LOW-SUN-ANGLE VERTICAL PHOTOGRAPHY VERSUS THERMAL INFRARED SCANNING IMAGERY

THE POSSIBILITY IS INVESTIGATED THAT LOW-SUN-ANGLE VERTICAL PHOTOGRAPHY MIGHT PROVIDE ZONAL CONTRASTS COMPARED TO THOSE ACHIEVED BY THERMAL INFRARED IMAGERY. THE AREA INVESTIGATED IS A DESERT AREA 8 MILES NORTHWEST OF A CITY; THE EASTERN HALF IS PART OF THE FLOOR OF A FORMER LAKE, IN THE WEST ARE LOW HILLS AND RIDGES NONE EXCEEDING 60 FEET IN HEIGHT. IT IS CONCLUDED THAT LOW-SUN-ANGLE VERTICAL PHOTOGRAPHY PRESENTS A WEALTH OF GEOLOGIC DETAIL EVEN IN FLATLAND AREAS. THE ADVANTAGES OVER THERMAL INFRARED SCANNING IMAGERY FOR GENERAL GEOLOGIC PURPOSES ARE: (1) THE HIGHER RESOLUTION RESULTING IN MUCH SHARPER DETAIL, (2) THE SHARPER TONAL CONTRASTS, (3) THE AVAILABILITY OF STEREOSCOPIC COVERAGE WITH ITS INESTIMABLE VALUE IN GEOLOGIC INTERPRETATION, AND (4) THE RELATIVELY LOW COST. FOR SPECIALIZED PURPOSES, HOWEVER, THERE IS NO SUBSTITUTE FOR THERMAL INFRARED SCANNING IMAGERY. FURTHERMORE, THERE MAY BE OBSCURE GEOLOGIC ENVIRONMENTS IN WHICH INFRARED IMAGERY WILL PROVIDE THE BULK OF USEFUL INFORMATION.

  • Supplemental Notes:
    • Vol 81, No 2, PP 521-523, 2 FIG, 1 REF
  • Authors:
    • Howard, A D
    • Marcado, J
  • Publication Date: 0

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  • Accession Number: 00229778
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 16 1970 12:00AM