Scientists Have Mapped the Ground Beneath Antarctica’s Most Vulnerable Glacier for the First Time — For the first time, a team |
geography department. The findings have resulted in a new map of the geology of the region, produced by the BAS researchers and published in the journalA detailed geological map of under Thwaites Glacier shows the surprisingly low areas of thick sediments and the long strips of rift-related intrusions. Credit: Tom Jordan/British Antarctic Survey
The Thwaites glacier’s grounding zone — the point where it meets the seafloor — has retreated 14 km since the late 1990s. Much of the ice sheet is below sea level and susceptible to rapid, irreversible ice loss that could raise the global sea level by over half a meter within centuries. The researchers then use these multiple data sources to compile a 3D picture of features, including the type and extent of different rocks.
Professor Tom Jordan added: “We hope that by showing the detailed geology, and how it correlates with the basal friction, future models of glacial retreat will have lower uncertainty, as the controls of the basal processes will be better understood.
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