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

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-s...

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Bibliographic Details
Main Authors: Milillo, Pietro, Minchew, Brent, Agram, Piyush, Riel, Bryan, Simons, Mark
Other Authors: Notarnicola, Claudia, Paloscia, Simonetta, Pierdicca, Nazzareno, Mitchard, Edward
Format: Book Part
Language:English
Published: Society of Photo-Optical Instrumentation Engineers 2016
Subjects:
Rutford
Rutford Ice Stream
West Antarctica
Antarc*
Antarctica
Online Access:https://authors.library.caltech.edu/75197/
https://authors.library.caltech.edu/75197/1/1000309.pdf
https://resolver.caltech.edu/CaltechAUTHORS:20170317-084759208
Description
Summary: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.

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