# The Geometry of Parabolic Sand DunesArabic

Mathematics

Geometry

### Instructors

Associate Professor of Mathematics
Department of Mathematics and Statistics
King Fahd University of Petroleum and Minerals (KFUPM)
Dharan, Saudi Arabia

*This video was sponsored by Saudi Aramco and produced by Sultan Bin Abdel Aziz Science & Technology Center

## Introduction

One of the main problems facing Saudi Arabia and many other countries in the region is the movement of sand, which threatens the urban areas.  With the expansion of new installations and other projects, sand dune movement is costing governments a lot of money and energy. We shall shed some light on this problem and introduce students to some basic knowledge about this issue. This knowledge will include information related to dune movement, factors affecting their movement, the stabilization of dunes, and different types and shapes of dunes. We investigate a particular type of sand dunes, the barchan sand dune, and analyze its geometry and how to approximate its volume and what parameters are needed. For this lesson, students should have a solid exposure to both three-dimensional geometry and single variable calculus. The lesson could be completed in a 45-50-minute class period.

## Instructor Biography

Dr. Abu-Sbeih is Professor of Mathematics at King Fahd University of Petroleum and Minerals. Currently he is the Undergraduate Coordinator in the Mathematics and Statistics Department. His interest is in the area of combinatorics and graph theory, especially in enumeration and embedding problems. He also has an interest in math education. He enjoys spreading the culture of mathematics in the society to benefit all. Read more about him here

## For Teachers

Wikipedia: Dune
This Wikipedia site provides definitions and descriptions of different sand dune types.

Wikipedia: Sand dune stabilization
This Wikipedia site discusses the many aspects of sand dune stabilization.

SaharaSafaris: Sand Dunes
This site, sponsored by SaharaSafaris, is a good general information site and also provides the Arabic names of the several dune types.

U.S. Geologic Survey: Types of Dunes
This site, sponsored by the U.S. Geologic Survey, defines and describes five basic types of dunes: crescentic, linear, star, dome, and parabolic. Satellite photos of each type are included.

Edumedia Sciences: Sand dunes
This site, sponsored by Edumedia, presents an animation of the behavior of sand dunes.