Deacock Glacier
| Deacock Glacier | |
|---|---|
| Type | tidewater |
| Location | Heard Island, Territory of Heard Island and McDonald Islands, Australia |
| Coordinates | 53°11′S 73°31′E / 53.183°S 73.517°E |
| Thickness | approximately 55 meters |
| Terminus | between Cape Labuan and Long Beach |
| Status | Retreating |
Deacock Glacier (53°11′S 73°31′E / 53.183°S 73.517°E) is a glacier close west of Lavett Bluff on the south side of Heard Island in the southern Indian Ocean. Its terminus is between Cape Labuan and Long Beach. To the east of Deacock Glacier is Fiftyone Glacier, whose terminus is located between Lavett Bluff and Lambeth Bluff. To the west of Deacock Glacier is Gotley Glacier, whose terminus is located between Cape Arkona and Cape Labuan.
Surveyed by ANARE (Australian National Antarctic Research Expeditions), 1948-63. Named by Antarctic Names Committee of Australia (ANCA) for W. Deacock, a member of ANARE on Heard Island in 1963.
The landscape of Heard Island and nearby McDonald Island is constantly changing due to volcanism, strong winds and waves, and climate change. Volcanic activity has been observed in this area since the mid-1980s, with fresh lava flows on the southwest flanks of Heard Island. Satellite imagery shows that McDonald Island increased in size from about 1 to 2.5 square kilometers between 1994 and 2004, as a result of volcanic activity.
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