Imaging the Spatiotemporal Evolution of Plate Coupling With Interferometric Radar (InSAR) in the Hikurangi Subduction Zone
Name
Geophysical Research Letters - 2023 - Maubant - Imaging the Spatiotemporal Evolution of Plate Coupling With Interferometric.pdf
Description
Published version
Size
7.11 MB
Format
Adobe PDF
Checksum (MD5)
061d7b05cd8e4c37d0dc74e9350590d6
Author(s)
Maubant, L
Frank, WB
Wallace, LM
Williams, CA
Hamling, I
Date Issued
October 3, 2023
Journal
Geophysical Research Letters
Publisher
American Geophysical Union
Citation
Maubant, L., Frank, W. B., Wallace, L. M., Williams, C. A., & Hamling, I. (2023). Imaging the spatiotemporal evolution of plate coupling with interferometric radar (InSAR) in the Hikurangi subduction zone. Geophysical Research Letters, 50, e2023GL105388. https://doi.org/10.1029/2023GL105388
Version
Final published version
Abstract
The coupling at the interface between tectonic plates is a key geophysical parameter to capture the frictional locking across plate boundaries and provides a means to estimate where tectonic strain is accumulating through time. Here, we use both interferometric radar (InSAR) and Global Navigation Satellite System (GNSS) data to investigate the plate coupling of the Hikurangi subduction zone beneath the North Island of New Zealand, where multiple slow slip cycles are superimposed on the long‐term loading. We estimate the plate coupling across the subduction zone over three multi‐year observational periods targeting different stages of the slow slip cycle. Our results highlight the importance of the observational time period when interpreting coupling maps, emphasizing the temporal variability of plate coupling. Leveraging multiple geodetic data sets, we demonstrate how InSAR provides powerful constraints on the spatial resolution of both plate coupling and slow fault slip, even in a region where a dense GNSS network exists.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivatives
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DOI of Published Version
10.1029/2023gl105388
