Mountain fault in the eastern California shear zon

Amelung

Bennett

Berardino

Biehler

Biggs

Burchfiel

Burgmann

Casu

Davis

Dixon

Dokka

Falk Amelung

Feng

Ferretti

Fialko

Gabriel

Goldstein

Gourmelen

Hanssen

Hodges

Hooper

Johnson

Kohlhase

Kreemer

Lanari

Massonnet

McClusky

Meade

Noel Gourmelen

Oswald

Peltzer

Pepe

Pollitz

Riccardo Lanari

Rosen

Savage

Scharroo

Schmalzle

Sibson

Sternloff

Thatcher

Walter

Weertman

Wernicke

Wesnousky

Wicks

Wright

Zhang

The principal limitations of interferometric synthetic aperture radar (InSAR) to measure subtle, long-wavelength deformation are uncertainties associated with the satellite orbits. We propose a method to remove orbital phase errors from the InSAR data by integrating InSAR and continuous GPS time series. We model the along-track variation of the baseline errors as second-order polynomials and estimate the coefficients using the continuous GPS measurements. We apply this method to a 600 km long region encompassing the Basin and Range and the eastern California shear zone. Comparison of the corrected InSAR velocities with independent GPS data shows that this method removes the long-wavelength InSAR errors. The InSAR data reveal a region of sharp variation in the line-of-sight velocity across the Hunter Mountain fault. We model the deformation as interseismic elastic strain accumulation across a strike-slip fault. The modeling suggests a fault slip rate of 4.9 +/- 0.8 mm/yr and a locking depth of 2 +/- 0.4 km. The shallow locking depth suggests that the Hunter Mountain fault is a transfer fault between low angle normal faults in the area.</p

Gourmelen, Noel

Amelung, Falk

Lanari, Riccardo

Edinburgh Research Explorer

Interferometric synthetic aperture radar-GPS integration: Interseismic strain accumulation across the Hunter Mountain fault in the eastern California shear zone

English

Crossref

Journal of Geophysical Research Atmospheres

Interferometric synthetic aperture radar–GPS integration: Interseismic strain accumulation across the Hunter Mountain fault in the eastern California shear zone

CiteSeerX

Interferometric synthetic aperture radar– GPS integration: interseismic strain accumulation across the Hunter Mountain fault in the eastern California shear

The principal limitations of interferometric synthetic aperture radar (InSAR) to measure subtle, long‐wavelength deformation are uncertainties associated with the satellite orbits. We propose a method to remove orbital phase errors from the InSAR data by integrating InSAR and continuous GPS time series. We model the along‐track variation of the baseline errors as second‐order polynomials and estimate the coefficients using the continuous GPS measurements. We apply this method to a 600 km long region encompassing the Basin and Range and the eastern California shear zone. Comparison of the corrected InSAR velocities with independent GPS data shows that this method removes the long‐wavelength InSAR errors. The InSAR data reveal a region of sharp variation in the line‐of‐sight velocity across the Hunter Mountain fault. We model the deformation as interseismic elastic strain accumulation across a strike‐slip fault. The modeling suggests a fault slip rate of 4.9 ± 0.8 mm/yr and a locking depth of 2 ± 0.4 km. The shallow locking depth suggests that the Hunter Mountain fault is a transfer fault between low angle normal faults in the area

Interferometric synthetic aperture radar-GPS integration: Interseismic strain accumulation across the Hunter Mountain fault in the eastern California shear zone

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