ARTIFICIAL ANALYTIC SURFACES AS A WAY TO ASSESS BATHYMETRIC DATA PROCESSING STRATEGIES

Abstract

Reservoirs perform a very important role in the management and planning of water and energy resources of many countries, as Brazil. The storage capacity of a reservoir is directly influenced by erosion processes that occur on its banks and tributaries. Therefore, bathymetric surveys must be conducted for checking the current situation of the reservoirs. In the development of Numerical Elevation Models (NEM), which aim at reproducing the bed surface of a reservoir, the amount and distribution of points that will be collected should be carefully established. The present paper addresses the evaluation of some settings of geometric distributions of points and interpolation algorithms. Trend interpolator showed the smallest volume differences for the circumstances proposed in the study, whereas IDW interpolator exhibited the largest differences. Keywords: Bathymetry; Interpolation; Digital Elevation Model.