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Earth Surface & Interior

Surface deformation measurements represent one of the key types of measurements for understanding volcanic processes and hazard. Synthetic aperture radar (SAR) interferometry (InSAR) from is an important technique for measuring volcano-wide deformation at ~100m spatial resolution with centimeter-level accuracy, but with relatively long (35-46 day) repeat intervals. UAVSAR provides a measurement system that complements satellite-based observations by providing frequent revisits. We propose to apply UAVSAR to volcanoes in the United States that span a range of volcano types and levels of activity. We will compare UAVSAR InSAR observations with satellite based InSAR from Envisat, ALOS, and Radarsat to assess the applicability of UAVSAR to each volcano. We seek to address a number of fundamental questions with regard to UAVSAR applied to volcanoes:

How do UAVSAR and satellite InSAR observations compare?

What is the improvement in UAVSAR deformation resolution with rapid repeat observations?

How well does UAVSAR perform during a dynamically evolving volcanic event?

To answer these questions we require a mix of frequent measurements over a period of time and repeat measurements that cover the entire three-year length of the project. We will apply standard numerical models to understand the volcano source processes. This proposed research benefits NASA through the demonstration of UAVSAR a primary area for UAVSAR application: volcanoes. By targeting a range of volcanic activity and processes, comparing the UAVSAR observations with those from satellite based SAR, obtaining high-rate repeat observations, and through numerical modeling of the volcano sources we will improve the evaluation of UAVSAR’s performance and applicability to study volcano processes and hazard mitigation. This proposal will support NASA’s goal of strengthening the role of remote sensing in the determination of crustal dynamics and the goals of the Earthscope Program for studying magmatic processes and natural hazards.

Project PI: Paul Lundgren/Jet Propulsion Laboratory

Jet Propulsion Laboratory M/S 300-233 4800 Oak Grove Drive Pasadena, CA 91110

Phone: 818.354.1796

Fax: 818.354.9477

Email: paul.lundgren@jpl.nasa.gov

http://science.jpl.nasa.gov/people/Lundgren/

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Started: Aug 09, 2010

Last Activity: Dec 09, 2010

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