Characteristic Analysis of the MS6.0 Ma'erkang Earthquake Sequence on Jun. 10, 2022
On June 10, 2022, the MS6.0 Ma'erkang earthquake sequence occurred in the Bayan Har block. In this paper, the temporal and spatial distribution and attenuation characteristics of earthquake sequence is analyzed based on the regional structure, the temporal and spatial distribution of earthquake...
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| Format: | Article |
| Language: | English |
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Society for Risk Analysis - China
2024-03-01
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| Series: | Journal of Risk Analysis and Crisis Response (JRACR) |
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| Online Access: | https://doi.org/10.54560/jracr.v14i1.439 |
| _version_ | 1797231817617571840 |
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| author | Yu-ping Qi Feng Long Jun Li Jun Su Di Wang Ling-zhe Kong Meng-die Chen Fang Du |
| author_facet | Yu-ping Qi Feng Long Jun Li Jun Su Di Wang Ling-zhe Kong Meng-die Chen Fang Du |
| author_sort | Yu-ping Qi |
| collection | DOAJ |
| description | On June 10, 2022, the MS6.0 Ma'erkang earthquake sequence occurred in the Bayan Har block. In this paper, the temporal and spatial distribution and attenuation characteristics of earthquake sequence is analyzed based on the regional structure, the temporal and spatial distribution of earthquake sequence, the focal mechanism solution, and the parameters of earthquake sequence, using the data of Sichuan Seismic Network and the temporary stations incorporated into the network. The results show that: (1) The MS6.0 Ma'erkang earthquake sequence is generally distributed in NW-SE direction, and the long axis of this series is basically consistent with the nearby Songgang fault. (2) As the earthquake sequence is formed by three large events with MS ≥5.0, the frequency of small earthquakes in the earthquake sequence area generally attenuates relatively slowly, while the activity level (magnitude) of aftershocks attenuates rapidly. (3) After the MS5.2 earthquake, the sequence parameters obtained show that the h-value is 1.09 and the p-value is stable at 1.02, indicating that the intensity and frequency attenuation of the earthquake sequence are gradually stable and tend to be normal. The b-value is 0.95, indicating that the maximum aftershock magnitude of the series is estimated to be ML5.1, and the b-value gradually tended to be stable, indicating that the stress in the region gradually tended to be balanced after the MS5.2 earthquake. The MS4.4 (ML5.0) earthquake that occurred at 4:37 on June 10 (local time) is the largest aftershock after the MS5.2 earthquake in the sequence. (4) The Songgang fault with NW-SE trend is presumed to be the main seismogenic tectonics, but the migration of three earthquakes with MS≥5.0 may also indicate that the Songgang fault is not a single seismogenic tectonics, which requires further field scientific investigation and analysis. |
| first_indexed | 2024-04-24T15:50:25Z |
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| institution | Directory Open Access Journal |
| issn | 2210-8491 2210-8505 |
| language | English |
| last_indexed | 2024-04-24T15:50:25Z |
| publishDate | 2024-03-01 |
| publisher | Society for Risk Analysis - China |
| record_format | Article |
| series | Journal of Risk Analysis and Crisis Response (JRACR) |
