Physics
Scientific paper
Jul 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3113611d&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 13, CiteID L13611
Physics
19
Geodesy And Gravity: Space Geodetic Surveys, Tectonophysics: Physics Of Magma And Magma Bodies, Volcanology: Physics And Chemistry Of Magma Bodies
Scientific paper
Deep magma accumulation near the crust-mantle boundary (21 km depth) at the Krafla volcanic system is suggested from InSAR observations. A best fit model, derived from four interferograms covering 1993-1999, comprises an opening dike, representing plate spreading and post-rifting deformation, and two Mogi sources. A Mogi source deflating at a rate of ~0.3 × 106 m3/yr coincides with the shallow Krafla magma chamber while a deeper inflating Mogi source, further north, at 21 km depth, inflates at a rate of ~26 × 106 m3/yr. The inflating source is at or near the crust-mantle boundary as identified by seismic studies and is interpreted as accumulating magma.
de Zeeuw-van Dalfsen Elske
Pagli Carolina
Pedersen Rikke
Sigmundsson Freysteinn
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