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  • EARTH RESOURCES AND REMOTE SENSING  (3,646)
  • 1975-1979  (3,646)
  • 1955-1959
  • 1950-1954
  • 1935-1939
Collection
Keywords
Years
Year
  • 1
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    Data availability and the role of the earth resources observation systems data center (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: With the launch of LANDSAT-1 in July 1972, and the follow-on launch of LANDSAT-2 in January of this year, routine availability of satellite imagery and electronic data of the earth's resources has become a reality. Federal data centers provide LANDSAT data to resource managers and the general public. These data centers have to date provided almost 500,000 frames of LANDSAT data at a cost of more than $2,000,000. Data from the LANDSAT satellite program, along with data and information from the Skylab manned program, are available over any location to anyone for the cost of reproduction.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 372-378
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  • 2
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    Remote sensing in Minnesota: Evaluation of programs and current needs (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Aerial photographs of the entire state were used to develop information on geomorphic regions, land ownership, forest cover, soils, geology, land classification and land capability. LANDSAT imagery was included to update many photomaps for land use classification and urban development planning.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 340-350
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  • 3
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    Alaska's needs in remote sensing (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Joint Federal/State remote data sensing centers are advocated to help survey Alaska for land use planning by aerial photography and LANDSAT imagery. The centers are to provide satellite derived information in land use planning and offshore oil developments.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 315-318
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  • 4
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    The use of satellite data for regional planning (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The experience of the Ohio-Kentucky-Indiana Regional Council of Governments in its development of a regional land use inventory from computer processing of LANDSAT 1 digital tapes and the use of those data in the OKI water quality planning program are discussed. A major part of the planning program is the prediction of water quality in rivers and lakes resulting from existing and future land uses. A model has been developed that can predict the flow of sediment, total phosphorus, total nitrogen, and organic wastes into major streams. An essential input to this model is an accurate map of land use derived from LANDSAT 1 digital tapes.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 356-358
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  • 5
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    User requirements for project-oriented remote sensing (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Registration of remotely sensed data to geodetic coordinates provides for overlay analysis of land use data. For aerial photographs of a large area, differences in scales, dates, and film types are reconciled, and multispectral scanner data are machine registered at the time of acquisition.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 319-325
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  • 6
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    Oilspill surveillance, detection, and evaluation by remote sensing (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Aerial and fixed platform oil spill detection systems primarily utilize remote sensors for data acquisition and pollution monitoring purposes. In addition to aerial photography and infrared reflectance sensors, a laser backscatter sensor and an ultraviolet fluorescence sensor are considered for application in pollution surveillance systems.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 271-279
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  • 7
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    Remote measurement of shoreline changes in coastal Alabama (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: It is shown that remotely sensed data, whether in digital or imagery form, provide objective, systematic measurements of coastal zone characteristics when compared with traditional measurement techniques. An example is given for Alabama shoreline parameters using LANDSAT 1 composite mapping.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 224-231
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  • 8
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    South Louisiana remote-sensing environmental information system (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Satellite gathered remote sensor data were used to update a basic environmental atlas of southern Louisiana to reflect recent dynamic geological changes, such as erosion by wave action along the coast and active delta building in the lower part of the Mississippi Basin. Standard pattern recognition programs were utilized to update LANDSAT pictures for three categories (generalized land use, ecological zones and vegetation) to obtain a simulated color photomap for LANDSAT frames for further rectification by a table lookup program.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA Earth Resources Survey Symp., Vol. 2-B; p 217-223
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  • 9
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    Earth observations and photography experiment MA-136 (1976)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The primary objectives of the earth observations and photography experiment of the Apollo Soyuz Test Project were to photograph various terrestrial structures and to use the capabilities of man as a trained observer in visually studying earth features and phenomena. Man's special capabilities include the sensitivity of the eye to subtle color variations and the speed with which the eye/brain system can interpret what is seen and select targets for photography. Real time astronaut observations constitute a useful complement to orbital photographs and greatly aid in their interpretation. Targets for mapping and hand held photography were selected on the basis of their value to specialists in the earth sciences including geology, oceanography, desert study, hydrology, meteorology, and environmental science.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center Apollo-Soyuz Test Project; 64 p
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  • 10
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    Louisiana comprehensive planning information system (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: A statewide computerized land use mapping system is reported that uses polygons to identify inventories from aerial photography by employing the USGS classification system. In addition, the system provides soil, population, and housing census data as well as economic indicators that can be useful in relating to the overall system.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 326-339
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  • 11
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    Remote sensing in Arizona (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Orthophotoquads prepared from high altitude photography and LANDSAT imagery were utilized for land use mapping and urban development planning. LANDSAT imagery of rough terrains were evaluated by photographic projection on a viewer screen for enlargement of details.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 300-314
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  • 12
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    Status of coastal zone management techniques (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Remote panchromatic imagery was applied to develop a coastal zone management atlas that provides for land cover or vegetation surveys as well as land use stereographic mapping for regional planning purposes.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA Earth Resources Survey Symp., Vol. 2-B; p 173-175
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  • 13
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    Remote-sensing applications in the State of Mississippi (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: A computer derived land use classification scheme for infrared LANDSAT imagery was developed and applied to update existing Mississippi coastline data. Inventory classifications were accomplished by photographic enlargement and photointerpretations showing color coded resources on the ground.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 282-290
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  • 14
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    Remote-sensing applications as utilized in Florida's coastal zone management program (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Land use maps were developed from photomaps obtained by remote sensing in order to develop a comprehensive state plan for the protection, development, and zoning of coastal regions. Only photographic remote sensors have been used in support of the coastal council's planning/management methodology. Standard photointerpretation and cartographic application procedures for map compilation were used in preparing base maps.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 232-241
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  • 15
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    California nearshore surface currents (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: During the oceanic period from July to November, the southward flowing California current dominates the nearshore current patterns. Commencing about the middle of November and extending to mid-February, the Davidson current, a northward moving countercurrent, is the dominant inshore transporter of water and suspensates. The phenomenon of upwelling is prevalent during the period from the middle of February to the end of July. Thus, every year along the coast of California, there are three successive current seasons: the oceanic, the Davidson, and the upwelling. This paper is a discussion of the nature of these nearshore currents. In addition, the capabilities of various remote sensing platforms and systems for providing methods of monitoring the coastal processes associated with the current seasons of California are demonstrated herein.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 195-216
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  • 16
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    Information flow of land and water-related data in the State of Wisconsin (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Digital data from the infrared LANDSAT imagery were used to classify eutrophication levels of lakes in an effort to observe the effect of thermal discharges from power stations. LANDSAT data were also applied to identify and monitor wetlands, for soil surveys, sedimentation transport, and in general to assist in land use planning and resources management.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 291-296
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  • 17
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    Applications of remote-sensing technology to environmental problems of Delaware and Delaware Bay (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Digital processing of multispectral LANDSAT data was used to develop a computerized model for predicting oil slick movement within the Delaware Bay. LANDSAT imagery was also used to monitor offshore waste disposal sites for mapping of wetlands, and charting of tidal currents.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 188-194
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  • 18
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    Information needs: Perceived and real for state decisionmakers (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Remote sensing techniques provide important information for land and water use planning organizations in order to assess coastal developments and their impact on water resources, sediment transport, erosion, and marine biology. Political expediency requires pertinent data acquisition and data dissemination to local populations for coastal zone management decision making.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA Earth Resources Survey Symp., Vol. 2-B; p 176-187
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  • 19
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    Coast Guard/NOAA/NASA Great Lakes Project Icewarn (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The operational feasibility of using remote sensing to provide all weather ice formation for Great Lakes winter navigation is explored. A combination airborne pulsed radar system to measure actual ice thickness, a satellite data link system, and a hand drawn interpretive ice chart proved valuable for extending winter navigation through the icepack.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA Earth Resources Survey Symp., Vol. 2-B; p 261-270
