Humboldt Graben
Encyclopedia
Humboldt Graben is a glacier
-filled valley
, 20 nautical miles (37 km) long, trending north-south between the Humboldt Mountains
and the Petermann Ranges
in Queen Maud Land
. The feature was discovered and mapped by the German Antarctic Expedition
under Ritscher, 1938–39, who named it in association with the adjacent Humboldt Mountains.
Glacier
A glacier is a large persistent body of ice that forms where the accumulation of snow exceeds its ablation over many years, often centuries. At least 0.1 km² in area and 50 m thick, but often much larger, a glacier slowly deforms and flows due to stresses induced by its weight...
-filled valley
Valley
In geology, a valley or dale is a depression with predominant extent in one direction. A very deep river valley may be called a canyon or gorge.The terms U-shaped and V-shaped are descriptive terms of geography to characterize the form of valleys...
, 20 nautical miles (37 km) long, trending north-south between the Humboldt Mountains
Humboldt Mountains
Humboldt Mountains is a group of mountains immediately west of the Petermann Ranges, forming the westernmost portion of the Wohlthat Mountains in Queen Maud Land, Antarctica. They were discovered and mapped by the Third German Antarctic Expedition , led by Capt...
and the Petermann Ranges
Petermann Ranges
The Petermann Ranges are a number of associated mountain ranges including the Ostliche Petermann, Mittlere Petermann, Westliche Petermann, Südliche Petermann, and Pieck Ranges, located just east of the Humboldt Mountains in the central Wohlthat Mountains of Queen Maud Land. They were discovered and...
in Queen Maud Land
Queen Maud Land
Queen Maud Land is a c. 2.7 million-square-kilometre region of Antarctica claimed as a dependent territory by Norway. The territory lies between 20° west and 45° east, between the British Antarctic Territory to the west and the Australian Antarctic Territory to the east. The latitudinal...
. The feature was discovered and mapped by the German Antarctic Expedition
New Swabia
New Swabia is a cartographic name sometimes given to an area of Antarctica between 20°E and 10°W in Queen Maud Land, which within Norway is administered as a Norwegian dependent territory under the Antarctic Treaty System...
under Ritscher, 1938–39, who named it in association with the adjacent Humboldt Mountains.