Locating regions of high probablility for groundwater in the Wadi EI-Arish Basin, Sinai, Egypt
✍ Scribed by Scot E. Smith; Ibrahim El-Shamy; Hesham Abd-El Monsef
- Book ID
- 104354195
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 941 KB
- Volume
- 25
- Category
- Article
- ISSN
- 1464-343X
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✦ Synopsis
A method which incorporates satellite imagery and a geographic information system (GIS) to detect areas of likely groundwater has been applied to the northern Sinai Penisula. The technique involves integration of bifurcation ratio, drainage density, stream frequency, slope and precipitation. The unique aspect of this research is both the use of Landsat satellite imagery and the study area itself. Aerial photography is normally used for delineation of the variables, but the unique desert environment of northern Sinai gave sufficient detail from satellite images. These physical features when combined in a GIS yield a highly reliable prediction of occurrence of groundwater sources. The results of the prediction map were compared with ground measurements based on vertical electrical sounding (VES) and the Shallow Seismic techniques. It was found that all of the areas predicted to yield groundwater had positive VES and Shallow Seismic readings. These results demonstrate that satellite remote sensing when used in a GIS can be a useful tool in detecting and mapping groundwater in a desert environment. R&rum&-Une methode qui incorpore la teledetection avec un systeme geographique informatise (SGI) pour deceler des zones d'eaux souterraines favorables, a et6 appliqu6e B la partie septentrionale de la P&insult du Sinai. La technique implique I'integration du rapport de bifurcation, de la densite du drainage, de la frequence des tours d'eau, de la pente et de la precipitation. L'aspect original de cette recherche est I'utilisation des images satellite Landsat et l'etude de la region ellem8me. La photographie aerienne est utilisee normalement pour tracer les variables, mais I'environment desertique unique du nord Sinai donne suffisamment de details sur les images satellites. Ces traits physiques, lorsqu'ils sont combines dans un SGI, donnent une t&s bonne prediction sur la presence d'eaux souterraines. Les resultats de la carte de prediction on tit6 compares aux meures faites sur le terrain basees sur des sondages Blectriques verticaux et des techniques sismiques peu profondes. Toutes le regions preuves comme ayant des eaux souterraines ont fourni des mesures Blectriques et sismiques positives. Ces resultats demontrent que la teledetection utilisee avec un systeme geographique informatise peut Qtre un outil utile pour la detection et la cartographic des eaux souterraines dans des regions desertiques.