The Elmore Ranch and Superstition Hills earthquakes of 24 November 1987: Introduction to the special issue

Hanks, Thomas C.; Allen, Christian B

doi:10.1785/bssa0790020231

Cited by 16 publications

(1 citation statement)

References 24 publications

(8 reference statements)

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“…Several earthquake sequences have involved ruptures on conjugate orthogonal strike‐slip faults (Figure 1): the 2012 Indian Ocean earthquake (Meng et al., 2012), the 2019 Ridgecrest sequence (Ross et al., 2019), the 1987 Superstitious Hills sequence (Hanks & Allen, 1989; Hudnut et al., 1989) and numerous others in Japan (Fukuyama, 2015; Thatcher & Hill, 1991). Orthogonal strike‐slip faulting is puzzling because it contradicts the conventional Coulomb faulting theory, which predicts that, for typical values of rock friction coefficient of 0.6–0.9 (Byerlee, 1978; Jaeger et al., 2009), crustal conjugate faults should intersect at an angle of 48–60° (at 24–30° from the maximum principal stress σ 1 ).…”

Section: Introductionmentioning

confidence: 99%

Deep Ductile Shear Zone Facilitates Near‐Orthogonal Strike‐Slip Faulting in a Thin Brittle Lithosphere

Liang

Ampuero

Muñoz

2021

Geophysical Research Letters

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Section: Introductionmentioning

confidence: 99%

Deep Ductile Shear Zone Facilitates Near‐Orthogonal Strike‐Slip Faulting in a Thin Brittle Lithosphere

Liang

Ampuero

Muñoz

2021

Geophysical Research Letters

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Geodetic investigation into the deformation of the Salton Trough

et al. 2013

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The Salton Trough represents a complex transition between the spreading center in Baja California and the strike‐slip San Andreas fault system and is one of the most active zones of deformation and seismicity in California. We present a high‐resolution interseismic velocity field for the Salton Trough derived from 74 continuous GPS sites and 109 benchmarks surveyed in three GPS campaigns during 2008–2009 and previous surveys between 2000 and 2005. We also investigate small‐scale deformation by removing the regional velocity field predicted by an elastic block model for Southern California from the observed velocities. We find a total extension rate of 11 mm/yr from the Mesquite Basin to the southern edge of the San Andreas Fault, coupled with 15 mm/yr of left‐lateral shear, the majority of which is concentrated in the southern Salton Sea and Obsidian Buttes and is equivalent to 17 mm/yr oriented in the direction of the San Andreas Fault. Differential shear strain is exclusively localized in the Brawley Seismic Zone, and dilatation rate indicates widespread extension throughout the zone. In addition, we infer clockwise rotation of 10°/Ma, consistent with northwestward propagation of the Brawley Seismic Zone over geologic time.

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Recent Plate Motions and Crustal Deformation

Lisowski

1991

Reviews of Geophysics

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The Elmore Ranch and Superstition Hills earthquakes of 24 November 1987: Introduction to the special issue

Cited by 16 publications

References 24 publications

Deep Ductile Shear Zone Facilitates Near‐Orthogonal Strike‐Slip Faulting in a Thin Brittle Lithosphere

Deep Ductile Shear Zone Facilitates Near‐Orthogonal Strike‐Slip Faulting in a Thin Brittle Lithosphere

Geodetic investigation into the deformation of the Salton Trough

Recent Plate Motions and Crustal Deformation

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