Astronaut Photography of Earth - Display Record
ISS027-E-11058
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| File Name | File Size (bytes) | Width | Height | Annotated | Cropped | Purpose | Comments | |
|---|---|---|---|---|---|---|---|---|
| View | ISS027-E-11058.JPG | 120795 | 640 | 437 | No | No | ||
| View | ISS027-E-11058.JPG | 680432 | 540 | 814 | Yes | Yes | NASA's Earth Observatory web site | |
| View | ISS027-E-11058.JPG | 1833440 | 1000 | 1507 | No | Yes | NASA's Earth Observatory web site | |
| View | ISS027-E-11058.JPG | 1868774 | 4288 | 2929 | No | No |
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Electronic Image Data
Camera Files >> No sound file available.Identification
Mission: ISS027 Roll: E Frame: 11058 Mission ID on the Film or image: ISS027Country or Geographic Name: ARGENTINA
Features: PARANA R., FLOODPLAIN MEANDERS, LAKES
Center Point Latitude: -29.2 Center Point Longitude: -59.4 (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: 38Camera Focal Length: 400mm
Camera: N2: Nikon D2Xs
Film: 4288E : 4288 x 2848 pixel CMOS sensor, RGBG imager color filter.
Quality
Film Exposure:Percentage of Cloud Cover: 10 (0-10)
Nadir
Date: 20110409 (YYYYMMDD)GMT Time: 145340 (HHMMSS)Nadir Point Latitude: -31.7, Longitude: -59.0 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: North
Sun Azimuth: 24 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 192 nautical miles (356 km)
Sun Elevation Angle: 48 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 3010
Captions
Paraná River Floodplain, Northern ArgentinaNote: This caption refers to the image versions labeled "NASA's Earth Observatory web site".
This astronaut photograph shows a 29-km stretch of the Paraná River, South America’s second largest river, downstream of the small city of Goya (barely distinguishable as grayer surfaces in the extreme top right corner of the image). The Paraná River ranges up to 3 km wide along the reach illustrated in the image. Its strong brown color indicates that it is carrying a heavy load of muddy sediment. Smaller active side channels also carry this muddy water. Numerous lakes are typical on active floodplains, and appear here as irregular bodies of water. Some appear brown, indicating that they have been refilled during recent higher flood levels of the active channels.
The main channel Paraná River (image right) is deep enough to allow smaller ocean-going ships to pass north of the illustrated region to the capital city of Asunción in landlocked Paraguay, fully 1200 km inland (well out of the image). The Paraná River is thus an important transportation route for landlocked cities such as Asunción and inland cities of eastern landlocked Bolivia and inland Brazil.
The Paraná floodplain occupies the entire image; it is so wide—18 km in this view—that its banks are not visible. Numerous curved, or meandering past channels are the most prominent characteristic of the floodplain. These indicate prior positions of rivers. As river beds move laterally by natural processes, they leave remnants of their channels, which appear as lakes, and finally fill with mud. This is an excellent image for illustrating these meander forms. Other astronaut photographs are available showing more examples of strong meandering—on the Rio Negro of southern Argentina, the Marmore River of Bolivia, and the Amazon River of western Brazil.
From a geological standpoint it is interesting that almost all the past channels are similar in curvature to the smaller active side rivers; almost no forms show, in any obvious way, prior positions of the main, very wide Paraná channel. The reverse might be expected since the main channel is so dominant in the modern landscape.
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