How 2006 Pangandaran Tsunami Reached Height of Coconut Tree
The true magnitude of the 2006 Pangandaran earthquake reached an equivalent of 8.7, which was stronger than originally recorded.
A 2006 earthquake off the coast of West Java triggered a tsunami that reached heights surpassing coconut trees, according to recent research from Indonesia's National Research and Innovation Agency (BRIN). The magnitude-7.7 quake's epicenter lay along an oceanic megathrust, capable of generating a destructive tsunami across two coastal regions.
Heightened tsunami waves inundated areas of Pangandaran's western and eastern shores, submerging the Pananjung Sari region. Researchers used the Wells and Coppersmith Equation to estimate tsunami heights, finding results aligning with observed dynamics of the disaster. The quake fractured a 600-kilometer-long, 95-kilometer-wide rupture zone, displacing seabed by up to 13 meters.
Subsequent submarine landslides and structural collapse of the ocean floor likely amplified the tsunami's height, with waves arriving in 20 to 30 minutes instead of 40 minutes as calculated without considering these factors. The disaster resulted in 405 fatalities, 27 missing, 274 injured, and 13,198 displaced residents.
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