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Astronaut Photography of Earth - Display Record

ISS010-E-5803

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File NameFile Size (bytes)WidthHeightAnnotatedCroppedPurposeComments
View ISS010-E-5803.JPG 76784639435 No No
View ISS010-E-5803.JPG 215825357540 Yes Yes Earth From Space collection
View ISS010-E-5803.JPG 6114611000661 No Yes NASA's Earth Observatory web site
View ISS010-E-5803.JPG 102407930322064 No No

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Electronic Image Data

Camera Files >> No sound file available.

Identification

Mission: ISS010 Roll: E Frame: 5803 Mission ID on the Film or image: ISS010
Country or Geographic Name: ARGENTINA
Features: PERITO MORENO GL., L. ARGENTIN0
Center Point: Latitude: -50.5 Longitude: -73.0 (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:

Camera

Camera Tilt: 8
Camera Focal Length: 180mm
Camera: E4: Kodak DCS760C Electronic Still Camera
Film: 3060E : 3060 x 2036 pixel CCD, RGBG array.

Quality

Film Exposure:
Percentage of Cloud Cover: 10 (0-10)

Nadir

GMT Date: 20041104 (YYYYMMDD) GMT Time: 163828 (HHMMSS)
Nadir Point Latitude: -50.3, Longitude: -73.4 (Negative numbers indicate south for latitude and west for longitude)

Nadir to Photo Center Direction: Southeast
Sun Azimuth: 359 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 194 nautical miles (359 km)
Sun Elevation Angle: 55 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 2038

Captions

Moreno Glacier, Argentina

Perito Moreno (or Moreno Glacier) is located in the icefields of southern Patagonia and is the centerpiece of the Parque Nacional Los Glaciares. The glacier is also noteworthy as a tourist attraction, due to periodic formation of an ice dam between the main portion of Lago (Lake) Argentino to the northeast and a southern extension of the lake (Brazo Rico). Meltwater runoff from the surrounding mountains fills Brazo Rico to a higher elevation than nearby Lago Argentino and exerts hydrostatic pressure on the ice dam. This pressure leads to formation of drainage tunnels and fractures in the ice dam, which eventually fails. Earlier this year (March 2004) the ice dam collapsed in a spectacular show.



A new ice dam across the Brazo Rico arm of Lago Argentino is visible in this astronaut photograph. The past extent of glaciation in the region is marked by several valleys formerly filled by flowing ice. A particularly striking example of this landscape feature is in the center of the image, where five glacial valleys converge to a central star-shaped outflow valley. Widespread recession of the glaciers in southern Patagonia has occurred over the last 30 years possibly due to warming of the regional climate. Contrary to this trend, Perito Moreno seems to be maintaining equilibrium between ice formation in the mountains and ice loss due to melting and calving into Lago Argentino.






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