GPS-derived interseismic fault locking along the Jalisco–Colima segment of the Mexico subduction zone

High-resolution interseismic velocity data along the San Andreas Fault from GPS and InSAR

[1] We compared four interseismic velocity models of the San Andreas Fault based on GPS observations. The standard deviations of the predicted secular velocity from the four models are larger north of the San Francisco Bay area, near the creeping segment in Central California, and along the San Jacinto Fault and the East California Shear Zone in Southern California. A coherence spectrum analysi...

Rotation and plate locking at the southern Cascadia subduction zone

Global Positioning System vectors and surface tilt rates are inverted simultaneously for the rotation of western Oregon and plate locking on the southern Cascadia subduction thrust fault. Plate locking appears to be largely offshore, consistent with earlier studies, and is sufficient to allow occasional great earthquakes inferred from geology. Clockwise rotation of most of Oregon about a nearby...

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

[1] 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 an...

Interseismic coupling, segmentation and mechanical behavior of the Central Chile subduction zone

Slow earthquakes linked along dip in the Nankai subduction zone.

We identified a strong temporal correlation between three distinct types of slow earthquakes distributed over 100 kilometers along the dip of the subducting oceanic plate at the western margin of the Nankai megathrust rupture zone, southwest Japan. In 2003 and 2010, shallow very-low-frequency earthquakes near the Nankai trough as well as nonvolcanic tremor at depths of 30 to 40 kilometers were ...