APPLICATION OF THERMAL IMAGERY TO THE DEVELOPMENT OF A GREAT LAKES ICE INFORMATION SYSTEM

Recent measurements and analysis have shown that thermal infrared imagery (wavelength, 8-14 microns) can be employed to delineate the relative thicknesses of various regions of freshwater ice, as well as, differentiate new ice from both open water areas and thicker (young)ice. Thermal imagery was observed to be generally superior to visual (0.4 - 0.7 microns) and our SLAR (3.3 cm) imagery for estimating relative ice thicknesses and delineating open water from new ice growth. In a real-time Great Lakes Ice Information System, thermal imagery can not only provide supplementary imagery but also aid in developing interpretative methods for all-weather SLAR imagery, as well as, establishing the areal extent of spot thickness measurements. (Author)

• Supplemental Notes:
  • Conf-Presented at the Interdisciplinary Symp. On Advanced Concepts and Tech. In the Study of Snow and Ice Resources, Monterey, Calif., 2-6 Dec. 1973.
• Corporate Authors:

  Lewis Research Center

  National Aeronautics and Space Administration
  Cleveland, OH  United States  44135
• Authors:
  • Schertler, R J
  • Raquet, C A
  • Svehla, R A
• Publication Date: 1973

Media Info

• Pagination: 11 p.

Subject/Index Terms

• TRT Terms: Ice; Information systems; Infrared detectors; Mapping; Side looking radar; Thickness
• Old TRIS Terms: Ice information systems; Ice mapping; Ice thickness
• Subject Areas: Data and Information Technology; Marine Transportation;

Filing Info

• Accession Number: 00053930
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NASA-TM-X-71478
• Files: TRIS
• Created Date: May 7 1974 12:00AM