East Java people residing in the East Java, making it Indonesia's second-most-populous province; the latest official estimate (for January 2014) is 41,529,481. It has a land border only with the province of Central Java to the west; the Java Sea and the Indian Ocean border its northern and southern coasts, respectively, while the narrow Bali Strait to the east separates Java from Bali. The Dinoyo inscriptions found near the city of Malang are the oldest written sources in East Java, dating from 760 CE. They tell of many political and cultural events in the Kingdom of Dinoyo. The name of Malang is
Sumatra Trench to 350 km. The width at Sumatra trench is controlled by sediment input and accretion rate and history. One distinguishing feature of the Sumatra subduction zone is that it has a relatively 120–140 km accretionary prism and a deep forearc basin (so does the rest of the whole Java subduction zone). However it does vary along the trench. The prism is broad and has a relatively shallow surface slope in the northern part, becomes steep and narrow at the central part, then becomes steep and narrow in the southern area. The inner part of the prism forms a NW-SE arc