Physics
Scientific paper
Jan 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3101607w&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 1, CiteID L01607
Physics
28
Geodesy And Gravity: Space Geodetic Surveys, Geodesy And Gravity: Seismic Deformations (7205), Geodesy And Gravity: Instruments And Techniques, Radio Science: Remote Sensing
Scientific paper
One of the limitations of deformation measurements made with interferometric synthetic aperture radar (InSAR) is that an interferogram only measures one component of the surface deformation - in the satellite's line of sight. We investigate strategies for mapping surface deformation in three dimensions by using multiple interferograms, with different imaging geometries. Geometries for both current and future missions are evaluated, and their abilities to resolve the displacement vector are compared. The north component is always the most difficult to determine using data from near-polar orbiting satellites. However, a satellite with an inclination of about 60°/120° would enable all three components to be well resolved. We attempt to resolve the 3D displacements for the 23 October 2002 Nenana Mountain (Alaska) Earthquake. The north component's error is much larger than the signal, but proxies for eastward and vertical motion can be determined if the north component is assumed negligible. Inversions of hypothetical coseismic interferograms demonstrate that earthquake model parameters can be well recovered from two interferograms, acquired on ascending and descending tracks.
Lu Zhong
Parsons Barry E.
Wright Tim J.
No associations
LandOfFree
Toward mapping surface deformation in three dimensions using InSAR does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Toward mapping surface deformation in three dimensions using InSAR, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toward mapping surface deformation in three dimensions using InSAR will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1550684