Abstract

Research of the distribution earthquakes risk probability based on earthwuakes data were conducted within Lampung area, situated at between koordinate 101o and 108o longitude, 2o and 7o latitude. The earthquakes data were collected in period 1900-2004. Gridding of the research area within interval 0,5o due to calculate and distribute of the maximum ground motion acceleration. The calculation is using Fukushima and Tanaka Equation. There are eight classifications correlated with risk: (1) Height (top), the intensity is VIII MMI, the maxsimum ground acceleration 2300 s.d. 2900 μm s-2, (2) Height (midle), the intensity is VII MMI, the maxsimum ground acceleration 1800 s.d. 2300 μm s-2, (3) Height (bottom), the intensity is VI MMI, percepatan maksimum getaran tanah 1000 s.d. 1800 μm s-2, (4) Moderate, the intensity is V MMI, the maxsimum ground acceleration 1000 s.d. 1400 μm s-2, (5) Moderate, the intensity is V MMI, the maxsimum ground acceleration 680 s.d. 1000 μm s-2, (6) Low, the intensity is III MMI, the maxsimum ground acceleration 400 s.d. 680 μm s-2, (7) Low, the intensity is II MMI, the maxsimum ground acceleration 180 s.d. 400 μm s-2, (8) Low, the intensity is I MMI, the maxsimum ground acceleration < 180 μm s-2. The degree of the risks are clasified that the surounding of the Liwa town has the positif risk and the area outsides of surounding of the Liwa Town are not harm