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  • EARTH RESOURCES AND REMOTE SENSING  (4,171)
  • Fluid Mechanics and Thermodynamics
  • 2020-2020
  • 1975-1979  (3,657)
  • 1970-1974  (529)
  • 1945-1949  (44)
Collection
Keywords
Years
Year
  • 1
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    Image data processing of earth resources management (1974)
    In:  CASI
    Details
    Publication Date: 2006-05-07
    Description: Various image processing and information extraction systems are described along with the design and operation of an interactive multispectral information system, IMAGE 100. Analyses of ERTS data, using IMAGE 100, over a number of U.S. sites are presented. The following analyses are included: investigations of crop inventory and management using remote sensing; and (2) land cover classification for environmental impact assessments. Results show that useful information is provided by IMAGE 100 analyses of ERTS data in digital form.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Chamber of Commerce Proc. of the 1st 1974 Technol. Transfer Conf.; p 201-218
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  • 2
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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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  • 3
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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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  • 4
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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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  • 5
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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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  • 6
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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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  • 7
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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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  • 8
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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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  • 9
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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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  • 10
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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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  • 11
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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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  • 12
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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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  • 13
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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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  • 14
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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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  • 15
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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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  • 16
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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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  • 17
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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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  • 18
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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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  • 19
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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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  • 20
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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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  • 21
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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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  • 22
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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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  • 23
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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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  • 24
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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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  • 25
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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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  • 26
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    Application of advanced signal processing techniques to the rectification and registration of spaceborne imagery (1974)
    In:  CASI
    Details
    Publication Date: 2006-05-07
    Description: The development of an ERTS/MSS image processing system responsive to the needs of the user community is discussed. An overview of the TRW ERTS/MSS processor is presented, followed by a more detailed discussion of image processing functions satisfied by the system. The particular functions chosen for discussion are evolved from advanced signal processing techniques rooted in the areas of communication and control. These examples show how classical aerospace technology can be transferred to solve the more contemporary problems confronting the users of spaceborne imagery.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Chamber of Commerce Proc. of the 1st 1974 Technol. Transfer Conf.; p 245-255
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  • 27
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    The application of natural science data to land management decision-making (1974)
    In:  CASI
    Details
    Publication Date: 2006-05-07
    Description: A natural environmental analysis process which allows the decision maker to know the probable consequences of a decision prior to the act is developed. Emphasis is placed on the fit between the natural environment and the social, economic, and functional attributes of man's communities and the transition from nature in its present state to various forms and intensities of development. Applications of the analysis are examined. It is concluded that the analysis is a workable system for land use management.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Chamber of Commerce Proc. of the 1st 1974 Technol. Transfer Conf.; p 219-228
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  • 28
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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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  • 29
