Jacka Glacier () is a long
glacier
A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as ...
which flows northeast from
Hayter Peak and terminates in
icefall
An icefall is a portion of certain glaciers characterized by relatively rapid flow and chaotic crevassed surface, caused in part by gravity. The term ''icefall'' is formed by analogy with the word ''waterfall'', which is a similar phenomenon of ...
s opposite
Vanhoffen Bluff on the north side of
Heard Island
The Territory of Heard Island and McDonald Islands (HIMI) is an Australian external territory comprising a volcanic group of mostly barren Antarctic islands, about two-thirds of the way from Madagascar to Antarctica. The group's overall size ...
in the southern
Indian Ocean
The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by t ...
. The glacier appears to be roughly charted on an 1860 sketch map compiled by Captain
H.C. Chester, an American sealer operating in the area during this period. It was surveyed in 1948 by the
Australian National Antarctic Research Expeditions, and named by them for
Fred J. Jacka, an expedition physicist.
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]
See also
* List of glaciers in the Antarctic
* Glaciology
Glaciology (; ) is the scientific study of glaciers, or more generally ice and natural phenomena that involve ice.
Glaciology is an interdisciplinary Earth science that integrates geophysics, geology, physical geography, geomorphology, c ...
References
External links
Map of Heard Island and McDonald Islands, including all major topographical features
Glaciers of Heard Island and McDonald Islands
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