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Geodetic Imaging of Time-Dependent Three-Component Surface Deformation: Application to Tidal-Timescale Ice Flow of Rutford Ice Stream, West Antarctica

Milillo, Pietro and Minchew, Brent and Simons, Mark and Agram, Piyush and Riel, Bryan (2017) Geodetic Imaging of Time-Dependent Three-Component Surface Deformation: Application to Tidal-Timescale Ice Flow of Rutford Ice Stream, West Antarctica. IEEE Transactions on Geoscience and Remote Sensing, 55 (10). pp. 5515-5524. ISSN 0196-2892. https://resolver.caltech.edu/CaltechAUTHORS:20170705-164235369

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Abstract

We present a method for inferring time-dependent three-component surface deformation fields given a set of geodetic images of displacements collected from multiple viewing geometries. Displacements are parameterized in time with a dictionary of displacement functions. The algorithm extends an earlier single-component (i.e., single line of sight) framework for time-series analysis to three spatial dimensions using combinations of multitemporal, multigeometry interferometic synthetic aperture radar (InSAR) and/or pixel offset (PO) maps. We demonstrate this method with a set of 101 pairs of azimuth and range PO maps generated for a portion of the Rutford Ice Stream, West Antarctica, derived from data collected by the COSMO-SkyMed satellite constellation. We compare our results with previously published InSAR mean velocity fields and selected GPS time series and show that our resulting three-component surface displacements resolve both secular motion and tidal variability.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1109/TGRS.2017.2709783DOIArticle
http://ieeexplore.ieee.org/document/7962244/PublisherArticle
ORCID:
AuthorORCID
Milillo, Pietro0000-0002-1171-3976
Simons, Mark0000-0003-1412-6395
Riel, Bryan0000-0003-1940-3910
Additional Information:© 2017 IEEE. Manuscript received May 28, 2016; revised September 16, 2016, November 22, 2016, and May 3, 2017; accepted May 24, 2017. Date of publication June 29, 2017; date of current version September 25, 2017. The work of P. Milillo was supported by the National Aeronautics and Space Administration Postdoctoral Program. The work of B. Minchew was supported in part by NASA Cyospheric Sciences under Award NNX14AH80G, in part by National Science Foundation Earth Sciences Postdoctoral Fellowship under Award 1452587, and in part by Albert Parvin and ARCS LA Chapter Foundations. The work of B. Riel was supported by NASA Earth and Space Sciences Fellowship.
Funders:
Funding AgencyGrant Number
NASA Earth and Space Science FellowshipUNSPECIFIED
NASANNX14AH80G
NSF Postdoctoral FellowshipEAR- 452587
Albert Parvin FoundationUNSPECIFIED
ARCS FoundationUNSPECIFIED
Subject Keywords:3-D analysis, ocean tides, pixel offsets (POs), Rutford ice stream (RIS), synthetic aperture radar (SAR), time-series analysis
Issue or Number:10
Record Number:CaltechAUTHORS:20170705-164235369
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170705-164235369
Official Citation:P. Milillo, B. Minchew, M. Simons, P. Agram and B. Riel, "Geodetic Imaging of Time-Dependent Three-Component Surface Deformation: Application to Tidal-Timescale Ice Flow of Rutford Ice Stream, West Antarctica," in IEEE Transactions on Geoscience and Remote Sensing, vol. 55, no. 10, pp. 5515-5524, Oct. 2017. doi: 10.1109/TGRS.2017.2709783
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:78783
Collection:CaltechAUTHORS
Deposited By: Kristin Buxton
Deposited On:06 Jul 2017 21:26
Last Modified:03 Oct 2019 18:12

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