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  • 1
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    An analysis of Milwaukee county land use (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The identification and classification of urban and suburban phenomena through analysis of remotely-acquired sensor data can provide information of great potential value to many regional analysts. Such classifications, particularly those using spectral data obtained from satellites such as the first Earth Resources Technology Satellite (ERTS-1) orbited by NASA, allow rapid frequent and accurate general land use inventories that are of value in many types of spatial analyses. In this study, Milwaukee County, Wisconsin was classified into several broad land use categories on the basis of computer analysis of four bands of ERTS spectral data (ERTS Frame Number E1017-16093). Categories identified were: (1) road-central business district, (2) grass (green vegetation), (3) suburban, (4) wooded suburb, (5) heavy industry, (6) inner city, and (7) water. Overall, 90 percent accuracy was attained in classification of these urban land use categories.
    Keywords: GEOPHYSICS
    Type: NASA-CR-133643 , LARS-INFORM-NOTE-022773
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Effect of pore pressure on the velocity of compressional waves in low-porosity rocks. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The velocity V sub p of compressional waves has been measured in rock samples of low porosity to confining pressures P sub c of 2 kb for a number of different constant pore pressures P sub p. An effective pressure defined by P sub e = P sub c-nP sub p, n less than or equal to 1, is found to be the determining factor in the behavior of V sub p rather than an effective pressure defined simply by the differential pressure Delta P = P sub c-P sub p. As pore pressure increases at constant effective pressure, the value of n increases and approaches 1, but as effective pressure increases at constant pore pressure, the value of n decreases. These observations are consistent with Biot's theory of the propagation of elastic waves in a fluid-saturated porous solid.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 77; July 10
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Preparation of urban land use inventories by machine-processing of ERTS MSS data (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Spectral classes of urban phenomena identified from ERTS multispectral scanner data in Milwaukee included Surburban, Inner City, Industry, Grassy (open area), Road, Wooded Suburb, Water, Cloud, and Shadow. The Milwaukee spectral class statistics were used to classify the Chicago area, within the same ERTS frame, and similar results were achieved. In another ERTS frame, Marion County (Indianapolis) data were classified into similar classes. The Marion County ERTS study was supported by a land use classification of an area near downtown Indianapolis that utilized 12-band MSS data collected by aircraft from 3000 feet. The results of the ERTS analyses suggest that satellite data will be a useful tool for the urban planner for monitoring urban land use.
    Keywords: GEOPHYSICS
    Type: NASA-CR-131576 , LARS-022873
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Preparation of urban land use inventories by machine processing of ERTS MSS data (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Spectral classes of urban phenomena identified from Earth Resources Technology Satellite (ERTS) multispectral scanner data in Milwaukee included suburban inner city, industry, grassy (open area), road, wooded suburb, water cloud, and shadow. The Milwaukee spectral class statistics were used to classify the Chicago area, within the same ERTS frame, and similar results were achieved. In another ERTS frame, Marion County (Indianapolis) data were classified into similar classes. The Marion County ERTS study was supported by a land use classification of an area near downtown Indianapolis that utilized 12-band MSS data collected by aircraft from 3000 feet. The results of the ERTS analyses suggest that satellite data will be a useful tool for the urban planner for monitoring urban land use.
    Keywords: GEOPHYSICS
    Type: PAPER-L19 , NASA. Goddard Space Flight Center Symp. on Significant Results obtained from the ERTS-1, Vol. 1, Sect. A and B; p 1031-1039
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Preparation of Urban Land Use Inventories by Machine Processing of ERTS MSS Data (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Preparation of urban land use inventories by machine processing of ERTS-1 MSS data of Milwaukee County, Wisconsin and Marion County, Indiana and Chicago, Illinois
    Keywords: GEOPHYSICS
    Type: E73-10217 , PAPER-L19 , NASA. Goddard Space Flight Center Land Use and Mapping; p 112
    Format: text
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  • 6
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    Land use classification of Marion County, Indiana by spectral analysis of digitized satellite data (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Keywords: GEOPHYSICS
    Type: Conference on Machine processing of remotely sensed data; Oct 16, 1973 - Oct 18, 1973; West Lafayette, IN
    Format: text
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    NASA TECHNICAL REPORTS
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