Mapping of sand dunessheetsaccumulations using remote sensing and their potential hazards in the new projects west of el-Kawamel Area, Sohag, Egypt

الملخص EN

Serious geological hazards have been recognized in the new development urban areas and road construction in west of El- Kawamel area, Sohag, Egypt.

These geological problems are due to the presence of sand dunes, sand sheets, and sand accumulations.

Three different types of sand dunes, sand sheets, and sand accumulations have been detected including, sand dunes (Barchan type), sand sheet (cover flat area), and sand accumulations (along the mountain slopes).

Three strip zones of sand dunes / sheets / accumulation were recognized and mapped by using remote sensing techniques.

Decorrelation stretch methods associated with parallelepiped image classification were the best techniques for mapping and isolating these sand dunes / sheets / accumulations.

Detailed field investigations showed that barchan dunes are dominant in zone 2 and sand sheets / accumulations in zone 1 and 3, also sand accumulations are dominated along the slopes of the cliffs and deposited behind the obstacles in the area.

Our findings showed that sand dunes / sheets / accumulation pose some geological hazards on roads, surrounding buildings and constructions in the new develop39ment areas.

Different remediation methods have been assigned to protect and minimize these geological hazards in the study area.