# Dictionary:Wavefront method

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{{#category_index:W|wavefront method}}
A seismic interpretation method (often graphical) which involves reconstructing emerging wavefronts from the arrival times at various geophones from a common source (or the equivalent). The wavefront for the time *t* is constructed by striking circles (assuming constant velocity) about each geophone position of radius (*t*_{1}–*t*)*V*, where *t*_{1} is the traveltime observed by that geophone and *V* is the velocity of the upper layer; see Figure W-6. Similar wavefronts can be constructed from other source points or from the reversed profile of a refraction interpretation. The solution that locates the reflector or refractor must satisfy the observed arrival times. See Rockwell (1967).