Ash from Okmok's 2008 eruption covers the GPS antenna, as well as the hut and solar panels that make up station OKCE, located within Okmok's caldera.
Pressure changes or mass movements within restless volcanoes produce surface deformation that we can measure using geodetic techniques like GPS and InSAR. Volcanoes in Alaska display a wide variety of deformation signatures, some very subtle and others very large and obvious. We analyze and model GPS and InSAR data to better understand the sources of volcanic deformation and how they relate to other signs of volcanic unrest and eruption.
Group Contact: Jeff Freymueller