What's Going On Under Bali?

Earth Observatory Blog

What's Going On Under Bali?

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A cross-section of the subduction zone underneath Java, Indonesia (Source: Yves Rene Descatoire & Jamie McCaughey)

The tectonically sleepy, yet very populated island of Bali was shaken on Wednesday morning (22 March 2017) by a magnitude-5.5 earthquake. Located 2 kilometres (km) northeast of Banjar Pasekan in southeastern Bali, the morning quake shook the area. But, because of its 118 km-depth, it did not cause major damage or any casualties.

Professor Kerry Sieh, Director of the Earth Observatory of Singapore, explains the subduction process at the Sunda Megathrust

Director of the Earth Observatory of Singapore, Professor Kerry Sieh, who has studied the mega-thrust fault off of the western side of Sumatra and down through Java and Bali, suggests that yesterday’s moderate earthquake is a reminder to us that even though the area has been dormant for the past several hundred years, it has the potential to release a large earthquake, or even a series of large quakes, of about magnitude-8.5 to 9.0 in the future. 

Prof Sieh shares his take on yesterday’s quake in Bali in the video below. 

For Prof Sieh's commentary piece on Channel NewsAsia's website, please click here.

(Source of the photo in the video showing the damaged building in Bali: Metro_TV/Twitter)

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