Tech

October 24, 2012

NASA C-20A completes radar study of Pacific rim volcanoes

NASA’s modified Airborne Science C-20A is seen on the parking ramp at Yokota Air Force Base near Tokyo, Japan. The aircraft, carrying the UAVSAR mounted in an undercarriage pod, was deployed to conduct a radar imaging mission of Japan’s active volcanoes.

NASA’s Airborne Science C-20A aircraft, carrying a specialized synthetic aperture radar, recently completed a mission to study active volcanoes in Alaska, Aleutian Islands and Japan in early October.

The aircraft, a modified version of the Gulfstream III business jet, made 10 flights totaling more than 50 hours during the eight-day campaign. The Uninhabited Aerial Vehicle Synthetic Aperture Radar, developed and operated by NASA’s Jet Propulsion Laboratory, collected 60 of 61 planned data lines.

AVSAR provides a measurement system that complements satellite-based observations by providing rapid revisits and imaging of active volcanoes to better understand their deformation prior to, during or after an eruption.

The flight path took the aircraft north from California, imaging the volcanoes of the Western United States, en route to an overnight stay at Joint Base Elmendorf-Richardson near Anchorage, Alaska.

After departing Elmendorf, the NASA aircraft imaged volcanoes in Alaska and the Aleutian Islands before arriving at Yokota Air Base near Tokyo, Japan. Yokota was the staging location for science missions that collected data about volcanoes on several islands in Japan that pose a hazard to nearby populations.

NASA’s Airborne Science C-20A made a refueling stop at Eareckson Air Station on Shemya Island, Alaska, during a mission to image volcanoes in Alaska and the Aleutian Islands. The aircraft crew and mission scientists, led by NASA Dryden C-20A project manager John McGrath (kneeling at left), paused for a group photo by the air station sign before boarding the aircraft and continuing onto Japan for UAVSAR imaging of active volcanoes.

Working closely with the Japan Aerospace Exploration Agency, three volcano-imaging flights were flown from Yokota over various volcano and disaster monitoring sites throughout Japan between Oct. 5 and 8. The aircraft repeated the outbound routing during the return flights to its home base at the Dryden Aircraft Operations Facility in Palmdale, Calif.

John McGrath, C-20A project manager at NASA Dryden, said a mission of this complexity faced numerous challenges.

“Preparation has been ongoing since May,” McGrath commented. “We had tremendous support from both Elmendorf and Yokota air bases and our colleagues at JAXA.”




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