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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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  • 30
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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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  • 31
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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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  • 32
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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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  • 33
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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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  • 34
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    Comment on satellite altimeter data (1974)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: SKYLAB mission SEASAT-B altimeter observations in combination with surface gravity measurements provide useful data on the marine geoid and expected ocean perturbations from analyses of seamount structures.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA, Washington Seasat-A Sci. Contrib.; p 38
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  • 35
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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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  • 36
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    Baring high-albedo soils by overgrazing - A hypothesized desertification mechanism (1974)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Observations are reported of high-albedo soils denuded by overgrazing which appear bright, in high contrast to regions covered by natural vegetation. Measurements and modeling show that the denuded surfaces are cooler, when compared under sunlit conditions. This observed 'thermal depression' effect should, on theoretical grounds, result in a decreased lifting of air necessary for cloud formation and precipitation, and thus lead to regional climatic desertification.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Science; 186; Nov. 8
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  • 37
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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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  • 38
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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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  • 39
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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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  • 40
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    Computer mapping of Landsat data for environmental applications (1975)
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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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  • 41
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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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  • 42
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    Simultaneous crystallization of feldspar intergrowths from the melt (1977)
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    Publication Date: 2011-08-17
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: American Mineralogist; 62; 1977
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  • 43
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    Remote sensing techniques applied to multispectral recognition of the Aranjuez pilot zone (1977)
    In:  Other Sources
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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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  • 44
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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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  • 45
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    Earth-atmosphere system and surface reflectivities in arid regions from Landsat MSS data (1976)
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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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  • 46
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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.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
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  • 47
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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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  • 48
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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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  • 49
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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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  • 50
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    Regional inventories and mapping of land resources and environmental geology using remotely sensed data (1975)
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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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  • 51
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    Remote sensing and snowpack management (1974)
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    Publication Date: 2011-08-16
    Description: The present work describes the use of an airborne electromagnetic sensing system for measuring snowpack depth, density, and water content. A transmitter sends a sequence of pulses of stepped frequencies, and the reflections are measured by a sensitive receiver. The combination of the snowpack and the earth interacts with the electromagnetic wave so as to modify the characteristics of the reflected signals. The variation of the reflected intensity with frequency provides the desired data. A theoretical analysis of return signal and snowpack parameter relationships is given, and the results of experimental verification of the theory are discussed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: American Water Works Association; vol. 66
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  • 52
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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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  • 53
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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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  • 54
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    Wheat - Its growth and disease severity as deduced from ERTS-1 (1974)
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    Publication Date: 2011-08-16
