Investigating the dynamics of basaltic volcano magmatic systems with space geodesy

of a dissertation at the University of Miami. Dissertation supervised by Professor Falk Amelung. No. of pages in text. (161) Many discoveries have been made about the dynamics of active volcanoes around the world. Studies of the physical and chemical processes have lead to a better understanding of magma generation, evolution, and collection within the crust. The purpose of this research is to use space geodetic techniques to generate time series of surface displacements to study and monitor active volcanoes. Interferometric synthetic aperture radar (InSAR) and global positioning system (GPS) data provide a way to measure the displacement associated with the migration and storage of magma within a volcano at unprecedented spatial and temporal resolutions. With these data, we can determine changes in the rate of surface displacement at volcanoes, which can be an indicator for eruptive activity. Using Kilauea Volcano, Hawaii and the Galapagos Islands volcanoes as natural laboratories, this study uses InSAR time series along with GPS and seismic data to elucidate the details about the shallow magmatic systems and track the movement and storage of magma at these basaltic volcanoes.

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