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  • 20
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    Remote sensing in the State of Ohio. 1. Public policy. 2. System development (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Different types of satellite and conventional remote sensing data are used to monitor urban growth and the pattern of development. Software programs were developed for a growth allocation model that uses LANDSAT information as the basic component.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 351-355
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  • 21
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    Remote-sensing applications for Texas (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The earth resources remote sensing activity of Texas and its applications are reported. A combination of digital, photographic, and traditional methods is being used to manage the water impoundments inventory, a land use survey, a wildlife habitat survey, and a coastal zone survey.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 297-299
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  • 22
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    Estimate of procession and polar motion errors from planetary encounter station location solutions (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-16
    Description: Jet Propulsion Laboratory Deep Space Station (DSS) location solutions based on two JPL planetary ephemerides, DE 84 and DE 96, at eight planetary encounters were used to obtain weighted least squares estimates of precession and polar motion errors. The solution for precession error in right ascension yields a value of 0.3 X 10 to the minus 5 power plus or minus 0.8 X 10 to the minus 6 power deg/year. This maps to a right ascension error of 1.3 X 10 to the minus 5 power plus or minus 0.4 X 10 to the minus 5 power deg at the first Voyager 1979 Jupiter encounter if the current JPL DSS location set is used. Solutions for precession and polar motion using station locations based on DE 84 agree well with the solution using station locations referenced to DE 96. The precession solution removes the apparent drift in station longitude and spin axis distance estimates, while the encounter polar motion solutions consistently decrease the scatter in station spin axis distance estimates.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: The Deep Space Network; p 29-49
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  • 23
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    Remote sensing, a sketch of the technology (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Information is provided on how a potential user of remote sensing technology can gain access to all of the products and services he will need to get started. It was envisioned that these include data, training, hardware, and software. A very brief tutorial summary of the fundamentals of the technology is presented.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 367-370
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  • 24
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    Policy implications in developing a land use management information systems (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: The current land use map for the city of Los Angeles was developed by the guesstimation process and provides single stage information for each level in the critical geographical hierarchy for land use planning management. Processing and incorporation of LANDSAT data in the land use information system requires special funding; however, computergraphic maps are able to provide a viable information system for city planning and management.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-B; p 359-365
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  • 25
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    Information/user services, summary (1975)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Various aspects of the technology which are available to users now are described. Specific topics discussed include: data distribution: availability of and access to data; technology transfer: system use illustrations and availability of training; hardware systems descriptions: processing hardware constructed and available; data processing techniques: individual processing techniques; and future developments: a sampling of future technology.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-A; p 123-127
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  • 26
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    The Large Area Crop Inventory Experiment (LACIE). Part 2: Yield estimates from meteorological information (1975)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Crop-weather models developed for wheat from an assembled base of approximately 45 years of climatic records and historic wheat yield and production data at the stratum level are described. Utilization of meteorological data acquired by the NOAA satellites is discussed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-A; p 63-65
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  • 27
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    Department of the Interior program (1975)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: The remote sensing activities of the Department of Interior are summarized. The use of satellite imagery in land and water management is described. Specific topics discussed include: land use mapping, exploration and discovery of metal, oil, and gas deposits, location of geological faults, and repetitive monitoring of dynamic environmental phenomena related to water resources.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-A; p 33-36
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  • 28
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    Lack of agreement over the use and ownership of the internationally shared resources (such as air space, outer space and the oceans) leading to international conflict (1975)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: The lack of adequate institutional mechanisms to regulate, monitor and govern the use of commonly owned world resources appears to be politically destabilizing and subject to socioeconomic pressures of overpopulation, food shortages, cartelism, terrorism, and wealth distribution to developing countries. The capacity and propensity to wage war and its potential consequences are elaborated. It is shown that technology is one of the dominant factors affecting the exploration and management of commonly shared resources.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: The Future Environment; 29 p
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  • 29
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    Applications of ERTS imagery to mappings sediments of the Twin Cities Metropolitan area (1975)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: ERTS images were compared to surficial geologic maps, prepared through traditional field studies. Lithologic boundaries, bedrock outcrops, bedrock structures, and geomorphologic features were examined. An area southeast of the Twin Cities, located chiefly in northern Dakota County was studied, as well as the New Brighton 15-minute quadrangle located in portions of Ramsey and Anoka Counties. Visual comparison of geologic maps and ERTS imagery demonstrated the limitations of this approach to geological investigations. Bedrock outcrops and bedrock structure in the metropolitan area do not appear on ERTS imagery. However, certain glacial sediments can be identified and are potentially mappable. Certain geomorphological features were also discernable.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Minn. Univ. A study of Minn. Forests and Lakes using Data from Earth Resources Technol. Satellites; 30 p
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  • 30
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    Remote sensing applications to hydrology in Minnesota (1975)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Development of low lying southeastern shore of Pike Lake is described as part of the Rice Creek watershed study. Several small wetlands in Arden Hills, Minnesota were incorporated into the drainage plans as pollutant and nutrient sinks rather than being infilled. Lake water quality in the St. Paul-Minneapolis metropolitan area was analyzed using Landsat images. In the same urban area, the inventory and seasonal change of the open water were also studied.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: A Study of Minn. Forests and Lakes using Data from Earth Resources Technol. Satellites; 66 p
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  • 31
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    The utility of surface temperature measurements for the remote sensing of surface soil water status (1975)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Experiments carried out on an Avondale loam soil indicated that the thermal inertia concept of soil water content detection is reasonably sound. The volumetric water contents of surface soil layers between 2 and 4 cm thick were found to be linear functions of the amplitude of the diurnal surface soil temperature wave for clear day-night periods. They were also found to be linear functions of the daily maximum value of the surface soil-air-temperature differential. Tests on three additional soils ranging from sandy loam to clay indicated that the relations determined for Avondale loam could not be accurately applied to these other soil types. When the moisture characteristic curves of each soil were used to transform water contents into pressure potentials, however, it was found that soil water pressure potential could be determined without prior knowledge of soil type, and thus its value as a potential soil water status survey tool was significantly enhanced.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Journal of Geophysical Research; 80; July 20
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  • 32
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    Rare earth and trace element geochemistry of metabasalts from the Point Sal ophiolite, California (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Earth and Planetary Science Letters; 37; 2, De; Dec. 197
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  • 33
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    Pattern recognition of Landsat data based upon temporal trend analysis (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: The Delta Classifier defined as an agricultural crop classification scheme employing a temporal trend procedure is applied to more than 100 different Landsat data sets collected during the 1974-1975 growing season throughout the major wheat-producing regions of the United States. The classification approach stresses examination of temporal trends of the Landsat mean vectors of crops in the absence of corresponding ground truth information. It is shown that the resulting classifications compare favorably to ground truth estimates for wheat proportion in those cases where ground truth is available, and that the temporal trend procedure yields estimates of the wheat proportion that are comparable to the best results from maximum likelihood classification with photointerpreter-defined training fields.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Remote Sensing of Environment; 6; 4, 19; 1977
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  • 34
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    Landsat inventory of surface-mined areas using extendable digital techniques (1975)
    In:  Other Sources
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    Publication Date: 2011-08-18
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Army Eng. Topographic Labs. Workshop for Environmental Applications of Multispectral Imagery; p 253-272
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  • 35
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    Computer mapping of Landsat data for environmental applications (1975)
    In:  Other Sources
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    Publication Date: 2011-08-18
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Army Eng. Topographic Labs. Workshop for Environmental Applications of Multispectral Imagery; p 118-134
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  • 36
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    Geodetic measurements on the ocean (1977)
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    Publication Date: 2011-08-17
    Description: This paper covers the topic of marine geodesy, its goals, and applications. Specifically discussed are position determination and establishment of geodetic control on the ocean bottom, ocean surface, and subsurface, and the determination of the geoid, a vertical reference surface. The various techniques used in position determination (including satellite, airborne, radio, inertial and acoustic techniques) are assessed in terms of accuracy, coverage, and contribution to the solution of specific problems associated with position and control. The results of several marine geodetic control experiments are presented. Classical techniques for the determination of the geoid are discussed and assessed, as are new techniques such as satellite altimetry. The outlook for marine geodetic measurements in the ocean is outlined in terms of what is being planned or considered for the next decade, and several recommendations are made.
