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  • 1975-1979  (10)
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Year
  • 1
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    Unknown
    Skylab remote bathymetry experiment (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E76-10186 , NASA-CR-144482 , ERIM-102100-21-F
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Nearshore coastal mapping (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Two test sites of different water quality and bottom topography were used to test for maximum water depth penetration using the Skylab S-192 MSS for measurement of nearshore coastal bathymetry. Sites under investigation lie along the Lake Michigan coastline where littoral transport acts to erode sand bluffs and endangers developments along 1,200 miles of shore, and on the west coast of Puerto Rico where unreliable shoal location and depth information constitutes a safety hazard to navigation. The S-192 and S-190A and B provide data on underwater features because of water transparency in the blue/green portion of the spectrum. Depth of 20 meters were measured with the S-192 in the Puerto Rico test site. The S-190B photography with its improved spatial resolution clearly delineates the triple sand bar topography in the Lake Michigan test site. Several processing techniques were employed to test for maximum depth measurement with least error. The results are useful for helping to determine an optimum spectral bandwidth for future space sensors that will increase depth measurements for different water attenuation conditions where a bottom reflection is detectable.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: M-10 , NASA. Lyndon B. Johnson Space Center NASA Earth Resources Surv. Symp., Vol. 1-C; p 2075-2086
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    NASA/Cousteau ocean bathymetry experiment. Remote bathymetry using high gain LANDSAT data (1976)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Satellite remote bathymetry was varified to 22 m depths where water clarity was defined by alpha = .058 1/m and bottom reflection, r(b), was 26%. High gain band 4 and band 5 CCT data from LANDSAT 1 was used for a test site in the Bahama Islands and near Florida. Near Florida where alpha = .11 1/m and r(b) = 20%, depths to 10 m were verified. Depth accuracies within 10% rms were achieved. Position accuracies within one LANDSAT pixel were obtained by reference to the Transit navigation satellites. The Calypso and the Beayondan, two ships, were at anchor on each of the seven days during LANDSAT 1 and 2 overpasses: LORAN C position information was used when the ships were underway making depth transects. Results are expected to be useful for updating charts showing shoals hazardous to navigation or in monitoring changes in nearshore topography.
    Keywords: OCEANOGRAPHY
    Type: NASA-CR-156658 , ERIM-118500-1-F
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    An ERTS-1 investigation for Lake Ontario and its basin (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The author has identified the following significant results. Methods of manual, semi-automatic, and automatic (computer) data processing were evaluated, as were the requirements for spatial physiographic and limnological information. The coupling of specially processed ERTS data with simulation models of the watershed precipitation/runoff process provides potential for water resources management. Optimal and full use of the data requires a mix of data processing and analysis techniques, including single band editing, two band ratios, and multiband combinations. A combination of maximum likelihood ratio and near-IR/red band ratio processing was found to be particularly useful.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E75-10351 , NASA-CR-143153 , ERIM-19330-65-F
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    A Skylab program for the International Hydrological Decade (IHD) (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The author has identified the following significant results. Demonstration of the procedure for utilizing the model relating red and IR reflectance to surface soil moisture over regions of variable vegetation cover indicates that remote sensing may be able to make direct inputs into determination of this hydrologic parameter.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E75-10137 , NASA-CR-142063 , ERIM-102300-15-L
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Skylab: Water depth determination (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E75-10275 , NASA-CR-142684 , ERIM-102100-18-L
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Unknown
    Remote bathymetry and shoal detection with ERTS: ERTS water depth (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E75-10261 , NASA-CR-142636 , ERIM-193300-51-F
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Unknown
    A Skylab program for the International Hydrological Decade (IHD) (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E75-10185 , NASA-CR-142313 , ERIM-102300-16-L
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Unknown
    Skylab: Water depth determination (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E75-10179 , NASA-CR-142307 , ERIM-102100-17-L
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Analysis of hydrological features of portions of the Lake Ontario basin using Skylab and aircraft data (1976)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The author has identified the following significant results. S190A and S190B photography proved to be useful for mapping large scale geomorophological features, and for assessing water depth and water quality. Available S192 data were affected by low frequency noise caused by diode light. Hydrological features were classified, and upland green herbaceous vegetation was separated into several classes based on percent vegetation cover. A model for estimating surface soil moisture based on red and near infrared reflectance data was developed and subsequently implemented.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E76-10192 , NASA-CR-147456 , ERIM-102300-19-F
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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