Science Links Japan | The Evaluation of Electrical Prospecting 1D Method Applied to Groundwater Exploration in Pasig-Potrero River Basin, Pampanga, Philippines.

The Evaluation of Electrical Prospecting 1D Method Applied to Groundwater Exploration in Pasig-Potrero River Basin, Pampanga, Philippines.

Accession number;02A0834398

Title;The Evaluation of Electrical Prospecting 1D Method Applied to Groundwater Exploration in Pasig-Potrero River Basin, Pampanga, Philippines.

Author; HIRAIDE SHIGENOBU (Grad. Sch. at Nagatsuta Tokyo Inst. of Technol.) COLLADO M B (Bureau Of Soil And Water Management, Phl) RONDAL J D (Bureau Of Soil And Water Management, Phl) SUZUKI KOICHI (Cent. Res. Inst. of Electr. Power Ind.) MORISHIMA WATARU (Tokyo Metropolitan Univ., Graduate School of Sci., JPN) WATANABE MAKIKO (Grad. Sch. at Nagatsuta Tokyo Inst. of Technol.) KINUGASA YOSHIHIRO (Grad. Sch. at Nagatsuta Tokyo Inst. of Technol.)

Journal Title;Journal of the Japan Society of Engineering Geology

Journal Code:G0269B

ISSN:0286-7737

VOL.43;NO.4;PAGE.239-243(2002)

Figure&Table&Reference;FIG.6, TBL.3, REF.3

Pub. Country;Japan

Language;Japanese

Abstract;1991 Mt. Pinatubo eruption has caused changes of groundwater in Mt. Pinatubo area. A simple and valid method is demanded to estimate groundwater level for the development of shallow well irrigation system. HIRAIDE et al. (2001) reported that electrical exploration could be applied to investigate groundwater in Pasig-Potrero river area. This study aims to discuss the evaluation of electrical prospecting 1D method (.RHO.-a method) for a feasible groundwater exploration method. Boring and measurement of groundwater level were performed to verify the precision of groundwater estimation by electrical prospecting 1D method. The results obtained in this study are summarized as follows. 1) Boring investigation proved that one dimension sounding (.RHO.-a method) was able to estimate geological stratum and groundwater level. 2) Repeating measurement conducted in the same site revealed that exploration results from one dimension sounding were reproducible regardless of rainfall. 3) From the comparison of analytical data for both wet and dry season, it is clarified that electrical prospecting 1D method is precise enough to use in full season as a practical method for estimating groundwater level. The accuracy of estimated groundwater level was obtained as 1.1-1.2m. (author abst.)

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