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McMurdo Dry Valleys, Landsat 7 imagery acquired on December 18, 1999 The Dry Valleys are so named because of their extremely low humidity and lack of snow or ice cover. They are also dry because, in this location, the mountains are sufficiently high that they block seaward-flowing ice from the East Antarctic Ice Sheet from reaching the Ross
[note 1] West Antarctica is covered by the West Antarctic Ice Sheet. There has been some concern about this ice sheet, as there is a small chance it will collapse due to rising temperatures in the region. If it does, global ocean levels will rise by a few metres in a short period of time. [citation needed]
The McMurdo Dry Valleys lie near McMurdo Sound and represent a special Antarctic phenomenon: landscapes that are snow and ice-free due to the extremely limited precipitation and ablation of ice in the valleys. The highest mountain of the TAM is the 4,528 m (14,856 ft) high Mount Kirkpatrick in the Queen Alexandra Range.
McMurdo Sound, Antarctica Weddell seal underwater in McMurdo Sound. The McMurdo Sound is a sound in Antarctica, known as the southernmost passable body of water in the world, located approximately 1,300 kilometres (810 mi) from the South Pole. [1]
The McMurdo Volcanic Group is a large group of Cenozoic volcanic rocks in the western Ross Sea and central Transantarctic Mountains areas of Antarctica. [1] It is one of the largest provinces of alkaline volcanism in the world, having formed as a result of continental rifting along the West Antarctic Rift System.
The frozen continent of Antarctica was the last continent humanity set foot on. The first documented landings made below the Antarctic Circle took place in 1820, when Admiral Fabian Gottlieb von Bellingshausen and the crew of the Vostok and Mirny, as part of the Russian Antarctic Expedition, made land at Peter I Island and Alexander Island.
A mostly ice-free valley, 1.5 nautical miles (2.8 km; 1.7 mi) long, located 2 nautical miles (3.7 km; 2.3 mi) northwest of Tabular Mountain in the west extremity of the Quartermain Mountains. The name is one of a group in the area associated with surveying applied in 1993 by the New Zealand Geographic Board (NZGB). A subtense bar is a fixed ...
They are south of the Kukri Hills, southeast of the Quartermain Mountains, and northeast of the Worcester Range. With its summit at 4,025 metres (13,205 ft), the massive Mount Lister forms the highest point in this range. Mount Lister is located along the western shore of McMurdo Sound between the Koettlitz, Skelton and Ferrar glaciers.