Johansen Islands

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Johansen Islands
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Johansen Islands
Location in Antarctica
Geography
Location Antarctica
Coordinates 69°3′S72°52′W / 69.050°S 72.867°W / -69.050; -72.867 Coordinates: 69°3′S72°52′W / 69.050°S 72.867°W / -69.050; -72.867
Administration
Administered under the Antarctic Treaty System
Demographics
PopulationUninhabited

The Johansen Islands are a group of small, low, partly snow-free islands lying within Lazarev Bay and Wilkins Sound, 22 kilometres (12 nmi) west-northwest of Cape Vostok, at the northwest end of Alexander Island, Antarctica. They were discovered from the USS Bear on its initial approach to establish the East Base of the United States Antarctic Service in 1940, and were named for Bendik Johansen, the ice pilot for the expedition, who served in a similar capacity on the Byrd Antarctic Expeditions of 1928–30 and 1933–35. [1]

Lazarev Bay is a rectangular bay, 15 nautical miles (28 km) long and 13 nautical miles (24 km) wide, which separates Alexander Island from Rothschild Island and is bounded on the south side by the Wilkins Ice Shelf, which joins the east portion of Rothschild Island and the west portion of Alexander Island. Two minor islands, Dint Island and Umber Island, lie merged within the ice of the Wilkins Ice Shelf within Lazarev Bay.

Wilkins Sound sound

Wilkins Sound is a seaway in Antarctica that is largely occupied by the Wilkins Ice Shelf. It is located on the southwest side of the Antarctic Peninsula between the concave western coastline of Alexander Island and the shores of Charcot Island and Latady Island farther to the west.

Cape Vostok is a rocky headland which forms the west extremity of the Havre Mountains and the northwest extremity of Alexander Island in Antarctica. It was discovered by the First Russian Antarctic Expedition in 1821, led by Fabian Gottlieb von Bellingshausen and Mikhail Lazarev. It was mapped in detail from aerial photos taken by the Ronne Antarctic Research Expedition in 1947–48, and later by Searle of the Falkland Islands Dependencies Survey in 1960. The formation was named by the United Kingdom Antarctic Place-Names Committee for the sloop Vostok, commanded by Bellingshausen. The name means "east", although the cape is located on the western point of the island.

See also

Dint Island

Dint Island is a rocky island, 3 kilometres (1.5 nmi) long. Probably first seen from the air by the United States Antarctic Service, 1939–41, it was first mapped from air photos taken by the Ronne Antarctic Research Expedition, 1947–48, by D. Searle of the Falkland Islands Dependencies Survey in 1960. It was so named by the UK Antarctic Place-Names Committee because a distinctive cirque makes a dent, or dint, on the south side of the island.

Merger Island

Merger Island is an ice-covered island 6 kilometres (3 nmi) long at the entrance of Haydn Inlet, lying off the west coast of Alexander Island, Antarctica. It was first mapped from air photos taken by the Ronne Antarctic Research Expedition in 1947–48 by D. Searle of the Falkland Islands Dependencies Survey in 1960. The name given by the UK Antarctic Place-Names Committee is descriptive, the island being almost submerged in the surrounding Wilkins Ice Shelf.

Umber Island

Umber Island is a rocky island, 2.4 km long, lying 1.75 km (1.09 mi) southwest of Kamhi Point and 10 km northwest of Dint Island lying within Lazarev Bay, off the west side of Alexander Island, Antarctica. The island was mapped from air photos taken by the Ronne Antarctic Research Expedition (RARE) in 1947–48, by Searle of the Falkland Islands Dependencies Survey in 1960, it was so named by the United Kingdom Antarctic Place-Names Committee because on the RARE photos the island appears in deep shadow cast by the Havre Mountains to the north.

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References

  1. "Johansen Islands". Geographic Names Information System . United States Geological Survey . Retrieved 2012-07-25.

PD-icon.svg This article incorporates  public domain material from the United States Geological Survey document "Johansen Islands" (content from the Geographic Names Information System ).

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