Accession Number : AD0767721

Title :   Coastal Bathymetric Plotting.

Descriptive Note : Final summary rept. 22 Feb-28 Sep 73,

Corporate Author : ROCKWELL INTERNATIONAL CORP DOWNEY CALIF SPACE DIV

Personal Author(s) : Hodder,David T.

Report Date : 28 SEP 1973

Pagination or Media Count : 77

Abstract : The report summarizes the most recent research into the spatial temporal image merging technique for remote sensing of bathymetry in turbid coastal waters. Prior research had proved the method under average to optimum turbid water seeing conditions. This report discusses the degradation of the method under more severe environmental conditions and evaluates auxiliary methods for its improvement under difficult conditions. Factors such as sea state bottom reflectance variation and differing sediment loads are considered. Auxiliary methods for remote calibration include thermal IR scanning for surface current mapping, electronic removal of solar glitter patterns and spectral brightness variations in the sea, together with multiple color dye releases at their characteristic optical extinction depths to infer vertical current and hence sediment distribution. A final task is the preliminary evaluation of this bathymetry plotting method from ERTS-1 space imagery in a number of non-California, turbid coastal water types. (Modified author abstract)

Descriptors :   (*OCEAN BOTTOM TOPOGRAPHY, *DEPTH FINDING), (*COASTAL REGIONS, AERIAL PHOTOGRAPHY), SEDIMENTATION, OCEAN CURRENTS, TRACER STUDIES, MULTIBAND SPECTRAL RECONNAISSANCE

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE