BMKG Called The Sukabumi Earthquake Triggered By The Fault Of The Indo-Australian Plate

Sukabumi/Antara Earthquake

JAKARTA - An earthquake with a magnitude of 5.0 shook the southern city of Sukabumi, West Java, on Tuesday, April 27, at 16.23 WIB.

This earthquake occurred at sea at a distance of 89 km south of Sukabumi City, at a depth of 58 km, allegedly triggered by a fault in the Indo-Australian Plate.

"This earthquake is a type of shallow earthquake that is thought to have been triggered by an enlargement / fault in the Indo-Australian Plate," said Head of the Earthquake and Tsunami Mitigation Division of the Meteorology, Climatology and Geophysics Agency (BMKG) Daryono in Jakarta, as reported by Antara, Tuesday, April 27.

This earthquake can be called an intraslab earthquake (oceanic intraslab earthquake) like the 6.1 earthquake that occurred in the south of East Java on April 10, 2021.

The earthquake in Sukabumi has a source mechanism in the form of a sliding or horizontal movement (strike-slip fault).

Earthquake shocks were felt in an area wide enough to reach Tangerang and Jakarta. In the areas of Sukabumi, Rangkasbitung, Bayah, Cihara, Cilograng, Panggarangan, and Bogor, shocks were felt on the MMI III intensity scale.

Meanwhile, in South Tangerang, Jakarta, and Bandung, it is felt on the MMI II intensity scale. Until now, there have been no reports of damage to houses caused by the earthquake.

The earthquake did not have the potential for a tsunami because the hypocenter was relatively deep, with a relatively small force to deform the ocean floor and disrupt the sea water column.

Daryono said that the earthquake was the second earthquake with significant shocks by the community and occurred in the Indian Ocean south of Java, because at 10.22.59 WIB there was also an earthquake with a magnitude of 4.6 which was centered in the sea at a distance of 91 km southwest of Gunungkidul, Yogyakarta, with a depth of 24 km is felt in Gunung Kidul, Bantul, and Sleman.