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EXTENSION TO THREEDIMENSIONAL PROBLEMS CONCERNING AN APPROXIMATE CORRECTION METHOD FOR REFRACTION IN REFLECTION SEISMIC PROSPECTING *
Author(s) -
KREY TH.
Publication year - 1954
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.1954.tb01280.x
Subject(s) - reflection (computer programming) , prospecting , refraction , point (geometry) , extension (predicate logic) , geology , direction vector , gemology , projection (relational algebra) , plane (geometry) , optics , tensor (intrinsic definition) , geometry , geodesy , mathematics , physics , seismology , engineering geology , computer science , algorithm , mining engineering , volcanism , tectonics , programming language
A bstract The formulas derived by the author in a preliminary paper for taking into consideration refraction when dealing with the problem of a vertical plane are extended to the three‐dimensional case. Vector analysis is extensively applied. Among others it is shown that in the general case the 3 horizontal twodimensional vectors, i.e.1) the gradient of the time of reflection 2) the direction of true dip 3) the vector from the shot point to the projection of the reflecting point, point into 3 different directions.