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Rupture model of the 2011 Mineral, Virginia, earthquake from teleseismic and regional waveforms

Geophysical Research Letters

By:
, , and
DOI: 10.1002/2013GL057880

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Abstract

We independently invert teleseismic P waveforms and regional crustal phases to examine the finite fault slip model for the 2011 Mw5.8 Mineral, Virginia, earthquake. Theoretical and empirical Green's functions are used for the teleseismic and regional models, respectively. Both solutions show two distinct sources each about 2 km across and separated by 2.5 km. The source at the hypocenter is more localized in the regional model leading to a higher peak slip of 130 cm and higher average stress drop of 250 bars compared with 86 cm and 150 bars for the same source in the teleseismic model. Both sources are centered at approximately 8 km depth in the regional model, largely below the aftershock distribution. In the teleseismic model, the sources extend updip to approximately 6 km depth, into the depth range of the aftershocks. The rupture velocity is not well resolved but appears to be near 2.7 km/s.

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Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Rupture model of the 2011 Mineral, Virginia, earthquake from teleseismic and regional waveforms
Series title:
Geophysical Research Letters
DOI:
10.1002/2013GL057880
Volume
40
Issue:
21
Year Published:
2013
Language:
English
Publisher:
Wiley
Contributing office(s):
Geologic Hazards Science Center
Description:
6 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geophysical Research Letters
First page:
5665
Last page:
5670
Country:
United States