Hart Glacier (Greenland)

Hart Glacier (Danish: Hart Gletscher), is a glacier in northwestern Greenland.[2] Administratively it belongs to the Avannaata municipality.

This article is about the glacier in NW Greenland. For the glacier in Antarctica, see Hart Glacier.
Hart Glacier
Hart Gletscher
Location within Greenland
TypeTidal outlet glacier
LocationGreenland
Coordinates77°41′N 67°9′W
Width2 km (1.2 mi)
TerminusInglefield Fjord
Baffin Bay
StatusRetreating[1]

This glacier was named by Robert Peary after Gavin W. Hart (1848 – 1909), permanent Councillor and member of the Finance committee of the Philadelphia Academy of Natural Sciences, who helped Peary raise funds for his expeditions.[3]

Geography

The Hart Glacier discharges from the Greenland Ice Sheet and has its terminus in the northern side of the head of the Inglefield Fjord, northwest of Josephine Peary Island. Its last stretch lies between Prudhoe Land in the west and Mount Endicott, a nunatak that separates it from the Sharp Glacier to the east.[2]

The Hart Glacier flows roughly from NW to SE. In the same manner as its neighboring glaciers, it has retreated by approximately 1 km (0.62 mi) in the period between the 1980s and 2014.[1]

Map of Northwestern Greenland
19th century map of the Inglefield Gulf.
gollark: They do have to spin pretty fast. There are sealed helium ones now.
gollark: > The HDD's spindle system relies on air density inside the disk enclosure to support the heads at their proper flying height while the disk rotates. HDDs require a certain range of air densities to operate properly. The connection to the external environment and density occurs through a small hole in the enclosure (about 0.5 mm in breadth), usually with a filter on the inside (the breather filter).[124] If the air density is too low, then there is not enough lift for the flying head, so the head gets too close to the disk, and there is a risk of head crashes and data loss. Specially manufactured sealed and pressurized disks are needed for reliable high-altitude operation, above about 3,000 m (9,800 ft).[125] Modern disks include temperature sensors and adjust their operation to the operating environment. Breather holes can be seen on all disk drives – they usually have a sticker next to them, warning the user not to cover the holes. The air inside the operating drive is constantly moving too, being swept in motion by friction with the spinning platters. This air passes through an internal recirculation (or "recirc") filter to remove any leftover contaminants from manufacture, any particles or chemicals that may have somehow entered the enclosure, and any particles or outgassing generated internally in normal operation. Very high humidity present for extended periods of time can corrode the heads and platters. https://en.wikipedia.org/wiki/Hard_disk_drive#Integrity
gollark: Interweb says it's to keep pressure equalized between the inside and out.
gollark: Ah yes, destroy it as an example to the others.
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See also

References
  1. The recent regimen of the ice cap margin in North Greenland
  2. "Hart Gletscher". Mapcarta. Retrieved 3 April 2019.
  3. Robert Neff Keely, Gwilym George Davis, In Arctic Seas: the Voyage of the Kite with the Peary Expedition, 2011 p. 373
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