    Description: The spectral reflectance of a cropped surface changes as the plant develops. An indicator of crop growth is leaf area index (ratio of green leaf area to soil area). The leaf area index, disease severity, and yield were determined for several winter wheat fields in Kansas during the 1973 growing season. Multispectral scanner (MSS) data from Earth Resources Technology Satellite-1 (ERTS-1) showed a high correlation (r greater than or equal to 0.90) between crop growth and MSS4/MSS5, and crop growth and MSS5/MSS6. Wheat disease severity and yields were significantly correlated at the 5% level with MSS4/MSS6 and with MSS4/MSS7. Further investigation is required before ERTS imagery can be routinely used detecting and estimating disease severity and yield reduction.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Remote Sensing of Environment; 3; 4, 19; 1974
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  • 55
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    Microwave maps of the polar ice of the earth (1974)
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    Publication Date: 2011-08-16
    Description: Synoptic views of the entire polar regions of earth have been obtained free of the usual persistent cloud cover using a scanning microwave radiometer operating at a wavelength of 1.55 cm on board the Nimbus-5 satellite. Three different views at each pole are presented utilizing data obtained at approximately one-month intervals from December 1972 to February 1973. Large discrepancies exist between the long-term ice cover depicted in various atlases and the actual extent of the canopies. The distribution of multiyear ice in the north polar region is markedly different from that predicted by existing ice dynamics models. Irregularities in the edge of the Antarctic sea ice pack occur that have neither been observed previously nor anticipated. The brightness temperatures of the Greenland and Antarctic glaciers show interesting contours probably related to the ice and snow morphologic structure.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: American Meteorological Society; vol. 55
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  • 56
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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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  • 57
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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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  • 58
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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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  • 59
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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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  • 60
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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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  • 61
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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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  • 62
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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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  • 63
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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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  • 64
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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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  • 65
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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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  • 66
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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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  • 68
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    Use of ERTS-1 DCS in the management and control of water resources systems (1975)
    In:  Other Sources
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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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  • 69
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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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  • 70
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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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  • 71
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    The use of Earth Resources Technology Satellite for relaying hydrologic data in the Delaware River basin (1975)
    In:  Other Sources
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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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  • 72
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    Contribution of space platforms to a ground and airborne remote-sensing programme over active Italian volcanoes (1974)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: ERTS-1 imagery of the volcanic areas of southern Italy was used primarily for the evaluation of space platform capabilties in the domains of regional geology, soil and rock-type classification and, more generally, to study the environment of active volcanoes. The test sites were selected and equipped primarily to monitor thermal emission, but ground truth data was also collected in other domains (reflectance of rocks, soils and vegetation). The test areas were overflown with a two channel thermal scanner, while a thermo camera was used on the ground to monitor the hot spots. The primary goal of this survey was to plot the changes in thermal emission with time in the framework of a research program for the surveillance of active volcanoes. However, another task was an evaluation of emissivity changes by comparing the outputs of the two thermal channels. These results were compared with the reflectance changes observed on multispectral ERTS-1 imagery.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ESRO European Earth-Resources Satellite Expts.; p 185-197
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  • 73
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    Infrared remote sounding (1974)
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    Publication Date: 2011-08-16
    Description: Atmospheric radiation was measured as a function of wavelength, position, angle, and time. Radiation was determined by temperature, cloud (aerosol), composition, and surface emissivity measurements. The theory of radiative transfer is reviewed, along with retrieval methods. Instruments onboard space probes for infrared remote sounding of planetary atmospheres are also described.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Calif. Univ. Proc. of the UCLA Intern. Conf. on Radiation and Remote Probing of the Atmosphere; p 471-506
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  • 74
