Stephenson Glacier
| Stephenson Glacier | |
|---|---|
| Type | cirque/tidewater |
| Location | Heard Island, Territory of Heard Island and McDonald Islands, Australia |
| Coordinates | 53°6′S 73°42′E / 53.100°S 73.700°E |
| Thickness | approximately 55 m |
| Terminus | between Dovers Moraine and Stephenson Lagoon |
| Status | Retreating |
Stephenson Glacier (53°6′S 73°42′E / 53.100°S 73.700°E) is a glacier close west of Dovers Moraine on the east side of Heard Island in the southern Indian Ocean. Its terminus is between Dovers Moraine and Stephenson Lagoon, with part of the glacier flowing to Doppler Hill and Sealers Beach. To the north of Stephenson Glacier is Brown Glacier, whose terminus is located at Brown Lagoon. To the southwest of Stephenson Glacier is Winston Glacier, whose terminus is located at Winston Lagoon, between Cape Lockyer and Oatt Rocks.
Stephenson Glacier was surveyed by ANARE (Australian National Antarctic Research Expeditions) in 1948. It was nnamed by Antarctic Names Committee of Australia (ANCA) for P.J. Stephenson, ANARE geologist 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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