Open AccessInfrasound Radiated During the Montana Earthquake of 1959 August 18
Author(s) -
Cook Richard K.
Publication year - 1971
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1971.tb03393.x
Subject(s) - infrasound , seismology , geology , waveform , seismic wave , amplitude , geophysics , acoustics , meteorology , geography , telecommunications , engineering , physics , optics , radar
Summary Seismic waves caused by earthquakes radiate infrasound into the atmosphere as they proceed over the Earth's surface. Several instances of such sound waves radiated locally by seismic waves passing through the Washington, D.C., area have been observed at the infrasonic station there. A notable instance was the great Montana earthquake of 1959 August 18. Measurements of the radiated infrasound gave data on the seismic waves, including their travel times, local speeds, directions of travel, amplitudes, and waveforms.