Drilling Projects By
Climate & Ecosystems
Sustainable Georesources
Natural Hazards
World
Geological Time
Asia
- Maps of Asia
- Boso Peninsula (Japan)
- Chelungpu (Taiwan)
- Dead Sea (Israel)
- Donghai (China)
- Hanoi (Vietnam)
- Koyna (India)
- Lake Baikal (Russia)
- Lake Biwa (Japan)
- Lake El'gygytgyn (Russia)
- Lake Issyk-Kul (Kyrgyzstan)
- Lake Nam Co (China)
- Lake Qinghai (China)
- Lake Towuti (Indonesia)
- Lake Van (Turkey)
- Mutnovsky Volcano (Russia)
- Nankai Trough (Japan)
- NE Japan
- North Anatolian Fault (Turkey)
- Oman
- Ryukyu Islands (Japan)
- Songliao Basin (China)
- Songliao - MW-DUL (China)
- Unzen Volcano (Japan)
- Yangtze Craton (China)
Reservoir Triggered Earthquakes at Koyna, India
Scientific Deep Drilling
The Koyna Dam located close to the west coast of India is the most outstanding example of Reservoir Triggered Seismicity RTS, where triggered earthquakes have been occurring in a restricted area of 20x30 sq km since the impoundment of Shivajisagar Lake in 1962. These include the largest triggered earthquake of M~6.3 on Dec 10 1967, 22 earthquakes of M>5, about 200 earthquakes of M~4, and several thousand smaller earthquakes since 1962. The earthquake frequency increases every year following the monsoon rains in the months of June and July; almost every year one or more M~4 earthquakes occur. There is no other source of seismic activity within 50 km of the Koyna Dam.