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    Simultaneous crystallization of feldspar intergrowths from the melt (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: American Mineralogist; 62; 1977
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  • 38
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    Remote sensing techniques applied to multispectral recognition of the Aranjuez pilot zone (1977)
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    Publication Date: 2011-08-17
    Description: A rectangular (7 x 14 km) area 40 km S of Madrid was remote-sensed with a three-stage recognition process. Ground truth was established in the first phase, airborne sensing with a multispectral scanner and photographic cameras were used in the second phase, and Landsat satellite data were obtained in the third phase. Agronomic and hydrological photointerpretation problems are discussed. Color, black/white, and labeled areas are displayed for crop recognition in the land-use survey; turbidity, concentrations of pollutants and natural chemicals, and densitometry of the water are considered in the evaluation of water resources.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: IAA/Ingenieria Aeronautica y Astronautica; 29; Mar. 197
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  • 39
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    The measurements of latitude, time, and height variations at a single laser tracking station (1977)
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    Publication Date: 2011-08-17
    Description: Recent analysis of laser data for determining variation of latitude have been based on apparent variations in the orbital inclination of the satellite derived from short orbital arcs of 6-8 hours. An alternative method, based on the daily adjustment of the station position to a much longer arc of 2 or 3 weeks has recently been developed and tested. In the new method a long orbital arc is derived from many days of data and is subsequently used as a reference orbit for the adjustment of the position of the station (only) on each day of the long arc for which tracking data are available. This new technique appears to give slightly better results when it is applied to a test period in August 1970, with the added advantage that earth rotation measurements can be derived from the same data at the same time. The results for the test period indicate a precision of 74 cm in variation of latitude and 0.81 ms in monitoring the earth's rotation with 6 hours of data.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Journal of Geophysical Research; 82; Feb. 10
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  • 40
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    Earth-atmosphere system and surface reflectivities in arid regions from Landsat MSS data (1976)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Previously developed programs for computing atmospheric transmission and scattering of the solar radiation are used to compute the ratios of the earth-atmosphere system (space) directional reflectivities in the nadir direction to the surface Lambertian reflectivity, for the four bands of the Landsat multispectral scanner (MSS). These ratios are presented as graphs for two water vapor levels, as a function of the surface reflectivity, for various sun elevation angles. Space directional reflectivities in the vertical direction are reported for selected arid regions in Asia, Africa, and Central America from the spectral radiance levels measured by the Landsat MSS. From these space reflectivities, surface reflectivities are computed applying the pertinent graphs. These surface reflectivities are used to estimate the surface albedo for the entire solar spectrum. The estimated albedos are in the range 0.34-0.52, higher than the values reported by most previous researchers from space measurements, but are consistent with laboratory and in situ measurements.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Remote Sensing of Environment; 5; 4, 19; 1976
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  • 41
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    The impact of earth resources exploration from space (1976)
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    Publication Date: 2011-08-17
    Description: Remote sensing of the earth from satellite systems such as Landsat, Nimbus, and Skylab has demonstrated the potential influence of such observations on a number of major human concerns. These concerns include the management of food, water and fiber resources, the exploration and management of mineral and energy resources, the protection of the environment, the protection of life and property, and improvements in shipping and navigation.
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  • 42
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    Thermographic mosaic of Yellowstone National Park (1976)
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    Publication Date: 2011-08-17
    Description: An uncontrolled aerial thermographic mosaic of Yellowstone National Park was assembled from the videotape record of 13 individual thermographs obtained with linescan radiometers. Post mission processing of the videotape record rectified the nadir line to a topographic map base, corrected for v/h variations in adjacent flight lanes, corrected for yaw and pitch distortions, and distortions produced by nonlinearity of the side-wise scan. One of the purposes of the thermographic study was to delineate the areas of thermal emission (hot springs, geysers, etc.) throughout the Park, a study which could have great value in reconnaissance surveys of geothermal areas in remote regions or regions of high relief.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Photogrammetric Engineering and Remote Sensing; 42; Oct. 197
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  • 43
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    Satellite measurement of mass of Sahara dust in the atmosphere (1976)
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    Publication Date: 2011-08-16
    Description: Landsat 1 measurements of nadir radiance are used to obtain the mass of particulates in a vertical column of dust from the Sahara Desert. A radiative transfer model, constructed with knowledge of a few values of optical parameters measured from a ship, is developed to account for the measured radiance values. Measurement and model accuracies are discussed. It is found that the mass of particulates with smaller than a 10 micron radius in a vertical column is 1.6 g/sq m.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Applied Optics; 15; Oct. 197
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  • 44
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    All you ever wanted to know about remote sensing (1975)
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    Publication Date: 2011-08-16
    Description: A brief review of remote sensing state-of-the-art is presented. Emphasis is placed on an understanding of remote sensing terminology. Passive and active sensors and sensor platforms from the spacecraft program to the ground truth program are described.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA Earth Resources Survey Symp., Vol. 2-A; p 11-28
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  • 45
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    Regional inventories and mapping of land resources and environmental geology using remotely sensed data (1975)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Black-and-white stereoscopic aerial photographs at a scale of 1:20,000, 1:40,000, and 1:65,000 and controlled aerial photo mosaics at a scale of 1:24,000 were the basic data utilized for most mapping. Color and color infrared aerial photography (1:20,000) was employed to man the barrier islands, and color infrared photography (1:120,000) was used to map sand and mud units of the coastal plain north of Houston. LANDSAT-1 imagery in Bands 4, 5, and 7 (1:250,000) was utilized to examine land use and certain resource units statewide. Side scanning radar and LANDSAT imagery were studied experimentally toward mapping land suitability units in carbonate terranes with high relief and certain other terranes. Large-scale color and color infrared aerial stereoscopic photographs supply the most information for regional mapping. black-and-white photography is the most practical data for mapping because of scale, complete coverage, availability, and relatively low cost.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Surv. Symp., Vol. 1-B; p 1029-1057
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  • 46
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    Multispectral sensing of citrus young tree decline (1975)
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    Publication Date: 2011-08-16
    Description: Computer processing of MSS data to identify and map citrus trees affected by young tree decline is analyzed. The data were obtained at 1500-feet altitude in six discrete spectral bands covering regions from 0.53 to 1.3 millimicrons as well as from instrumental ground truths of tree crowns. Measurable spectral reflectance intensity differences are observed in the leaves of healthy and diseased trees, especially at wavelengths of 500 to 600 nm and 700 to 800 nm. The overall accuracy of the method is found to be 89%.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Photogrammetric Engineering and Remote Sensing; 41; May 1975
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  • 47
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    Earth resources satellite systems for flood monitoring (1975)
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    Publication Date: 2011-08-16
    Description: The environmental satellites NOAA-2 and ERTS-1 observed flooding in United States' rivers such as the Mississippi during 1973. Combination of NOAA-2 observation frequency and the ERTS-1 resolution provides an adequate satellite system for monitoring floods. Several polar-orbiting satellites of the ERTS type could view flooded areas at a reasonably high resolution every three to five days. A high-resolution earth-synchronous satellite would further enhance flood mapping by providing observations whenever clouds are absent.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Geophysical Research Letters; 2; Apr. 197
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  • 48
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    Earth observations (1975)
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    Publication Date: 2011-08-16
    Description: The development of the Earth Resources Technology Satellites for making earth observations from space is discussed. The programmatic elements of the ERTS program are defined. The specific results of the program which are considered are as follows: (1) analysis of snowmelt runoff, (2) analysis of Mississippi River floods of 1973, (3) global ice surveys with an electrically scanning microwave radiometer, (4) the microwave signature of snow fields, (5) analysis of strip mining activities, (6) sea surface studies using microwave techniques during the Bering Sea experiment, (7) cloud types and measurement of rainfall, and (8) performance of various remote sensors.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Significant Accomplishments in Sci. and Technol.; p 179-233
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  • 49
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    EPA requirements and programs (1975)
