The IceBridge mission, a six-year NASA campaign, is the largest airborne survey of Earth's polar ice ever flown. It will yield never-before-seen 3-D images…Read More »
of Arctic and Antarctic ice. The flights provide a yearly, multi-perspective look at the behavior of the rapidly changing features of the Greenland and Antarctic Ice Sheets and the glaciers that run from them into the oceans.
On Oct. 17, the IceBridge DC-8, parked outside the hanger at NASA's Dryden Flight Research Center in Edwards, Calif., is prepared for an instrument test flight.
On Nov. 7, while waiting for a replacement plane part, Kyle Krabill, an engineer at NASA's Wallops Flight Facility made this topographic map of the…Read More »
runway the mission's DC-8 used. This type of map is called a "car survey" because it involves a three-hour journey criss-crossing the pavement at a maximum speed of 5 mph (8 kph). An elevation map like this is critical for calibrating IceBridge's airborne instruments.
Shane Wake and Bryan Blair LVIS engineer and principal investigator at NASA's Goddard Spaceflight Center in Maryland - take a look at the LVIS instrument…Read More »
read-out in their station near the rear of the DC-8. The LVIS (Land, Vegetation and Ice Sensor) takes measurements of surface height. A laser pulse is transmitted from the instrument and reflected back from the surface where the return pulse is recorded. Using those readings, scientists can calculate the height of the ice below.