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Series Of Small Earthquakes: Recent research indicates that it may now be possible to control earthquakes. In the mid-1960s, the dumping of water-based waste into a well in Denver, Colorado, set up a series of small earthquakes. Thus the idea was born that by drilling deep holes along a fault, and then pumping water down, it might be possible to relieve strains in a series of small, non-destructive earthquakes instead of allowing them to build up until a major earthquake occurs [8].
Much work remains to be done before we are in a position to conclude whether earthquake prediction is possible. It may be possible, however, to trigger imminent earthquakes before they appear without knowing what causes them. A series of small earthquakes was apparently man-made near Denver, Colo., between 1962 and 1966, when liquid wastes containing radioactive material were pumped down a very deep well and forced into the pores of the surrounding rocks. Possibly the liquid created enough pressure in the rocks to unlock faults, releasing accumulated strains in the form of small earthquakes. This method of inducing small earthquakes may offer a way to forestall really large disasters.
Most volcanoes have a habit of issuii ings before they erupt. These take vario In Hawaii, as has been mentioned, measurement of the tilt of the ground small local earthquakes supply some of t dence. At Krakatau the series of events' culminated in the greatest explosion May 20, 1883, and continued in the f< termittent explosions throughout the that year. At Sakura-jima, Japan, in part of 1913, smoke began to issue mountain, local earthquakes increased |_ number, and springs on the mountain aa their flow.
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