Estimating the slip rate in the North Tabriz Fault using focal mechanism data and GPS velocity field
This study delves into slip distribution on the North Tabriz Fault (NTF), a critical aspect of seismic hazard analysis due to its proximity to the Tabriz metropolis. The study operates within a uniform elastic half-space, maintaining constant values for fault geometry and regional rheological parame...
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| Format: | Article |
| Language: | English |
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De Gruyter
2024-03-01
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| Series: | Journal of Geodetic Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/jogs-2022-0167 |
| _version_ | 1797246632077557760 |
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| author | Salmanian Milad Rastbood Asghar Hossainali Masoud Mashhadi |
| author_facet | Salmanian Milad Rastbood Asghar Hossainali Masoud Mashhadi |
| author_sort | Salmanian Milad |
| collection | DOAJ |
| description | This study delves into slip distribution on the North Tabriz Fault (NTF), a critical aspect of seismic hazard analysis due to its proximity to the Tabriz metropolis. The study operates within a uniform elastic half-space, maintaining constant values for fault geometry and regional rheological parameters throughout the research. To calculate strain boundary conditions, permanent and periodic global positioning system (GPS) data from the northwest region were utilized. The fault was constrained perpendicularly while allowing tangential movement, facilitating the determination of its annual slip rate using the boundary element method, with the Okada analytical model serving as the fundamental solution. The findings underscore the intricate relationship between the fault’s slip rate and boundary conditions, revealing a predominant right-lateral strike-slip motion. The study offers two slip rate assessments, obtained through earthquake focal mechanisms and GPS velocity data, yielding values of 5 and 5.5 mm/year{\rm{mm}}/{\rm{year}}, respectively. Importantly, the alignment of these calculated slip rates with paleo-seismological data underscores the credibility of the results generated via the boundary element method, distinguishing it as a reliable approach when compared to other numerical and analytical techniques. This research provides valuable insights into the behavior and slip dynamics of the NTF, which is pivotal for assessing seismic risks. |
| first_indexed | 2024-04-24T19:45:53Z |
| format | Article |
| id | doaj.art-05c561a3f58f4c32a4d0b2c6d3e915d9 |
| institution | Directory Open Access Journal |
| issn | 2081-9943 |
| language | English |
| last_indexed | 2024-04-24T19:45:53Z |
| publishDate | 2024-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Journal of Geodetic Science |
| spelling | doaj.art-05c561a3f58f4c32a4d0b2c6d3e915d92024-03-25T07:28:59ZengDe GruyterJournal of Geodetic Science2081-99432024-03-011416922510.1515/jogs-2022-0167Estimating the slip rate in the North Tabriz Fault using focal mechanism data and GPS velocity fieldSalmanian Milad0Rastbood Asghar1Hossainali Masoud Mashhadi2Faculty of Geodesy and Geomatics Engineering, K. N. Toosi University of Technology, Tehran15433-19967, IranDepartment of Geomatics Engineering, Faculty of Civil Engineering, University of Tabriz, Tabriz, IranFaculty of Geodesy and Geomatics Engineering, K. N. Toosi University of Technology, Tehran15433-19967, IranThis study delves into slip distribution on the North Tabriz Fault (NTF), a critical aspect of seismic hazard analysis due to its proximity to the Tabriz metropolis. The study operates within a uniform elastic half-space, maintaining constant values for fault geometry and regional rheological parameters throughout the research. To calculate strain boundary conditions, permanent and periodic global positioning system (GPS) data from the northwest region were utilized. The fault was constrained perpendicularly while allowing tangential movement, facilitating the determination of its annual slip rate using the boundary element method, with the Okada analytical model serving as the fundamental solution. The findings underscore the intricate relationship between the fault’s slip rate and boundary conditions, revealing a predominant right-lateral strike-slip motion. The study offers two slip rate assessments, obtained through earthquake focal mechanisms and GPS velocity data, yielding values of 5 and 5.5 mm/year{\rm{mm}}/{\rm{year}}, respectively. Importantly, the alignment of these calculated slip rates with paleo-seismological data underscores the credibility of the results generated via the boundary element method, distinguishing it as a reliable approach when compared to other numerical and analytical techniques. This research provides valuable insights into the behavior and slip dynamics of the NTF, which is pivotal for assessing seismic risks.https://doi.org/10.1515/jogs-2022-0167boundary element methodfocal mechanismgps velocity fieldnorth tabriz faultslip rate |
| spellingShingle | Salmanian Milad Rastbood Asghar Hossainali Masoud Mashhadi Estimating the slip rate in the North Tabriz Fault using focal mechanism data and GPS velocity field Journal of Geodetic Science boundary element method focal mechanism gps velocity field north tabriz fault slip rate |
| title | Estimating the slip rate in the North Tabriz Fault using focal mechanism data and GPS velocity field |
| title_full | Estimating the slip rate in the North Tabriz Fault using focal mechanism data and GPS velocity field |
| title_fullStr | Estimating the slip rate in the North Tabriz Fault using focal mechanism data and GPS velocity field |
| title_full_unstemmed | Estimating the slip rate in the North Tabriz Fault using focal mechanism data and GPS velocity field |
| title_short | Estimating the slip rate in the North Tabriz Fault using focal mechanism data and GPS velocity field |
| title_sort | estimating the slip rate in the north tabriz fault using focal mechanism data and gps velocity field |
| topic | boundary element method focal mechanism gps velocity field north tabriz fault slip rate |
| url | https://doi.org/10.1515/jogs-2022-0167 |
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