WIT Press

A Comparison Of Interpolation Methods For Processing Randomly Scattered Bathymetric Data

Price

Free (open access)

Paper DOI

10.2495/CE990031

Volume

43

Pages

10

Published

1999

Size

881 kb

Author(s)

L.J. Scott & R.W. Barber

Abstract

As part of the development of a hydrodynamic model of a natural water body, spot depths must be assigned to all nodes of the computational mesh. This paper presents the results of a comparative study of three basic techniques, offered by Thompson & Johnson*, for interpolating between scattered surveyed depth points onto a two- dimensional grid. The methods considered are bilinear interpolation, inverse-power interpolation and Taylor series interpolation. The accuracy of each method when applied to analytical surfaces was

Keywords