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    Refinement of the Goloseyev catalog point coordinates in the limb zone and determination of point coordinates on the back side of the moon (1974)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Lunar photography from Zond 6 showed half the side of the moon which is not visible from the earth, and this made it possible to construct a photogrammetric grid encompassing the entire Western Hemisphere and referenced to points of the visible side, whose coordinates were taken from the Goloseyev catalog. The problem was solved using two pictures taken from approximately 9000 km above the lunar surface. The photogrammetric grid was constructed by joint statistical analysis of the measurements of both pictures and the selenographic coordinates of the catalog points. A special algorithm was developed and a program compiled realizing the maximum likelihood method which permitted working with up to 120 catalog points simultaneously.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 257-272
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  • 75
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    Determination of selenographic coordinates of lunar surface points from single pictures obtained from Zond 6 (1974)
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    Publication Date: 2011-08-16
    Description: Pictures of the lunar surface with an image of practically the entire lunar limb were obtained from the Zond 6 spacecraft. During the time of exposure, the entire lunar surface covered by these photographs was illuminated by the sun. Such single pictures were used to find the external orientation elements and selenographic coordinates of the photographed lunar surface points. The selenographic coordinate system was specified by the Goloseyev catalog and was realized by points of this catalog identified on the pictures and termed reference points. Craters located on the invisible side of the moon and also other points of the Goloseyev catalog, which could be used as control points, were taken as the points being determined. The technique used to compute the selenographic coordinates of the points is outlined.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 272-282
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  • 76
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    Determination of dynamic corrections to point coordinates of photographs obtained by the Zond 6 and Zond 8 spacecraft (1974)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: The linear and angular motions of the Zond 6 and Zond 8 spacecraft imaging camera during the exposure cause displacements of the optical image points. In the case of instantaneous exposure of each individual point and the nonsimultaneous exposure of the complete frame, this leads to finite geometric shifts of the points without causing blurring of the photographic image. Therefore, when measuring the resulting photographic pictures, the problem arises of reducing the picture point positions to a common instant of time. This reduction is performed by means of dynamic corrections to the measured picture point coordinates. These corrections are found by using formulas of dynamic photogrammetry. Their use with the Zond space probe photographs is described.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 245-257
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  • 77
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    Evaluating the accuracy of selenodesic reference grids (1974)
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    Publication Date: 2011-08-16
    Description: Estimates were made of the accuracy of reference point grids using the technique of calculating the errors from theoretical analysis. Factors taken into consideration were: telescope accuracy, number of photographs, and libration amplitude. To solve the problem, formulas were used for the relationship between the coordinates of lunar surface points and their images on the photograph.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 231-245
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  • 78
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    Identification characteristics of certain lunar relief forms on pictures obtained from spacecraft (1974)
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    Publication Date: 2011-08-16
    Description: This investigation was restricted to the determination of recognitional characteristics of a single type of relief form, dimple craters on the surface of maria. These craters were arbitrarily considered as closed, negative relief forms, circular in plan-view, and symmetric relative to the center. Two techniques were used to determine the shadow configuration in the craters: (1) experimental determination of the shadow edge by illuminating the models of different profile shapes with a parallel light beam; and (2) geometric construction of the shadow edge using a vertical section of the formation in the direction of the solar rays. A morphological map of the surface which includes the following factors can be compiled using the proposed identification technique: crater profile nature, crater diameter, ratio of diameter and depth, sharpness of the lip, and distribution density of the forms.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 205-215
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  • 79
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    Use of TV pictures obtained from weather satellites to study the geological structure of the earth (1974)
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    Publication Date: 2011-08-16
    Description: Results are presented of Soviet investigations into the use of television imagery obtained from meteorological satellites for the interpretation of tectonics, lithology, and structural properties of the earth. The area investigated encompassed the eastern part of Iran, and the western regions of Afghanistan and Pakistan. Interpretation of the features identified during the analysis was accomplished by comparing these features with physical, geographic, geological, and tectonic maps. It was concluded that television pictures of the earth from space can be used for geological and structural analysis.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 190-194
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  • 80
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    On the determination of certain astronomical, selenodesic, and gravitational parameters of the moon (1974)
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    Publication Date: 2011-08-16
    Description: A method was examined for joint construction of a selenocentric fundamental system which can be realized by a coordinate catalog of reference contour points uniformly positioned over the entire lunar surface, and determination of the parameters characterizing the gravitational field, rotation, and orbital motion of the moon. Characteristic of the problem formulation is the introduction of a new complex of inconometric measurements which can be made using pictures obtained from an artificial lunar satellite. The proposed method can be used to solve similar problems on any other planet for which surface images can be obtained from a spacecraft. Characteristic of the proposed technique for solving the problem is the joint statistical analysis of all forms of measurements: orbital iconometric, earth-based trajectory, and also a priori information on the parameters in question which is known from earth-based astronomical studies.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 215-231
