[Skip to content]
ISS007-E-10797
Browse image
Resolutions offered for this image:
1005 x 768 pixels 540 x 413 pixels 540 x 452 pixels 1000 x 402 pixels 540 x 452 pixels 3032 x 2064 pixels 6144 x 4068 pixels 639 x 435 pixels

MAP LOCATION
latitude/longitude of image
Spacecraft nadir point: 13.1° S, 63.6° W

Photo center point: 15.0° S, 65.0° W

Nadir to Photo Center: Southwest

Spacecraft Altitude: 208 nautical miles (385km)
Click for Google map
IMAGE DETAILS
features and other details
CAMERA INFORMATION
information about camera used
ALL DOWNLOAD OPTIONS
additional formats
Width Height Annotated Cropped Purpose Download Image 
1005 pixels 768 pixels Photographic Highlights Download
540 pixels 413 pixels Photographic Highlights Download
540 pixels 452 pixels Yes Yes NASA's Earth Observatory web site Download
1000 pixels 402 pixels Yes No NASA's Earth Observatory web site Download
540 pixels 452 pixels Yes Yes NASA's Earth Observatory web site Download
3032 pixels 2064 pixels No No Download
6144 pixels 4068 pixels No No Presentation Download
639 pixels 435 pixels No No Download
Other options available:
Download Packaged File
Download a Google Earth KML for this Image
View photo footprint information
Image Caption: The Mamore River drains north from the Andes Mts. in lowland Bolivia. An image taken in July 2003 from the International Space Station (ISS007-E-10797, 14 June 2003, 12:36 GMT) shows an 85 km stretch of the river south of the lowland town of Trinidad in the Beni Province. A 55-km stretch (centered at 15.2degS 66degW) was rectified to the commercially available 1990 edition of the Landsat TM imagery of the world.

Numerous changes in river pattern are visible in the decade since the Landsat imagery was acquired. A pilot study was undertaken to characterize these rapid changes. Tie points were selected for geomorphic features which do not undergo short-term change- i. e. oxbow lakes and subsidence lakes in the floodplain. The ISS image was enhanced slightly to reveal the Mamore River channel.

The ISS image (top) shows Mamore River meandering in a floodplain with numerous contorted channel traces indicating former positions of the river. The darker areas are riverine forest, the lighter areas tropical savanna. The river trace as it was in 1990 (bottom) is superimposed on the 2003 handheld image.

Interpretation


  1. Meander cutoffs: In two locations, the Mamore has straightened its course by meander cutoff (c-upper image). The opposite trend appears to the north (right) where the course has become more sinuous.

  2. Some structural control, possibly by buried faults, appears to have maintained the position and straightness of the E-W stretch (EW).

  3. An old course has controlled the position of a sector of the new course: the radius of curvature of the northernmost meander is sharper than most bends because the new course has occupied a prior course (a-far right, upper image).

  4. Ten-fifteen years of river movement has had wider impacts on the valley floor:

    • two new lakes been formed where the large meanders have been cut off (n)

    • several lakes have decreased in size, especially two elongated lakes that have been reduced in length by more than 50% (s)

    • lakes have been destroyed entirely (x-lower figure)

    • many lakes are further from the main river and many closer: this nearness factor determines whether or not lakes receive nutrient rich inflow from the main river during floods. It is possible that these kinds of disturbances-the creation and destruction of habitat-may be a major cause of biodiversity generation in equatorial rainforests.