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Astronaut Photography of Earth - Display Record

ISS010-E-5072

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	File Name	File Size (bytes)	Width	Height	Annotated	Cropped	Purpose
View	ISS010-E-5072.JPG	64567	639	435	No	No
View	ISS010-E-5072.JPG	281766	540	357	Yes	Yes	NASA's Earth Observatory web site
View	ISS010-E-5072.JPG	281766	540	357	Yes	Yes	Earth From Space collection
View	ISS010-E-5072.JPG	794400	1000	661	No	Yes	NASA's Earth Observatory web site

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	File Name	File Size (bytes)	Width	Height	Annotated	Cropped	Purpose	Comments
Request	ISS010-E-5072.JPG	794400	1000	661	No	Yes	Earth From Space collection
Request	ISS010-E-5072.JPG	890144	3032	2064	No	No

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Electronic Image Data

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Identification

Mission: ISS010 Roll: E Frame: 5072 Mission ID on the Film or image: ISS010
Country or Geographic Name: ARGENTINA
Features: IBERA SWAMP, LAKES, ROAD,GLINT
Center Point Latitude: -28.7 Center Point Longitude: -58.4 (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: 2
Camera Focal Length: 800mm
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

Date: 20041025 (YYYYMMDD)GMT Time: 163712 (HHMMSS)
Nadir Point Latitude: -28.7, Longitude: -58.3 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: West
Sun Azimuth: 316 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 195 nautical miles (361 km)
Sun Elevation Angle: 69 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 1881

Captions

Iberá Swamp Topography, NE Argentina

The central lake in this astronaut photograph is one of hundreds in the Iberá swamplands that were formed by South America’s second largest river, the Paraná. Although this great river now lies 120 kilometers to the north of this area today, its channel has swung over a great “inland delta” in the recent geological past.

This and other lakes were captured by the astronaut in the camera’s sunglint region (the area where the Sun reflects directly back toward the camera ) as the International Space Station passed over this remote but vast swampland in northeast Argentina. The glint pattern gives the lakes a slivery appearance, and shows winds ruffling the water surfaces. The lakes in this image lie within side channels of the Paraná that formed when the river flowed through the region from the northeast. The center coordinates of this enhanced image are 28.7°S 58.4°W. The central lake in the image is about 2 km long.

Forest, swamp, and prairie vegetation outline the low topography which consists of lakes, low swells, and depressions. The rounded shape of the topography probably relates to the effects of wind. Evidence from areas both north and south of the swamps suggests that these parts of South America were climatically drier during several periods in the last couple of million years (while North America and Europe were experiencing glaciations). Aridity allows the effects of wind to become pronounced. Wind builds elliptical sand dunes and scours out rounded depressions. Wind also generates waves on lakes that smooth sandy and muddy lake shores.

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