BPPT Radar Image Reveals the Southern Part of Mount Krakatau Children's Landslide

Indo Kanal. The Technology Assessment and Application Agency released a radar image that showed differences in the surface of Anak Krakatau seen from the air.

The two images that compare the conditions on December 11 and December 23, 2018 clearly show a change in surface around 357 meters and 1,800 meters.

It appears in the image that the southern or lower left of the image is gone. "This is evidence that there is an area lost or landslide to the sea, around 64 hectares," Widjo Kongko said on Monday (12/24/2018).

Based on research conducted by French geologist Christine Deplus and researcher at the Indonesian Institute of Sciences (LIPI) Hery Harjono, the landslide in the south-southwest of Anak Krakatau could have triggered the tsunami.

In his message on Sunday, Hery said that Anak Krakatau tends to grow to the southwest and that side is also steeper than others.

"Of course this is a labile part and if it sags or landslides it certainly can trigger a tsunami," said Hery.

The publication of Deplus and Hery's research in the Journal of Vulvanology and Geothermal Research in 1995 also revealed that a tsunami caused by the Anak Krakatau avalanche had occurred in 1981.

Volcanology expert Surono revealed, based on the BPPT image, "The avalanche is large. The energy must also be large."

Widjo revealed, to be more certain, it is necessary to estimate the volume of avalanches that fall into the ocean.

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