Results 41 to 50 of about 7,106,654 (320)
Application of simulated annealing to focal mechanism determination [PDF]
, 2015 Simulated annealing (SA) is known as one of the efficient methods for global optimization. It allows for getting an optimal solution by jumping out of local minimum.
Komatsu, Masanao, Takenaka, Hiroshi
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Geomatics, Natural Hazards & Risk, 2022 The Palu earthquake, with a magnitude of 7.5, severely devastated the region in Central Sulawesi, Indonesia, but the mechanism of dynamic rupture considering in-situ conditions is not well understood.
Kanghua Zhang +3 more
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Spatial distribution and focal mechanism solutions of the Wenchuan earthquake series: Results and implications [PDF]
Earthquake Science, 2011 We relocate the spatial distribution of the devastating 12 May 2008 Wenchuan earthquake and its aftershocks. The relocation database is obtained from 89 stations deployed by the China Earthquake Administration, including 54 525 seismograms from 1 376 local earthquakes over MS3.5 between 12 May 2008 and 3 August 2008.
Chen Cai +7 more
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Dizhen xuebao, 2019 基于2009年1月至2017年11月首都圈地区发生的8 061个地震事件的23 293条P波初动极性数据，采用改进的格点尝试法计算了首都圈地区单次地震的震源机制解和小震综合断层面解。在初步分析这些数据的基础上，利用计算得到的单次地震的震源机制解和搜集到的已有历史地震的震源机制解数据，运用线性反演法对首都圈地区构造应力场的时空变化特征进行了研究。结果显示：① 研究区的地震震源机制解类型以走滑型为主，正断型次之，这些地震震源机制解的P轴方位大都为ENE向和近EW向，与该地区的构造应力场方向基本一致 ...
Wenjie Fan +3 more
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Geophysical Journal International, 2022 SUMMARYEarthquake source parameters play a fundamental role in evaluating seismic hazard. In many countries, the relatively low accuracy of the earthquake source parameters owing to sparse seismic monitoring networks prevents accurate seismic hazard evaluation.
Nematollah Ghayournajarkar, Yo Fukushima
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Dizhen xuebao, 2022 搜集了盈江及其邻区5组地震序列震源机制解并反演得到该区域的构造应力场。研究结果显示：盈江地区整体主压应力以NNE向为主，主张应力以ESE向为主；但其局部应力场不完全一致，沿苏典断裂分布的主压应力轴走向随着断裂走向由北向南延伸角度逐渐向北偏移，而盈江地区的西南部，其主压应力走向更偏向于东，这可能与大盈江断裂的横向拉伸有关。此外，本研究通过应力场反演识别出了5组地震序列震源机制解的主发震断层节面的走向、倾角、滑动角及发震断层的摩擦系数，为今后该区域的地震研究及地壳动力学变迁提供了参考。
Bing Feng +5 more
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Focal mechanism and seismogenic structure of the Shiqu MS4.4 earthquake
Earthquake Research Advances, 2021 The focal mechanism solution of the Shiqu MS 4.4 earthquake occurred on May 16th, 2017 in Sichuan Province is studied by the gCAP method using the waveform data from the regional seismic networks in Sichuan, Qinghai, Tibet and Gansu provinces. The strike/
Yanming Yang, Shubo Wang, Riya Su
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Earthquake Science, 2022 The Xiluodu (XLD) reservoir is the second largest reservoir in China and the largest in the Jinsha River basin. The occurrence of two M > 5 earthquakes after reservoir impoundment has aroused great interest among seismologists and plant operators.
Hongfu Lei +5 more
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2013 Seismic swarm recorded in Galati area, Romania: focal mechanism solutions [PDF]
Acta Geodaetica et Geophysica, 2016 An unusual seismic swarm started on September 23, 2013, close to Galati city, in Izvoarele region (Romania), and lasted until November 12, 2013. 406 earthquakes were recorded during several phases of seismic activity. The strongest events—a magnitude 3.9 earthquake, occurred on September 29, and two ML 3.8 shocks, occurred on October 3 and 4 ...
Craiu, Andreea +3 more
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The earthquake monitoring system in the South China Sea Tsunami Advisory Center
地震科学进展, 2022 This paper briefly reviewed the initiation steps and developments of the South China Sea Region Tsunami Warning and Mitigation Systems. In addition, we highlighted the structure and basic functions of the earthquake monitoring and processing system of ...
Zhiguo Xu +3 more
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