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Seismic signals of a meteor wave.

Seismic signals of a meteor wave

In the early morning hours of Sept. 19, 1986, a resident of Yellowknife, Northwest Territories, saw a meteor streak by overhead. Frank M. Anglin and Raymond A. W. Haddon at the Geological Survey of Canada in Ottawa report in the Aug. 13 NATURE that they subsequently found seismic signals at the Yellowknife seismic array that were probably generated by the shock wave created by the meteor as it moved through the atmosphere. There have been two previous reports of seismically detected meteors, but the researchers write that theirs is "the first unambiguous [observation] of a shock wave and associated seismic waves generated by a meteoroid and observed by an array of closely spaced seismometers.'
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Publication:Science News
Date:Aug 22, 1987
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