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  • 81
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    Global small-scale lunar cartography (1972)
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    Publication Date: 2011-08-16
    Description: The primary sources information for compiling this map were the photographs of the visible hemisphere obtained by earth-based observatories, the Luna 3 and Zond 3 pictures, and a small number of Lunar Orbiter pictures. The primary content of the complete lunar map is the surface relief and its tonal characteristics. In preparing the map, particular attention was devoted to the variety of lunar relief forms. The color spectrum of the map was selected not only for the natural coloring of the lunar surface, but also with the objective of achieving maximum expressiveness. A lunar globe to scale 1:10 million was prepared along with the preparation of the map. The scale of the globe, half that of the map, led to some selection and generalization of the relief forms. The globe permits maintaining simultaneously geometric similarity of contours, exact proportions of areas, and identical scales in all directions. The globe was prepared in both the Latin and Russian languages.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 195-204
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  • 82
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    Experience in integrated geological and geographical interpretation of space photographs obtained in the USSR (1974)
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    Publication Date: 2011-08-16
    Description: Two examples of regional interpretation of imagery acquired from satellite photographic and television systems are discussed. The imagery was taken aboard the Zond 7 and Kosmos satellites, and depicted; (1) sand and dust storm activity in the eastern Mediterranean Sea area; and (2) landscape and structural properties of territory of southwestern United States and northwestern Mexico.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 182-189
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  • 83
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    Geological and geophysical studies from space and prospects for their development (1974)
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    Publication Date: 2011-08-16
    Description: The possibilities of using images obtained by devices which detect the reflected and self-radiation of the the earth's surface and atmosphere in other parts of the spectrum, other than visible, were analyzed. Considered were: (1) infrared; (2) radiothermal; and (3) magnetic field.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 174-181
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  • 84
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    System for electronic transformation and geographic correlation of satellite television information (1974)
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    Publication Date: 2011-08-16
    Description: An electronic transformation and correlation system has been developed for the Meteor space weather system which provides transformation and scaling of the original picture, accounts for satellite flight altitude and inclinations of the optical axes of the transmitting devices, and simultaneously superposes the geographical coordinate grid on the transformed picture.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 155-164
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  • 85
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    Geographical correlation of TV and IR images obtained from weather satellites (1974)
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    Publication Date: 2011-08-16
    Description: The requirements on the accuracy of geographical correlation of TV and IR cloud cover images are determined by the objective of the analysis of the weather information contained in these images. In the operational analysis case, the correlation accuracy need not be high. Errors of several tens of kilometers in determining the location of the cloud formation contours are considered acceptable in this case. Such correlation must be provided in real image reception time. Scientific studies require accurate correlation of the cloud formation contours. The errors in determining their position should be commensurate with the imaging system resolution. The geometric aspects of developing methods and equipment for geographical correlation of television and infrared images of cloud cover taken from Meteor satellites are discussed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 146-155
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  • 86
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    Geographic correlation of television pictures obtained from weather satellites (1974)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: The geographical control of satellite pictures, using the terminology of aerial photography, can be treated as the problem of analysis of a single picture with the objective of obtaining a ground contour map. Studies have shown the possibility and capability of the method of composing photographic maps from transformed television pictures. Optico-mechanical transformation solves the problem of geographical correlation for operational purposes. However, this technique does not compensate for electronic distortion, and accounts for earth sphericity only approximately. However, for certain purposes (studying ice drift), the maximum possible accuracy is required. Analytic geographical correlation methods using digital computers should be considered promising.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 143-145
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  • 87
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    Geometric distortions of autocollimation type scanners (1974)
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    Publication Date: 2011-08-16
    Description: One criterion of image quality is its geometric similarity to the control test. The ability of television, phototelevision, phototelegraphic, and other systems to transmit geometrically similar images is characterized by the geometric distortion coefficient. Linear distortions result from the inaccuracy of scanning mechanism element assembly, and distortions can be minimized during adjustment operations or may be easily compensated during image reception. Brief descriptions are given of the possible sources of nonlinear distortions which arise in these devices due to the scanning mechanism, objective distortion, or the nodding mirror.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 48-51
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  • 88
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    Geometric distortions of opticommercial panoramic television systems (1974)
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    Publication Date: 2011-08-16
