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[[File:Mount-Petras.png|300px|left]]
[[File:Kontio_tow.jpg|250px|left]]
'''[[Mount Petras]]''' is a 2865 meter high prominent mountain in the shape of a ridge in [[Westarctica]]. The mountain is located 16 kilometers southeast of Mount Flint in the [[McCuddin Mountains]].
'''[[Drift ice]]''' is the sea ice of the [[Southern Ocean]]. It extends far north in winter and retreats almost to the coastline each summer. Sea ice is frozen seawater that is usually less than a few meters thick. This is in contrast to [[Ice shelf|ice shelves]], which are formed by glaciers, float in the sea, and are up to a kilometer thick. There are two subdivisions of sea ice: fast ice, which is attached to land; and ice floes, which are not.


The ancient volcanic deposits at Mount Petras provide the oldest terrestrial evidence for [[glacier|glacial ice]] in Marie Byrd Land. The relatively high relief pre-volcanic environment is suggestive of ongoing erosion and is inconsistent with previous interpretations of a regional, low relief, early Cenozoic West Antarctic Erosion Surface.
Sea ice in the Southern Ocean melts from the bottom instead of from the surface like Arctic ice because it is covered in snow. As a result, melt ponds are rarely observed. On average, [[Antarctica|Antarctic]] sea ice is younger, thinner, warmer, saltier, and more mobile than Arctic sea ice. Due to its inaccessibility, it is not as well-studied as Arctic ice.


Scientists from the United States [[Antarctic]] Service Expedition (1939-1941) discovered Mount Petras during a flyover between 14 and 15 December 1940. The mountain was named in honor of Theodore Argyrios Petras (1911 - 2004), a master technical sergeant in the US Marine Corps, who served as the pilot of this flight.
'''([[Drift ice|Full Article...]])'''
 
On 5 May 2015, the [[Peerage of Westarctica|peerage title]] Baroness of Petras was granted to Leila Rozumski as a gift from her mother, Jennifer.
 
'''([[Mount Petras|Full Article...]])'''

Latest revision as of 16:39, 25 October 2024

Kontio tow.jpg

Drift ice is the sea ice of the Southern Ocean. It extends far north in winter and retreats almost to the coastline each summer. Sea ice is frozen seawater that is usually less than a few meters thick. This is in contrast to ice shelves, which are formed by glaciers, float in the sea, and are up to a kilometer thick. There are two subdivisions of sea ice: fast ice, which is attached to land; and ice floes, which are not.

Sea ice in the Southern Ocean melts from the bottom instead of from the surface like Arctic ice because it is covered in snow. As a result, melt ponds are rarely observed. On average, Antarctic sea ice is younger, thinner, warmer, saltier, and more mobile than Arctic sea ice. Due to its inaccessibility, it is not as well-studied as Arctic ice.

(Full Article...)