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Astronaut Photography of Earth - Display Record
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IdentificationMission: ISS020 Roll: E Frame: 28123 Mission ID on the Film or image: ISS020
Country or Geographic Name: USA-OREGON
Features: MOUNT HOOD, WHITE RIVER, GOVERMENT CAMP
Center Point Latitude: 45.4 Center Point Longitude: -121.7 (Negative numbers indicate south for latitude and west for longitude)
Stereo: (Yes indicates there is an adjacent picture of the same area)
ONC Map ID: JNC Map ID:
CameraCamera Tilt: 26
Camera Focal Length: 800mm
Camera: N3: Nikon D3
Film: 4256E : 4256 x 2832 pixel CMOS sensor, 36.0mm x 23.9mm, total pixels: 12.87 million, Nikon FX format.
Percentage of Cloud Cover: 10 (0-10)
NadirGMT Date: 20090805 (YYYYMMDD) GMT Time: 230929 (HHMMSS)
Nadir Point Latitude: 44.2, Longitude: -120.8 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: Northwest
Sun Azimuth: 249 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 188 nautical miles (348 km)
Sun Elevation Angle: 43 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 1379
CaptionsMount Hood, Oregon
Mount Hood is located within the Cascade Range of the western United States, and it is the highest peak in Oregon (3,426 meters, or 11,240 feet ). The Cascade Range is characterized by a line of volcanoes associated with a slab of oceanic crust that is subducting, or descending underneath, the westward-moving, continental crust of North America. Magma generated by the subduction process rises upward through the crust and feeds a line of active volcanoes that extends from northern California in the United States to southern British Columbia in Canada.
While hot springs and steam vents are still active on Mount Hood, the last eruption from the volcano occurred in 1866. The volcano is considered dormant, but still actively monitored. Separate phases of eruptive activity produced pyroclastic flows and lahars that carried erupted materials down all of the major rivers draining the volcano. Gray volcanic deposits extend southwards along the banks of the White River (image lower left) and form several prominent ridges along the southeast to southwest flanks of the volcano. The deposits contrast sharply with the green vegetation on the lower flanks of the volcano.
The Mount Hood stratovolcano—a typically cone-shaped structure formed by layered lava flows and explosive eruption deposits—hosts twelve mapped glaciers along its upper flanks. Like other glaciers in the Pacific Northwest, the Hood glaciers have been receding due to global warming, and they have lost an estimated 61 percent of their volume over the past century. The predicted loss of glacial meltwater under future warming scenarios will have significant effects on regional hydrology and water supplies.
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