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3D velocity field time series using synthetic aperture radar: application to tidal-timescale ice-flow variability in Rutford Ice Stream, West Antarctica

Milillo, Pietro and Minchew, Brent and Agram, Piyush and Riel, Bryan and Simons, Mark (2016) 3D velocity field time series using synthetic aperture radar: application to tidal-timescale ice-flow variability in Rutford Ice Stream, West Antarctica. In: SAR Image Analysis, Modeling, and Techniques XVI. Proceedings of SPIE. No.10003. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 1000309. ISBN 9781510604100. http://resolver.caltech.edu/CaltechAUTHORS:20170317-084759208

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Abstract

We present a general method for retrieving time-series of three component surface velocity field vector given a set of continuous synthetic aperture radar (SAR) acquisitions collected from multiple geometries. Our algorithm extends the single-line-of-sight mathematical framework developed for time-series analysis using interferometric SAR (InSAR) to three spatial dimensions. The inversion is driven by a design matrix corresponding to a dictionary of displacement functions parameterized in time. The resulting model minimizes a cost function using a non-regularized least-squares method. We applied our method to Rutford ice stream (RIS), West Antarctica, using a set of 101 multi-track multi-angle COSMO-SkyMed displacement maps generating azimuth and range pixel offsets.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1117/12.2241617DOIArticle
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2578881PublisherArticle
ORCID:
AuthorORCID
Milillo, Pietro0000-0002-1171-3976
Riel, Bryan0000-0003-1940-3910
Simons, Mark0000-0003-1412-6395
Additional Information:© 2016 SPIE. We benefitted from conversations with H. Gudmundsson, P. Lundgren and H. Martens. We used the original COSMOSkyMed product (copyright ASI -Agenzia Spaziale Italiana, 2013–2016). COSMO-SkyMed data products are processed at JPL under license from ASI as part of a collaborative project between CIDOT and JPL/Caltech. We acknowledge the Advanced Rapid Imaging Analysis system (ARIA) for data organization. The work of P. Milillo was done while he was a visiting student researcher at Caltech and partially sponsored by the National Aeronautics and Space Administration Postdoctoral Program. B. Minchew was partially funded by NASA Cyospheric Sciences award NNX14AH80G, NSF Earth Sciences Postdoctoral Fellowship award 1452587, and donations from the Albert Parvin and ARCS LA Chapter foundations. B. Riel was partially funded by a NASA Earth and Space Sciences fellowship.
Group:Seismological Laboratory
Funders:
Funding AgencyGrant Number
NASA Postdoctoral ProgramUNSPECIFIED
NASANNX14AH80G
NSFEAR-1452587
Albert Parvin FoundationUNSPECIFIED
ARCS Los Angeles ChapterUNSPECIFIED
NASA Earth and Space Science FellowshipUNSPECIFIED
Record Number:CaltechAUTHORS:20170317-084759208
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20170317-084759208
Official Citation:Pietro Milillo ; Brent Minchew ; Piyush Agram ; Bryan Riel ; Mark Simons; 3D velocity field time series using synthetic aperture radar: application to tidal-timescale ice-flow variability in Rutford Ice Stream, West Antarctica. Proc. SPIE 10003, SAR Image Analysis, Modeling, and Techniques XVI, 1000309 (October 28, 2016); doi:10.1117/12.2241617
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75197
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:24 Mar 2017 14:39
Last Modified:24 Mar 2017 14:39

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