Island-new Sibaru in Mentawai Islands regency, West Sumatra Province (92 is one of Indonesia's outer islands) filled with coral fossils.This was because the beach level rise of about 1 meter during an earthquake, December 2004.
Earthquake Experts: Not in Padang Earthquake Center Subduction Zone. Why SR 7.6 quake in the Sea of No Trigger Tsunami?. Based in West Sumatra earthquake magnitude 7.6 Richter. JAKARTA, KOMPAS.com - 7.6 magnitude earthquake centered in the west of Padang, on Wednesday (30 / 9), is not considered major earthquake in 200 annual cycle that has been wary in the main zones, namely the Mentawai segment.The reason, the quake was not centered in the subduction zone, but the fault is in the vicinity.
"In general, this quake would create a more vulnerable segment of the subduction. (As an illustration only) If you should have major earthquake occurred 10 years from now, might be 5 years old again," said Dr. Danny Hilman Natawidjaya, earthquake expert from the Indonesian Institute of Sciences (LIPI), while dihubungiKompas.com, Thursday (1 / 10) morning.
According to Danny, the earthquake that occurred in the Valley does not reduce the potential release of energy in the Mentawai segment, but instead can lead to more rapid release of energy."In fact, make the main zone is more tense because of 'hit' from the side," he said.
Danny said, the potential energy release in the Mentawai segment actually been reduced, ie, when an earthquake happens Bengkulu on September 12, 2007.The quake was centered in the bag 'energy' are the same and reduce about a third.He said the release of energy in this zone actually expected a little by little.
History records, earthquake centered there have occurred in 1650 and 1833 and caused a tsunami that is estimated to as high as 10 meters in Padang.According to Danny, now has entered the Mentawai segment 200 annual cycle.However, until now there is no technology and no one could confirm exactly when it collapsed.
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