Open AccessA Note on Normal Incidence Reflections from the Mohorovičiȳ Discontinuity
Author(s) -
O'Brien P. N. S.
Publication year - 1965
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.1965.tb06324.x
Subject(s) - discontinuity (linguistics) , seismology , reflection (computer programming) , amplitude , geology , multiple , explosive material , noise (video) , ambient noise level , geophysics , acoustics , physics , optics , mathematics , computer science , mathematical analysis , geography , sound (geography) , arithmetic , archaeology , geomorphology , artificial intelligence , image (mathematics) , programming language
Summary Very approximate calculations are made of the expected amplitude and frequency of seismic pulses reflected from the Mohorovičiȳ discontinuity. In deep oceans the effect of layer 2 is all important, as multiples generated within it may obscure any Moho reflection. In both land and oceanic areas charges of at least 100 Ib of explosive will be necessary to raise any Moho reflection above ambient background noise and particular care will have to be taken to eliminate shot‐generated noise. It is most desirable to record on magnetic tape so that optimum playback techniques may be used to maximize the signal‐to‐noise ratio.