M~6 Earthquake Geomorphological Impact: Tarauaca Fault

Can deep earthquakes explain observed landscape transformations in Acre, Brazil?

Single Event (M6.0, depth=580 km)

PGA at 50 km0.012 g
MMI Intensity3.5 (Weak)
Landslide Displacement0.00 cm
Settlement0.62 cm
LiquefactionNot Triggered
Impact Score0.006 / 1.0

Conclusion

Individual M~6 deep earthquakes are INSUFFICIENT to explain observed geomorphological transformations.

Min. magnitude for >5cm displacement: M 7.4

Monte Carlo (5,000 simulations)

Mean PGA0.013 g
Mean Displacement0.69 cm
Liquefaction Prob.0%
Signif. Impact Prob.0%
Cumul. (50 events)30.3 cm
Recurrence~100 yr
Years for 1m change~16,000 yr

PGA vs Distance

PGA vs Magnitude (at 50 km)

Interactive: Magnitude Explorer

PGA0.012 g
Displacement0.62 cm
Geomorphic ImpactNegligible