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Long period interferograms reveal 1992–1998 steady rate of deformation at Krafla Volcano (North Iceland).
Author(s) -
Henriot Oliver,
Villemin Thierry,
Jouanne François
Publication year - 2001
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2000gl011712
Subject(s) - volcano , geology , sill , seismology , deformation (meteorology) , magma , magma chamber , geodesy , petrology , oceanography
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.