Abstract
AbstractFirst arrival refraction data does not normally provide any indication of the velocity inversion problem. However, under certain favourable circumstances, when the low‐velocity layer (LVL) is considerably thicker than the overlying higher‐velocity layer (HVL), the velocity inversion can be seen in the form of a traveltime skip. Model Studies show that in such cases the length of the HVL traveltime branch can be used to determine the thickness of the HVL and the magnitude of the traveltime skip in order to determine the thickness of the LVL. This is also applicable in the case of field data.
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