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Alaska Glaciers. Columbia Glacier, which is southwest of Valdez in the Chugach Mountains. The glacier spreads into a side valley in which there are glacial lakes. Harriman Expedition, June 26, 1899. Photos ggk00340, ggk00341, ggk00342, ggk00343, and ggk00344 form a panorama.
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Studies of Columbia Glacier. Oblique aerial photo showing roughness of the glacier surface. The major crevasse valleys are about 20 m deep and 50 m apart. The center of the scene is about 2.5 km upglacier from the terminus, view to southeast. The glacier flows from left to right. Valdez district, Alaska Gulf region, Alaska. October 8, 1975. (USGS photo no. 75M5-56 by L. R. Mayo) Published as figure 2 in U. S. Geological Survey. Professional paper 1258-F. 1985.
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Studies of Columbia Glacier. Vertical aerial photograph from about 7,000 m above sea level showing wave ogives downglacier from an unnamed ice fall upglacier from the west branch of Columbia Glacier. Valdez district, Alaska Gulf region, Alaska. September 26, 1981. Published as figure 8 in U. S. Geological Survey. Professional paper 1258-F. 1985.
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Alaska Glaciers. Cliff of Columbia Glacier, which is southwest of Valdez in the Chugach Mountains, viewed from the west shore of Columbia Bay. The ice cliff is 300 feet high here. Harriman Expedition, June 27. 1899.
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Alaska Glaciers. Columbia Glacier, which is southwest of Valdez in the Chugach Mountains. Between the nearer and more distant hills on the left the two arms of the glacier meet, making the distant hill a nunatak. Harriman Expedition, June 26, 1899. Photos ggk00340, ggk00341, ggk00342, ggk00343, and ggk00344 form a panorama.
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Alaska Glaciers. Front of Columbia Glacier, taken from small island on which the glacier rests, north of Heather Island, looking northeast. Valdez district, Alaska Gulf region, Alaska. 1905.
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Studies of Columbia Glacier. Vertical aerial photograph of the main glacier in the vicinity of approx. 25 km, showing marked increase in crevasse width over a short distance due to intense extension. The glacier flows to the right (south). Valdez district, Alaska Gulf region, Alaska. April 29, 1978. Published as figure 17 in U. S. Geological Survey. Professional paper 1258-F. 1985.
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Studies of Columbia Glacier. Superimposed portions of vertical aerial photos illustrating the photograph-overlay method. The two photos, taken on September 26 and November 15, 1981, are displaced about 190 m in the north-south direction. Note that in an area between the two arrows the image appears sharp, whereas above and below that, the image area appears doubled and confused. The sharp area marks a zone of constant displacement (velocity). North is to the top, and flow is from top to bottom. This area of the glacier is about 950 m wide and is located near the center of the glacier at approx. 64.4 km. The vertical dark band is a streak of debris on the ice (medial moraine). Valdez district, Alaska Gulf region,...
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Studies of Columbia Glacier. Low-altitude oblique aerial photograph showing detail of the intensely fractured ice surface. This photo shows an area about 1 km from the terminus and about 1 km from the west margin, view to south-southeast. Flow is diagonal to the right and away from the camera. Valdez district, Alaska Gulf region, Alaska. October 8, 1975. (USGS photo no. 75M5-62 by L. R. Mayo) Published as figure 3 in U. S. Geological Survey. Professional paper 1258-F. 1985.
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Alaska Glaciers. End of Columbia Glacier, which is southwest of Valdez in the Chugach Mountains. Harriman Expedition, June 26, 1899. Photos ggk00340, ggk00341, ggk00342, ggk00343, and ggk00344 form a panorama.
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Studies of Columbia Glacier. Vertical aerial photo from- about 7,000 m above sea level showing terminus, including a large embayment toward the east edge, and the lowest 6 km of the lower reach. North is to the top. Valdez district, Alaska Gulf region, Alaska. August 26, 1978. Published as figure 4 in U. S. Geological Survey. Professional paper 1258-F. 1985.
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Alaska Glaciers. Columbia Glacier, which is southwest of Valdez in the Chugach Mountains. The ship in Columbia Bay is the George W. Elder. Harriman Expedition, June 25, 1899.
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Alaska Glaciers. Columbia Glacier, which is southwest of Valdez in the Chugach Mountains. Harriman Expedition, June 26, 1899. Photos ggk00340, ggk00341, ggk00342, ggk00343, and ggk00344 form a panorama.
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Studies of Columbia Glacier. Oblique aerial photo of a part of the terminus, showing rough surface near the terminus ice cliff. Icebergs visible at right. Valdez district, Alaska Gulf region, Alaska. October 8, 1975. (USGS photo no. 75M5-54 by L. R. Mayo) Published as figure 9 in U. S. Geological Survey. Professional paper 1258-F. 1985.