Results 1 to 10 of about 425,586 (205)
Seismicity distribution and focal mechanism solution of major earthquakes of northern Pakistan [PDF]
Acta Geodaetica et Geophysica, 2015 Pakistan is situated very close to the subduction zone of Indian-Arabian plates and Indian-Eurasian plates. Thus, it is a country with moderate to high seismicity with a large number of major earthquakes. Therefore, the severity of seismic hazards of major earthquakes is not ignorable. The seismicity of northern areas of Pakistan (33–37°N and 70–76°E),
Bajwa, Asif Ali +3 more
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Reliability of Focal Mechanism Solutions for Small and Medium Earthquakes Based on Different Methods
Taiyuan Ligong Daxue xuebao, 2022 Three representative small and medium earthquakes in Shanxi seismic belt in recent years were taken as examples. By using different methods, such as the first motion of P-wave, first motion of P-wave combining P/SV/SH amplitude ratio, CAP (Cut and Past),
Penghu GUAN +4 more
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地震科学进展, 2021 On June 9，2020，an earthquake measuring ML3.4 occurred in Shapotou District，Zhongwei City，Ningxia. The earthquake occurred in the meizoseismal area of the 1709 M7½ earthquake of South Zhongwei，and its epicenter is located in an area where there were ...
Yingcai Xu +3 more
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Relocation and focal mechanisms of the 2021 Wuzhong-Lingwu ML3.6 seismic swarm
地震科学进展, 2022 From July 18 to August 7 in 2021, a significant activity of ML3.6 earthquake swarm occurred in Wuzhong-Lingwu area, Ningxia. In this paper, the earthquake swarm are relocated using the multi-step locating method.
Yingcai Xu, Xianwei Zeng, Guofu Luo
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Applied Sciences, 2023 P-wave first-motion polarity is important for the inversion of earthquake focal mechanism solutions. The focal mechanism solution can further contribute to our understanding of the source rupture process, the fault structure, and the regional stress ...
Shuai Li +5 more
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Research of Focal Mechanism and Focal Depth of Qilian, Qinghai Ms5.2 Earthquake [PDF]
E3S Web of Conferences, 2019 This paper selects the waveform records of 16 broadband digital seismic stations in the regional seismic network of Gansu province, Qinghai province, and Sichuan province involved inversion, use CAP focal mechanism solution method to calculate the Ms 5.2
Gao Yongguo, Yin Xinxin
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Source parameters of the MS4.0 Lingwu earthquake on November 18th, 2021
地球与行星物理论评, 2022 An MS4.0 earthquake occurred in Lingwu, Yinchuan City, Ningxia Hui Autonomous Region at 20:42:54 BJT on November 18th, 2021. It was felt by almost all people in Lingwu and its surrounding area and attracted considerable concern in the society.
Yingcai Xu, Xianwei Zeng
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Frontiers in Earth Science, 2021 The 3 February 2020 MS 5.1 Qingbaijiang earthquake, southwestern China, is the closest recorded MS ≥ 5.0 event to downtown Chengdu City to date, with an epicentral distance of only 38 km. Here we analyze seismic data from the Sichuan and Chengdu regional
Min Zhao +5 more
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Dizhen xuebao, 2022 基于搜集到的2000—2018年滇西北地区MS≥3.0地震的震源机制解，运用线性叠加反演法进行应力场反演，分析了滇西北地区现今的构造应力状态，进一步探讨了应力张量方差的时空分布与地震活动的关系。结果显示：① 滇西北地区地震的震源机制解类型复杂，主要以走滑型（46%）为主，正断型（27%）次之；② 研究区的构造应力场具有整体的一致性和局部的非均匀性，呈现为NNW向挤压和ENE向拉张的走滑型应力结构，说明研究区受到来自NNW向的水平挤压作用，对该地区上地壳运动和断裂活动起主导作用；③ ...
Wenjie Fan, Xiaofeng Cui, Xiaoyan Zhao
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First-Motion Focal Mechanism Solutions for 2015–2019 M ≥ 4.0 Italian Earthquakes [PDF]
Frontiers in Earth Science, 2021 A list of 100 focal mechanism solutions that occurred in Italy between 2015 and 2019 has been compiled for earthquakes with magnitude M ≥ 4.0. We define earthquake parameters for additional 22 seismic events with 3.0 ≤ M < 4.0 for two specific key zones: Muccia, at the northern termination of the Amatrice–Visso–Norcia 2016–2018 central Italy ...
Maria G. Ciaccio +43 more
openaire +3 more sources