Mapping three-dimensional surface deformation by combining multiple aperture interferometry and conventional interferometry: application to the June 2007 eruption at the Kilauea volcano, Hawaii
Abstract
Surface deformation caused by an intrusion and small eruption during June 17-19, 2007 along the east rift zone of Kilauea Volcano, Hawaii, was three-dimensionally reconstructed from radar interferograms acquired by the ALOS PALSAR instrument. To retrieve the three-dimensional (3D) surface deformation, a method that combines multiple aperture interferometry (MAI) and conventional interferometric synthetic aperture radar (InSAR) techniques was applied to one ascending and one descending ALOS PALSAR interferometric pair. The radar-measured 3D surface deformation agrees with GPS data from 24 sites on the volcano, and the root mean square errors in east, north and up components of displacement are 1.8, 5.8 and 3.4 cm, respectively. 3D deformation reconstruction through the combination of conventional InSAR and MAI will allow for better modeling, and hence a more comprehensive understanding, of the source geometry associated with volcanic, seismic, and other processes that are manifested by surface deformation.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2010
- Bibcode:
- 2010AGUFM.G23C0832L
- Keywords:
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- 8485 VOLCANOLOGY / Remote sensing of volcanoes