Toward mapping surface deformation in three dimensions using InSAR

Details Toward mapping surface deformation in three dimensions using InSAR Toward mapping surface deformation in three dimensions using InSAR

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.

Affiliated with

Also associated with

No associations

Rating

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.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1550684