eprintid: 2024 rev_number: 19 eprint_status: archive userid: 9 dir: disk0/00/00/20/24 datestamp: 2017-10-04 12:06:59 lastmod: 2018-09-07 13:10:18 status_changed: 2017-10-04 12:06:59 type: article metadata_visibility: show creators_name: Lizurek, Grzegorz creators_name: Wiszniowski, Jan creators_name: Van Giang, Nguyen creators_name: Plesiewicz, Beata creators_name: Van, Dinh Quoc creators_id: lizurek@igf.edu.pl creators_id: jwisz@igf.edu.pl creators_id: giangnv@igp-vast.vn creators_id: bples@igf.edu.pl creators_id: giangnv@igp-vast.vn corp_creators: Institute of Geophysics, Polish Academy of Sciences (IG PAS) corp_creators: Institute of Geophysics, Polish Academy of Sciences (IG PAS) corp_creators: Institute of Geophysics, Vietnam Academy of Science and Technology (IGP VAST) corp_creators: Institute of Geophysics, Polish Academy of Sciences (IG PAS) corp_creators: Institute of Geophysics, Vietnam Academy of Science and Technology (IGP VAST) title: Clustering and Stress Inversion in the Song Tranh 2 Reservoir, Vietnam subjects: MP2_3 subjects: MP6 subjects: RV2 subjects: SR divisions: EPOS-ESI5 full_text_status: none abstract: The seismicity in the vicinity of the Song Tranh 2 reservoir that commenced in late 2010 is an example of reservoir‐induced seismicity. Moment tensor (MT) solutions are mostly normal‐faulting mechanisms with shearing as the main component of full MT, which suggest reservoir exploitation stress field changes as a triggering origin of this seismicity. However, the local tectonic stress field plays a role in the seismogenic process, which is accelerated by the reservoir exploitation. Two main orientations of discontinuities reactivated by reservoir exploitation are identified, with clustering of events located in two main areas: northern and southern. In addition to the northern cluster (NC) and southern cluster (SC), further smaller clusters are distinguishable, assuming both clustering of epicenters and similarity of focal mechanisms as the clustering criteria. Maximum seismic activities in clusters appear in different periods, with high seismicity in the SC preceding that in the NC. The results indicate significant differences between the NC and SC. It is shown that the SC is an example of rapid triggering, whereas the NC is a delayed triggering type. Also, magnitude distribution differs between the NC ( b≈1.1b≈1.1 ) and SC ( b≈1.3b≈1.3 ). date: 2017-09 date_type: published publication: Bulletin of the Seismological Society of America publisher: Seismological Society of America pagerange: 1-13 id_number: 10.1785/0120170042 issn: 0037-1106 official_url: https://pubs.geoscienceworld.org/bssa/article-abstract/doi/10.1785/0120170042/516639/clustering-and-stress-inversion-in-the-song-tranh?redirectedFrom=fulltext access_IS-EPOS: limited owner: Publisher acknowledgments2: IS-EPOS_platform acknowledgments2: IS-EPOS_project citation: Lizurek, Grzegorz and Wiszniowski, Jan and Van Giang, Nguyen and Plesiewicz, Beata and Van, Dinh Quoc (2017) Clustering and Stress Inversion in the Song Tranh 2 Reservoir, Vietnam. Bulletin of the Seismological Society of America. pp. 1-13. DOI: https://doi.org/10.1785/0120170042