**Author details**

Mohamed Daoudi1 \* and Abdoul Jelil Niang2

1 Department of Geography and GIS, Faculty of Arts and Humanities, King Abdulaziz University, Jeddah, Saudi Arabia

2 Department of Geography, College of Social Sciences, Umm Al-Qura University, Makkah Al-Mukarramah, Saudi Arabia

\*Address all correspondence to: mdaoudi@kau.edu.sa

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
