Ground Motion Modeling in the Eastern Caucasus
Abstract
In this paper, we analyzed the performance of a preliminary three-dimensional (3D) velocity model of the Eastern Caucasus covering most of the Azerbaijan. The model was developed in support to long-period ground motion simulations and seismic hazard assessment from regional earthquakes in Azerbaijan. The model’s performance was investigated by simulating ground motion from the damaging Mw 5.9, 2012 Zaqatala earthquake, which was well recorded throughout the region by broadband seismic instruments. In our simulations, we use a parallelized finite-difference method of fourth-order accuracy. The comparison between the simulated and recorded ground motion velocity in the modeled period range of 3–20 s shows that in general, the 3D velocity model performs well. Areas in which the model needs improvements are located mainly in the central part of the Kura basin and in the Caspian Sea coastal areas. Comparisons of simulated ground motion using our 3D velocity model and corresponding 1D regional velocity model were used to locate areas with strong 3D wave propagation effects. In areas with complex underground structure, the 1D model fails to produce the observed ground motion amplitude and duration, and spatial extend of ground motion amplification caused by wave propagation effects.
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1253046
- Alternate Identifier(s):
- OSTI ID: 1376019
- Report Number(s):
- LLNL-JRNL-679075
Journal ID: ISSN 0033-4553; PII: 1311
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Published Article
- Journal Name:
- Pure and Applied Geophysics
- Additional Journal Information:
- Journal Name: Pure and Applied Geophysics Journal Volume: 173 Journal Issue: 8; Journal ID: ISSN 0033-4553
- Publisher:
- Springer Science + Business Media
- Country of Publication:
- Switzerland
- Language:
- English
- Subject:
- 58 GEOSCIENCES; wave propagation modeling; strong ground motion; finite-difference technique; 3D velocity model; Azerbaijan; Kura basin
Citation Formats
Pitarka, Arben, Gok, Rengin, Yetirmishli, Gurban, Ismayilova, Saida, and Mellors, Robert. Ground Motion Modeling in the Eastern Caucasus. Switzerland: N. p., 2016.
Web. doi:10.1007/s00024-016-1311-2.
Pitarka, Arben, Gok, Rengin, Yetirmishli, Gurban, Ismayilova, Saida, & Mellors, Robert. Ground Motion Modeling in the Eastern Caucasus. Switzerland. https://doi.org/10.1007/s00024-016-1311-2
Pitarka, Arben, Gok, Rengin, Yetirmishli, Gurban, Ismayilova, Saida, and Mellors, Robert. Fri .
"Ground Motion Modeling in the Eastern Caucasus". Switzerland. https://doi.org/10.1007/s00024-016-1311-2.
@article{osti_1253046,
title = {Ground Motion Modeling in the Eastern Caucasus},
author = {Pitarka, Arben and Gok, Rengin and Yetirmishli, Gurban and Ismayilova, Saida and Mellors, Robert},
abstractNote = {In this paper, we analyzed the performance of a preliminary three-dimensional (3D) velocity model of the Eastern Caucasus covering most of the Azerbaijan. The model was developed in support to long-period ground motion simulations and seismic hazard assessment from regional earthquakes in Azerbaijan. The model’s performance was investigated by simulating ground motion from the damaging Mw 5.9, 2012 Zaqatala earthquake, which was well recorded throughout the region by broadband seismic instruments. In our simulations, we use a parallelized finite-difference method of fourth-order accuracy. The comparison between the simulated and recorded ground motion velocity in the modeled period range of 3–20 s shows that in general, the 3D velocity model performs well. Areas in which the model needs improvements are located mainly in the central part of the Kura basin and in the Caspian Sea coastal areas. Comparisons of simulated ground motion using our 3D velocity model and corresponding 1D regional velocity model were used to locate areas with strong 3D wave propagation effects. In areas with complex underground structure, the 1D model fails to produce the observed ground motion amplitude and duration, and spatial extend of ground motion amplification caused by wave propagation effects.},
doi = {10.1007/s00024-016-1311-2},
journal = {Pure and Applied Geophysics},
number = 8,
volume = 173,
place = {Switzerland},
year = {Fri May 13 00:00:00 EDT 2016},
month = {Fri May 13 00:00:00 EDT 2016}
}
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https://doi.org/10.1007/s00024-016-1311-2
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Works referenced in this record:
Scenario Source Models and Strong Ground Motion for Future Mega‐earthquakes: Application to Lima, Central Peru
journal, January 2015
- Pulido, Nelson; Aguilar, Zenón; Tavera, Hernando
- Bulletin of the Seismological Society of America, Vol. 105, Issue 1
Active tectonics of the South Caspian Basin
journal, February 2002
- Jackson, J.; Priestley, K.; Allen, M.
- Geophysical Journal International, Vol. 148, Issue 2
Characterizing Crustal Earthquake Slip Models for the Prediction of Strong Ground Motion
journal, January 1999
- Somerville, P.; Irikura, K.; Graves, R.
- Seismological Research Letters, Vol. 70, Issue 1
Orientation-Independent Measures of Ground Motion
journal, August 2006
- Boore, D. M.
- Bulletin of the Seismological Society of America, Vol. 96, Issue 4A
Late Cenozoic deformation of the Kura fold-thrust belt, southern Greater Caucasus
journal, October 2009
- Forte, A. M.; Cowgill, E.; Bernardin, T.
- Geological Society of America Bulletin, Vol. 122, Issue 3-4
Stable and Efficient Modeling of Anelastic Attenuation in Seismic Wave Propagation
journal, July 2012
- Petersson, N. Anders; Sjögreen, Björn
- Communications in Computational Physics, Vol. 12, Issue 1
Simulation of Near-Fault Strong-Ground Motion Using Hybrid Green's Functions
journal, June 2000
- Pitarka, A.
- Bulletin of the Seismological Society of America, Vol. 90, Issue 3
Broadband Ground-Motion Simulation Using a Hybrid Approach
journal, September 2010
- Graves, R. W.; Pitarka, A.
- Bulletin of the Seismological Society of America, Vol. 100, Issue 5A
Long-Period Ground Motion in the Arabian Gulf from Earthquakes in the Zagros Mountains Thrust Belt
journal, June 2014
- Pitarka, Arben; Al-Amri, Abdullah; Pasyanos, Michael E.
- Pure and Applied Geophysics, Vol. 172, Issue 10
Public Release of the ISC-GEM Global Instrumental Earthquake Catalogue (1900-2009)
journal, September 2013
- Storchak, D. A.; Di Giacomo, D.; Bondar, I.
- Seismological Research Letters, Vol. 84, Issue 5
Lithospheric velocity structure of the Anatolian plateau-Caucasus-Caspian region
journal, January 2011
- Gök, R.; Mellors, R. J.; Sandvol, E.
- Journal of Geophysical Research, Vol. 116, Issue B5
Source Parameters of Eastern California and Western Nevada Earthquakes from Regional Moment Tensor Inversion
journal, February 2003
- Ichinose, G. A.
- Bulletin of the Seismological Society of America, Vol. 93, Issue 1