Evaluation of tsunami wave energy generated by earthquakes in the Makran subduction zone

Rashidi, Amin; Shomali, Zaher Hossein; Dutykh, Denys; Khah, Nasser Keshavarz Faraj

doi:10.1016/j.oceaneng.2018.07.027

Cited by 13 publications

(9 citation statements)

References 36 publications

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“…Submarine landslides are the second most important tsunamigenic source. The thick marine sediments can cause submarine failure and make the continental shelf margin in the MSZ potentially susceptible to landslide-generated tsunamis [30]. They may also amplify tsunamis [31].…”

Section: Landslidesmentioning

confidence: 99%

“…They may also amplify tsunamis [31]. Furthermore, future earthquakes along the Makran subduction zone can potentially trigger submarine landslides [30]. Submarine landslides can directly generate local tsunamis with high run-ups or be a major contributor to tsunami generation and amplify the wave run-ups of local tsunamis.…”

Section: Landslidesmentioning

confidence: 99%

“…Rashidi et al [30] estimated the energy of tsunami waves generated by seabed displacement in the near field for a multi-segment source model of the Makran subduction zone. Both static and dynamic generation mechanisms [107] were studied to illustrate the temporal and spatial evolution of tsunami wave energy and exchanges between kinetic and potential energies.…”

Section: Modeling Of Hypothetical Tsunami Scenarios In the Makran Subduction Zonementioning

confidence: 99%

“…Figure 7. Relationship between moment magnitude and tsunami wave energy for the entire, western and eastern Makran (modified after[30]). …”

mentioning

confidence: 99%

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A Review of Tsunami Hazards in the Makran Subduction Zone

et al. 2020

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The uncertain tsunamigenic potential of the Makran Subduction Zone (MSZ) has made it an interesting natural laboratory for tsunami-related studies. This study aims to review the recent activities on tsunami hazard in the Makran subduction zone with a focus on deterministic and probabilistic tsunami hazard assessments. While almost all studies focused on tsunami hazard from the Makran subduction thrust, other local sources such as splay faults and landslides can be also real threats in the future. Far-field tsunami sources such as Sumatra-Andaman and Java subduction zones, commonly lumped as the Sunda subduction zone, do not seem to pose a serious risk to the Makran coastlines. The tsunamigenic potential of the western segment of the MSZ should not be underestimated considering the new evidence from geological studies and lessons from past tsunamis in the world. An overview of the results of tsunami hazard studies shows that the coastal area between Kereti to Ormara along the shoreline of Iran-Pakistan and the coastal segment between Muscat and Sur along Oman’s shoreline are the most hazardous areas. Uncertainties in studying tsunami hazard for the Makran region are large. We recommend that future studies mainly focus on the role of thick sediments, a better understanding of the plates interface geometry, the source mechanism and history of extreme-wave deposits, the contribution of other local tsunamigenic sources and vulnerability assessment for all coastlines of the whole Makran region.

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Section: Landslidesmentioning

confidence: 99%

Section: Landslidesmentioning

confidence: 99%

Section: Modeling Of Hypothetical Tsunami Scenarios In the Makran Subduction Zonementioning

confidence: 99%

“…Figure 7. Relationship between moment magnitude and tsunami wave energy for the entire, western and eastern Makran (modified after[30]). …”

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confidence: 99%

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A Review of Tsunami Hazards in the Makran Subduction Zone

et al. 2020

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“…In our previous study (Rashidi et al, 2018), the evolution of kinetic, potential and total energies in the near-field was studied for a multi-segment source model of the Makran subduction zone. An empirical relationship between the moment magnitude and tsunami wave energy in the Makran subduction zone was obtained.…”

Section: Introductionmentioning

confidence: 99%

Tsunami hazard assessment in the Makran subduction zone

et al. 2020

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The lack of offshore seismic data caused uncertainties associated to understating the behavior of future tsunamigenic earthquakes in the Makran Subduction Zone (MSZ). Future tsunamigenic events in the MSZ may trigger significant near-field tsunamis. Run-up heights in the near-field are controlled by the heterogeneity of slip over the rupture area. Considering a non-planar geometry for the Makran subduction zone, a range of random k −2 slip models were generated to hypothesize rupturing on the fault zone. We model tsunamis numerically and assess probabilistic tsunami hazard in the near-field for all synthetic scenarios. The main affected areas by tsunami waves are the area between Jask and Ormara along the shorelines of Iran and Pakistan and the area between Muscat and Sur along the Oman coastline. The maximum peak-run-up along the shores of Iran and Pakistan is about 16 m and about 12 m for the Oman shoreline. The slip distributions control the run-up along the Makran coastlines. The dependency of run-up to the heterogeneity of slip is higher in the most impacted areas. Those areas are more vulnerable to tsunami hazard than other areas.

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