Lesson No. 13: Elements of “Dip-Shooting”
Published:January 01, 1959
It has probably occurred to some of the readers that the basis of interpretation by means of the so-called “dip-shooting” method can be found in the last two lessons. It is therefore opportune at this stage to include some pages in which we shall attempt to outline the general ideas and, by a few exercises, to direct the reader's attention to the possibilities of the method.
Suppose, then, that centering about a point P, at a distance x from a shotpoint 0, we have a spread of pickups, Δx in overall length, in line with 0 and over which a reflected wave-front shows a difference in travel-time of Δt (of Figure 37). If, as usual, we indicate the emergence angle of this wave-front at P by α, then we have, for practical purposes, the relation
Figures & Tables
Lessons in Seismic Computing
“An elementary text and problem book containing 44 lessons in seismology arranged for selection or combination to cover the normal 36-week course, or for condensation into an 18-week course. The lessons begin without assuming more than secondary school mathematics. An elementary knowledge of calculus is desirable, though not required, for the last half of the book.”