Tuesday, January 12, 2010

Alert Escalation of Earthquake Frequencies in Indonesia


The frequency of earthquakes across the nation is drastically increasing in the last five years. This condition could be a sign of a greater quake in the future.

"This is noticeable especially after the tsunami quake in Aceh. After 2004, the big quakes seem to be recurring," said Professor Sri Widiyantoro, seismologist from the Bandung Institute of Technology.

Sri stated that between 1664 and 2005, 30,393 earthquakes have been reported across Indonesia. In the past there were at least 1,000 quakes, whether minor, medium, or major scale in the nation. But, since 2005 the frequency has more than doubled."

"In 2005, 2,527 earthquakes have been reported. Almost everyday there is at least two to three quakes in various parts of Indonesia."

The earthquake in Nangroe Aceh Darussalam in 2004 is believed to have indirectly triggered a movement along the subduction zone of the Indoaustralia and Eurasia tectonic plates on the coast of Sumatera. The quake has also triggered movement on the active fracture segments along Sumatera.

"Although the frequency of the quakes could also have a positive sign, meaning that the energy is being released slowly. But, Sri has advises the people to beware the potential major earthquake around Mentawai. The Mentawai segment hasn't broken yet. It's been spared so far."

His statement is supported by the data from Professor Jim Mori, the seismologist from the University of Kyoto, Japan, which states that the Aceh quake in 2004 is the biggest in the last fifty years and has caused much movement in the Aceh and Mentawai subduction zone, and the movement is even spreading to the north of Nangroe Aceh Darussalam.


source :
http://english.kompas.com/read/2010/01/12/20295145/Alert.Escalation.of.Earthquake.Frequencies.in.Indonesia

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