Wang, H, Wright, TJ orcid.org/0000-0001-8338-5935, Liu-Zeng, J et al. (1 more author) (2019) Strain Rate Distribution in South‐Central Tibet From Two Decades of InSAR and GPS. Geophysical Research Letters, 46 (10). pp. 5170-5179. ISSN 0094-8276
Abstract
The degree to which deformation and seismicity is focused on major mapped structures remains a key unknown in assessing seismic hazards and testing continental deformation models. Here we combine 208 Global Positioning System (GPS) velocities with 12‐track Interferometric Synthetic Aperture Radar (InSAR) rate maps to form high‐resolution velocity and strain rate fields for south‐central Tibet. Our results show that deformation is not evenly distributed across the region. We find a few zones with high strain rates, most notably the Yutian‐Zhongba strain rate zone. However, the average of the strain rates is similar within and outside the mapped fault zones. In addition, the slip rates are low on all the conjugate strike‐slip faults widespread in central Tibet. The observations are difficult to reconcile with time‐invariant block models or with continuum models that lack mechanisms for strain localization. Our results support arguments that the most robust estimates of seismic hazard should integrate seismicity catalogues, active fault maps, and geodetic strain rate models.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2019. American Geophysical Union. This is the publishers version of the following article: Wang, H., Wright, T. J., Liu‐Zeng, J., & Peng, L. ( 2019). Strain rate distribution in south‐central Tibet from two decades of InSAR and GPS. Geophysical Research Letters, 46, 5170– 5179. , which has been published in final form at https://doi.org/10.1029/2019GL081916. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst of Geophysics and Tectonics (IGT) (Leeds) |
Funding Information: | Funder Grant number NERC No External Reference NERC NE/K010867/1 Royal Society No External Ref |
Depositing User: | Symplectic Publications |
Date Deposited: | 30 Apr 2019 16:35 |
Last Modified: | 01 Nov 2019 01:39 |
Status: | Published |
Publisher: | American Geophysical Union |
Identification Number: | 10.1029/2019GL081916 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:145429 |