Preliminary Results of Anthropogenic Seismicity Monitoring in the Region of Song Tranh 2 Reservoir, Central Vietnam

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• 作者：Jan Wiszniowski ; Nguyen Van Giang ; Beata Plesiewicz ; Grzegorz Lizurek…
• 关键词：Key wordsreservoir induced seismicity ; seismic network ; source parameters ; focal mechanism ; completeness of catalogs
• 刊名：Acta Geophysica
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：63
• 期：3
• 页码：843-862
• 全文大小：842KB
• 刊物主题：Geophysics/Geodesy; Structural Geology; Geotechnical Engineering & Applied Earth Sciences;
• 出版者：Springer International Publishing
• ISSN：1895-7455
• 卷排序：63

文摘

Song Tranh 2 hydropower plant and the reservoir containing backed up water are located in the Quang Nam province (Central Vietnam). The region experiences unusual seismic activity related to the reservoir impoundment, with earthquakes of magnitude up to 4.7. In result of cooperation between the Institute of Geophysics, Vietnam Academy of Sciences and Technology and the Institute of Geophysics, Polish Academy of Sciences a seismic network has been built to facilitate seismic monitoring of the Song Tranh 2 area. The network, operating since August 2013, consists of 10 seismic stations. Here we show that the network is sufficient for advanced data processing. The first results of monitoring of the earthquake activity in Song Tranh 2 area in the period between 2012 and 2014, especially the completeness of catalogs, study and comparisons between water level and the seismic activity suggest direct connection between reservoir exploitation and anthropogenic seismicity.