Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting, and other deformations of the Earth's crust, changing measurements of the strain across a fault zone, and varying the electrical properties of underground rocks.
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Jessicajy 2015-06-21 13:25:26
Other way of looking at the parallel structure is 3 signs are: 1. sudden fluctuations in local seismic activity, tilting and other deformations 2. changes in the measured strain across a fault zone and 3. variations in the electrical properties of underground rocks.
