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The floating ice shelf is in the left foreground, and the grounding line is visible as an abrupt change in surface slope due to flexure caused by the buoyancy force where the ice reaches flotation. An ice shelf is a large platform of glacial ice floating on the ocean, fed by one or multiple tributary glaciers.
Some demonstration kits include conductive ground sheets which are laid on the workbench under the apparatus, and antistatic wrist straps the experimenter wears during the experiment, which are connected to a good ground. The electrometer measures charge with respect to ground, so it requires a connection to ground during use. [13]
Radioglaciology is the study of glaciers, ice sheets, ice caps and icy moons using ice penetrating radar.It employs a geophysical method similar to ground-penetrating radar and typically operates at frequencies in the MF, HF, VHF and UHF portions of the radio spectrum.
Other labels refer to the ice tongue's grounding line, and northern and southern shear zones where it's in direct contact with the ice shelf. [ 29 ] The Thwaites Glacier Tongue, or Western Glacier Tongue ( 75°0′S 106°50′W / 75.000°S 106.833°W / -75.000; -106.833 ) was a narrow, floating part of the glacier, located about 30 ...
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The effect subglacial stream discharge has on glacial melt is also influenced by the type of subglacial drainage system; distributed subglacial streams result in an output of meltwater uniformly across the grounding line (where the glacier transitions from grounded to floating ice), whereas channelized drainage results in individual, large ...
These aggregates are usually the type of ice particle that falls to the ground. [ 8 ] Guinness World Records lists the world's largest aggregated snowflakes as those of January 1887 at Fort Keogh , Montana , which were claimed to be 15 inches (38 cm) wide—well outside the normally documented range of aggregated flakes of three or four inches ...
Retrogressive thaw slumps are slope failures due to abrupt thawing of ice-rich permafrost. [16] They have also been called ground-ice slumps, [17] thermocirques, [18] tundra mudflows, [19] retrogressive flow slides, [20] and bi-modal flows. [21] [13] These terms are no longer recommended by the National Snow and Ice Data Center (NSIDC). [21]