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Why the 2002 Denali fault rupture propagated onto the Totschunda fault: Implications for fault branching and seismic hazards

Dates

Year
2012

Citation

Schwartz, David P., Haeussler, Peter J., Seitz, Gordon G., and Dawson, Timothy E., 2012, Why the 2002 Denali fault rupture propagated onto the Totschunda fault: Implications for fault branching and seismic hazards: Journal of Geophysical Research: Solid Earth, v. 117, no. B11, p. n/a-n/a.

Summary

The propagation of the rupture of the Mw7.9 Denali fault earthquake from the central Denali fault onto the Totschunda fault has provided a basis for dynamic models of fault branching in which the angle of the regional or local prestress relative to the orientation of the main fault and branch plays a principal role in determining which fault branch is taken. GeoEarthScope LiDAR and paleoseismic data allow us to map the structure of the Denali-Totschunda fault intersection and evaluate controls of fault branching from a geological perspective. LiDAR data reveal the Denali-Totschunda fault intersection is structurally simple with the two faults directly connected. At the branch point, 227.2 km east of the 2002 epicenter, the 2002 rupture [...]

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  • Northwest Boreal Landscape Conservation Cooperative

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NWBLCC20160627

Additional Information

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Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1029/2011JB008918
ISSN http://sciencebase.gov/vocab/identifierScheme 2156-2202

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