Open AccessObserved and Computed Seismogram Sections for the Whole Earth *
Author(s) -
Müller G.,
Kind R.
Publication year - 1976
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.1976.tb00302.x
Subject(s) - geology , seismogram , seismology , earth (classical element) , synthetic seismogram , geophysics , mathematics , mathematical physics
Summary Seismogram sections were constructed from long‐period WWNSS and CSN records for a shallow earthquake near Sumatra. The components are vertical, horizontal radial and horizontal transverse, epicentral distances extend from 20° to 170°, and the time interval includes body waves arriving up to 30 min after the first arrival. A method is described which allows the calculation of corresponding theoretical seismogram sections for the generalized Lamb's problem, i.e. for a vertical single force at the surface of a spherically layered earth model. When applied to the classical Lamb's problem, good agreement with the original results (Lamb) is found. Theoretical seismograms for the whole earth are dominated by shear phases and related phases, for instance S, its multiples SS to S7, SP+PS and the shear‐coupled (leaking) PL modes associated with S, SS and SSS .