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    Publication Date: 2011-08-16
    Description: The proposed ERTS-DCS system is designed to allow EPA the capability to evaluate, through demonstrable hardware, the effectiveness of automated data collection techniques. The total effectiveness of any system is dependent upon many factors which include equipment cost, installation, maintainability, logistic support, growth potential, flexibility and failure rate. This can best be accomplished by installing the system at an operational environmental control agency (CAMP station) to insure that valid data is being obtained and processed. Consequently, it is imperative that the equipment interface must not compromise the validity of the sensor data nor should the experimental system effect the present operations of the CAMP station. Since both the system which is presently in use and the automatic system would be in operation in parallel, conformation and comparison are readily obtained.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Wallops Station Data Collection System; p 115-120
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  • 50
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    USDI requirements and programs (1975)
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    Publication Date: 2011-08-16
    Description: Interior Department plans for the utilization of data collection systems such as the one on ERTS-1 and others scheduled for future use are very briefly discussed. The savings offerred in manpower, acquisition and dissemination of useful data, and the operational potential of data collection systems are described.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Wallops Station Data Collection System; p 101-104
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  • 51
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    NOAA requirements and programs (1975)
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    Publication Date: 2011-08-16
    Description: Service programs in NOAA that contemplate using the Geostationary Operational Environmental Satellite (GEOS) Data Collection System (DCS) are considered. The GEOS DCS will be operated by the National Environmental Satellite Service of NOAA as an integral part of the national operation environmental satellite program. This plan is concerned with that part of the GEOS program connected with collection and relay of data from remote locations. Service programs include: (1) hydrological data collection; (2) oceanographic data collection; (3) marine observations from data buoys; (4) Tsunami warning service; and (5) meteorological service.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Wallops Station Data Collection System; p 107-114
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  • 52
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    US Army Corps of Engineers requirements and programs (1975)
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    Publication Date: 2011-08-16
    Description: Plans by the Corps of Engineers to utilize data collection systems to support their mission of development, utilization, and conservation of the water resources of the Nation, flood control, water management, hydroelectric power, maintenance of navigable waterways, reservoir construction, and river basin control are briefly addressed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Wallops Station Data Collection System; p 105-106
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  • 53
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    A summary of ERTS-1 data collection system applications (1975)
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    Publication Date: 2011-08-16
    Description: Geographically, applications were made over nearly the entire area where direct readout could be accomplished using the data acquisition stations in the ERTS-1 system. The extreme areas included Iceland, the Canadian Arctic, Alaska, Hawaii and Central America. In the discipline sense the majority of applications were in the water resources area with other applications being formally and informally reported in meteorology, oceanography, volcano surveillance and forestry. Installation and maintenance of the data collection platforms, as is true with nearly all new systems, was not accomplished without difficulty. On the whole, however, it has gone well enough so that it is agreed that it is a system which is amenable to installation in a variety of physical situations and the installation is accomplished with an ease commensurate with eventual use in an operational system.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Data Collection System; p 97-100
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  • 54
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    Space data relay systems (1975)
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    Publication Date: 2011-08-16
    Description: Significant progress has been achieved in simplifying platform concepts through random access techniques. This is particularly important in applications such as balloons where weight is critical. In applications, where weight restriction may not be a problem, the concept lends itself to uncomplicated designs and low cost. Nevertheless, ordered systems offer inherent advantages in managing data flow which justifies their use. With continuing improvements in technology, particularly low power receivers, ordered systems should become quite competitive with random systems for many applications.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Data Collection System; p 73-82
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  • 55
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    ERTS-1 data collection system: Status and performance (1975)
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    Publication Date: 2011-08-16
    Description: The Data Collection System flown on the first Earth Resources Technology Satellite (ERTS-1) relays earth resources data from remotely located in-situ sensors to Goddard Space Flight Center. Data is received at Goddard at least twice each day from every sensor installation and is distributed to users (who operate the sensors and transmitters) by mail and teletype. The system consists of a data formatting and transmitting unit, called the Data Collection Platform (DCP), a receiver and a retransmitter aboard ERTS-1; and receiving, demodulating and decoding equipment located at the Goldstone, California and Goddard data acquisition stations. Data is transmitted from the data acquisition stations to the ERTS Control Center at Goddard, then to the NASA (ERTS) Data Processing Facility (NDPF) where it is processed and distributed to users. Experience to date indicates that the design of the ERTS-1 Data Collection System is adequate for operational use for 50% of the users and, with minor modifications, could meet the requirements of 75%. Some users will have to augment the system by other data collection techniques to meet their operational requirements.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Data Collection System; p 83-96
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  • 56
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    Auxiliary DCP data acquisition system (1975)
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    Publication Date: 2011-08-16
    Description: An airborne DCP Data Aquisition System has been designed to augment the ERTS satellite data recovery system. The DCP's are data collection platforms located at pertinent sites. With the appropriate sensors they are able to collect, digitally encode and transmit environmental parameters to the ERTS satellite. The satellite in turn relays these transmissions to a ground station for processing. The satellite is available for such relay duty a minimum of two times in a 24-hour period. The equipment is to obtain continuous DCP data during periods of unusual environmental activity--storms, floods, etc. Two circumstances contributed to the decision to design such a system; (1) Wallops Station utilizes surveillance aircraft in support of rocket launches and also in support of earth resources activities; (2) the area in which Wallops is located, the Delaware and Chesapeake Bay areas, are fertile areas for DCP usage. Therefore, by developing an airborne DCP receiving station and installing it on aircraft more continuous DCP data can be provided from sites in the surrounding areas at relatively low cost.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Data Collection System; p 65-72
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  • 57
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    ERTS-1 DCS technical support provided by Wallops Station (1975)
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    Publication Date: 2011-08-16
    Description: Wallops Station accepted the tasks of providing ground truth to several ERTS investigators, operating a DCP repair depot, designing and building an airborne DCP Data Acquisition System, and providing aircraft underflight support for several other investigators. Additionally, the data bank is generally available for use by ERTS and other investigators that have a scientific interest in data pertaining to the Chesapeake Bay area. Working with DCS has provided a means of evaluating the system as a data collection device possibly applicable to ongoing Earth Resources Program activities in the Chesapeake Bay area as well as providing useful data and services to other ERTS investigators. The two areas of technical support provided by Wallops, ground truth stations and repair for DCPs, are briefly discussed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Data Collection System; p 53-56
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  • 58
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    Performance of the ERTS-1 DCS in a prototype volcano surveillance system (1975)
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    Publication Date: 2011-08-16
    Description: A prototype volcano surveillance system has been installed on 15 volcanoes in four states and four countries. The need for this system, the techniques used, the method of implementation, the major problems, the results, and the future seen for such a system are briefly reviewed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Wallops Station Data Collection System; p 31-44
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    USDI DCS technical support: Mississippi Test Facility (1975)
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    Publication Date: 2011-08-16
    Description: The objective of the technical support effort is to provide hardware and data processing support to DCS users so that application of the system may be simply and effectively implemented. Technical support at Mississippi Test Facility (MTF) is concerned primarily with on-site hardware. The first objective of the DCP hardware support was to assure that standard measuring apparatus and techniques used by the USGS could be adapted to the DCS. The second objective was to try to standardize the miscellaneous variety of parameters into a standard instrument set. The third objective was to provide the necessary accessories to simplify the use and complement the capabilities of the DCP. The standard USGS sites have been interfaced and are presently operating. These sites are stream gauge, ground water level and line operated quality of water. Evapotranspiration, meteorological and battery operated quality of water sites are planned for near future DCP operation. Three accessories which are under test or development are the Chu antenna, solar power supply and add-on memory. The DCP has proven to be relatively easy to interface with many monitors. The large antenna is awkward to install and transport. The DCS has met the original requirements well; it has and is proving that an operation, satellite-based data collection system is feasible.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Wallops Station Data Collection System; p 57-64