    Description: One of the problems solvable by the spaceborne television system, topographical surveying, makes high demands on image quality, particularly on the geometric distortions introduced by the television camera. It is the geometric distortions which determine measurement accuracy and, consequently, the possibility of creating reliable planetary surface maps. Comparative analysis of the different television systems capable of solving the problem showed that the requirements on quality of the transmitted images are best satisfied by television cameras with opticomechanical scanning. The design of panoramic television systems and the process of image construction by the opticomechanical camera are discussed. Results indicate that panoramic television cameras have the necessary instrumental accuracy and permit determination of the direction to objects with an error practically equal to the resolution.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 51-59
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  • 89
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    Determining iconometric parameters of imaging devices using a wide-angle collimator (1974)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: The problem of determining the iconometric parameters of the imaging device can be solved if the camera being calibrated is used to obtain the image of a group of reference points, the directions to which are known. In order to specify the imaging device coordinate system, it is sufficient in principle to obtain on the picture the images of three reference points which do not lie on a single straight line. Many more such points are required in order to determine the distortion corrections, and they must be distributed uniformly over the entire field of view of the camera being calibrated. Experimental studies were made using this technique to calibrate photographic and phototelevision systems. Evaluation of the results of these experiments permits recommending collimators for calibrating television and phototelevision imaging systems, and also short-focus small-format photographic cameras.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 41-47
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  • 90
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    Future development of IR thermovision weather satellite equipment (1974)
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    Publication Date: 2011-08-16
    Description: The self radiation of the surface being viewed is used for image synthesis in IR thermovision equipment. The installation of such equipment aboard weather satellites makes it possible to obtain cloud cover pictures of the earth's surface in a complete orbit, regardless of the illumination conditions, and also provides quantitative information on the underlying surface temperature and cloud top height. Such equipment is used successfully aboard the Soviet satellites of the Meteor system, and experimentally on the American satellites of the Nimbus series. With regard to surface resolution, the present-day IR weather satellite equipment is inferior to the television equipment. This is due primarily to the comparatively low detectivity of the IR detectors used. While IR equipment has several fundamental advantages in comparison with the conventional television equipment, the problem arises of determining the possibility for future development of weather satellite IR thermovision equipment. Criteria are examined for evaluating the quality of IR.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 29-41
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  • 91
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    Iconics and iconology (1974)
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    Publication Date: 2011-08-16
    Description: The term iconics covers the complex of methods and equipment for obtaining images, integrated on a common methodological basis. The concept combines such methods and equipment for obtaining images as photography, television, phototelevision, thermovision, and radar. The term iconics has been used previously, but in a narrower sense, as the name for the theory of image reproduction systems, primarily in the sense of their optimization. Iconics must include two branches; theoretical and practical. The system optimization problem then takes its place in theoretical iconics along with other problems. The term iconology has been proposed to cover the complex of image interpretation methods and equipment.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 1-20
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  • 92
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    Prospects for the development of phototelevision methods in space studies (1974)
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    Publication Date: 2011-08-16
    Description: In-space imaging of the surface of celestial bodies can be carried out by both television and photographic equipment. Television equipment of various types has the important property of being capable of transmitting imagery in real time. Frequently this is not possible because of the nature of information transmission over the spacecraft-ground communication line. The inadequate energy handling capacity of the communication lines usually requires storage of the video information aboard the spacecraft for subsequent transmission at a definite time and rate. For this purpose, the television camera can be connected with a magnetic memory, or the television imagery may be stored on photographic film. The television/photographic film system has been termed phototelevision. The choice of a system of one type or the other is dictated by several considerations, the most important of which are the size and weight characteristics, other conditions being the same (power consumption, reliability, etc.). The advantages and disadvantages of the two systems are discussed and examples are given of types of satellites on which the two types have been employed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Space Iconics (NASA-TT-F-798); p 21-28
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  • 93
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    Mineral resources, geological structures, and landform surveys (1974)
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    Publication Date: 2011-08-16
    Description: Since March 1973 there has been a shift in ERTS results in geology from the initial show-and-tell stage to a period in which scientific studies predominated, and now to an emphasis on effective applications having economic benefits and clearcut relevance to national needs. Many years will be spent on geological tasks resulting from ERTS alone; reconnaissance mapping in inaccessible regions, map revisions, regional or synoptic analysis of crustal fractures, assessment of dynamic surficial processes, systematic search for mineral wealth, use of sophisticated enhancement techniques, recognition of potential geologic hazards, and many more applications that still need to be defined.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Third ERTS Symp., Vol. 2; p 147-167
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  • 94
