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Velocity structure of the subducted Yakutat Terrane, Alaska: Insights from guided waves

Abstract:

Dispersed P wave arrivals from intermediate-depth earthquakes in the Alaskan subduction zone provide insight into the low-velocity structure of the subducting oceanic crust. P wave arrivals from 41 earthquakes in the eastern section of the arc show significant guided wave dispersion, with high-frequency ( > 1 Hz) energy delayed by up to 2-3 s. We simulate this dispersion using a 2-D finite difference waveform propagation model, systematically varying both P wave velocity and low-velocity l...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1002/2017GL076583

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Institution:
University of Oxford
Division:
MPLS Division
Department:
Earth Sciences
Role:
Author
Publisher:
American Geophysical Union Publisher's website
Journal:
Geophysical Research Letters Journal website
Volume:
45
Issue:
8
Pages:
3420-3428
Publication date:
2018-04-16
Acceptance date:
2018-03-28
DOI:
EISSN:
1944-8007
ISSN:
0094-8276
Pubs id:
pubs:843421
URN:
uri:a04cbd57-a5ae-46be-9325-517f1582ea81
UUID:
uuid:a04cbd57-a5ae-46be-9325-517f1582ea81
Local pid:
pubs:843421
Keywords:

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