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- Ernest de Koven Leffingwell (January 13, 1875 – January 27, 1971) was an arctic explorer, geologist and Spanish–American War veteran. During the period from 1906 to 1914, Leffingwell spent nine summers and six winters on the Arctic coast of Alaska, making 31 trips by dog sled or small boats. He created the first accurate map of a large part of the Alaskan arctic coastline. He was the first to scientifically describe permafrost and to pose theories about permafrost which have largely proven true. He accurately identified the oil potential of the North Slope region of Alaska. (en)
- Ernest de Koven Leffingwell (né le 13 janvier 1875 à Knoxville et mort le 27 janvier 1971 à Carmel-by-the-Sea) est un explorateur de l'Arctique, géologue et géographe américain. (fr)
- Ernest de Koven Leffingwell, född 13 januari 1875 i , Illinois, död 27 januari 1971 i Carmel-by-the-Sea, Kalifornien, var en amerikansk geolog och upptäcktsresande. Leffingwell var den förste som skapade en noggrann karta över North Slopeområdet i Alaska. Han var även den förste som fastslog att Arktis saknar landmassa och den förste att vetenskapligt beskriva permafrost . (sv)
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- 15115 (xsd:nonNegativeInteger)
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- mapping and geology of Alaska North Slope (en)
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- Ernest de Koven Leffingwell (en)
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- Charles P. Daly Medal (en)
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- Independent; US Geological Survey (en)
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- Ernest de Koven Leffingwell (January 13, 1875 – January 27, 1971) was an arctic explorer, geologist and Spanish–American War veteran. During the period from 1906 to 1914, Leffingwell spent nine summers and six winters on the Arctic coast of Alaska, making 31 trips by dog sled or small boats. He created the first accurate map of a large part of the Alaskan arctic coastline. He was the first to scientifically describe permafrost and to pose theories about permafrost which have largely proven true. He accurately identified the oil potential of the North Slope region of Alaska. (en)
- Ernest de Koven Leffingwell (né le 13 janvier 1875 à Knoxville et mort le 27 janvier 1971 à Carmel-by-the-Sea) est un explorateur de l'Arctique, géologue et géographe américain. (fr)
- Ernest de Koven Leffingwell, född 13 januari 1875 i , Illinois, död 27 januari 1971 i Carmel-by-the-Sea, Kalifornien, var en amerikansk geolog och upptäcktsresande. Leffingwell var den förste som skapade en noggrann karta över North Slopeområdet i Alaska. Han var även den förste som fastslog att Arktis saknar landmassa och den förste att vetenskapligt beskriva permafrost . (sv)
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- Ernest de Koven Leffingwell (en)
- Ernest de Koven Leffingwell (fr)
- Ernest Leffingwell (sv)
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- Ernest de Koven Leffingwell (en)
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