INFRARED PHOTOS FOR DRAINAGE ANALYSIS

EARTH SCIENTISTS SEEM TO HAVE BEEN SLOW IN APPRECIATING THE VALUE OF SPECIAL-PURPOSE AIR PHOTOGRAPHY. IN THIS STUDY, MODIFIED INFRARED AND PANCHROMATIC AIR PHOTOS AT MEDIUM SCALES WERE COMPARED WITH REGARD TO THEIR EFFECTIVENESS IN REVEALING DRAINAGE NETWORKS IN A FORESTED AREA OF NEW BRUNSWICK, EASTERN CANADA. IT WS FOUND THAT THERE WAS MORE IMMEDIATE RECOGNITION OF WATER CHANNELS ON THE INFRARED PHOTOS, AND CONSIDERABLY MORE NETWORK DETAIL WAS DETECTED: 73 PERCENT COMPARED WITH 39 PERCENT FOR A SMALL SAMPLE OF FIRST-ORDER CHANNELS. FOR SMALL DRAINAGE BASINS RANGING FROM FIRST- TO FOURTH-ORDER, THE INFRARED PHOTOS IMPROVED CHANNEL DETECTION BY 37 PERCENT COMPARED WITH THE PANCHROMATIC PHOTOS. IN ADDITION, INFRARED PROVED MORE EFFECTIVE IN REVEALING SHALLOW CHANNELS THROUGH BAR COMPLEXES, IN IDENTIFYING SHALLOW EXPANSES OF WATER AND DELIMITING THEIR MARGINS, IN DIFFERENTIATING BETWEEN VEGETATED AND NON-VEGETATED POINT BARS, IN IDENTIFYING AQUATIC VEGETATION AND IN REVEALING WATERLOGGED SOILS. /AUTHOR/

  • Supplemental Notes:
    • Vol 37, No 10, PP 1031-1038, 4 FIG, 2 TAB, 14 REF
  • Authors:
    • Parry, J T
    • TURNER, H
  • Publication Date: 1971-10

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Filing Info

  • Accession Number: 00202944
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 20 1971 12:00AM