Induced Seismicity

A workshop on Induced Seismicity was organized during the 27th General Assembly of the International Association of Seismology and Physics of Earth's Interior (IASPEI) in Wellington, New Zealand during January 10-21, 1994. This volume presents a collection of 16 papers accepted for publication which accrued from this workshop. The first three papers address mining activity related to induced seismicity. The fourth paper deals with water injection induced seismic activity, while the remaining 12 papers treat several aspects of water reservoir induced earthquakes. Globally, the Koyna dam creating Shivajisagar Lake in Maharashtra, India, continues to be the most significant site of reservoir-induced earthquakes. With the increase in the number of cases of induced seismicity, there is a growing concern among planners, engineers, geophysicists and geologists to understand the environment conducive to this phenomenon. While the changes in pore-fluid pressure have been identified as the key factor in inducing earthquakes, the phenomenon itself is still poorly understood. This reality thus makes the study of the induced seismicity very important and this volume timely.

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Source Parameters of Mining-induced Seismic Events: An Evaluation of Homogeneous and Inhomogeneous Faulting Models for Assessing Damage Potential.- Induced Seismicity in the Khibiny Massif (Kola Peninsula).- The CQU Regional Seismic Network and Applications to Underground Mining in Central Queensland, Australia.- Research on Earthquakes Induced by Water Injection in China.- Earthquake Activity in the Aswan Region, Egypt.- Sensitivity of a Seismically Active Reservoir to Low-amplitude Fluctuations: Observations from Lake Jocassee, South Carolina.- The Microseismic Network of the Ridracoli Dam, North Italy: Data and Interpretations.- Investigations of June 7, 1988 Earthquake of Magnitude 4.5 near Idukki Dam in Southern India.- Application of Stress-pore Pressure Coupling Theory for Porous Media to the Xinfengjiang Reservoir Earthquakes.- Unstable Steam-water Convection as Possible Trigger to Earthquakes.- Assessment of Potential Strength of an Induced Earthquake by Using Fuzzy Multifactorial Evaluation.- Role of Dykes in Induced Seismicity at Bhatsa Reservoir, Maharashtra, India.- Speculation on the Causes of Continuing Seismicity Near Koyna Reservoir, India.- Seismicity of the Koyna Region and Regional Tectonomagmatism of the Western Margin (India).- Tomographic Inversion for the Three-dimensional Seismic Velocity Structure of the Aswan Region, Egypt.- Reservoir Associated Characteristics Using Deterministic Chaos in Aswan, Nurek and Koyna Reservoirs.