On Friday, 06 November 2015 from 8:00 a.m. to 5:00 p.m. (USA Mountain Time), our FTP services, which also includes automated data requests from services such as Polaris and the GLAS Subsetter, will be unavailable because of system maintenance. We apologize for any inconvenience this may cause you.
Figure 5. Diagram of surface elevation, ice thickness, and bed elevation. Bedrock elevation
is computed as the difference of DEM surface elevation and ice thickness values. For example,
if the surface elevation (a) is 400 m above sea level, and ice thickness (b) is 100 m,
the bedrock elevation (c) is 300 m above sea level (c = a - b).