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Seismic Reflection Surveys

A Vibroseis crew at work in Ontario. Four Vibroseis (sound source) trucks in the foreground; two recording trucks in the background.

These huge trucks work in unison, each lifting itself up on a vibrator plate which sends selected seismic signals into the ground, which then are reflected from underground reflectors and detected by the geophones placed into or on the ground. These, in turn, feed this information into amplifiers and then into computers which record and store the data. One television reporter called these large trucks "dancing elephants".

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