Publication:
Bathymetric mapping with QuickBird data

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Authors
Densham, Martin P. J.
Subjects
Advisors
Durkee, Philip A.
Thornton, Edward B.
Date of Issue
2005-09
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
Two algorithms are used to determine bathymetry in the littoral region using QuickBird multispectral satellite observations. The algorithms determine water-leaving radiance and convert this to water depth values. The first algorithm uses a ratio of two wavebands and the second uses the sum of several wavebands. Relative bathymetric errors are determined for the clear water of Looe Key (USA) and the turbid water of Plymouth Sound (UK). Bathymetric measurements from LIDAR and chart data are compared to derived depths to assess their accuracies. An amended version of the ratio method is proposed for use in turbid water to improve accuracy. The results show that the standard ratio and turbidity algorithms have a relative error of 11.7% and 16.5% respectively in clear water. In turbid water the average error of the turbidity algorithm is 11.6% and the amended ratio algorithm average error is 13%.
Type
Thesis
Description
Series/Report No
Department
Oceanography
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
xiv, 46 p. : ill. (chiefly col.)
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
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