Ice Sheet Dynamics
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In addition to global navigation satellite system (GNSS) surveys and ice-flow modeling, scientists use radar to locate drill sites, such as the Hercules Dome near the Thiel Mountains, shown in Figure 10.13. The best locations for drilling are at ice divides because researchers can avoid disturbances associated with horizontal ice movement. Like a drainage divide, this is where the ice flows in opposite directions, as shown in Figure 10.19.
Figure 10.19 Schematic sketch of ice sheet dynamics and choice of a proper location on an ice dome or ice sheet divide to obtain a deep, undisturbed ice core. (DeWikiMan, 2019. CC BY-SA. 4.0).
Source: DeWikiMan, https://commons.wikimedia.org/wiki/File:Ice_sheet_divide_and_ice_coring_location-en.svg
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