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

Wiszniowski, Jan and Giang, Nguyen Van and Plesiewicz, Beata and Lizurek, Grzegorz and Van, Dinh Quoc and Khoi, Le Quang and Lasocki, Stanislaw (2015) Preliminary Results of Anthropogenic Seismicity Monitoring in the Region of Song Tranh 2 Reservoir, Central Vietnam. Acta Geophysica, 63 (3). pp. 843-862. DOI: https://doi.org/10.1515/acgeo-2015-0021

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Official URL: http://dx.doi.org/10.1515/acgeo-2015-0021

Abstract

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.

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Item Type: Article
Uncontrolled Keywords: reservoir induced seismicity; seismic network; source parameters; focal mechanism; completeness of catalogs
Subjects: Methodology > Method and procesing > Source parameter estimation
Methodology > Method and procesing > Collective properties of seismicity > Source size distribution
Methodology > Method and procesing > Technology-seismicity interaction
Region > Vietnam > Quang Nam Province
Inducing technology > Reservoir impoundment
Project: IS-EPOS project > SONG TRANH: Deep water reservoir
EPOS-IP > SONG TRANH: Deep water reservoir