Johnson Glacier
Encyclopedia
Johnson Glacier is a glacier
flowing north between McDonald Heights
and Bowyer Butte
to merge with Getz Ice Shelf
on the coast of Marie Byrd Land
. Mapped by United States Geological Survey
(USGS) from surveys and U.S. Navy air photos, 1959-65. Named by Advisory Committee on Antarctic Names
(US-ACAN) for Roland L. Johnson, Boatswain's Mate, U.S. Navy, crew member of the USS Glacier during exploration of this coast in the 1961-62 season.
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...
flowing north between McDonald Heights
McDonald Heights
McDonald Heights is a broad, mainly snow-covered heights about 35 nautical miles long and rising over 1,000 m between Cape Burks and Morris Head on the coast of Marie Byrd Land. The heights are bounded southward by the Hull, Kirkpatrick and Johnson Glaciers. The feature was photographed from...
and Bowyer Butte
Bowyer Butte
Bowyer Butte is a steep-cliffed eminence with a nearly flat summit, wide and high, located between the lower ends of the Johnson Glacier and the Venzke Glacier on the coast of Marie Byrd Land. It was discovered and photographed from the air by the U.S. Antarctic Service, 1939–41, and named by...
to merge with Getz Ice Shelf
Getz Ice Shelf
Getz Ice Shelf is an Antarctic ice shelf, over 480 km long and from 32 to 96 km wide, bordering the Hobbs and Bakutis Coasts of Marie Byrd Land between McDonald Heights and Martin Peninsula. Several large islands are partially or wholly embedded in the ice shelf.The ice shelf westward of Siple...
on the coast of Marie Byrd Land
Marie Byrd Land
Marie Byrd Land is the portion of West Antarctica lying east of the Ross Ice Shelf and the Ross Sea and south of the Pacific Ocean, extending eastward approximately to a line between the head of the Ross Ice Shelf and Eights Coast. It stretches between 158°W and 103°24'W...
. Mapped by United States Geological Survey
United States Geological Survey
The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology,...
(USGS) from surveys and U.S. Navy air photos, 1959-65. Named by Advisory Committee on Antarctic Names
Advisory Committee on Antarctic Names
The Advisory Committee on Antarctic Names is an advisory committee of the United States Board on Geographic Names responsible for recommending names for features in Antarctica...
(US-ACAN) for Roland L. Johnson, Boatswain's Mate, U.S. Navy, crew member of the USS Glacier during exploration of this coast in the 1961-62 season.