Bathymetry Using Thematic Mapper Imagery

Abstract

Remotely sensed bathymetry in the vicinity of Vieques Island and Ke( West, Florida is performed using Landsat Thematic Mapper imagery and a multiband model. Previous bathymetric algorithms using a single band or a ratio of bands assumed a constant bottom reflectance and thus required a bottom -type classification to isolate areas of uniform reflectance.The multiband model described in this paper does not require homogenous bottom -types and yields somewhat improved results over older methods.Depths to 16 m are measured with RMS residuals of less than 2 m. Results using other algorithms will be compared to the results from the multiband model. ABSTRACTRemotely sensed bathymetry in the vicinity of Vieques Island and Key West, Florida is performed using Landsat Thematic Mapper imagery and a multiband model. Previous bathymetric algorithms using a single band or a ratio of bands assumed a constant bottom reflectance and thus required a bottom-type classification to isolate areas of uniform reflectance. The multiband model described in this paper does not require homogenous bottom-types and yields somewhat improved results over older methods. Depths to 16 m are measured with RMS residuals of less than 2 m. Results using other algorithms will be compared to the results from the multiband model.

<title>Gram-Schmidt orthogonalization technique for atmospheric and sun glint correction of Landsat imagery</title>

“…is not homogeneous over the deep water and certainly the value derived from the deep water portion of the scene does not apply to the shallow portion of the scene where it is utilized. What is desired in using Equation (8) is the "correct" value of L00 for each pixel in the image. If we knew the constituent values given in Equation (4) the calculation would be trivial.…”

Satellite-derived bathymetry for shallow coastal waters in Cyprus

“…The assessment of depth through satellite data is named as Satellite-Derived-Bathymetry (SDB) and was appeared in the early of 1970s, when multiband satellite sensors such as the Landsat satellite began orbiting the Earth [6]. One of the active sensors, the Synthetic Aperture Radar (SAR), was used to estimate Bathymetry [7,8].…”