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File:ISS-30 Dust storm, White Sands National Monument, New Mexico.jpg

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English: A dust storm near the White Sands National Monument, New Mexico, USA is featured in this image photographed by an Expedition 30 crew member on the International Space Station.
  • Driven by winter winds from the southwest, white dust from the White Sands dune field (center) in New Mexico rises thousands of feet from the valley floor, up and over the snowy peaks of the Sacramento Mts. downwind (right).
  • White Sands National Monument lies in the 50 kilometers-wide Tularosa valley, between the dark rocks and forested slopes of the Sacramento Mts. and the San Andres Mts. (left center). The lower and warmer ridge line of the San Andres was without snow on this day. The striking black lava flows of the Carrizozo lava field also occupy the valley floor (top right). The darker tones of agriculture in the Rio Grande floodplain can be seen along the left margin of the image.
  • The length of the dust plumes in this photograph is more than 120 kilometers. The vigor of the winds on this day can be judged also from the fact that they are lifting the dust particles from the valley floor more than 1,200 meters over the mountains. Winds channel the dust through a low point on the Sacramento Mts., some 800 meters below the ridge crests to north and south (right).
  • The Moderate Resolution Imaging Spectroradiometer (MODIS) on the NASA Aqua satellite also captured a wider regional view of the extent of the plumes on the same day. In most parts of the world blowing dust is some shade of light brown or red. It is interesting to observe two colors of dust that contribute to this dust plume: redder dust from the local hillsides north of White Sands (seen by the small brown zone along the northern margin of the dust mass), and the white dust from the dune field.
  • The sand dunes of the Monument are white since they are composed of the mineral gypsum, a relatively rare dune-forming mineral. The gypsum is deposited during evaporation of mineral-rich waters in an ephemeral lake located in the western part of the Monument. Erosion of the deposits, together with wind transport, provides the granular material for the dunes.
  • The dunes' brilliance, especially contrasted against the nearby dark mountain slopes, makes the dunes easily identifiable at great distances by orbiting astronauts. The white speck of the dunes is even visible in images taken looking back at Earth by crews on the way to the moon.
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Source http://spaceflight.nasa.gov/gallery/images/station/crew-30/html/iss030e174652.html
Author NASA
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This image or video was catalogued by Johnson Space Center of the United States National Aeronautics and Space Administration (NASA) under Photo ID: ISS030-E-174652.

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This file is in the public domain in the United States because it was created by the Image Science & Analysis Laboratory, of the NASA Johnson Space Center. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA media use guidelines or Conditions of Use of Astronaut Photographs). Photo source: ISS030-E-174652.

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current16:07, 30 April 2012Thumbnail for version as of 16:07, 30 April 20124,288 × 2,848 (917 KB)Ras67 (talk | contribs){{Information |Description={{en|1=A dust storm near the White Sands National Monument, New Mexico, USA is featured in this image photographed by an Expedition 30 crew member on the International Space Station. * Driven by winter winds from the southwes...

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