eprintid: 906 rev_number: 26 eprint_status: archive userid: 2 dir: disk0/00/00/09/06 datestamp: 2015-02-11 11:54:56 lastmod: 2017-02-08 12:21:43 status_changed: 2015-04-27 09:39:20 type: article metadata_visibility: show creators_name: Trieu, Cao Dinh creators_name: Trong, Cao Dinh creators_name: Dung, Le Van creators_name: Tuan, Thai Anh creators_name: Van, Dinh Quoc creators_name: Long, Ha Vinh creators_id: vag-sec@fpt.vn creators_id: creators_id: creators_id: creators_id: creators_id: corp_creators: Institute of Geophysics, Vietnam Academy of Sciences and Technology (VAST), Hanoi, Vietnam title: Triggered earthquake study in Tranh River No. 2 (Vietnam) Hydropower Reservoir ispublished: pub subjects: RV subjects: SR subjects: SS divisions: EPOS-ESI5 full_text_status: none keywords: Triggered Earthquakes Reservoir Tranh River Faults Epicenters Hypocenter Vietnam abstract: This article presents the results of investigating triggered earthquakes in the vicinity of Tranh River No.2 Hydropower Reservoir in recent years. It is found that earthquakes occurred in the vicinity of Tranh River Hydropower Reservoir, probably associated with the Trà My — Trà BÓng fault zone. It is estimated that this fault is capable of hosting an earthquake of M~6.1. The ‘b’ value for this earthquake sequence is 0.83, which is higher than the regional ‘b’ value of 0.60. We estimate that the return period of earthquakes of M=4.5, 5.0, 5.5 and 6.0 is 11, 29, 76 and 198 months respectively. On October 22, 2012 an earthquake MS=4.6, I0=6.0 (MSK-64) occurred at 13:41:28 hrs GMT. The epicenter of the earthquake was located at a distance of 5.5 km away from the center of the dam towards the west. The focal depth is about 4.5 km, and the rupture length is about 1.8 km. date: 2014-09 date_type: published publication: Journal of the Geological Society of India volume: 84 number: 3 publisher: Springer Verlag pagerange: 319-325 id_number: doi:10.1007/s12594-014-0135-x refereed: TRUE issn: 0016-7622 official_url: http://dx.doi.org/10.1007/s12594-014-0135-x access_IS-EPOS: limited owner: Publisher citation: Trieu, Cao Dinh and Trong, Cao Dinh and Dung, Le Van and Tuan, Thai Anh and Van, Dinh Quoc and Long, Ha Vinh (2014) Triggered earthquake study in Tranh River No. 2 (Vietnam) Hydropower Reservoir. Journal of the Geological Society of India, 84 (3). pp. 319-325. DOI: https://doi.org/10.1007/s12594-014-0135-x