Sif Glacier
glacier in Greenland

Sif Glacier (Danish: Sifs Gletscher), is a glacier in northern Greenland. Administratively it belongs to the Northeast Greenland National Park.
History
The Sif Glacier was seen during aerial surveys by Lauge Koch and was named after Sif, the goddess representing Mother Earth in Norse mythology.
The glacier was first explored from the ground by the British Joint Services Expedition in 1969.
Geography
The Sif Glacier is a slow-moving glacier located in Johannes V. Jensen Land, roughly in the middle of the Roosevelt Range. It flows in a WSW/ENE direction from the ice cap of the Mary Peary Peaks, bifurcating south of the Birgit Koch Peaks with one arm flowing roughly northwards and another southwards until their terminuses in the Northern and in the Southern Tvillingesø (Twin Lakes) respectively.
The northern branch of the Sif Glacier ends in a valley open to the north with its mouth in Constable Bay, where it formed prominent terminal moraines in the past.
Begin with the source’s own compact description: “Sif Glacier” is glacier in Greenland. The dossier treats that line as a proposition to test through Glacier, glacier and Greenland, not as a finished interpretation.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jul 3, 2026. The linked authority identifier is Q24822552. Authority coordinates are 83.333, -31.500. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1969.
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This entry incorporates text from “Sif Glacier” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.