The January 2002 eruption of Nyiragongo volcano (DRC) captured by INSAR

C. Wauthier, V. Cayol, F. Kervyn, N. D'Oreye

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

3 Scopus citations

Abstract

On 17th January 2002, Nyiragongo erupted along an approximately 20 km long fracture network extending from the volcano to the city of Goma and its airport. The event was captured by InSAR data from the ERS-2 and RADARSAT-1 satellites acquired in three different geometries. These data show complex ground displacements, with several overlapping fringe patterns, associated to a combination of sources of magmatic and tectonics origins. A combination of 3D numerical modeling and inversions is used in order to interpret these displacements. Synthetic tests indicate that with one to three INSAR geometries, the best fit and mean models are within the confidence intervals whether the source of displacements is a single dike, a dike combined with a west dipping normal fault or a dike combined with an ellipsoid. Increasing the number of InSAR geometries makes the confidence intervals smaller and the inversions faster. At this stage of the study, only the area close to the eruptive fissures was analyzed assuming displacements were caused by a single dike. The best-fit dike model obtained with a simultaneous inversion of the three InSAR geometries is subvertical, and has a low overpressure. Both characteristics are consistent with the rift context.

Original languageEnglish (US)
Title of host publication2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009 - Proceedings
PagesII416-II419
DOIs
StatePublished - Dec 1 2009
Event2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009 - Cape Town, South Africa
Duration: Jul 12 2009Jul 17 2009

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume2

Other

Other2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009
CountrySouth Africa
CityCape Town
Period7/12/097/17/09

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'The January 2002 eruption of Nyiragongo volcano (DRC) captured by INSAR'. Together they form a unique fingerprint.

  • Cite this

    Wauthier, C., Cayol, V., Kervyn, F., & D'Oreye, N. (2009). The January 2002 eruption of Nyiragongo volcano (DRC) captured by INSAR. In 2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009 - Proceedings (pp. II416-II419). [5418103] (International Geoscience and Remote Sensing Symposium (IGARSS); Vol. 2). https://doi.org/10.1109/IGARSS.2009.5418103