Combined Geoelectrical Tomography (ERT/IP) Methods and Geoelectrical Parameters to Evaluate Groundwater in Qularaisi Area NW Sulaimani-Kurdistan Region-IRAQ | ||
| Iraqi National Journal of Earth Science (INJES) | ||
| Volume 23, Issue 1, June 2023, Pages 1-34 PDF (1.85 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.33899/earth.2023.135144.1024 | ||
| Authors | ||
| Ezzadin Baban* ; Abdulla Amin; Kwestan Ahmed | ||
| Abstract | ||
| Sixteen Electrical Resistivity Tomography (ERT / IP) traverses were conducted and correlated with pumping test data to estimate aquifer parameters in NW of Sulaimani. The length of traverses ranged from 310 to 400 m and the space between electrodes was 10 m. The first layer is characterized by a low-resistivity value which might be interpreted to silty and sandy clays or associated with the water-saturated bed range of the depth 0-20m.. While the second layer has higher ranges between 80 to 120 ohm.m with a depth of less than 20 m. and represented the variation of grain size sediment sand, silt, and gravel boulder, it is partially saturated with water. Several high-resistivity value features appear in the central part of most of the sections, at a depth below 20m. The third layer is considered a moderate-resistivity value which reflects a bed of silty marl bed of middle Tanjero Fn., this layer acts as an impermeable layer. Many relationships of hydraulic Dar Zarrouk aquifer parameters were extracted showing little variations of hydraulic parameters with the aquifer parameters due to the restriction of the area of study little variation in lithology, and the low of the well's production. The presence of the clay content is clearly visible in the porosity relation with aquifer resistivity of the middle Tanjero Fn. Moreover, the measurements of IP have been extremely successful in distinguishing between clay (with high chargeability and low resistivity) and water (for low chargeability and low resistivity). | ||
| Keywords | ||
| Electrical resistivity tomography,,; ,،,؛geoelectrical parameters,,; ,،,؛pumping test,,; ,،,؛Sulaimani,,; ,،,؛Iraq Kurdistan Region | ||
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