The seismic hazard at Tehri dam

Abstract

The proposed 265 m high Tehri dam in India would lie in one of the most hazardous areas in the world with respect to earthquakes. A magnitude 8 or greater earthquake may be expected under the dam. Due to the unique tectonic setting and lack of detailed studies, little is known about the expected ground in motion, but indirect evidence suggests acceleration of over l g can be expected. In these circumstances the dam design should be subject to the most rigorous dynamic analysis.