A Case Study of Moving Sand Dunes: The Barchans of the Kharga Oasis

Abstract

Recently we have proposed the use of the time series of Google Earth to investigate the motion of sand dunes. In this paper we consider a case study, applying the method to some barchans of the Kharga Oasis. To evaluate the motion of these dunes as a function of their size we use Gimp, a GNU image processing software.