Long Earthquake Waves
Seismologists are tuning their instruments to record earth motions with periods of one minute to an hour and amplitudes of less than .01 inch. These waves tell much about the earth's crust and mantle
Seismologists are tuning their instruments to record earth motions with periods of one minute to an hour and amplitudes of less than .01 inch. These waves tell much about the earth's crust and mantle