Open AccessThe Seismic Crustal Function of the Earth
Author(s) -
Shimshoni M.,
Pekeris C. L.
Publication year - 1966
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1966.tb03487.x
Subject(s) - crust , geology , epicenter , earth (classical element) , function (biology) , geophysics , seismology , structure of the earth , scale (ratio) , geodesy , earth crust , seismic wave , physics , mathematical physics , quantum mechanics , evolutionary biology , biology
Summary Assuming a spherically symmetrical Earth, usual travel time tables are functions of distance only. It is well known that this assumption is not strictly correct, and that local corrections to the times are needed. Such corrections are dependent on the location of both the epicentre and the recording station. We are attempting to express these corrections for P waves in a mathematical form as an expansion in functions which are symmetrical with respect to the source and the observing station. Data used to date come from recordings of nuclear explosions, and results obtained are promising. The correction function obtained should chiefly depend on the constitution of the crust, and one might be able to deduce large‐scale crustal variations from it.