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Photos: Satellites keep close watch on coral reefs

1 of 2 NEXT PREV
  • MODIS image

    MODIS image

    This MODIS (Moderate Resolution Imaging Spectroradiometer) image shows the location of coral bleaching at Heron Island within the Capricorn Bunker Group of the Great Barrier Reef. NASA's Terra and Aqua satellites monitor the reefs for surface temperature and color, and can post data online within three hours of passing over the reefs.

    Published: July 20, 2006 -- 15:58 GMT (08:58 PDT)

    Caption by: Bill Detwiler

  • Diver

    Diver

    Paul Marshall from the Great Barrier Reef marine park photographs bleached coral heads off the Keppel Islands in Queensland, Australia. An international network of more than 100 scientists is alarmed at the level of bleaching occuring worldwide.

    Rising ocean temperatures force out the algae that live in coral and give it its remarkable coloration. Scarla Weeks, a researcher at the University of Queenland, said, "Sea surface temperatures over the last five months are actually higher in certain locations now than they were in 2002 when we witnessed the worst bleaching incident to date."

    Published: July 20, 2006 -- 15:58 GMT (08:58 PDT)

    Caption by: Bill Detwiler

1 of 2 NEXT PREV
  • MODIS image
  • Diver

NASA satellites monitor Great Barrier Reef for signs of coral bleaching.

Read More Read Less

MODIS image

This MODIS (Moderate Resolution Imaging Spectroradiometer) image shows the location of coral bleaching at Heron Island within the Capricorn Bunker Group of the Great Barrier Reef. NASA's Terra and Aqua satellites monitor the reefs for surface temperature and color, and can post data online within three hours of passing over the reefs.

Published: July 20, 2006 -- 15:58 GMT (08:58 PDT)

Caption by: Bill Detwiler

1 of 2 NEXT PREV

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