The Java Trench, also called Sunda Trench, with a length of 2 600 km and a maximum depth of 7 725 meters at 10°19'N, 109°58'E, was long thought to be the deepest trench of the Indian Ocean, but is in fact second to the Diamantina Trench in the South East Indian Basin, about 1 000 km west of Perth, West Australia. A ditch with water can be used for drainage and irrigation. ... Perth is the name of several towns and cities: Perth, Scotland is the original Perth, after which the others are named, and the administrative town of the region of Perth and Kinross in Scotland. ... Motto: Cygnis Insignis (Distinguished by its swans) Nickname: Wildflower State Other Australian states and territories Capital Perth Government Governor Premier Const. ...

The trench is the seam of two Tectonic plates, and deformation along this area caused the 2004 Indian Ocean earthquake and the ensuing deadly tsunami on December 26, 2004. ... Global earthquake epicenters, 1963–1998 An earthquake is a trembling or a shaking movement of the Earths surface. ... The tsunami that struck Malé in the Maldives on December 26, 2004. ...