< STS045-83-25 >

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NASA Photo ID

STS045-83-25

Focal Length

Date taken

1992.03.31

Time taken

20:41:57 GMT

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5700 x 6000 pixels 500 x 526 pixels 640 x 480 pixels

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Spacecraft nadir point: 15.6° S, 62.7° W

Photo center point:

Photo center point by machine learning:

Nadir to Photo Center:

Spacecraft Altitude: 160 nautical miles (296km)

Country or Geographic Name:

Features:

LIGHT EARTHOBS

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Cloud Cover Percentage:

Sun Elevation Angle:

21°

Sun Azimuth:

281°

Camera:

Hasselblad

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Camera Tilt:

Format:

5017: Kodak, natural color positive, Ektachrome, X Professional, ASA 64, standard base

Film Exposure:

Over Exposed

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Width	Height	Annotated	Cropped	Links
5700 pixels	6000 pixels	No	No	Download Image Download Color Calibration Image for this Image
500 pixels	526 pixels	No	No	Download Image Download Color Calibration Image for this Image
640 pixels	480 pixels	No	No	Download Image

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Image Caption:
STS045-83-025: Marmore River, Amazonia Recent theory on the
famous issue of species diversity in Amazonia stresses river
behavior (in preference to ice-age refugia) as an explanation for
speciation in animals, fish and plant communities. Habitat des-
truction and nutrient resupply is most vigorous on river flood-
plains during floods of different return frequencies. In this
photograph an unusual series of flood-related Rsplay depositsS
(overbank sand sheets) have destroyed valley-bottom forest pro-
viding new soils for first-succession plants to colonize.