What question did this study set out to answer?

To determine the static crustal deformation, slip distribution, and rupture kinematics of the 2010 Mw 8.8 Maule earthquake using GPS monitoring networks.

April 29, 2011Science

The 2010 M w 8.8 Maule Megathrust Earthquake of Central Chile, Monitored by GPS

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Authors

CVC. VignyCentre National de la Recherche Scientifique ASAnne SocquetCentre National de la Recherche Scientifique SPS. PeyratCentre National de la Recherche Scientifique

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Implication

Geodetic analysis reveals bilateral rupture dynamics during the 2010 Maule megathrust earthquake, highlighting shallow fault slip propagating up to the ocean trench.

Key Points

To determine the static crustal deformation, slip distribution, and rupture kinematics of the 2010 Mw 8.8 Maule earthquake using GPS monitoring networks.
Analyzed continuous and survey-mode GPS data across Central Chile to measure coseismic surface displacements and post-seismic deformations.
Used elastic dislocation modeling to invert geodetic observations for fault slip distribution, hypocenter relocation, and rupture velocity.
Fault rupture extended approximately 500 km bilaterally at roughly 3.1 km/s, with maximum slip reaching up to 15 m concentrated in two distinct asperities flanking the epicenter.
Coseismic slip reached shallow depths up to the trench, the low-frequency hypocenter relocated 40 km southwest of initial estimates, and measurable afterslip localized in areas with low coseismic slip.

Cite This Study

Vigny et al. (2011) studied this question.

synapsesocial.com/papers/69d76d7fdb9d5e1bf4b8a65c https://doi.org/10.1126/science.1204132

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Implication

Geodetic analysis reveals bilateral rupture dynamics during the 2010 Maule megathrust earthquake, highlighting shallow fault slip propagating up to the ocean trench.

The 2010 M w 8.8 Maule Megathrust Earthquake of Central Chile, Monitored by GPS

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Implication

Key Points

Cite This Study

The 2010 M w 8.8 Maule Megathrust Earthquake of Central Chile, Monitored by GPS

Discussion

Member takes

Implication

Key Points

Cite This Study

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