Characteristics of recent seismicity and stress fields in Anhui sector of the Tan-Lu fault zone

Characteristics of recent seismicity and stress fields in Anhui sector of the Tan-Lu fault zone

The characteristics of recent earthquake activity in Anhui sector of the Tan-Lu fault zone was analyzed in this paper. Based on data of 99 moderate-small earthquakes along the fault, the focus mechanism was inversed by the method of maximum amplitude ratio of the first arrival wave in the Anhui loca...

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Veröffentlicht in:Dizhi kexue 2006-04, Vol.41 (2), p.278-290
Hauptverfasser: Liu, Dongwang, Xia, Ruiliang, Liu, Zemin, Shen, Xiaoqi, Li, Minli, Yan, Suping
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creator Liu, Dongwang
Xia, Ruiliang
Liu, Zemin
Shen, Xiaoqi
Li, Minli
Yan, Suping
description The characteristics of recent earthquake activity in Anhui sector of the Tan-Lu fault zone was analyzed in this paper. Based on data of 99 moderate-small earthquakes along the fault, the focus mechanism was inversed by the method of maximum amplitude ratio of the first arrival wave in the Anhui local seismic network. According to these results and using statistics and focus mechanism systematic cluster analysis method, the characteristics of tectonic stress field and the focus fault rupture were quantitatively analyzed along the fault and its neighboring areas. The results showed that the recent earthquake activities in Anhui sector of the Tan-Lu fault zone inherited the historical seismic features in the space distribution, and the intensity of recent earthquakes did not show buildup trend. The superior azimuth of P ax is and T ax is in both the whole fault zone and the adjacent Anhui sector were about EW and NS, which meant that the effective recent force might be mainly near level or inclined, but there we
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Based on data of 99 moderate-small earthquakes along the fault, the focus mechanism was inversed by the method of maximum amplitude ratio of the first arrival wave in the Anhui local seismic network. According to these results and using statistics and focus mechanism systematic cluster analysis method, the characteristics of tectonic stress field and the focus fault rupture were quantitatively analyzed along the fault and its neighboring areas. The results showed that the recent earthquake activities in Anhui sector of the Tan-Lu fault zone inherited the historical seismic features in the space distribution, and the intensity of recent earthquakes did not show buildup trend. The superior azimuth of P ax is and T ax is in both the whole fault zone and the adjacent Anhui sector were about EW and NS, which meant that the effective recent force might be mainly near level or inclined, but there we</abstract><tpages>13</tpages></addata></record>
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title Characteristics of recent seismicity and stress fields in Anhui sector of the Tan-Lu fault zone
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