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  • 60
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    Use of ERTS-1 DCS in the management and control of water resources systems (1975)
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    Publication Date: 2011-08-16
    Description: The ERTS-1 experimental hydrologic Data Collection Platform System that has been established at the New England Division (NED), the reasons for getting involved with the experiment, some of the initial problems associated with the data collection hardware, and a preliminary conclusion based on operating experiences are reviewed. The New England Region includes the states of Maine, New Hampshire, Vermont, Massachusetts, Rhode Island and Connecticut. The entire area consists of approximately 97,000 sq. km. (60,000 square miles), half of which is in the state of Maine. The limits of the NED are all of Maine, New Hampshire and Vermont to the western limits of the Connecticut River basin, Massachusetts, Connecticut to the western edge of the Housatonic River basin and Rhode Island. All reservoirs have flood control as a primary purpose. Other uses include water supply, recreation and low flow augmentation. However, none of the reservoirs are presently operated for hydroelectric power, navigation, or irrigation purposes. Basically then, flood control regulation is NED's primary concern.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Wallops Station Data Collection System; p 45-52
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    Mobile data buoy system (1975)
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    Publication Date: 2011-08-16
    Description: The Mobile Data Buoy System was conceived to serve the users requirement for obtaining water quality parameters from two separate watershed systems. In view of the cost constraints of the ERTS program it was obvious that the network of 10 sampling stations required could not be of the fixed installation type; therefore, it was decided to go to a system of battery powered buoys of a size that could be used in one watershed system for a period of time and then moved to another by use of a relatively small 6.7 m (22 foot) boat. The basic idea of the water quality measurement program was to establish the water quality pattern of change from the headwaters of the watersheds to and through the Mobile Bay. This would allow the investigator to develop a good picture of the state's major water resources and the pressures from pollution that are being imposed. At this point in deployment of this mobile system of buoys, it is too early to put a quantitative value on the system, however it appears less expensive than known fixed installations as to first cost. It has a basic advantage in that it can be moved, at very little expense, to alternate sites where it is desired to obtain water quality data. It is to be noted this buoy system which covers a 80 Km (50 mile) stretch of the Black Warrior River and then skips down 483 Km (300 miles) to Mobile Bay for the next measurements would not be feasible unless there is a satellite to collect and relay the data.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Data Collection System; p 21-30
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  • 62
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    Data retransmission from water survey of Canada gauging stations using the ERTS data collection system (1975)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Nine sites were selected for installation of Data Collection Platforms (DCPs) with the objective of obtaining one near real time water level reading a day from each site. Also the dependability, costs and other aspects of the system could be studied and decisions made with respect to the feasibility of operating a much larger network of DCPs. The number of transmissions received each day from the gauging stations varies from a maximum of 26 to 12 and a minimum of 10 to 3, depending on the location. Quality checks of data have indicated that the data are good. None of the nine DCPs have failed once they have been successfully activated. The experience with the ERTS data collection system has been excellent. The DCP appears to be a rugged, reliable piece of equipment. The ones installed at water survey sites have withstood temperatures less than -40 C and the antennas have withstood wind speeds of over 80 kph (50 mph) and snow loads of 0.6 m (2 ft).
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Wallops Station Data Collection System; p 17-20
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  • 63
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    The use of Earth Resources Technology Satellite for relaying hydrologic data in the Delaware River basin (1975)
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    Publication Date: 2011-08-16
    Description: The earth resources data acquisition systems on ERTS are providing data from the earth's surface that have great potential for resources management. The Data Collection System is providing water resources data several times a day from widely scattered locations in the Delaware River Basin. Within the constraints of an experimental test, the data are being processed and released to water resources agencies in near-real time. The results of ERTS investigations have shown that there is a potential application for satellite-borne systems for earth resources data acquisition. It is becoming clear that the solutions to many natural resource problems can be found faster and more efficiently with the help of data acquisition systems such as those on the ERTS observatory. Under operational conditions, low cost battery-operated DCP's could provide the Geological Survey with data from a large number of field instruments. These data could be used by the Geological Survey to monitor the operational status of field instrumentation and could be used by cooperating agencies to monitor a wide range of earth resources conditions. Under operational conditions, the data flow could be in real time. The delay from time of data acquisition by ERTS to the time of data availability to data users could be reduced to seconds, rather than the present lag time of a few hours.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Wallops Station Data Collection System; p 5-16
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  • 64
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    Antarctic topography from balloons (1977)
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    Publication Date: 2011-08-17
    Description: A description is presented of an investigation involving the collection of Antarctic ice sheet surface topography data by means of balloons, floating at an altitude of about 12.5 km, which traversed the Antarctic during its 1975 summer. These balloons were part of 411 constant density balloons launched in the Southern Hemisphere during the Tropical Wind, Energy conversion and Reference Level Experiment. The three sensors carried by each balloon included a radio altimeter, a pressure sensor, and an ambient temperature sensor. Data transmitted by a balloon are received by a measuring system on board the Nimbus-6 satellite. A synoptic map is presented of the 150 mbar pressure surface at 1200 GMT, December 11, 1975.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Nature; 268; Aug. 11
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    Rare accessory uraninite in a Sierran granite (1977)
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    Publication Date: 2011-08-17
    Description: One grain of uraninite was found in a single thin-section of Sierran granite. Electron and ion microprobe analysis were used to determine the composition. Since the U-Pb age calculated for the uraninite does not differ greatly from the K-Ar age of the unit in which it occurs, it is suggested that the mineral is primary and not reworked from a preexisting rock. No uraninite has been detected in heavy mineral concentrates from other rocks of the local area.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: American Mineralogist; 62; 1977
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    Flooding of Monroe County, Michigan - A comparison of three remote sensor data sets (1976)
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    Publication Date: 2011-08-17
    Description: During the spring of 1973, three techniques were used to obtain remotely sensed data pertaining to the flooded shoreline of Monroe County, Michigan. Although digitized data from the Earth Resources Technology Satellite were available on magnetic tapes, analysis was based on interpretation methods normally used for aerial photography, since the black and white IR photography and side-looking airborne radar (SLAR) data were available only as images. Using IR photography as the standard, it was found that ERTS-1 Band 7 imagery had a 93% accuracy in detecting areas in the combined category of open water and flooded fields. X(HH) data from SLAR detected that built-up and wet areas were built-up (89 to 100% accuracy), but not that they were wet. It is suggested that these two sensors used in concert from orbital heights could provide information useful to relief organizations in flooded areas. It is considered likely that SLAR data will improve as higher resolution becomes available.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Michigan Academician; 8; Spring 1
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    Don't waste waterweeds (1976)
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    Publication Date: 2011-08-16
    Description: Experiments carried out at the NASA National Space Technology Laboratories indicate that water hyacinths can absorb organic chemicals, heavy metals, nutrients, and other materials from waste water while producing large quantities of biomass, which can be used to produce a gas containing 60-80% methane. When grown in sewage free of toxic materials, the biomass can be used as a potential source of fertilizer or animal feed supplements. The use of hot water from nuclear power plants to grow water hyacinths during the winter months is particularly attractive, since the hyacinths could act as an added safety filtration system for the removal of radioactive elements.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: New Scientist; 71; Aug. 12
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  • 68
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    Thermal inertia mapping - A new view of the earth (1977)
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    Publication Date: 2011-08-17
    Description: The thermal response of a substance to a time-varying surface power input is determined by its thermal inertia. Remote sensing (e.g., from satellites) can be utilized to measure this property, which is related to surface composition or to near-surface soil moisture. An algorithm is developed which relates thermal inertia to remote measurements of surface temperature and reflectance. Application to geosynchronous satellite data illustrates the contrast between irrigated and desert areas in the region north of the Gulf of California. The effect of local weather conditions (latent and sensible heat transfer to the atmosphere) must be estimated before precise values for thermal inertia can be specified.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Journal of Geophysical Research; 82; June 20
