Antarctica Bedmap2 ...

• Main Author: Pope, Addy
• Format: Dataset
• Language: English
• Published: University of Edinburgh 2017
• Subjects: Antarctica; Elevation; Environment; Geo Scientific Information; Imagery/Base Maps/Earth Cover; Antarctic; The Antarctic; Antarc*; Ice Sheet
• Online Access: https://dx.doi.org/10.7488/ds/1916; https://datashare.ed.ac.uk/handle/10283/2566

Bedmap2 is a new suite of gridded products describing surface elevation, ice-thickness and the sea floor and subglacial bed elevation of the Antarctic south of 60◦ S. We derived these products using data from a variety of sources, including many substantial surveys completed since the original Bedmap compilation (Bedmap1) in 2001. In particular, the Bedmap2 ice thickness grid is made from 25 million measurements, over two orders of magnitude more than were used in Bedmap1. In most parts of Antarctica the subglacial landscape is visible in much greater detail than was previously available and the improved data coverage has in many areas revealed the full scale of mountain ranges, valleys, basins and troughs, only fragments of which were previously indicated in local surveys. The derived statistics for Bedmap2 show that the volume of ice contained in the Antarctic ice sheet (27 million km3) and its potential contribution to sea-level rise (58 m) are similar to those of Bedmap1, but the mean thickness of the ice ... : GeoTIFF ...