Language: English - ISBN-10: 0444566821 - ISBN-13: 978-0444566829
Dams and Earthquakes deals with the association of earthquakes and large
artificial lakes, particularly on the part that pore pressure plays in
inducing earthquakes. The book also contains methods for recording
seismic activity, before, during, and after the filling of reservoir
dams through the installation of a network of portable seismographs. The
text assesses the parameters and macroseismic effects of the Koyna
earthquake in India in December 1967, as well as the instrumental and
macroseismic data showing that the Koyna earthquake is a multiple
seismic event. The book investigates the geology, hydrology, and
seismicity of seismic reservoir sites, including three cases of induced
seismicity after fluid injections in deep wells. A possible correlation
between the reservoir level or volume of the injected fluid and the
tremor frequency exists. The characteristic seismic features of
reservoir associated earthquakes can reflect changes in the mechanical
properties of rock masses near the reservoirs. The book also
investigates the part played by increased pore-fluid pressures in
triggering the earthquakes at Denver, Rangely, Kariba, Kremasta and
Koyna. The UNESCO Working Group on "Seismic Phenomena Associated with
Large Reservoirs" recommends the adoption of a two-phase planning in
instrumental studies and surveys at sites to be used for large
reservoirs. The book can be beneficial for meteorologists,
environmentalists, geologists, civil engineers, structural engineers, or
for officers of river and lake authorities.