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  • 69
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    Paragenesis and petrogenesis of a corundum-bearing marble at Hunza /Kashmir/ (1976)
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    Publication Date: 2011-08-17
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Mineralium Deposita; 11; 1976
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  • 70
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    Imaging radar applications to mapping and charting (1976)
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    Publication Date: 2011-08-17
    Description: The paper outlines the major actual and potential radar mapping applications, gives an account of the present state of satellite radar imaging, and reviews the radargrammetric work achieved since 1972. Attention is focused on the mapping methods and accuracy regarding single-image radar mapping, stereo radargrammetry, and mapping from blocks of overlapping imagery. It is recommended that more radargrammetric expertise be applied in radar mapping projects so that full advantage may be taken of the metric information potential of imaging radar.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
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    Precision processing of earth image data (1976)
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    Publication Date: 2011-08-17
    Description: Precise corrections of Landsat data are useful for generating land-use maps, detecting various crops and determining their acreage, and detecting changes. The paper discusses computer processing and visualization techniques for Landsat data so that users can get more information from the imagery. The elementary unit of data in each band of each scene is the integrated value of intensity of reflected light detected in the field of view by each sensor. To develop the basic mathematical approach for precision correction of the data, differences between positions of ground control points on the reference map and the observed control points in the scene are used to evaluate the coefficients of cubic time functions of roll, pitch, and yaw, and a linear time function of altitude deviation from normal height above local earth's surface. The resultant equation, termed a mapping function, corrects the warped data image into one that approximates the reference map. Applications are discussed relative to shade prints, extraction of road features, and atlas of cities.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: American Scientist; 64; Sept
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  • 72
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    Compensating for environmental variability in the thermal inertia approach to remote sensing of soil moisture (1976)
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    Publication Date: 2011-08-16
    Description: A procedure is developed for removing data scatter in the thermal-inertia approach to remote sensing of soil moisture which arises from environmental variability in time and space. It entails the utilization of nearby National Weather Service air temperature measurements to normalize measured diurnal surface temperature variations to what they would have been for a day of standard diurnal air temperature variation, arbitrarily assigned to be 18 C. Tests of the procedure's basic premise on a bare loam soil and a crop of alfalfa indicate it to be conceptually sound. It is possible that the technique could also be useful in other thermal-inertia applications, such as lithographic mapping.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Journal of Applied Meteorology; 15; Aug. 197
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  • 73
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    Water resources, summary (1975)
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    Publication Date: 2011-08-16
    Description: The application of remote sensing products to the development and understanding of water resources problems is considered. Geology and hydrogeology, analysis of watersheds, snow and ice, prediction of runoff from snowmelt, hydrologic land use classifications, soil moisture, evapotranspiration, flood hazards, and water quality surveys are among the topics discussed. Suggestions for further use of remotely sensed data are given along with increased user requirements.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-A; p 151-171
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  • 74
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    Land use/state and local users, summary (1975)
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    Publication Date: 2011-08-16
    Description: Alternative approaches to remote sensing applications in state and local resource management problems are discussed. Examples of application of remotely sensed data are given. User requirements for future applications are emphasized.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-A; p 129-150
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  • 75
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    Geology, summary (1975)
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    Publication Date: 2011-08-16
    Description: Trends in geologic application of remote sensing are identified. These trends are as follows: (1) increased applications of orbital imagery in fields such as engineering and environmental geology - some specific applications include recognition of active earthquake faults, site location for nuclear powerplants, and recognition of landslide hazards; (2) utilization of remote sensing by industry, especially oil and gas companies, and (3) application of digital image processing to mineral exploration.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-A; p 99-121
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  • 76
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    The Large Area Crop Inventory Experiment (LACIE). Part 3: A systematic approach to the practical application of remote-sensing technology (1975)
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    Publication Date: 2011-08-16
    Description: The application of remote sensing technology by the U.S. Department of Agriculture (USDA) is examined. The activities of the USDA Remote-Sensing User Requirement Task Force which include cataloging USDA requirements for earth resources data, determining those requirements that would return maximum benefits by using remote sensing technology and developing a plan for acquiring, processing, analyzing, and distributing data to satisfy those requirements are described. Emphasis is placed on the large area crop inventory experiment and its relationship to the task force.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-A; p 66-77
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  • 77
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    Applications of earth resources technology to human needs (1975)
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    Publication Date: 2011-08-16
    Description: The application of remote sensing technology in the fields of health and education is examined. The technology and accomplishments of ATS 6 and the development of a nationwide telecommunications system to meet the varied needs of the health and education communities are among the topics discussed. The economic and social aspects of utilizing and benefiting from remote sensing technology are stressed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp., Vol. 2-A; p 29-32
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  • 78
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    Turbidity in extreme western Lake Superior (1975)
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    Publication Date: 2011-08-16
    Description: Data were obtained from ERTS images for western Lake Superior for 1972-74. Data examination showed that for easterly winds the turbidity originating along the Wisconsin shore and the resuspension areas are transported northward then out along a N.E. path where it disperses, and often, for large storms, contaminates the Duluth water intake. Contaminants such as dredging fines anywhere along these paths would likewise find their way to the intake areas in concentrations comparable to the relative red clay concentration.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: A Study of Minn. Forests and Lakes using Data from Earth Resources Technol. Satellites; 25 p
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  • 79
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    Remote sensing of the surface emissivity at 9 microns over the globe (1976)
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    Publication Date: 2011-08-16
    Description: The infrared spectral measurements made by the Nimbus 4 infrared interferometer spectrometer (Iris) for a period of about 10 months are used to study the surface emissivity properties over the globe. It is found that the surface emissivity at 9 microns, as measured by Iris with a circular field of view of about 100-km diameter, is significantly less than unity over arid and semiarid areas. The spectral features in the 8-12-micron window observed over these lands reveal emissivity characteristics essentially due to quartz (SiO2). It is found that these emissivity features are significantly weakened by the presence of clay, clay horizons, or pedogenic horizons in the soil. Low emissivity is observed over sandy or sandy loam areas (psamments) with no clay or pedogenic horizons.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Journal of Geophysical Research; 81; July 20
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  • 80
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    The use of remote sensing imagery for environmental land use and flood hazard mapping (1976)
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    Publication Date: 2011-08-16
    Description: Flood hazard maps have been constructed for Graham, Yuma, and Yavapai Counties in Arizona using remote sensing techniques. Watershed maps of priority areas were selected on the basis of their interest to the county planning staff and represented areas of imminent or ongoing development and those known to be subject to inundation by storm runoff. Landsat color infrared imagery at scales of 1:1,000,000, 1:500,000, and 1:250,000 was used together with high-altitude aerial photography at scales of 1:120,000 and 1:60,000 to determine drainage patterns and erosional features, soil type, and the extent and type of ground cover. The satellite imagery was used in the form of 70 mm chips for enhancement in a color additive viewer and in all available enlargement modes. Field checking served as the main backup to the interpretations. Areas with high susceptibility to flooding were determined with a high level of confidence from the remotely sensed imagery.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Journal of Environmental Sciences; 19; May-June
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  • 81
