NASA/COUSTEAU OCEAN BATHYMETRY EXPERIMENT REMOTE BATHYMETRY USING HIGH GAIN LANDSAT DATA

摘要

Satellite remote bathymetry was successfully verified to 22 m depths where water clarity was defined by α= .058 m_1 and bottom reflection, rb, was 26％High gain Band 4 and Band 5 CCT data from Landsat-1 was used for a test site in the Bahama Islands and near Florida.nNear Florida where α= . 11 m-1 and rb= 20％, depths to 10 m were verified. Depth accuracies within 10％rms were achieved. Position accuracies within one Landsat pixel were obtained by reference to the Transit navigation satellites.nTwo ships, Calypso and Beayondan, were at anchor on each of the seven days during Landsat-1 and 2 overpasses: LORAN-C position information was used when the ships were underway making depth transects. Results are expected to be useful for updating charts showing shoals hazardous to navigation or in monitoring changes in nearshore topography.