SEISMOMETERS, SEISMOGRAPHS, SEISMOGRAMS 1. What is a ...
SEISMOMETERS, SEISMOGRAPHS, SEISMOGRAMS 1. What is a ...
SEISMOMETERS, SEISMOGRAPHS, SEISMOGRAMS 1. What is a ...
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modern global<br />
tomography<br />
incorporates<br />
information from<br />
many phases<br />
including CMB/<br />
surface reflections<br />
TRAVELTIMES OF MAJOR PHASES<br />
(a)<br />
TUC 88.8°<br />
(b)<br />
Mantle shear-wave tomography 2477<br />
S SS<br />
SSS<br />
SS<br />
SSSSS<br />
SSSS<br />
300 s<br />
S<br />
ScS<br />
SKS<br />
SSS<br />
SSSS<br />
d<strong>is</strong>tance: 88.8°<br />
velocity model: TNA<br />
Figure <strong>1.</strong> (a) A horizontally polarized se<strong>is</strong>mogram recorded in the western United States from<br />
an earthquake that occurred in the southern Pacific Ocean. Below the se<strong>is</strong>mogram <strong>is</strong> a synthetic<br />
se<strong>is</strong>mogram. Numerous phases that have good matches between the synthetic and data are<br />
labelled. The large arrival at the end of the se<strong>is</strong>mogram <strong>is</strong> the Love wave that cons<strong>is</strong>ts of SSSSS<br />
and higher-order multiples of S. Part (b) shows the paths taken by the phases labelled at the<br />
top, as well as the paths of phases that interact with the core, which, although not v<strong>is</strong>ible in
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