ALOS-2 Time Series of Deformation Near the Mendocino Triple Junction
Session: Application of Remote Sensing and Space-Based Earth Observations Data in Earthquake Research [Poster]
Type: Poster
Date: 4/21/2021
Presentation Time: 11:30 AM Pacific
Description:
We seek to separate contributions from interseismic deformation associated with plate-boundary faults and those from potential geodynamic processes around the Mendocino Triple Junction. A velocity map of Northern California for the period 2015--2020 is generated using ALOS-2 ScanSAR data. Spatially heterogeneous ionosphere delays are estimated and removed using the range split-spectrum method of Liang et. al., (2018) as implemented in ISCE. Initial mean InSAR and GNSS velocities are compared to determine the agreement between the two.
The capacity to observe vertical crustal deformation with spatial patterns spanning 10-100’s km has been improved by the larger footprint of ALOS-2 ScanSAR frames, the extended data collection period, and the implementation of new ionosphere corrections. We investigate firstly if we can use InSAR to observe vertical deformation driven by geodynamic processes. And following, do the deformation patterns onshore from the Mendocino Triple Junction support those predicted from geodynamic processes.
Presenting Author: Danielle Lindsay
Student Presenter: Yes
Authors
Danielle Lindsay Presenting Author Corresponding Author danielle.lindsay@berkeley.edu University of California, Berkeley |
Roland Bürgmann burgmann@seismo.berkeley.edu University of California, Berkeley |
Kathryn Materna kmaterna@usgs.gov University of California, Berkeley |
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ALOS-2 Time Series of Deformation Near the Mendocino Triple Junction
Category
Application of Remote Sensing and Space-based Earth Observations Data in Earthquake Research