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Variation and uncertainty in bathymetric slope calculations using geographic information systems
journal contribution
posted on 2023-05-18, 01:17 authored by Dolan, MFJ, Vanessa LucieerVanessa LucieerBathymetry data from multibeam echosounders and other acoustic sources are now widely available in the form of digital terrain models, which are conveniently displayed as raster grids in desktop geographic information systems. Calculation of terrain variables such as slope is a simple push-button operation in most geographic information systems; however, as we demonstrate here, there can be a great variation in the slope values obtained due to computation algorithms and resolution or analysis scale. This article also demonstrates how Monte Carlo simulation can be used to visualise uncertainty in the underlying bathymetry dataset and also how this uncertainty impacts on slope calculations.
History
Publication title
Marine GeodesyVolume
37Pagination
187-219ISSN
0149-0419Department/School
Institute for Marine and Antarctic StudiesPublisher
Taylor & Francis GroupPlace of publication
NorwayRights statement
Copyright 2014 Taylor and FrancisRepository Status
- Restricted