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    Land use and mapping (1974)
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    Publication Date: 2011-08-16
    Description: The ERTS program provides data that can be used to derive information relative to the actual use of the land resource, in a practical and timely manner. ERTS data provide coverage of total land areas, and its repetitive nature enables the detection and monitoring of changes taking place in land use. Generally, the techniques and the procedures used to extract information from ERTS data may be categorized as pertaining to either the interpretations of ERTS imagery or to the use of digital data and computer techniques. Examples are given of the use of ERTS-1 data for land use classification in: (1) New England areas; (2) Chesapeake Bay and Washington, D.C.; (3) Mississippi Gulf Coast; (4) Los Angeles, California; (5) Houston, Texas; and (6) Phoenix, Arizona.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Third ERTS Symp., Vol. 2; p 138-146
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  • 95
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    Water resources (1974)
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    Publication Date: 2011-08-16
    Description: ERTS-1 applications in snow and ice monitoring, surface water monitoring, including monitoring of wetland areas and flood inundated area mapping, and also watershed monitoring for runoff prediction are discussed. Results also indicate that geological features can be noted which relate to ground water. ERTS-1 data can be used successfully in operational situations by water resources management agencies.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Third ERTS Symp., Vol. 2; p 126-137
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  • 96
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    Agriculture, forestry, range resources (1974)
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    Publication Date: 2011-08-16
    Description: The necessary elements to perform global inventories of agriculture, forestry, and range resources are being brought together through the use of satellites, sensors, computers, mathematics, and phenomenology. Results of ERTS-1 applications in these areas, as well as soil mapping, are described.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Third ERTS Symp., Vol. 2; p 116-125
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    Automated strip mine and reclamation mapping from ERTS (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: In response to the urgent need for a faster and more economical means of generating strip mine and reclamation maps, a study was conducted to evaluate the suitability of using ERTS computer compatible tape for automatic mapping. The procedure uses computer target spectral recognition techniques as a basis for classification. The area encompassed by this investigation includes five counties in eastern Ohio that comprise nearly 7,500 square kilometers (3,000 square miles). The counties have been disrupted by coal mining since the early 1800's, and strip mining has been practiced in all of them. The environmental effects of strip mining are also discussed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Goddard Space Flight Center Third ERTS Symp., Vol. 2; p 87-101
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  • 98
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    A review of initial investigations to utilize ERTS-1 data in determining the availability and distribution of living marine resources (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The National Marine Fisheries Service has been studying the application of aerospace remote sensing to fisheries management and utilization for many years. The 15-month ERTS study began in July 1972 to: (1) determine the reliability of satellite and high altitude sensors to provide oceanographic parameters in coastal waters; (2) demonstrate the use of remotely-sensed oceanographic information to predict the distribution and abundance of adult menhaden; and (3) demonstrate the potential use of satellites for acquiring information for improving the harvest and management of fisheries resources. The study focused on a coastal area in the north-central portion of the Gulf of Mexico, including parts of Alabama, Mississippi, and Louisiana. The test area used in the final analysis was the Mississippi Sound and the area outside the barrier islands to approximately the 18-meter (10-fathom) curve.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Goddard Space Flight Center Third ERTS Symp., Vol. 2; p 76-86
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  • 99
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    ERTS program of the US Army Corps of Engineers (1974)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: The Army Corps of Engineers research and development efforts associated with the ERTS Program are confined to applications of investigation, design, construction, operation, and maintenance of water resource projects. Problems investigated covered: (1) resource inventory; (2) environmental impact; (3) pollution monitoring; (4) water circulation; (5) sediment transport; (6) data collection systems; (7) engineering; and (8) model verification. These problem areas were investigated in relation to bays, reservoirs, lakes, rivers, coasts, and regions. ERTS-1 imagery has been extremely valuable in developing techniques and is now being used in everyday applications.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Goddard Space Flight Center Third ERTS Symp., Vol. 2; p 62-75
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  • 100
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    An evaluation of the suitability of ERTS data for the purposes of petroleum exploration (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: This investigation was undertaken to determine the types and amounts of information valuable to petroleum exploration that are extractable from ERTS data and to determine the cost of obtaining the information from ERTS relative to costs using traditional or conventional means. In particular, it was desirable to evaluate this new petroleum exploration tool in a geologically well-known area in order to assess its potential usefulness in an unknown area. In light of the current energy situation, it is felt that such an evaluation is important in order to best utilize technical efforts with customary exploration tools, by rapidly focusing attention on the most promising areas in order to reduce the time required to go through the exploration cycle and to maximize cost savings. The Anadarko Basin lies in western Oklahoma and the panhandle of Texas (Figure 1). It was chosen as a test site because there is a great deal of published information available on the surface and subsurface geology of the area, there are many known structures that act as traps for hydrocarbons, and it is similar to several other large epicontinental sedimentary basins.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Goddard Space Flight Center Third ERTS Symp., Vol. 2; p 50-61
    Format: text
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