The Island of Hawaii
C-band InSAR time series displacement map (top) and InSAR and GPS time series (bottom).
The Hawaiian Islands are home to some of the most active volcanoes in the world resulting in a constant state of deformation. Mauna Loa and Kilauea volcanoes on the Island of Hawaii, or the Big Island, are of particular interest. Kilauea has been erupting continuously since 1983 and Manua Loa has erupted 53 times in last 150 years, the last occurring in 1984. Using InSAR and GPS, it is possible to monitor the surface deformation of the volcanoes through time and analyze the spatial and temporal defomation patterns to better understand the magmatic systems within the volcanoes.
InSAR and GPS measurements of the inflation activity at Kilauea's summit provided a way to track the location of the inflation sources. During the period from 2000 - 2008, four different sources were identified that showed both inflation and deflation during this time.
SBAS and GPS Maps
Radarsat1 D1 Rate Map of Kilauea with SBAS and GPS Time Series