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ARTICLE IN PRESS Deflation of the Askja volcanic system: Constraints on the
 

Summary: ARTICLE IN PRESS
Deflation of the Askja volcanic system: Constraints on the
deformation source from combined inversion of satellite
radar interferograms and GPS measurements
Carolina Pagli a,*, Freysteinn Sigmundsson a
, ThoŽra AŽ rnadoŽttir a
,
PaŽll Einarsson b
, Erik Sturkell c,1
a
Nordic Volcanological Center, Institute of Earth Sciences, University of Iceland, ReykjaviŽk, Iceland
b
Institute of Earth Sciences, University of Iceland, ReykjaviŽk, Iceland
c
Icelandic Meteorological Office, ReykjaviŽk, Iceland
Received 6 December 2004; received in revised form 18 July 2005; accepted 23 September 2005
Abstract
The Askja central volcano in northern Iceland has been continuously subsiding at least since 1983. GPS and optical leveling tilt
measurements show subsidence of at least 75 cm from 1983 to 1998 in the center of the Askja caldera, without any eruptive
activity. We have performed an interferometric analysis of Synthetic Aperture Radar images (InSAR) of the area, utilizing data

  

Source: Árnadóttir, Țóra - Nordic Volcanological Center, Institute for Earth Science, University of Iceland

 

Collections: Geosciences