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Dome growth at Mount Cleveland, Aleutian Arc, quantified by time-series TerraSAR-X imagery

February 1, 2016

Synthetic aperture radar imagery is widely used to study surface deformation induced by volcanic activity; however, it is rarely applied to quantify the evolution of lava domes, which is important for understanding hazards and magmatic system characteristics. We studied dome formation associated with eruptive activity at Mount Cleveland, Aleutian Volcanic Arc, in 2011–2012 using TerraSAR-X imagery. Interferometry and offset tracking show no consistent deformation and only motion of the crater rim, suggesting that ascending magma may pass through a preexisting conduit system without causing appreciable surface deformation. Amplitude imagery has proven useful for quantifying rates of vertical and areal growth of the lava dome within the crater from formation to removal by explosive activity to rebirth. We expect that this approach can be applied at other volcanoes that host growing lava domes and where hazards are highly dependent on dome geometry and growth rates.

Citation Information

Publication Year 2016
Title Dome growth at Mount Cleveland, Aleutian Arc, quantified by time-series TerraSAR-X imagery
DOI 10.1002/2015GL066784
Authors Teng Wang, Michael P. Poland, Zhong Lu
Publication Type Article
Publication Subtype Journal Article
Series Title Geophysical Research Letters
Index ID 70164311
Record Source USGS Publications Warehouse
USGS Organization Volcano Science Center