Skip to main content
U.S. flag

An official website of the United States government

Methods of InSAR atmosphere correction for volcano activity monitoring

January 1, 2011

When a Synthetic Aperture Radar (SAR) signal propagates through the atmosphere on its path to and from the sensor, it is inevitably affected by atmospheric effects. In particular, the applicability and accuracy of Interferometric SAR (InSAR) techniques for volcano monitoring is limited by atmospheric path delays. Therefore, atmospheric correction of interferograms is required to improve the performance of InSAR for detecting volcanic activity, especially in order to advance its ability to detect subtle pre-eruptive changes in deformation dynamics. In this paper, we focus on InSAR tropospheric mitigation methods and their performance in volcano deformation monitoring. Our study areas include Okmok volcano and Unimak Island located in the eastern Aleutians, AK. We explore two methods to mitigate atmospheric artifacts, namely the numerical weather model simulation and the atmospheric filtering using Persistent Scatterer processing. We investigate the capability of the proposed methods, and investigate their limitations and advantages when applied to determine volcanic processes. ?? 2011 IEEE.

Publication Year 2011
Title Methods of InSAR atmosphere correction for volcano activity monitoring
DOI 10.1109/IGARSS.2011.6049550
Authors W. Gong, F. Meyer, P.W. Webley, Z. Lu
Publication Type Conference Paper
Publication Subtype Conference Paper
Index ID 70032610
Record Source USGS Publications Warehouse