A continental rifting event in Tanzania revealed by ENVISAT and ALOS INSAR observations

A. M. Oyen, P. S. Marinkovic, Christelle Wauthier, N. D'Oreye, R. F. Hanssenl

Research output: Chapter in Book/Report/Conference proceedingConference contribution


From July to September 2007 a series of moderate earthquakes struck the area South of the Gelai volcano, located on the Eastern branch of the East African Rift (North Tanzania). Most deformation patterns detected by InSAR in these period are very complex, impeding proper interpretation. To decrease the complexity of the models of the deformation, this study proposes two strategies of combining data from different tracks and sensors. In a first stage a method is proposed to correct unwrapping errors in C-band using the much more coherent L-band data. Furthermore, a modeling optimization method is explored, which aims at the decomposition of the deformation in smaller temporal baselines, by means of creating new, artificial interferograms and the use of models. Due to the higher coherence level and fewer phase cycles in L-band, the deformation interpretation is facilitated but model residual interpretation has become more difficult compared to C-band.

Original languageEnglish (US)
Title of host publicationProceedings of the ALOS PI 2008 Symposium
StatePublished - Jun 17 2009
EventALOS PI 2008 Symposium - Island of Rhodes, Greece
Duration: Nov 3 2008Nov 7 2008

Publication series

NameEuropean Space Agency, (Special Publication) ESA SP
Volume664 SP
ISSN (Print)0379-6566


OtherALOS PI 2008 Symposium
CityIsland of Rhodes

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science


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