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  • 1
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    Investigation of application of ERTS-A data to integrated state planning (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: There are no author-identified significant results in this report.
    Keywords: GEOPHYSICS
    Type: E73-10716 , NASA-CR-133216
    Format: application/pdf
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  • 2
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    Detecting tree moisture stress (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Day/night thermal IR imagery detection of moisture stress of girdled trees in upland forest
    Keywords: GEOPHYSICS
    Type: ; YAL SOCIETY (
    Format: text
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  • 3
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    Correlation of ERTS-1 and aircraft optical data with water quality parameters of Charlotte Amalie Harbor, St. Thomas, Virgin Islands (1973)
    In:  Other Sources
    Details
    Publication Date: 2016-03-07
    Description: The author has identified the following significant results. Attempts to correlate optical aircraft remote sensing of water quality with the optical data from the ERTS-1 satellite using calibrated imagery of Charlotte Amalie harbor, St. Thomas, Virgin Islands are reported. The harbor at Charlotte Amalie has a concentration of a number of factors affecting water quality: untreated sewage, land runoff, and sediment from navigation and dredging operations. Calibration procedures have been originated and applied to ERTS-1 and I2S camera imagery. The results indicate that the ERTS-1 and I2S imagery are correlated with optical in situ measurements of the harbor water. The aircraft green photographic and ERTS-1 MSS-4 bands have been found most suitable for monitoring the scattered light levels under the conditions of the investigation. The chemical parameters of the harbor water were found to be correlated to the optical properties for two stations investigated in detail. The biological properties of the harbor water (chlorophyll and carotenoids), correlate inversely with the optical data near the pollution sources compared to further away. Calibration procedures developed in this investigation were essential to the interpretation of the photographic and ERTS-1 photometric responses.
    Keywords: GEOPHYSICS
    Type: Grumman Ecosystems Corp. ERTS-1 Virgin Islands Expt. 589. Determine Boundaries of ERTS and Aircraft Data Within Which Useful Water Quality Information Can Be Obtained; 65 p
    Format: text
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  • 4
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    Aerial photography for sensing plant anomalies (1970)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Changes in the red tonal response of Kodak Ektrachrome Infrared Aero 8443 film (EIR) are often incorrectly attributed solely to variations in infrared light reflectance of plant leaves, when the primary influence is a difference in visible light reflectance induced by varying chlorophyll contents. Comparisons are made among aerial photographic images of high- and low-chlorophyll foliage. New growth, foot rot, and boron and chloride nutrient toxicites produce low-chlorophyll foliage, and EIR transparency images of light red or white compared with dark-red images of high-chlorophyll foliage. Deposits of the sooty mold fungus that subsists on the honeydew produced by brown soft scale insects, obscure the citrus leaves' green color. Infected trees appear as black images on EIR film transparencies compared with red images of healthy trees.
    Keywords: GEOPHYSICS
    Type: NASA. Manned Spacecraft Center 3d Ann. Earth Resources Program Rev., Vol. 2; 15 p
    Format: application/pdf
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  • 5
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    Assessment of the Impact of the California Water Project in Southern California (1971)
    In:  CASI
    Details
    Publication Date: 2014-09-09
    Description: As the California State Water Project progresses and enters operation, it is suggested that changes in land use which may be monitored and anlayzed by remote sensing techniques will follow suite. Progress in each of these areas of research and automated mapping techniques to monitor these changes is presented for two specific regions: (1) the Perris Valley surrounding the future Lake Perris; and (2) the Sheep Creek Fan-Mirage Basin area of the Mojave Desert.
    Keywords: GEOPHYSICS
    Type: An Integrated Study of Earth Resources in the State of Calif. Using Remote Sensing Tech.; 35 p
    Format: text
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  • 6
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    Skylight intensity, polarization and airglow measurements during the total solar eclipse of 30 May 1965. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Keywords: GEOPHYSICS
    Type: Journal of Atmospheric and Terrestrial Physics; 34; Sept
    Format: text
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  • 7
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    Brightness of forbidden O I lines and properties of shadow bands during the eclipse of 7 March 1970. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Results of two types of measurements made at a site in the center of the eclipse track during the total eclipse of Mar. 7, 1970. The O I forbidden 5577-A and 6300-A lines were measured looking vertically through the eclipse shadow. The intensities were approximately 1 kR, essentially the values obtained in recent rocket measurements of normal day airglow at altitudes above 100 km. This is consistent with the hypothesis that these lines originate primarily at altitudes well above the shadow from mechanisms which are not appreciably perturbed by the approaching shadow. Measurements were also made of the time variation of intensity of incident light during the shadow-band period before second contact. There are saw-tooth fluctuations with steep leading edges, as well as many high-frequency components of smaller amplitude. This time variation does not appear to be obviously related in a simple way to current theories of their production mechanisms, or to the visual appearance of shadow bands.
    Keywords: GEOPHYSICS
    Type: Journal of Atmospheric and Terrestrial Physics; 34; Apr. 197
    Format: text
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  • 8
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    Remote sensing and the pelagic fisheries environment off Oregon (1970)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Remote sensing oceanography at Oregon State University is part of a multidisciplinary research program: (1) to learn more about nearshore oceanographic processes and how they affect the production of marine life and the availability of albacore tuna; and (2) to provide fishermen with information in near real time that will be useful in scouting for albacore concentrations.
    Keywords: GEOPHYSICS
    Type: NASA. Manned Spacecraft Center 3d Ann. Earth Resources Program Rev., Vol. 3; 12 p
    Format: application/pdf
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  • 9
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    A study to explore the use of orbital remote sensing to determine native arid plant distribution (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: There are no author-identified significant results in this support.
    Keywords: GEOPHYSICS
    Type: E72-10159 , NASA-CR-128310
    Format: application/pdf
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  • 10
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    Remote sensing of changes in morphology and physiology of trees under stress (1970)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Results of continuing studies of forest trees subjected to varying types of stress are reported. Both greenhouse and field studies are included. Greenhouse work with tree seedlings exposed to varying levels of NaCl and CaCl2 in the soil indicated that, in the initial stages, palisade cells shrink and the amount of air space in the leaf increases. As the severity of damage increases, the cells of the spongy mesophyll shrink and flatten, and the amount of air space in the leaf decreases. Statistical analysis of foliar reflectance and associated moisture content data led to a series of regression equations for predicting foliar moisture content from reflectance data. Equations were calculated for three species, yellow birch (Betula alleghaniensis Britton), sugar maple (Acer saccharum Marsh.) and white ash (Fraxinus americana L.) having multiple correlation coefficients of 0.98, 0.94 and 0.93 respectively. Interpretation of multispectral imagery of the Ann Arbor Forestry Test Site (NASA Site 190) provided evidence that infections of Fomes annosus can be detected in the early stages. Infections of two needle cast diseases were also detected in conifer plantations in the test site. A study of automatic interpretation of multispectral scanner imagery for tree species recognition provided encouraging results.
    Keywords: GEOPHYSICS
    Type: NASA-CR-127420
    Format: application/pdf
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