| Abstract Submission No. | ABS-3.1-0068 |
| Title of Abstract | A Decade of Borehole Seismological Studies in the Koyna¿Warna Region, India: Challenges and Achievements |
| Authors | Dr H V S Satyanarayana* |
| Organisation | CSIR-NGRI |
| Address | Dr H V S Satyanarayana Hyderabad, English, India Pincode: 500007 E-mail: hvsatya@ngri.res.in |
| Country | India |
| Presentation | Oral |
| Abstract | The Koyna¿Warna region of Maharashtra, western India, is the world¿s most prominent site of reservoir-triggered seismicity (RTS), active since the impoundment of the Koyna Dam in 1962. To advance earthquake research in this natural laboratory, CSIR¿NGRI, with the support of the Ministry of Earth Sciences (MoES), Government of India, established the country¿s first borehole seismic network¿unique in its scale and depth¿with sensors deployed at 1¿1.5 km. Operational for more than a decade, this initiative represents a landmark in Indian seismology. The establishment of the network posed significant challenges. A crucial step was the selection, customization, and configuration of borehole seismometers to suit the drilled borehole conditions and depths of installation. This customization proved vital, as the instruments have remained uninterrupted and fully functional for over a decade. In parallel, indigenous tools and procedures were developed for installation, coupling, and long-term stability at depths exceed |
| Keywords | RTS, Borehole seismometers, micro seismic activity |