Earthquake Monitoring and Study in the Jingpohu Volcano Cluster Area |
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Authors: | Liu Zhi Duan Yonghong Xu Zhaofan Yuan Qinxi Yang Jian and Zhou Xuesong |
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Institution: | Ceophysieal Exploration Center, China Earthquake Administration,Zhengzhon 450002 China |
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Abstract: | Seismicity in the Jingpohu volcanic area was investigated based on the seismic data recorded by the mobile seismic network consisting of 14 stations equipped with 24-bit broad-band 3- component seismographs around Crater Forest. Results show that there appears certain seismicity in Jingpohu and its adjacent areas with a low activity level and most of the recorded earthquakes are the volcanic-tectonic ones. The results of location indicate a dominant focal depth of 10km - 30km, most of the earthquakes are smaller than ML>2.0, and are concentrated in the area of "Crater Forest" and on the Dunhua-Mishan fault which runs through the volcanic area. At station No.2, which has better observation conditions, two types of events, likely associated to volcanism, were recorded; their waveform characteristics are somewhat similar to that of the long-period volcanic event and the volcanic tremor, but with different feature of frequencies. |
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Keywords: | Jingpohu volcano Earthquake type Seismicity Earthquake location |
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