Abstract
Tsunami is not a foreign phenomenon on the south coast of Java. In the year 1904 Pangandaran area - Turtle Bay has ever rolled product tsunami earthquake with Mw 8 (according to the USGS) earthquake in the central west of the epicenter was in 2006. In the east, the tsunami also bekas2 found in Pacitan. Previous cases occurred in Banyuwangi, 1994 past due more or less 200 km south of the southern coast of Java island is an active fault that is meeting the two active plates plates plates Indoaustralia and Euroasia moving average as far as 60 mm per year so that the two plates will be urged each other. In particular insistence that tolerance is not harmful, but if it exceeds the tolerance limit at the meeting point of two plates will be broken. Since the emergence of extraordinary energy of fracture at the time it happens natural phenomenon known by the public as an earthquake. To illustrate the amount of energy released in Yogjakarta earthquake on May 27, 2006 a magnitude 5.9 or 7.7 on the Richter Scale Mw (moment magnitude) by using the equation for the energy obtained Kanamori 22,390 TeraJoule or equal to 5.35 megatons of TNT. When compared with the energy of Little Boy bomb which exploded above Hiroshima (20 kilotons), 2006 Indian Ocean earthquake was 268 times more powerful (Rovicky, 2006)
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