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    LANDSAT data: A new perspective for geology. A review of the utilization of LANDSAT imagery for geological interpretation (1977)
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    Publication Date: 2011-08-17
    Description: Areas in which LANDSAT satellite imagery were found most useful include regional interpretations of geological structure, updating verifying of geologic maps, mineral and petroleum exploration, and the monitoring of natural hazards such as large-scale erosion and seismicity. Investigations in these areas of application demonstrated the wide variety of uses presently undertaken or envisioned for the future.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. John F. Kennedy Space Center Remote Sensing and the Earth; p 194-204
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  • 82
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    Use of remote sensing in facility siting (1978)
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    Publication Date: 2011-08-17
    Description: Environmental parameters important to, and necessary for, an environment impact assessment in terms of site selection for an electric power plant are defined. Remote sensing techniques and/or instrumentation applicable to site evaluation are described. Problem areas are discussed and recommendations given.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Appl. of Remote Sensing to the Chesapeake Bay Reg.; p 303-309
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  • 83
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    Role of remote sensing in documenting land use as it affects the Bay and Bay use as it affects the land (1978)
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    Publication Date: 2011-08-17
    Description: The remote sensing technology required for locating, identifying, and monitoring nonpoint, or diffuse, pollution caused by improper land use practices is discussed. Establishment of an information system to include all remote sensed data acquired on the Bay and to disseminate information to users is considered.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Appl. of Remote Sensing to the Chesapeake Bay Reg.; p 311-313
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  • 84
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    Inferring nutrient loading of estuarine systems by remote sensing of aquatic vegetation (1978)
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    Publication Date: 2011-08-17
    Description: THe use of remote sensing to record algal and vascular aquatic plant growths in estuarine waters is discussed. A technique is proposed that uses a combination of data to hierarchically classify watersheds with regard to severity of potential pollution. Specific nonpoint sources of nutrients in tributaries of the watershed are identified with lower altitude photography of vegetation and selected ground sampling. It is concluded that excessive growths of some aquatic plants may be related to nutrient pollution.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Goddard Space Flight Center Appl. of Remote Sensing to the Chesapeake Bay Reg.; p 275-281
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  • 85
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    Remote sensing of water quality (1978)
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    Publication Date: 2011-08-17
    Description: Remote sensing from aircraft has been used to determine water content in areas such as the New York Bight. Extension of the techniques developed to satellite sensing of the Chesapeake Bay will begin in 1978 with the launch of Nimbus-G. Remote sensing offers a number of interesting possibilities for investigating a reasonably large body of water, such as the Chesapeake Bay, coupled with some disadvantages. The chief advantage of remote sensing is that it offers the opportunity to cover large areas in relatively short periods of time. Low altitude satellites traveling at about 7 km/s can cover the Chesapeake Bay in about 1 minute so that the entire Bay can be studied under almost identical conditions of solar illumination.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Goddard Space Flight Center Appl. of Remote Sensing to the Chesapeake Bay Reg.; p 141-148
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  • 86
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    LANDSAT and other sensor data for land-use planning in the Baltimore area (1978)
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    Publication Date: 2011-08-17
    Description: Investigations of the current uses of the LANDSAT sensor data revealed that there were no successful uses of LANDSAT data in identifying specific urban uses other than densities of residential use, paved areas, and roof tops. Information was merged on developed land uses from the air photointerpretation and the land cover from the LANDSAT sensors. It was expected that this would give the most accurate results by taking results from each technique when they were best.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Goddard Space Flight Center Appl. of Remote Sensing to the Chesapeake Bay Reg.; p 33-35
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  • 87
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    The Chesapeake Bay Program: An opportunity to use an innovative monitoring technique (1978)
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    Publication Date: 2011-08-17
    Description: The goal of this program is to develop a management system that will protect and preserve the water quality of the Chesapeake Bay by effectively managing its uses and resources. To achieve this goal, three major objectives must be accomplished: (1) Determine what units of government have management responsibility for the environmental quality of the Chesapeake Bay, also to define how such management responsibility can best be structured so that communications and coordination can be improved between the respective units of government, research, educational institutions, concerned groups, and individuals. (2) Assess the principal factors having an adverse impact on the environmental quality of the Chesapeake Bay. Following this assessment and review of ongoing research, direct and coordinate research and abatement programs that will most effectively address these factors, and (3) analyze all environmental sampling data now being collected on the Chesapeake Bay and suggest and undertake methods for improving this data collection, and to establish a continuing capability for collecting storing, analyzing, and disseminating these data.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Goddard Space Flight Center Appl. of Remote Sensing to the Chesapeake Bay Reg.; p 11-15
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  • 88
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    A feasibility demonstration of aerial photographic support for marine archaeological surveys (1977)
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    Publication Date: 2011-08-17
    Description: The use of recutting remote sensing was demonstrated for location of shipwrecks in the Florida Keys, using selected films and filters for improved water penetration.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. John F. Kennedy Space Center Remote Sensing and the Earth; p 341-350
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  • 89
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    Photoarchaeology. Reconnaissance tests using color, as well as other films, indicate that exploration studies may be reduced from months to hours (1977)
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    Publication Date: 2011-08-17
    Description: Various types of films were used to detect pre-Columbian archaeological sites in South Dakota. Natural color and color IR films (scale 1/10,000) provided the best interpretation medium.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. John F. Kennedy Space Center Remote Sensing and the Earth; p 172-180
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  • 90
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    Usefulness of LANDSAT data for monitoring plant development and range conditions in California's annual grassland (1977)
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    Publication Date: 2011-08-17
    Description: A network of sampling sites throughout the annual grassland region was established to correlate plant growth in stages and forage production to climatic and other environmental factors. Plant growth and range conditions were further related to geographic location and seasonal variations. A sequence of LANDSAT data was obtained covering critical periods in the growth cycle. Data were analyzed by both photointerpretation and computer aided techniques. Image characteristics and spectral reflectance data were then related to forage production, range condition, range site, and changing growth conditions.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. John F. Kennedy Space Center Remote Sensing and the Earth; p 77-101
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  • 91
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    Use of clear lake as standard reflectors for atmospheric measurement (1977)
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    Publication Date: 2011-08-17
    Description: A method is proposed for using clear lakes as dark backgrounds against which the atmospheric path radiance can be determined from satellite observations. If the path radiance can be determined to sufficient accuracy, the atmospheric extinction can be inferred with suitable radiative transfer models. An extensive program of observation was made to determine the magnitude and variability of the various contributors to the total radiance observed by a satellite. It is shown that the volume and surface reflectance contributions (in the absence of sunglint) are small, constant, and can be modeled accurately enough to make these an insignificant source of error. The sunglint radiance observed in this investigation may be a significant source of error. It is shown that atmospheric extinction can be inferred from the path radiance observation after systematic differences between the model and observations are removed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ERIM Proc. of the 11th Intern. Symp. on Remote Sensing of Environment, Vol. 1; p 731-755
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    Remote sensing exploration for metallic mineral resources in central Baja California (1977)
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    Publication Date: 2011-08-17
    Description: Remote sensor data (primarily LANDSAT) was analyzed by photogeologic and computer-assisted enhancement techniques to evaluate the metallic mineral potential of Baja California. Overlays were prepared at 1:1,000,000 and 1:500,000 and included known geologic relationships and mineral occurrences, lineament, drainage and structural patterns, tonal anomalies, and enhancement results. Computer-assisted enhancement and classification of the test sites was performed using the IMAGE 100 system to identify subtle tonal anomalies thought related to mineralization using known sites as analysis guides. Mineral potential maps of Baja California were generated from these analyses and the ten highest priority targets visited. Preliminary assay results (atomic absorption analysis) for the samples recovered showed moderate to high geochemical anomalies for Copper (10 of 12 samples), Zinc (3 of 12 samples) and Lead (4 of 12 samples).
