Wave propagation in multilayered media: the effect of waveguides in oceanic and continental Earth models
Item
Title (Dublin Core)
en-US
Wave propagation in multilayered media: the effect of waveguides in oceanic and continental Earth models
Description (Dublin Core)
en-US
We investigate the effect of low-velocity waveguides on ground motion. The computation of eigenvalues and eigenfunctions of Rayleigh waves up to the frequency 10.0 Hz allows an analysis of the seismic response which is source independent. The main conclusions of this study are: (1) Extending the model to depths greater than that of the waveguides allows the exact computation of leaking modes. (2) A source in a layered structure generates P waves of higher frequency than S waves even if the structure is purely elastic. (3) At high frequencies (10.0 Hz) the modal components of P waves separate from those of SV waves. (4) Strong surface waves are generated by shallow sources in sedimentary basins, also at a source distance of a few tens of kilometres. These waves do not appear in structures without sediments. (5) The polarization of strong ground motion at the surface of low-velocity layers is mainly horizontal. (6) For oceanic models, the contribution of the sedimentary layers is separable from that of the water layer only at high frequencies.
ARK: https://n2t.net/ark:/88439/y014925
Permalink: https://geophysicsjournal.com/article/294
ARK: https://n2t.net/ark:/88439/y014925
Permalink: https://geophysicsjournal.com/article/294
Creator (Dublin Core)
Chiaruttini, C.
Costa, G.
Panza, G.F.
Subject (Dublin Core)
en-US
Seismic waveguides
en-US
Sedimentary basins
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Oceanic sediments
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Rayleigh modes
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Synthetic seismograms
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Methods
Publisher (Dublin Core)
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Journal of Geophysics
Date (Dublin Core)
1985-12-19
Type (Dublin Core)
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
en-US
Peer-reviewed Article
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/294
Source (Dublin Core)
en-US
Journal of Geophysics; Vol 58 No 1 (1985): Journal of Geophysics; 189-196
2643-2986
2643-9271
Language (Dublin Core)
eng
Relation (Dublin Core)
https://journal.geophysicsjournal.com/JofG/article/view/294/251