SCEC Award Number 21151 View PDF
Proposal Category Collaborative Proposal (Data Gathering and Products)
Proposal Title NASA Collaborative Research: Development of a Consensus InSAR Community Geodetic Model from Sentinel-1
Investigator(s)
Name Organization
Ekaterina Tymofyeyeva National Aeronautics and Space Administration Kathryn Materna University of California, Berkeley
Other Participants David Sandwell
Xiaohua Xu
Zhen Liu
Kang Wang
Gareth Funning
Roland Burgmann
Katherine Guns
David Bekaert
Eric Fielding
Paul Lundgren
Mike Floyd

Others
SCEC Priorities 1a, 1b, 2a SCEC Groups CXM
Report Due Date 03/15/2022 Date Report Submitted 12/01/2022
Project Abstract
 The CGM InSAR focus group is a multi-institutional collaboration aiming to establish a
consensus deformation model from Sentinel-1. The goals of the project are twofold: to build a consensus
velocity and time series solution, and to research the impacts of various methodological choices on the
results. Groups from five institutions in this working group (JPL, SIO, UCB, USGS, UCR) have
organized themselves to produce consistent products that will ultimately be used together in the consensus
CGM, and have begun to address several basic research questions related to InSAR processing. The
results of this project will be valuable to the wider community as a deformation product. The InSAR
working group will also establish a better understanding of best practices and error corrections, which can
easily be adapted for use with data from the NISAR mission that has a similar temporal cadence to
Sentinel-1.
Intellectual Merit This project works towards developing community-vetted deformation products that can help improve our understanding of errors in geodetic data processing. This will also further the goal of creating a 3-D integrated velocity field from GNSS and InSAR in southern California.
Broader Impacts This project is directly leading to the generation of a single geodetic product that will improve reproducibility, transparency, and accessibility of InSAR data. Non-experts in InSAR will be able to use this open-access product for research and educational purposes.
Exemplary Figure Figure 1 from the attached report.
Caption: Summary of the spatial and temporal coverage of 4 Sentinel-1 tracks included in the CGM InSAR product for southern California.
Credit: K. Materna and the CGM InSAR working group