwestern Bali