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This project established a permafrost monitoring network in this region, providing a baseline of permafrost thermal regimes for assessing future change at a total of 26 automated monitoring stations. Stations have collected year-round temperature data from the active layer and the permafrost starting from the summer of 2011. The strong correspondence between spatial variability in permafrost thermal regime and an existing ecotype map allowed for the development of a map of ‘permafrost thermal classes’ for the broader study region. Further, the annual temperature data was used to calibrate models of soil thermal regimes as a function of climate, providing estimates of both historic and future permafrost thermal regimes...
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This collection (known internally at Maryland Geological Survey as Component 9) consists of 1,474 black-and-white aerial photographs (1,472 unique frames plus 2 duplicates) plus 2 index maps which serve as a finding aid for the photographs in the two sub-components of this collection -- DC Collection 1 and DC Collection 2. The photographs are 9 in. by 9 in. in size and cover Washington, DC and vicinity (including portions of Maryland and Virginia). The counties in Maryland covered by these aerial photographs are Anne Arundel, Howard, Montgomery, and Prince George's Counties. No date is printed on these photographs; however, based on features shown in the photographs, Maryland Geological Survey (MGS) estimates...
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Delaware Water Gap National Recreation Area, Pennsylvania. View is from part way up the mountain, looking southeast, near Dunfield.
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Wright Brothers National Memorial, North Carolina. Granite boulder marking the site of the first successful flight of a motor-driven airplane made by Orville Wright on December 17, 1903, near Kill Devil Hills. September 7, 1929.
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Death Valley National Park, California. Conglomerate Copper Canyon Formation in Lower Copper Canyon. 1956.
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Death Valley National Park, California. Ten miles south of Furnace Creek on the east slope of the Panamint Range. Road crossing Death Valley in the right foreground. October 11, 1900.
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Death Valley National Park, California. Sand Springs at the north end of Death Valley. View is to the south. September 11, 1900.
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Olivine gabbro boulders weathered from fanglomerate in the Salt Creek Hills to the east of the Panamint Mountains. Death Valley National Park, California. 1938.
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Craters of the Moon National Monument near Arco. Fracture line marked by craters; basalt flow in middle distance. View south from road at divide east of "Big Craters." Idaho. July 31, 1925.
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Craters of the Moon National Monument, Idaho. Looking out Indian Tunnel, a lava tube. September 27, 1926.
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Album Caption: Mesa Verde National Park, Colorado. Cliff Palace, largest cliff dwelling. Overhanging ledge is Cliff House sandstone member of Mesa Verde Formation. Montezuma County, Colorado. June 1924.
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Craters of the Moon National Monument, Idaho. Cracked and fissured surface of a billowy pahoehoe lava flow northeast of Big Cinder Butte. October 9, 1926.


map background search result map search result map Denali National Park and Preserve, Alaska. Along the front of Mount McKinley, 1902. Cliff Palace, Mesa Verde Formation, Montezuma County, Colorado.  June 1924. Death Valley National Park, California. Conglomerate Copper Canyon Formation in Lower Copper Canyon. 1956. Glacier Bay National Park and Preserve, Alaska. Glaciated rocks at Reid Inlet. Harriman Expedition, 1899. Mesa Verde National Park, Colorado. Spruce Tree House. 1914. Distant view of the Great Hot Springs on the Madison River. Yellowstone National Park, Wyoming. circa 1878. Hayden Valley. Yellowstone National Park, Wyoming. n.d. Craters of the Moon National Monument near Arco. Fracture line marked by craters; basalt flow in middle distance. Kings Canyon National Park, California. Fin Dome, viewed from the west. 1925. Scotts Bluff National Monument, Nebraska. 1975. Craters of the Moon National Monument, Idaho. Looking out Indian Tunnel, a lava tube. September 27, 1926. Craters of the Moon National Monument, Idaho. Cracked and fissured surface of a billowy pahoehoe lava flow northeast of Big Cinder Butte. Wright Brothers National Memorial, North Carolina. Granite boulder marking the site of the first successful flight of a motor-driven airplane made by Orville Wright on December 17, 1903, near Kill Devil Hills. Delaware Water Gap National Recreation Area, Pennsylvania. View is from part way up the mountain, looking southeast, near Dunfield. Ruins of Harmony Borax Mill. Death Valley National Park, California. 1938. Olivine gabbro boulders weathered from fanglomerate. Death Valley National Park, California. 1938. Death Valley National Park, California. Sand Springs at the north end of Death Valley. View is to the south. September 11, 1900. Death Valley National Park, California. Ten miles south of Furnace Creek on the east slope of the Panamint Range. Washington, DC & Vicinity Aerial Photographs, 1945-1949 Wright Brothers National Memorial, North Carolina. Granite boulder marking the site of the first successful flight of a motor-driven airplane made by Orville Wright on December 17, 1903, near Kill Devil Hills. Scotts Bluff National Monument, Nebraska. 1975. Cliff Palace, Mesa Verde Formation, Montezuma County, Colorado.  June 1924. Mesa Verde National Park, Colorado. Spruce Tree House. 1914. Delaware Water Gap National Recreation Area, Pennsylvania. View is from part way up the mountain, looking southeast, near Dunfield. Kings Canyon National Park, California. Fin Dome, viewed from the west. 1925. Craters of the Moon National Monument near Arco. Fracture line marked by craters; basalt flow in middle distance. Craters of the Moon National Monument, Idaho. Looking out Indian Tunnel, a lava tube. September 27, 1926. Craters of the Moon National Monument, Idaho. Cracked and fissured surface of a billowy pahoehoe lava flow northeast of Big Cinder Butte. Distant view of the Great Hot Springs on the Madison River. Yellowstone National Park, Wyoming. circa 1878. Hayden Valley. Yellowstone National Park, Wyoming. n.d. Washington, DC & Vicinity Aerial Photographs, 1945-1949 Death Valley National Park, California. Conglomerate Copper Canyon Formation in Lower Copper Canyon. 1956. Ruins of Harmony Borax Mill. Death Valley National Park, California. 1938. Olivine gabbro boulders weathered from fanglomerate. Death Valley National Park, California. 1938. Death Valley National Park, California. Sand Springs at the north end of Death Valley. View is to the south. September 11, 1900. Death Valley National Park, California. Ten miles south of Furnace Creek on the east slope of the Panamint Range. Denali National Park and Preserve, Alaska. Along the front of Mount McKinley, 1902.