Reservoir Induced EarthquakesBy
- H.K. Gupta, Cochin University of Science and Technology, Cochin India, and Programs in Geosciences, The University of Texas at Dallas, Richardson, TX, USA
Since the publication of the first Dams and Earthquakes in 1976, the phenomenon of reservoir induced seismicity (RIS) is more widely understood. There are now over 70 known cases of reservoir-induced earthquakes. These damaging earthquakes have occurred in China, Kariba, Zambia, Greece, Kremasta, Koyna, India, California and elsewhere. The December 10, 1967 Koyna earthquake, with a magnitude of 6.3 claimed over 200 lives, injured 1500 and rendered thousands homeless.
Because of the ever increasing demand for dam construction, for power generation, irrigation, and flood control, it is necessary to understand how, where and why induced earthquakes occur. Recent research has demonstrated that when suitable physical measurements of rock properties are made, a fairly accurate model of induced seismicity can be obtained. It appears possible to mitigate the hazard of RIS through manipulation of reservoir levels.
The present volume is an updated and revised follow-up to the 1976 book. It presents an overview of the world-wide distribution of RIS, the salient aspects of RIS at specific reservior sites where earthquakes of M〉5 have occurred and where new results on RIS are reported, and how they differ from the normal earthquake sequences. An examination of the non-occurrence of induced earthquakes in the vicinity of the Himalyan reservoirs and other related topics such as: the size of the largest induced earthquake that could occur at a given reservoir site; prediction of induced earthquakes; and dam site investigations which should be completed during the planning and operation of the reservoirs are also included.
Developments in Geotechnical Engineering
Published: March 1992
Reservoir-Induced Earthquakes is an important and timely account requiring only BS-level geology/geophysics background for ready comprehension. RIS will be a helpful aquisition to all earth science and geoengineering libraries and laboratory collections.
- Foreword. Preface. 1. Introduction. 2. Worldwide distribution of reservoir-induced seismicity. 3. Hsingfengkiang and other RIS sites in the People's Republic of China. 4. Koyna Dam, India. 5. Oroville Dam, California. 6. Nurek and Toktogul reservoirs, U.S.S.R. 7. RIS in South Carolina, U.S.A. 8. Aswan Dam, Egypt. 9. Bhatsa Dam, India. 10. Other RIS sites. 11. Reservoir-induced earthquake characteristics. 12. Mechanism of reservoir-induced earthquakes. 13. Himalayan dams and RIS. (Why Himalayan reservoirs do not induce earthquakes?). 14. Further topics. References. Author index. Subject index.