InSAR Applied to Volcano Hazards

Volcano monitoring and eruption response is centered on local volcano observatories who are informed through their local networks of in situ instruments, especially seismometer and Global Navigation Satellite System (GNSS) geodetic time series. Interferometric synthetic aperture radar (InSAR) has an increasing role in volcano monitoring. Typically, this occurs with InSAR providing context during episodes of unrest and eruption, usually with a request by the local observatory to relevant scientists. Here we provide some examples of recent InSAR contributions to volcano unrest and eruption, mostly from satellite InSAR, but also with an example from single pass airborne interferometry for topography change during the 2018 Kilauea eruption. We will conclude by pointing towards future directions applying large scale processing combined with dynamical volcano modeling to aid system forecasting.