Long period interferograms reveal 1992-1998 steady rate of deformation at Krafla volcano (North Iceland)

Details Long period interferograms reveal 1992-1998 steady rate of deformation at Krafla volcano (North Iceland) Long period interferograms reveal 1992-1998 steady rate of deformation at Krafla volcano (North Iceland)

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.1067h&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 6, p. 1067-1070

Physics

5

Geodesy And Gravity: Crustal Movements-Interplate, Geodesy And Gravity: Space Geodetic Surveys, Radio Science: Interferometry, Volcanology

Scientific paper

We formed interferograms of ERS-SAR scenes covering the area of Krafla (N. Iceland) with time span values of up to six years (1992-1998). Our data reveals a steady deformation rate at Krafla and within its fissure swarm, with values reaching +2.1 cm/y in the ground to satellite direction, at the volcano. The area affected by deformation extends 20 km both north and south of the volcano. The best fit dislocation model consists of sills, to the north and south of the volcano, and a magma chamber, located below the volcano, all of them undergoing contraction.

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