KOMPAS.com – Earthquake an earth measuring 6.8 magnitude and 6.9 magnitude shook the Bengkulu region on Wednesday (19/8/2020) morning.
Reporting from the Twitter account of the Meteorology, Climatology and Geophysics Agency ( BMKG), earthquake with a magnitude of 6.8 occurred at 05.23 WIB and then a 6.9 earthquake with magnitude occurred at 05.29 WIB.
In addition, the earthquake point or epicenter that occurred was also in a nearby location.
Following BMKG analysis, mainly related to the magnitude of the earthquake strength at a nearby location, and at almost the same time?
Head of Mitigation Division Earthquake and Tsunami BMKG Daryono revealed that the two large earthquakes were referred to as “doublet” earthquakes.
Earthquake doublet is an earthquake with almost the same strength, occurring in a close proximity.
“The first earthquake occurred at 05.23.56 WIB with an update magnitude of 6.6 M with an epicenter of 4.50 south latitude, 100.91 east longitude at sea at a distance of 169 km southwest of Bengkulu,” said Daryono when contacted. Kompas.com, Wednesday (19/8/2020).
“Meanwhile, the second earthquake occurred at 05.29.35 WIB with a magnitude update M 6.7 with an epicenter of 3.74 LS and 101.56 BT at sea at a distance of 78 km towards Northwest Bengkulu North with a depth of 11 km, “he continued.
Reportedly, strong shaking occurred in the cities of Bengkulu, North Bengkulu, Mukomuko, Seluma, Kepahiang on the MMI IV intensity scale.
The IV MMI intensity means that the vibration is felt by many people in the house, outside by some people. Marked by broken earthenware, creaking windows / doors and wall creaking.
Daryono added that as a result of the MMI IV earthquake, residents had run out of their houses due to panic due to the sudden strong shaking.
No potential for a tsunami
Furthermore, the earthquake was also felt in South Bengkulu, Kaur, Curup, Lebong on the MMI III intensity scale, as well as in Lubuk Linggau on the MMI II-III intensity scale.
An earthquake with an intensity of III MMI, namely the vibration is felt real in the house. It felt a tremor as if a truck had passed.
“The results of the analysis of the source mechanism show that this earthquake has no potential for a tsunami,” he said.
So far, there have been no reports of damage caused by the earthquake.
“BMKG monitoring results show that only one aftershock has occurred (aftershock) with a magnitude of M4,5, “he continued.
According to Daryono, the large earthquake that occurred was triggered by the subduction activity of the Indo-Australian Plate under the Eurasian Plate, with rock dislocation occurring in the Mentawai-Pagai Megathrust segment with an upward fault source mechanism.
Not only that, Daryono appealed to the public to be careful about aftershocks.
People should avoid buildings that easily collapse or have cracks.