DocumentCode :
2840257
Title :
Hydrographic Charting from LANDSAT Satellite: A Comparison with Aircraft Imagery
Author :
Middleton, Elizabetha M. ; Barker, John L.
Author_Institution :
Computer Sciences Corporation, Silver Spring, MD, USA
fYear :
1976
fDate :
13-15 Sept. 1976
Firstpage :
412
Lastpage :
417
Abstract :
The relative capabilities of two remote-sensing systems in measuring depth and, consequently, bottom contours in sandy-bottomed and sediment-laden coastal waters were determined quantitatively. The Multispectral Scanner-(MSS), orbited on the Landsat-2 Satellite, and the Ocean Color Scanner (OCS), flown on U-2 aircraft, were used for this evaluation. Analysis of imagery taken simultaneously indicates a potential for hydrographic charting of marine coastal and shallow shelf areas, even when water turbidity is a factor. Several of the eight optical channels examined on the OCS were found to be sensitive to depth or depth-related information. The greatest sensitivity was in OCS-4 ( 0.544 \\pm 0.012 \\mu m) from which contours corresponding to depths up to 12 m were determined. The sharpness of these contours and their spatial stability through time suggests that upwelling radiance is a measure of bottom reflectance and not of water turbidity. The two visible channels on Landsat\´s MSS were less sensitive in the discrimination of contours, with depths up to 8 m in the high-gain mode (3 X) determined in MSS-4 (0.5 to 0.6/\\mu m).
Keywords :
Computer displays; Geology; Layout; Oceans; Remote sensing; Satellites; Sensor phenomena and characterization; Spatial resolution; State estimation; Sun;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
OCEANS '76
Conference_Location :
Washington, DC, USA
Type :
conf
DOI :
10.1109/OCEANS.1976.1154248
Filename :
1154248
Link To Document :
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