| spelling | doaj.art-80b60c249a604abb92bea9b7b66bc4112024-04-01T12:18:59ZengSociety for Risk Analysis - ChinaJournal of Risk Analysis and Crisis Response (JRACR)2210-84912210-85052024-03-01141-79199Characteristic Analysis of the MS6.0 Ma'erkang Earthquake Sequence on Jun. 10, 2022Yu-ping Qi0Feng Long1Jun Li2Jun Su3Di Wang4Ling-zhe Kong5Meng-die Chen6Fang Du7Sichuan Earthquake Agency, Chengdu (610041), Sichuan, China;State Key Laboratory of Geodesy and Earth’s Dynamics, Innovation Academy for Precision Measurement Science and Technology, CAS, Wuhan (430077), Hubei, ChinaSichuan Earthquake Agency, Chengdu (610041), Sichuan, China;State Key Laboratory of Geodesy and Earth’s Dynamics, Innovation Academy for Precision Measurement Science and Technology, CAS, Wuhan (430077), Hubei, ChinaZhejiang Earthquake Agency, Hangzhou (310013), Zhejiang, ChinaSichuan Earthquake Agency, Chengdu (610041), Sichuan, ChinaSichuan Earthquake Agency, Chengdu (610041), Sichuan, ChinaSichuan Earthquake Agency, Chengdu (610041), Sichuan, ChinaSichuan Earthquake Agency, Chengdu (610041), Sichuan, ChinaSichuan Earthquake Agency, Chengdu (610041), Sichuan, ChinaOn June 10, 2022, the MS6.0 Ma'erkang earthquake sequence occurred in the Bayan Har block. In this paper, the temporal and spatial distribution and attenuation characteristics of earthquake sequence is analyzed based on the regional structure, the temporal and spatial distribution of earthquake sequence, the focal mechanism solution, and the parameters of earthquake sequence, using the data of Sichuan Seismic Network and the temporary stations incorporated into the network. The results show that: (1) The MS6.0 Ma'erkang earthquake sequence is generally distributed in NW-SE direction, and the long axis of this series is basically consistent with the nearby Songgang fault. (2) As the earthquake sequence is formed by three large events with MS ≥5.0, the frequency of small earthquakes in the earthquake sequence area generally attenuates relatively slowly, while the activity level (magnitude) of aftershocks attenuates rapidly. (3) After the MS5.2 earthquake, the sequence parameters obtained show that the h-value is 1.09 and the p-value is stable at 1.02, indicating that the intensity and frequency attenuation of the earthquake sequence are gradually stable and tend to be normal. The b-value is 0.95, indicating that the maximum aftershock magnitude of the series is estimated to be ML5.1, and the b-value gradually tended to be stable, indicating that the stress in the region gradually tended to be balanced after the MS5.2 earthquake. The MS4.4 (ML5.0) earthquake that occurred at 4:37 on June 10 (local time) is the largest aftershock after the MS5.2 earthquake in the sequence. (4) The Songgang fault with NW-SE trend is presumed to be the main seismogenic tectonics, but the migration of three earthquakes with MS≥5.0 may also indicate that the Songgang fault is not a single seismogenic tectonics, which requires further field scientific investigation and analysis.https://doi.org/10.54560/jracr.v14i1.439the ms6.0 ma'erkang earthquakeearthquake sequencecharacteristic analysissource parameters |
| spellingShingle | Yu-ping Qi Feng Long Jun Li Jun Su Di Wang Ling-zhe Kong Meng-die Chen Fang Du Characteristic Analysis of the MS6.0 Ma'erkang Earthquake Sequence on Jun. 10, 2022 Journal of Risk Analysis and Crisis Response (JRACR) the ms6.0 ma'erkang earthquake earthquake sequence characteristic analysis source parameters |
| title | Characteristic Analysis of the MS6.0 Ma'erkang Earthquake Sequence on Jun. 10, 2022 |
| title_full | Characteristic Analysis of the MS6.0 Ma'erkang Earthquake Sequence on Jun. 10, 2022 |
| title_fullStr | Characteristic Analysis of the MS6.0 Ma'erkang Earthquake Sequence on Jun. 10, 2022 |
| title_full_unstemmed | Characteristic Analysis of the MS6.0 Ma'erkang Earthquake Sequence on Jun. 10, 2022 |
| title_short | Characteristic Analysis of the MS6.0 Ma'erkang Earthquake Sequence on Jun. 10, 2022 |
| title_sort | characteristic analysis of the ms6 0 ma erkang earthquake sequence on jun 10 2022 |
| topic | the ms6.0 ma'erkang earthquake earthquake sequence characteristic analysis source parameters |
| url | https://doi.org/10.54560/jracr.v14i1.439 |
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