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

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

doi:10.1016/j.oceaneng.2018.07.027

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

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

Mathematics

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The MAKRAN subduction zone, an approximate 1000 km section of the EURASIAN–ARABIAN plate, is located offshore of SOUTHERN IRAN and PAKISTAN. In 1945, the MAKRAN subduction zone (MSZ) generated a tsunamigenic earthquake with a magnitude of M_w 8.1. The region has also experienced large historical earthquakes but the data regarding these events are poorly documented. Therefore, the need to investigate tsunamis in MAKRAN must be taken into serious consideration. Using hydrodynamic numerical simulation, we evaluate the tsunami wave energy generated by bottom motion for a tsunamigenic source model distributed along the full length of the MAKRAN subduction zone. The whole rupture of the plate boundary is divided into 20 segments with width of the order of 200 km and a co-seismic slip of 10 m but with various lengths. Exchanges between kinetic and potential components of tsunami wave energy are shown. The total tsunami wave energy displays only 0.33 % of the seismic energy released from the earthquake source. As a result, for every increase in magnitude by one unit, the associated tsunami wave energy becomes about 10³ times greater.

Original language	British English
Pages (from-to)	131-139
Number of pages	9
Journal	Ocean Engineering
Volume	165
DOIs	https://doi.org/10.1016/j.oceaneng.2018.07.027
State	Published - 1 Oct 2018

Keywords

Co-seismic displacement
Makran region
Tsunami modeling
Tsunami wave
Wave energy

UN SDGs

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10.1016/j.oceaneng.2018.07.027

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title = "Evaluation of tsunami wave energy generated by earthquakes in the Makran subduction zone",

abstract = "The MAKRAN subduction zone, an approximate 1000 km section of the EURASIAN–ARABIAN plate, is located offshore of SOUTHERN IRAN and PAKISTAN. In 1945, the MAKRAN subduction zone (MSZ) generated a tsunamigenic earthquake with a magnitude of Mw 8.1. The region has also experienced large historical earthquakes but the data regarding these events are poorly documented. Therefore, the need to investigate tsunamis in MAKRAN must be taken into serious consideration. Using hydrodynamic numerical simulation, we evaluate the tsunami wave energy generated by bottom motion for a tsunamigenic source model distributed along the full length of the MAKRAN subduction zone. The whole rupture of the plate boundary is divided into 20 segments with width of the order of 200 km and a co-seismic slip of 10 m but with various lengths. Exchanges between kinetic and potential components of tsunami wave energy are shown. The total tsunami wave energy displays only 0.33 % of the seismic energy released from the earthquake source. As a result, for every increase in magnitude by one unit, the associated tsunami wave energy becomes about 103 times greater.",

keywords = "Co-seismic displacement, Makran region, Tsunami modeling, Tsunami wave, Wave energy",

author = "Amin Rashidi and Shomali, {Zaher Hossein} and Denys Dutykh and {Keshavarz Faraj Khah}, Nasser",

note = "Funding Information: The authors would like to express their gratitude to the developers of COMCOT numerical model ( Liu et al., 1998 ). The authors thank the Editor, Prof. Atilla Incecik, and anonymous reviewers for their constructive reviews and helpful suggestions. A. Rashidi would like to acknowledge the hospitality of the Laboratory of Mathematics ( LAMA UMR 5127 ), University Savoie Mont Blanc , France. The second author, Z. H. Shomali, acknowledges the support from the University of Tehran for this research under Grant number 27875/01/10 . Figures were created using the GMT software ( Wessel and Smith, 1991 ). Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

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AU - Rashidi, Amin

AU - Shomali, Zaher Hossein

AU - Dutykh, Denys

AU - Keshavarz Faraj Khah, Nasser

N1 - Funding Information: The authors would like to express their gratitude to the developers of COMCOT numerical model ( Liu et al., 1998 ). The authors thank the Editor, Prof. Atilla Incecik, and anonymous reviewers for their constructive reviews and helpful suggestions. A. Rashidi would like to acknowledge the hospitality of the Laboratory of Mathematics ( LAMA UMR 5127 ), University Savoie Mont Blanc , France. The second author, Z. H. Shomali, acknowledges the support from the University of Tehran for this research under Grant number 27875/01/10 . Figures were created using the GMT software ( Wessel and Smith, 1991 ). Publisher Copyright: © 2018 Elsevier Ltd

PY - 2018/10/1

Y1 - 2018/10/1

N2 - The MAKRAN subduction zone, an approximate 1000 km section of the EURASIAN–ARABIAN plate, is located offshore of SOUTHERN IRAN and PAKISTAN. In 1945, the MAKRAN subduction zone (MSZ) generated a tsunamigenic earthquake with a magnitude of Mw 8.1. The region has also experienced large historical earthquakes but the data regarding these events are poorly documented. Therefore, the need to investigate tsunamis in MAKRAN must be taken into serious consideration. Using hydrodynamic numerical simulation, we evaluate the tsunami wave energy generated by bottom motion for a tsunamigenic source model distributed along the full length of the MAKRAN subduction zone. The whole rupture of the plate boundary is divided into 20 segments with width of the order of 200 km and a co-seismic slip of 10 m but with various lengths. Exchanges between kinetic and potential components of tsunami wave energy are shown. The total tsunami wave energy displays only 0.33 % of the seismic energy released from the earthquake source. As a result, for every increase in magnitude by one unit, the associated tsunami wave energy becomes about 103 times greater.

AB - The MAKRAN subduction zone, an approximate 1000 km section of the EURASIAN–ARABIAN plate, is located offshore of SOUTHERN IRAN and PAKISTAN. In 1945, the MAKRAN subduction zone (MSZ) generated a tsunamigenic earthquake with a magnitude of Mw 8.1. The region has also experienced large historical earthquakes but the data regarding these events are poorly documented. Therefore, the need to investigate tsunamis in MAKRAN must be taken into serious consideration. Using hydrodynamic numerical simulation, we evaluate the tsunami wave energy generated by bottom motion for a tsunamigenic source model distributed along the full length of the MAKRAN subduction zone. The whole rupture of the plate boundary is divided into 20 segments with width of the order of 200 km and a co-seismic slip of 10 m but with various lengths. Exchanges between kinetic and potential components of tsunami wave energy are shown. The total tsunami wave energy displays only 0.33 % of the seismic energy released from the earthquake source. As a result, for every increase in magnitude by one unit, the associated tsunami wave energy becomes about 103 times greater.

KW - Co-seismic displacement

KW - Makran region

KW - Tsunami modeling

KW - Tsunami wave

KW - Wave energy

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SN - 0029-8018

VL - 165

SP - 131

EP - 139

JO - Ocean Engineering

JF - Ocean Engineering

ER -

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

Abstract

Keywords

UN SDGs

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