Hydrologic interpretations based on infrared imagery of Long Island, New York

Water Supply Paper 2009- B



Six remote-sensing flights over Long Island's north and south shores were made during the period July 13, 1967, to February 25, 1970. Infrared imagery in the 8- to 14-micrometer range was obtained; results varied from poor to excellent in quality. The ability of the RS 7 and Reconofax IV imagers to discern thermal contrasts of as little .as 1 ? to 2?C (Celsius) permitted identification of areas of heavy ground-water discharge. These areas were concentrated primarily along the eroded headlands of the north shore and in the lower reaches of watercourses draining into Great South Bay. Only a few highly localized examples of direct ground-water discharge into the embankments ,along Long Island's south shore were detected in the imagery. Thermal loading emanating from a powerplant near Oceanside is shown to be quickly dissipated in Middle Bay. Specific examples show that infrared imagery may ,also be used to identify circulation patterns, ice cover, changes in stream-temperature regimen, and the location of sewer outfalls. Optimal time for the collection of infrared imagery for hydrologic studies on Long Island is in summer and in winter, when surface-water thermal differences are relatively large.

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Hydrologic interpretations based on infrared imagery of Long Island, New York
Series title Water Supply Paper
Series number 2009
Chapter B
DOI 10.3133/wsp2009B
Edition -
Year Published 1972
Language ENGLISH
Publisher U.S. Govt. Print. Off.,
Description iv B 1-B 20 p. :illus. ;24 cm.
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