Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Pays Bas → A gravity study of Northern Botswana : a new perspective and its implications for regional geology

International Institute for Geo-Information Science and Earth Observation (ITC) 2002

A gravity study of Northern Botswana : a new perspective and its implications for regional geology

Yawsangratt, Supawit

Titre : A gravity study of Northern Botswana : a new perspective and its implications for regional geology

Auteur : Yawsangratt, Supawit

Etablissement de soutenance : University of Twente International Institute for Geo-Information Science and Earth Observation (ITC)

Grade : Master of Science in Geo-Information Science and Earth Observation 2002

Résumé
A gravity survey in 1998-1999 were collected that filled in existing holes in data coverage of the 1972-1973 survey of northern Botswana. Improvements in data quality associated with precise positioning using differential GPS have lead to significant improvements in the quality of gravity data which result in the better definition of the regional geology. The colour composite map of apparent physical property can be calculated by combining the apparent density map and the apparent magnetic susceptibility map, after both map have been generated by specific calculation filters. The geological boundary has been visually interpreted from the colour composite map. Not only the interpreted boundary reveals more features than the features in the existing geological map, but also the comparison between old data and new data from the two dimensional spectrum analysis has shown the superiority of the new data set.

Version intégrale (ITC)

Page publiée le 30 janvier 2018