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Bentley Subglacial Trench information


The Bentley Subglacial Trench is a vast topographic trench in Marie Byrd Land, West Antarctica, 80°S, 115°W. At 2,555 meters (8,382 ft) below sea level, it (along with the deepest points within the adjacent Byrd Subglacial Basin) is among the lowest points on the surface of the Earth not covered by ocean, although it is covered by ice.[1] (See Extremes on Earth and Vestfold Hills).

The trench was named in 1961 after Charles R. Bentley who was the geophysicist in charge of the scientific expeditions in West Antarctica in 1957–59 that led to its discovery.

In 2016 some hot anomalies were detected beneath Bentley Subglacial Trench and Mount Sidley volcano.[2]

  1. ^ Central Intelligence Agency, The World Factbook
  2. ^ AGUPublications

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Bentley Subglacial Trench

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The Bentley Subglacial Trench is a vast topographic trench in Marie Byrd Land, West Antarctica, 80°S, 115°W. At 2,555 meters (8,382 ft) below sea level...

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Marie Byrd Land

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are not named, the exception being major features such as the Bentley Subglacial Trench. Marie Byrd Seamount (70°0′S 118°0′W / 70.000°S 118.000°W /...

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List of places on land with elevations below sea level

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any of the trenches in the list above is the Bentley Subglacial Trench in Antarctica, at a depth of 2,540 m (8,330 ft). It is subglacial, covered permanently...

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Geography of Antarctica

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142°02′E) George V Land (142°02' – 153°45'E) George V Coast Zélée Subglacial Trench Oates Land (153°45' – 160°E) Victoria Land (70°30' – 78°'S) Weddell...

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Byrd Subglacial Basin

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the south by a low subglacial ridge which separates this feature from Bentley Subglacial Trench. A rude delineation of this subglacial basin was determined...

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Lists of places in Antarctica

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Highest point Vinson Massif, 4,897 m (16,066 ft) Lowest point Bentley Subglacial Trench, −2,555 m (−8,382.5 ft) Longest river Onyx River, 25 km Largest...

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West Antarctic Rift System

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been mapped under the West Antarctic Ice Sheet including the Bentley Subglacial Trench. Rifting began in the Late Cretaceous as a result of tectonic...

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History of ice drilling

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1370 m depth, and then extending the hole below the ice to 1391 m. The subglacial material included a mixture of rocks and frozen till, and was about 50–60%...

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