| dbo:abstract |
Lake Atna (/ˈɑːtnə/; also known as Lake Ahtna) was a prehistoric proglacial lake that initially formed approximately 58 ka (thousand years ago) in the Copper River Basin, an area roughly centered around 245 km (152 mi) northeast of modern-day Anchorage, Alaska. The lake formed, and dispersed, during the Wisconsin glaciation. The lake existed in several forms, with several prominent shorelines observable in modern geology. At its greatest extent, the lake surface area was approximately half the size of modern-day Lake Ontario, and possibly much larger. The basin of the lake lay within an area bordered by the Alaska Range to the north, the Wrangell Mountains to the east, the Chugach Mountains to the south, and the Talkeetna Mountains to the west. Lake Atna may have generated several of the largest ever glacial lake outburst floods. Old deposits from one of these floods may have added to the destruction caused by the 1964 Alaska earthquake. (en) |
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https://pubs.usgs.gov/circ/1989/1026/report.pdf https://www.researchgate.net/publication/336721960 http://gis.ess.washington.edu/grg/publications/pdfs/Wiedmer_etal_2010.pdf https://web.archive.org/web/20170131195922/https:/pubs.usgs.gov/circ/1989/1026/report.pdf https://web.archive.org/web/20170220223838/https:/www.nps.gov/wrst/learn/nature/upload/A-Geologic-Guide-color-version-for-web.pdf https://web.archive.org/web/20171215160220/http:/gis.ess.washington.edu/grg/publications/pdfs/Wiedmer_etal_2010.pdf https://web.archive.org/web/20210701075339/https:/www.researchgate.net/publication/336721960_Geoarchaeology_of_Glacial_Lakes_Susitna_and_Atna https://www.nps.gov/wrst/learn/nature/upload/A-Geologic-Guide-color-version-for-web.pdf http://ac.els-cdn.com/S0277379102000276/1-s2.0-S0277379102000276-main.pdf%3F_tid=57a16cfa-d848-11e6-a6ef-00000aab0f26&acdnat=1484171770_982f32ca98e603a04e0233a9317a3877 |
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Map showing one of the possible extents of ancient Lake Atna (en) |
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Map showing one of the possible extents of ancient Lake Atna (en) |
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Lake Atna (en) |
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Alaska#North America (en) |
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Historic location of Lake Atna in Alaska, US (en) |
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Lake Atna (/ˈɑːtnə/; also known as Lake Ahtna) was a prehistoric proglacial lake that initially formed approximately 58 ka (thousand years ago) in the Copper River Basin, an area roughly centered around 245 km (152 mi) northeast of modern-day Anchorage, Alaska. The lake formed, and dispersed, during the Wisconsin glaciation. The lake existed in several forms, with several prominent shorelines observable in modern geology. At its greatest extent, the lake surface area was approximately half the size of modern-day Lake Ontario, and possibly much larger. The basin of the lake lay within an area bordered by the Alaska Range to the north, the Wrangell Mountains to the east, the Chugach Mountains to the south, and the Talkeetna Mountains to the west. (en) |
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Lake Atna (en) |
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yago-res:Lake Atna wikidata:Lake Atna https://global.dbpedia.org/id/2eP6j |
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Lake Atna (en) |
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