الفهرس 
المقدمةيوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
The Study area is located east Sina peninsula , and is the largest drainage basins flowing into the Gulf of Aqaba , the area located between latitudes °28 ́46 , °29 ́33 N , and between longitudes °33 53 , °34 43 E , and limits the drainage basin from the north Jerafa valley and El-Arish valley , and on the west bounded basins El-Arish and Sedre and Firan , from the south basins Alrsash and Dahab , from the east bounded some small valleys flowing into the Gulf of Aqaba, and the study consists of eight chapters preceded by an introduction and conclusion followed by references and a list of Arab and foreign sources.
The Aim of this study: Study geomorphological controls affecting the origins and evolution of alluvial fans , and study the most important features on the alluvial fans surface, and make classification of alluvial fans in the study area , and study the economics of alluvail fans in the study area .
the most important results of the study: , multiplicity and variety of controls affecting the origins and evolution of alluvail fans in terms of source and location and the role they play in the genesis and evolution of alluvial fans . and can be divided into internal controls such as (rock factor, hydrological situation, the characteristics of drainage basins, vegetation) and external controls such as (climatic factor, factor structure, sea level changes ) .