On Friday, 07 April 2017 from 1:00 p.m. to 2:00 p.m. (USA Mountain Time), we will be performing scheduled maintenance, which may cause temporary disruptions to our Web site, applications, HTTPS, and FTP. We apologize for any inconvenience this may cause you. Need to talk to us? You can always contact our friendly User Services Office at firstname.lastname@example.org or + 1 303.492.6199.
Full NSF Report
Authors and Credits
Contour and mesh surface map of Siple Dome between Ice Streams C and D in West Antarctica
The contours in the upper panel represent the surface topography of a 10 Km square region centered on the summit (see our satellite image). The lower mesh surface is bedrock topography as determined from surface-based ice-penetrating radar measurements. Between these is a mesh surface depiction of one of the more prominent internal layers produced by radar reflections from (probably volcanic) debris. This layer is interesting because it depicts the strain field within the ice, and it thus contains information about both the accumulation history in the area as well as ice dynamics.