Regional tsunami hazard from splay faults in the Gulf of Oman

Amin Rashidi; Denys Dutykh; Nasser Keshavarz; Laurence Audin

doi:10.1016/j.oceaneng.2021.110169

Regional tsunami hazard from splay faults in the Gulf of Oman

Amin Rashidi, Denys Dutykh, Nasser Keshavarz, Laurence Audin

Mathematics

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5 Scopus citations

Abstract

The present study evaluates the tsunami hazard from splay thrust and normal faults in the western MAKRAN, Gulf of OMAN for the first time. We interpret splay thrust and normal faults in the Gulf of OMAN using reflection seismic data and analyze the implied regional deterministic and probabilistic tsunami hazards. The tsunami hazards associated with splay thrust and more specifically normal faults in MAKRAN have not been well understood before. Our results indicate the need to pay much more attention to hazards from splay thrust and normal faults in the MAKRAN subduction zone. The highest tsunami waves impact JASK and MUSCAT. The results of inundation modeling show the high power of generated tsunami waves to penetrate inland. Our tsunami hazard deaggregation analysis indicates an unusual large contribution from normal faults to the local tsunami hazard. We find out that the probability that tsunami wave height exceeds 1m and 3m in 250 years reach 1 and 0.8 in the Gulf of OMAN Basin.

Original language	British English
Article number	110169
Journal	Ocean Engineering
Volume	243
DOIs	https://doi.org/10.1016/j.oceaneng.2021.110169
State	Published - 1 Jan 2022

Keywords

Gulf of OMAN
Normal faults
Splay faults
Tsunami hazard assessment
Tsunami numerical modeling
Western MAKRAN

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10.1016/j.oceaneng.2021.110169

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title = "Regional tsunami hazard from splay faults in the Gulf of Oman",

abstract = "The present study evaluates the tsunami hazard from splay thrust and normal faults in the western MAKRAN, Gulf of OMAN for the first time. We interpret splay thrust and normal faults in the Gulf of OMAN using reflection seismic data and analyze the implied regional deterministic and probabilistic tsunami hazards. The tsunami hazards associated with splay thrust and more specifically normal faults in MAKRAN have not been well understood before. Our results indicate the need to pay much more attention to hazards from splay thrust and normal faults in the MAKRAN subduction zone. The highest tsunami waves impact JASK and MUSCAT. The results of inundation modeling show the high power of generated tsunami waves to penetrate inland. Our tsunami hazard deaggregation analysis indicates an unusual large contribution from normal faults to the local tsunami hazard. We find out that the probability that tsunami wave height exceeds 1m and 3m in 250 years reach 1 and 0.8 in the Gulf of OMAN Basin.",

keywords = "Gulf of OMAN, Normal faults, Splay faults, Tsunami hazard assessment, Tsunami numerical modeling, Western MAKRAN",

author = "Amin Rashidi and Denys Dutykh and Nasser Keshavarz and Laurence Audin",

note = "Funding Information: This research was supported by the University Savoie Mont Blanc through the internal AAP Recherche (2021) NAMI project. We would like to thank the developers of COMCOT numerical model ( Liu et al., 1998; Wang and Liu, 2006 ). Most figures were made using the GMT software ( Wessel and Smith, 1991 ). We would like to express special thanks to the Editor and anonymous reviewers for their valuable and constructive comments. AR and DD thank Lauren F. Gowdie for her help and support. AR thanks Sajjad Esmaeilpour and Asghar Naderi for their help and suggestions on the seismic interpretation. DD{\textquoteright}s work has been supported by the French National Research Agency , through Investments for Future Program (ref. ANR-18-EURE-0016-528 Solar Academy). Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

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AU - Rashidi, Amin

AU - Dutykh, Denys

AU - Keshavarz, Nasser

AU - Audin, Laurence

N1 - Funding Information: This research was supported by the University Savoie Mont Blanc through the internal AAP Recherche (2021) NAMI project. We would like to thank the developers of COMCOT numerical model ( Liu et al., 1998; Wang and Liu, 2006 ). Most figures were made using the GMT software ( Wessel and Smith, 1991 ). We would like to express special thanks to the Editor and anonymous reviewers for their valuable and constructive comments. AR and DD thank Lauren F. Gowdie for her help and support. AR thanks Sajjad Esmaeilpour and Asghar Naderi for their help and suggestions on the seismic interpretation. DD’s work has been supported by the French National Research Agency , through Investments for Future Program (ref. ANR-18-EURE-0016-528 Solar Academy). Publisher Copyright: © 2021 Elsevier Ltd

PY - 2022/1/1

Y1 - 2022/1/1

N2 - The present study evaluates the tsunami hazard from splay thrust and normal faults in the western MAKRAN, Gulf of OMAN for the first time. We interpret splay thrust and normal faults in the Gulf of OMAN using reflection seismic data and analyze the implied regional deterministic and probabilistic tsunami hazards. The tsunami hazards associated with splay thrust and more specifically normal faults in MAKRAN have not been well understood before. Our results indicate the need to pay much more attention to hazards from splay thrust and normal faults in the MAKRAN subduction zone. The highest tsunami waves impact JASK and MUSCAT. The results of inundation modeling show the high power of generated tsunami waves to penetrate inland. Our tsunami hazard deaggregation analysis indicates an unusual large contribution from normal faults to the local tsunami hazard. We find out that the probability that tsunami wave height exceeds 1m and 3m in 250 years reach 1 and 0.8 in the Gulf of OMAN Basin.

AB - The present study evaluates the tsunami hazard from splay thrust and normal faults in the western MAKRAN, Gulf of OMAN for the first time. We interpret splay thrust and normal faults in the Gulf of OMAN using reflection seismic data and analyze the implied regional deterministic and probabilistic tsunami hazards. The tsunami hazards associated with splay thrust and more specifically normal faults in MAKRAN have not been well understood before. Our results indicate the need to pay much more attention to hazards from splay thrust and normal faults in the MAKRAN subduction zone. The highest tsunami waves impact JASK and MUSCAT. The results of inundation modeling show the high power of generated tsunami waves to penetrate inland. Our tsunami hazard deaggregation analysis indicates an unusual large contribution from normal faults to the local tsunami hazard. We find out that the probability that tsunami wave height exceeds 1m and 3m in 250 years reach 1 and 0.8 in the Gulf of OMAN Basin.

KW - Gulf of OMAN

KW - Normal faults

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KW - Tsunami numerical modeling

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Regional tsunami hazard from splay faults in the Gulf of Oman

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Keywords

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