Translations:Dual-sensor wavelet estimation/11/en

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The net result is that seismic processing simply cannot be done with conventionally recorded data unless one is willing to make traveling-wave assumptions. However, no traveling-wave assumption has to be made if a dual sensor (that is, both a geophone and a hydrophone) is used as the receiver. A dual sensor provides both the hydrophone signal and the geophone signal (Canales and Bell, 1996[1]). Let us give an example (Figure 19). The geophone and hydrophone signals are out of phase. As a result, it can be concluded that the event is a traveling upgoing wave. On the other hand, if the geophone and hydrophone signals were in phase, the event would be a traveling downgoing wave.

  1. Canales, L. L., and M. L. Bell, 1996, Ghost attenuation using dual sensor cable: 66th Annual International Meeting, SEG, Expanded Abstracts, 1591-1594.