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Geometric Approach to Identifying Activated Fault Planes: Case Study of the 2014 Murmuri Earthquake, Northwestern Zagros, Iran | ||
| فیزیک زمین و فضا | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 13 بهمن 1403 اصل مقاله (1.8 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jesphys.2025.380701.1007623 | ||
| نویسندگان | ||
| Maryam Abbasian* 1؛ مهدی رضاپور2 | ||
| 1Department of Earth and Planetary Sciences, Rutgers, the State University of New Jersey | ||
| 2موسسه ژئوفیزیک | ||
| چکیده | ||
| An analysis was conducted on the Murmuri earthquake sequence in the Zagros Mountains of Iran in August 2014, aiming to determine the main fault plane. The sequence comprised an initial Mw6.2 earthquake succeeded by 5 aftershocks with magnitudes exceeding 5.4. Events were relocated to enhance understanding of the hypocenter uncertainty. The primary earthquake, registering a magnitude of Mw6.2, was followed by a sequence of events with Mw>5 within 24 hours of the main shock. To identify the earthquake’s source parameters, three components—local waveforms reported by the broadband networks of the Iranian Seismological Center (IRSC), the International Institute of Earthquake Engineering and Seismology (IIEES), and the Iraqi Seismological Network (ISN)—were utilized. An examination was conducted using the ISOLA software, employing a multiple-point source representation and the iterative deconvolution method. The events were relocated using the HYPOINVERSE code to ensure highly accurate results. The stations provided comprehensive coverage, contributing to the high reliability of the results. The method employed in the paper is the H-C method. This simple and readily applicable technique proves highly effective when precise information on the event location and its Centroid Moment Tensor (CMT) solution is available. The findings indicate that the Mountain’s Front Fault (MFF) can be identified as the event's causative fault plane. | ||
| کلیدواژه‌ها | ||
| Moment Tensor؛ Murmuri؛ Fault Plane؛ H-C Method؛ ISOLA | ||
| عنوان مقاله [English] | ||
| Geometric Approach to Identifying Activated Fault Planes: Case Study of the 2014 Murmuri Earthquake, Northwestern Zagros, Iran | ||
| نویسندگان [English] | ||
| Maryam Abbasian1؛ | ||
| 1Department of Earth and Planetary Sciences, Rutgers, the State University of New Jersey | ||
| چکیده [English] | ||
| An analysis was conducted on the Murmuri earthquake sequence in the Zagros Mountains of Iran in August 2014, aiming to determine the main fault plane. The sequence comprised an initial Mw6.2 earthquake succeeded by 5 aftershocks with magnitudes exceeding 5.4. Events were relocated to enhance understanding of the hypocenter uncertainty. The primary earthquake, registering a magnitude of Mw6.2, was followed by a sequence of events with Mw>5 within 24 hours of the main shock. To identify the earthquake’s source parameters, three components—local waveforms reported by the broadband networks of the Iranian Seismological Center (IRSC), the International Institute of Earthquake Engineering and Seismology (IIEES), and the Iraqi Seismological Network (ISN)—were utilized. An examination was conducted using the ISOLA software, employing a multiple-point source representation and the iterative deconvolution method. The events were relocated using the HYPOINVERSE code to ensure highly accurate results. The stations provided comprehensive coverage, contributing to the high reliability of the results. The method employed in the paper is the H-C method. This simple and readily applicable technique proves highly effective when precise information on the event location and its Centroid Moment Tensor (CMT) solution is available. The findings indicate that the Mountain’s Front Fault (MFF) can be identified as the event's causative fault plane. | ||
| کلیدواژه‌ها [English] | ||
| Moment Tensor, Murmuri, Fault Plane, H-C Method, ISOLA | ||
| مراجع | ||
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