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Abstract
The present study mainly aims to outline zones that have groundwater potentiality with good quality and those which are affected by sea water intrusion. The electrical resistivity data were acquired over an area of about 170 km2 of a coastal plain, Wadi Thuwal, which is bounded by the Red Sea in the west and the volcanic hills in the east. In such an area, resistivity measurements, using n-layering model, reveal generally reveal a wide range of resistivity values which do not reflect the reality. Hence, the statistical analysis has to be involved to overcome this problem and to make the final interpretation reliable. In our case, the n-layer models were modified to another statistical geoelectric models (SLM), consisting of a number of layers equivalent to the stratigraphic layering beneath each VES site. The modified models were used to outline the depth to the bed rock, groundwater accumulation zones and water table as well as to define the effect of sea water intrusion through the study area. Check alignment above
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References
- ABDULWAHID, M. (unpublished data), Geology and structural framework of Harrat Thuwal, North of Jeddah, Saudi Arabia.
- AL-GARNI, M.A. 1996. Direct current resistivity investigation of groundwater in the lower Mesilla Valley, New Mexico and Texas: MS thesis, Colorado School of Mines, 120 p.
- AL-GARNI, M.A., EL-BEHIRY, M.G, GOBASHY, M.M, HASSANEIN, H.I., and EL-KALIOUBY, H.M. 2009. Geophysical studies to assess groundwater potentiality and quality at Wadi Thuwal area, North of Jedda, KSA. King Abdulaziz City for Science and Technology, project No. At-26-82, p 394.
- CHOUDHURY, K., SAHA, D.K., and CHAKRABORTY, P. 2001. Geophysical study for saline water intrusion in a coastal alluvial terrain. J. Apllied Geophy., 46: 189-200.
- CLARK, P. AND EVANS F. 1954. Distance to nearest neighbor as a measure of spatial relationships in populations. Ecology, 35: 445-453.
- CRESSIE, N. A. C. 1991. Statistics for Spatial Data. John Wiley & Sons Inc., New York.
- EL-WAHEIDI, M.M., MERLANTI, F., and PAVAN, M. 1992. Geoelectrical resistivity survey of the central part of Azraq plain (Jordan) for indentifying saltwater/freshwater interface. J. Applied Geophy., 29: 125-133.
- KESSELS, W., FLENTGEH, I., KOLDITZ, H. 1985. DC geoelectric sounding to determine water content in the salt mine asse (FRG). Geophysical Prospecting, 33: 456-446.
- KING, RONALD S. and BRYANT JULSTROM. 1982. Applied Statistics Using the Computer. Alfred Publishing Company, Sherman Oaks, California.
- Montgomery, D.C. and Runger G.C. 1994. Applied Statistics and Probability for Engineers. John Wiley & Sons Inc., New York.
- ZOHDY. A.A.R. 1989. A new method for the automatic interpretation of Schlumberger and Wenner sounding curves. Geophysics, 54: 245-253.
References
ABDULWAHID, M. (unpublished data), Geology and structural framework of Harrat Thuwal, North of Jeddah, Saudi Arabia.
AL-GARNI, M.A. 1996. Direct current resistivity investigation of groundwater in the lower Mesilla Valley, New Mexico and Texas: MS thesis, Colorado School of Mines, 120 p.
AL-GARNI, M.A., EL-BEHIRY, M.G, GOBASHY, M.M, HASSANEIN, H.I., and EL-KALIOUBY, H.M. 2009. Geophysical studies to assess groundwater potentiality and quality at Wadi Thuwal area, North of Jedda, KSA. King Abdulaziz City for Science and Technology, project No. At-26-82, p 394.
CHOUDHURY, K., SAHA, D.K., and CHAKRABORTY, P. 2001. Geophysical study for saline water intrusion in a coastal alluvial terrain. J. Apllied Geophy., 46: 189-200.
CLARK, P. AND EVANS F. 1954. Distance to nearest neighbor as a measure of spatial relationships in populations. Ecology, 35: 445-453.
CRESSIE, N. A. C. 1991. Statistics for Spatial Data. John Wiley & Sons Inc., New York.
EL-WAHEIDI, M.M., MERLANTI, F., and PAVAN, M. 1992. Geoelectrical resistivity survey of the central part of Azraq plain (Jordan) for indentifying saltwater/freshwater interface. J. Applied Geophy., 29: 125-133.
KESSELS, W., FLENTGEH, I., KOLDITZ, H. 1985. DC geoelectric sounding to determine water content in the salt mine asse (FRG). Geophysical Prospecting, 33: 456-446.
KING, RONALD S. and BRYANT JULSTROM. 1982. Applied Statistics Using the Computer. Alfred Publishing Company, Sherman Oaks, California.
Montgomery, D.C. and Runger G.C. 1994. Applied Statistics and Probability for Engineers. John Wiley & Sons Inc., New York.
ZOHDY. A.A.R. 1989. A new method for the automatic interpretation of Schlumberger and Wenner sounding curves. Geophysics, 54: 245-253.