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An Earthquake Between Magnitude 6.5 and 7 Displaced Mount Batu by Up to 460 Meters in West Bandung, Revealing the Power of the Lembang Fault and Reinforcing Warnings About Seismic Risk in the Region
A megathrust earthquake displaced an entire mountain by almost 500 meters in the Lembang region of West Bandung, Indonesia. The phenomenon was confirmed by BRIN (National Agency for Research and Innovation), which recorded intense activity along the Lembang Fault, one of the 81 active geological faults in the country. The following information is from the ND Mais portal.
According to researcher Mudrik Rahmawan Daryono, Mount Batu was raised due to tectonic movement, with a displacement that may have reached between 120 and 460 meters.
Additionally, studies conducted at the site indicate a vertical rise of about 40 centimeters, caused by a tremor an estimated 6.5 to 7 magnitude.
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Tectonic Movement and Evidence of the Shake
“This displacement is clear evidence of the active movement of the Lembang Fault over time,” Daryono explained during a geotracking activity in the affected area.
According to him, the event confirms the strength of the underground dynamics at work beneath the island of Java, one of the most densely populated regions of Indonesia.
The researcher also highlighted the importance of the government intensifying disaster mitigation efforts, with plans that allow for quick and effective responses before and after seismic events.
The guidance aims to reduce human and material losses in future occurrences.
Lembang Fault Represents High Seismic Risk
The Lembang Fault is located 10 kilometers north of the city of Bandung and extends approximately 29 kilometers.
Its area of influence crosses regions with high population density, which increases the potential for damage in the event of further tremors.
With a movement rate of up to 6 millimeters per year, the fault poses a considerable risk to neighboring municipalities, such as Cimahi, West Bandung, and Bandung.
In addition to the differences in terrain—one smoother part and another with steep slopes—the area combines residential and agricultural zones, which exacerbates the potential impact.
Megathrust Earthquake: Scientists Maintain Surveillance and Strengthen Prevention
For experts, the megathrust earthquake episode is a reminder of the need for constant monitoring of Indonesia’s active geological faults.
The country is located on the so-called “Pacific Ring of Fire,” an area known for intense seismic and volcanic activity.
The tectonic activity observed in Bandung shows that, even during periods of apparent stability, the ground can release forces capable of changing the geography of an entire mountain in a matter of minutes.
With information from ND Mais.
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