• Corpus ID: 247159061

Supershear shock front contribution to the tsunami from the 2018 $\mathbf M_{\mathbf w}$ 7.5 Palu, Indonesia earthquake

@inproceedings{Amlani2019SupershearSF,
  title={Supershear shock front contribution to the tsunami from the 2018 \$\mathbf M\_\{\mathbf w\}\$ 7.5 Palu, Indonesia earthquake},
  author={Faisal Amlani and Harsha S. Bhat and Wim J. F. Simons and Alexandre Schubnel and Christophe Vigny and Ares J. Rosakis and Joni Efendi and Ahmed E Elbanna and Pierpaolo Dubernet and Hasanuddin Zainal Abidin},
  year={2019}
}
Hazardous tsunamis are known to be generated predominantly at subduction zones. However, the 2018 Mw 7.5 Sulawesi (Indonesia) earthquake on a strike-slip fault generated a tsunami that devastated the city of Palu. The mechanism by which this tsunami originated from such an earthquake is being debated. Here we present near-field ground motion (GPS) data confirming that the earthquake attained supershear speed, i.e., a rupture speed greater than the shear wave speed of the host medium. We study… 
1 Citations

Figures from this paper

Comparison of methods for coupled earthquake and 1 tsunami modeling

1Department of Geophysics, Stanford University, Stanford, CA, USA 5 2Technical University of Munich, Munich, Germany 6 3 Institute for Computational and Mathematical Engineering, Stanford University,

References

SHOWING 1-10 OF 67 REFERENCES

Tsunami Simulations of the Sulawesi Mw 7.5 Event: Comparison of Seismic Sources Issued from a Tsunami Warning Context Versus Post-Event Finite Source

The 28 September 2018 Sulawesi earthquake generated a much larger tsunami than expected from its Mw = 7.5 magnitude and from its dominant strike-slip mechanism. Within a few minutes after the

Nearly Instantaneous Tsunamis Following the Mw 7.5 2018 Palu Earthquake

The tsunami observations produced by the 2018 magnitude 7.5 Palu strike‐slip earthquake challenged the traditional basis underlying tsunami hazard assessments and early warning systems. We analyzed

Anatomy of strike-slip fault tsunami genesis

Significance Our work has uncovered unexpected potential for strike-slip faults to generate devastating tsunamis, without necessarily triggering coseismic underwater landslides or slumps with their

Evidence of supershear during the 2018 magnitude 7.5 Palu earthquake from space geodesy

A magnitude 7.5 earthquake hit the city of Palu in Sulawesi, Indonesia on 28 September 2018 at 10:02:43 (coordinated universal time). It was followed a few minutes later by a 4–7-m-high tsunami. Palu

Time and Space Distribution of Coseismic Slip of the 2011 Tohoku Earthquake as Inferred from Tsunami Waveform Data

A multiple time window inversion of 53 high‐sampling tsunami waveforms on ocean‐bottom pressure, Global Positioning System, coastal wave, and tide gauges shows a temporal and spatial slip

Liquefied gravity flow-induced tsunami: first evidence and comparison from the 2018 Indonesia Sulawesi earthquake and tsunami disasters

On 28 September 2018, a strong earthquake with a moment magnitude of 7.5 occurred on the island of Sulawesi, Indonesia. This earthquake caused extensive liquefaction and liquefaction-induced flow

Insights on the Source of the 28 September 2018 Sulawesi Tsunami, Indonesia Based on Spectral Analyses and Numerical Simulations

The 28 September 2018 Sulawesi tsunami has been a puzzle because extreme deadly tsunami waves were generated following an Mw 7.5 strike-slip earthquake, while such earthquakes are not usually
...