The National Aeronautics and Space Administration is supporting research in those areas of air- and spaceborne remote sensing which are related to the study of natural and cultural resources. Resources which can be studied in this manner include mineral districts, uncharted petroleum basins, little known coastal areas, soils and soil moisture, crops, timber, land and land use in both agricultural and metropolitan areas, watershed areas, transportation networks, sea state, marine near-surface life, and so forth. Remote sensing instruments in earth-orbital spacecraft possess a number of unique advantages, among which are: rapidity and continuity of observations, synoptic imagery for regional analyses, reduced data acquisition time, relative freedom from weather disturbances, reduced costs for those features requiring periodic measurements, and better quality data of some types. The progress being made by NASA in these areas is discussed.

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