TY - JOUR
T1 - Horizontal displacement effect in tsunami wave generation in the western Makran region
AU - Rashidi, Amin
AU - Dutykh, Denys
AU - Shomali, Zaher Hossein
N1 - Funding Information:
The authors would like to express their gratitude to the Editor in Chief, R. Cengiz Ertekin and anonymous reviewers for their valuable comments and constructive suggestions. The authors also thank the developers of COMCOT numerical model (Liu et al. 1998 ; Wang and Liu 2006 ). Figures were created using the GMT software (Wessel and Smith 1991 ). AR would like to acknowledge the hospitality of the Laboratory of Mathematics (LAMA UMR 5127), University Savoie Mont Blanc, France. The work of DD has been supported by the French National Research Agency, through Investments for Future Program (ref. ANR- 18 - —Solar Academy).
Funding Information:
The authors would like to express their gratitude to the Editor in Chief, R. Cengiz Ertekin and anonymous reviewers for their valuable comments and constructive suggestions. The authors also thank the developers of COMCOT numerical model (Liu et al. ; Wang and Liu ). Figures were created using the GMT software (Wessel and Smith ). AR would like to acknowledge the hospitality of the Laboratory of Mathematics (LAMA UMR 5127), University Savoie Mont Blanc, France. The work of DD has been supported by the French National Research Agency, through Investments for Future Program (ref. ANREURE—Solar Academy).
Publisher Copyright:
© 2020, Springer Nature Switzerland AG.
PY - 2020/11
Y1 - 2020/11
N2 - The current silent status of the western segment of the Makran Subduction Zone (MSZ), also known as the western Makran, is an opportunity to examine different aspects of a tsunami hazard for this region. In this study, we compute the contribution of the horizontal coseismic displacement of the sea bottom due to earthquakes in the western Makran. This contribution is usually ignored in conventional tsunami generation modeling. We also estimate the evolution of tsunami wave energy and the influence of horizontal seabed displacements on the energy. Moreover, the effect of source parameters variation on tsunami amplitude and on the contribution of the horizontal seabed movement is investigated. Our numerical results show that due to the mild bathymetry gradient of the western Makran region, the effect of horizontal displacements is low. We estimate a 4% increase in maximum tsunami wave amplitude by the influence of the horizontal motion. Also, the contribution from horizontal seabed displacements leads to almost a 9% increment in tsunami wave energy. In addition to local bathymetry, the importance of horizontal seabed deformation can be affected by the fault rake, width and location. These are the main parameters causing uncertainty in the present study.
AB - The current silent status of the western segment of the Makran Subduction Zone (MSZ), also known as the western Makran, is an opportunity to examine different aspects of a tsunami hazard for this region. In this study, we compute the contribution of the horizontal coseismic displacement of the sea bottom due to earthquakes in the western Makran. This contribution is usually ignored in conventional tsunami generation modeling. We also estimate the evolution of tsunami wave energy and the influence of horizontal seabed displacements on the energy. Moreover, the effect of source parameters variation on tsunami amplitude and on the contribution of the horizontal seabed movement is investigated. Our numerical results show that due to the mild bathymetry gradient of the western Makran region, the effect of horizontal displacements is low. We estimate a 4% increase in maximum tsunami wave amplitude by the influence of the horizontal motion. Also, the contribution from horizontal seabed displacements leads to almost a 9% increment in tsunami wave energy. In addition to local bathymetry, the importance of horizontal seabed deformation can be affected by the fault rake, width and location. These are the main parameters causing uncertainty in the present study.
KW - Horizontal co-seismic displacements
KW - Numerical modeling
KW - Tsunami active generation
KW - Tsunami wave modeling
KW - Western Makran
UR - http://www.scopus.com/inward/record.url?scp=85096051698&partnerID=8YFLogxK
U2 - 10.1007/s40722-020-00182-8
DO - 10.1007/s40722-020-00182-8
M3 - Article
AN - SCOPUS:85096051698
SN - 2198-6444
VL - 6
SP - 427
EP - 439
JO - Journal of Ocean Engineering and Marine Energy
JF - Journal of Ocean Engineering and Marine Energy
IS - 4
ER -
