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InSAR observations of deformation associated with new episodes of volcanism at Kilauea Volcano, Hawai'i, 2007

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Abstract

In June 2007, the Pu'u 'O??'o??-Kupaianaha eruption of Ki??lauea Volcano was interrupted when magma intruded the east rift zone (ERZ), resulting in a small extrusion of lava near Makaopuhi Crater. Deformation associated with the activity was exceptionally well-documented by ASAR interferometry, which indicates deflation of the summit and uplift and extension of the ERZ. Models of co-intrusion interferograms suggest that the dike was emplaced in two distinct segments. The modeled volume of the dike greatly exceeds that of the deflation source, raising the possibility that magma from the downrift Pu'u 'O??'o?? vent (dominant extrusion site at Ki??lauea since 1983) contributed to the eruption near Makaopuhi, or that the magma that fed the eruption from the summit was compressible. A month following the Makaopuhi eruption, an eruptive fissure opened on the east flank of Pu'u 'O??'o??. Interferograms, processed within 48 hours of the event, were critical in demonstrating that the magma source feeding the eruption was shallow. The eruption probably resulted from overpressure in Pu'u 'O??'o??'s magmatic system.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
InSAR observations of deformation associated with new episodes of volcanism at Kilauea Volcano, Hawai'i, 2007
Issue:
649 SP
Year Published:
2008
Language:
English
Number of Pages:
7
Conference Title:
Fringe 2007 Workshop
Conference Location:
Frascati
Conference Date:
26 November 2007 through 30 November 2007