1. Department of Geography & GIS, Faculty of Arts, New Valley University, Kharga 72511, Egypt
2. British University in Egypt, Cairo 11837, Egypt
3. Department of Geography & GIS, Faculty of Arts, Ain Shams University, Cairo 11566, Egypt
4. Department of Archeology, Faculty of Arts, Helwan University, Cairo 11795, Egypt
5. Instituto Pirenaico de Ecología, CSIC, Campus de Aula Dei, 1005, 50059 Zaragoza, Spain