Thursday, 10 June 2010

Maui (Valley Island) Hawaii - Spaceborne Radar Image (1994).



Cloud-penetrating spaceborne radar image (SIR-C radar) of Maui ("Valley Island"), Hawaii (1994).

Image Key:
  • Light blue & yellow areas - lowlands near the center are sugar cane fields.
  • Rain forests appear in yellow.
  • Grassland is shown in dark green, pink and blue.
  • 3 major population centers:
    • Lahaina on the left at the western tip of island.
    • Wailuku left of center.
    • Kihei in the lower center.
    • Appear as small yellow, white or purple mottled areas.
  • West Maui volcano, lower left, is 1800 meters high (5900 feet) and is considered extinct.
  • Entire eastern half of the island consists of East Maui volcano, which rises to an elevation of 3200 meters (10,500 feet) and has a crater called Haleakala at its summit.
  • Haleakala Crater was produced by erosion during the previous ice ages rather than by any volcanic activity.
Image Technical Details:
  • Image was acquired by Spaceborne Imaging Radar- C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) onboard the space shuttle Endeavour on April 16, 1994.
  • Image is 73.7 kilometers by 48.7 kilometers (45.7 miles by 30.2 miles).
  • Centered at 20.8 degrees North latitude, 156.4 degrees West longitude.
  • North is toward the upper left.
  • The colors are assigned to different radar frequencies and polarizations of the radar as follows:
    • Red - is L-band, horizontally transmitted and received.
    • Green - is C- band, horizontally transmitted and received.
    • Blue - is the difference of the C-band and L-band channels.
  • Image part of NASA's Mission to Planet Earth.
  • Image Credit - NASA Images (Public Domain)
Tags:
1994 - East Maui Volcano - Haleakala Crater - Hawaii - Maui - NASA - Radar - Space Shuttle Endeavour - Vegetation - Volcano - West Maui Volcano

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