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ERIM Proc. of the 11th Intern. Symp. on Remote Sensing of Environment, Vol. 1; p 683-691
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  • 93
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    Testing the accuracy of remote sensing land use maps (1977)
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    Publication Date: 2011-08-17
    Description: Some of the main aspects that need to be considered in a remote sensing sampling design are: (1) the frequency that any one land use type (on the ground) is erroneously attributed to another class by the interpreter; (2) the frequency that the wrong land use (as observed on the ground) is erroneously included in any one class by the remote sensing interpreter; (3) the proportion of all land (as determined in the field) that is mistakenly attributed by the interpreter; and (4) the determination of whether the mistakes are random (so that the overall proportions are approximately correct) or subject to a persistent bias. A sampling and statistical testing procedure is presented which allows an approximate answer to each of these aspects. The concept developed and described incorporates the probability of making incorrect interpretations at particular prescribed accuracy levels, for a certain number of errors, for a particular sample size. It is considered that this approach offers a meaningful explanation of the interpretation accuracy level of an entire remote sensing land use survey.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ERIM Proc. of the 11th Intern. Symp. on Remote Sensing of Environment, Vol. 1; p 615-623
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  • 94
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    Monitoring irrigated land acreage using LANDSAT imagery: An application example (1977)
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    Publication Date: 2011-08-17
    Description: A demonstration of the utility of LANDSAT imagery for quickly and cheaply estimating irrigated land area was conducted in the Klamath River basin of Oregon. LANDSAT color composite images, at 1:250,000 scale and acquired on two dates during the 1975 growing season, were interpreted. Irrigated lands were delineated manually, and the irrigated area was estimated, based on dot-grid sampling of the manually delineated lands. The image interpretation estimate of irrigated area was then adjusted by a comparison of interpretation results with ground data on 45 sample plots, each 2.6 square kilometers in size. Two interpreters independently estimated the irrigated area. Their adjusted estimates were 115,000 hectares and 108,000 hectares respectively, with corresponding 95 percent confidence intervals of + or - 7,880 hectares and + or - 14,000 hectares.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ERIM Proc. of the 11th Intern. Symp. on Remote Sensing of Environment, Vol. 1; p 515-524
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  • 95
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    Digital exploitation of synthetic aperture radar (1977)
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    Publication Date: 2011-08-17
    Description: A digital processing and analysis scheme for use with digitized synthetic aperture radar data was developed. Using data from a four channel system, the imagery is preprocessed using specially designed software and then analyzed using preexisting facilities originally intended for use with MSS type data. Geometric and radiometric correction may be performed if desired, as well as classification analysis, Fast Fourier transform, filtering and level slice and display functions. The system provides low cost output in real time, permitting interactive imagery analysis. System information flow diagrams as well as sample output products are shown.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Proc. of the 11th Intern. Symp. on Remote Sensing of Environment, Vol. 1; p 563-570
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  • 96
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    LACIE: A look to the future (1977)
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    Publication Date: 2011-08-17
    Description: The Large Area Crop Inventory Experiment (LACIE) is a project designed to demonstrate the applicability of remote sensing technology to monitor globally an important world food crop - wheat. The need for more timely and reliable monitoring of food and fiber supplies is discussed, and the monitoring systems currently utilized are reviewed. The fundamentals involved in assessing the impact of variable weather and economic conditions on wheat acreage, yield, and production are elucidated. The experiment's approach to production monitoring is described, and its status is reviewed. Examples of acreage and yield monitoring in the Soviet Union are used to illustrate the experiment's approach.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ERIM Proc. of the 11th Intern. Symp. on Remote Sensing of Environment, Vol. 1; p 429-465
    Format: text
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  • 97
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    Remote sensing of air pollutants (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: Monitoring of pollutants within the troposphere is discussed. Selected specific techniques were investigated and it was shown how the use of these techniques fits into the overall national strategy for air pollution abatement.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ERIM Proc. of the 11th Intern. Symp. on Remote Sensing of Environment, Vol. 1; p 353-359
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  • 98
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    An overview of remote sensing technology transfer in Canada and the United States (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: To realize the maximum potential benefits of remote sensing, the technology must be applied by personnel responsible for the management of natural resources and the environment. In Canada and the United States, these managers are often in local offices and are not those responsible for the development of systems to acquire, preprocess, and disseminate remotely sensed data, nor those leading the research and development of techniques for analysis of the data. However, the latter organizations have recognized that the technology they develop must be transferred to the management agencies if the technology is to be useful to society. Problems of motivation and communication associated with the technology transfer process, and some of the methods employed by Federal, State, Provincial, and local agencies, academic institutions, and private organizations to overcome these problems are explored.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ERIM Proc. of the 11th Intern. Symp. on Remote Sensing of Environment, Vol. 1; p 325-331
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  • 99
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    Remote sensing and today's forestry issues (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: The actual and the desirable roles of remote sensing in dealing with current forestry issues, such as national forest policy, supply and demand for forest products and competing demands for forest land are discussed. Topics covered include wood shortage, regional timber inventories, forests in tropical and temperate zones, Skylab photography, forest management and protection, available biomass studies, and monitoring.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ERIM Proc. of the 11th Intern. Symp. on Remote Sensing of Environment, Vol. 1; p 267-276
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  • 100
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    Operational utilization of remotely sensed data (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: The use of data from environmental satellites and other remote sensing platforms in some of NOAA's operational services are described. Topics discussed include: hurricanes; severe local storms and tornadoes; forest guidance; weather forecasting; hydrology; space program support; oceanography; search and rescue; and wildlife management. Applications which have become routine, and those which are in advanced field test are included. Some applications yield a clear cut economic benefit. In other cases, benefits -- if any -- are obscure. In yet other cases, benefits in one sector may be offset by detriments in another. Illustrative examples are given.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ERIM Proc. of the 11th Intern. Symp. on Remote Sensing of Environment, Vol. 1; p 221-228
    Format: text
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    NASA TECHNICAL REPORTS
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