Relative Geoid of Central Sri Lanka

Abstract

Relative geoid of central Sri Lanka has been calculated adding contributions due to the Bouguer anomaly and topographic features over the region. A Fourier technique which makes use of fast Fourier algorithms was used to obtain the topographic component instead of classical gravimetric approach which is based on Stokes-Helmet method. These computations show that the relative geoid of central Sri Lanka is entirely positive with a maximum of 5.9 m close to Nuwara Eliya.