Remote seismic sensing

Methods and apparatus are provided for sensing motions of the earth caused by seismic waves from the doppler shift of reflected electromagnetic waves. The apparatus is based on a heterodyne continuous wave laser system.

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Bibliographische Detailangaben
Hauptverfasser: BERNI, ALBERT J
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Methods and apparatus are provided for sensing motions of the earth caused by seismic waves from the doppler shift of reflected electromagnetic waves. The apparatus is based on a heterodyne continuous wave laser system.