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Census Cities experiment in urban change detectionThe author has identified the following significant results. Mapping of 1970 and 1972 land use from high-flight photography has been completed for all test sites: San Francisco, Washington, Phoenix, Tucson, Boston, New Haven, Cedar Rapids, and Pontiac. Area analysis of 1970 and 1972 land use has been completed for each of the mandatory urban areas. All 44 sections of the 1970 land use maps of the San Francisco test site have been officially released through USGS Open File at 1:62,500. Five thousand copies of the Washington one-sheet color 1970 land use map, census tract map, and point line identification map are being printed by USGS Publication Division. ERTS-1 imagery for each of the eight test sites is being received and analyzed. Color infrared photo enlargements at 1:100,000 of ERTS-1 MSS images of Phoenix taken on October 16, 1972 and May 2, 1973 are being analyzed to determine to what level land use and land use changes can be identified and to what extent the ERTS-1 imagery can be used in updating the 1970 aircraft photo-derived land use data base. Work is proceeding on the analysis of ERTS-1 imagery by computer manipulation of ERTS-1 MSS data in digital format. ERTS-1 CCT maps at 1:24,000 are being analyzed for two dates over Washington and Phoenix. Anniversary tape sets have been received at Purdue LARS for some additional urban test sites.
Document ID
19740011838
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Wray, J. R. (Geological Survey Reston, VA, United States)
Milazzo, V. A. (Geological Survey Reston, VA, United States)
Date Acquired
September 3, 2013
Publication Date
March 1, 1974
Subject Category
Geophysics
Report/Patent Number
NASA-CR-137276
E74-10417
Accession Number
74N19951
Funding Number(s)
CONTRACT_GRANT: NASA ORDER S-70243-AG-2
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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