http://hdl.handle.net/123456789/23 2026-04-04T12:05:24Z http://hdl.handle.net/123456789/7548 The case of geo thermal energy from productive, depleted and abandoned oil and gas wells Humera Farah 2017-01-01T00:00:00Z http://hdl.handle.net/123456789/4928 Estimation of the seismic risk in major cities of Gangwon province, Korea using shear-wave velocities Abid Ali; Ki Young Kim 2016-01-01T00:00:00Z http://hdl.handle.net/123456789/5118 Health risk of arsenic in the alluvial aquifers of Lahore and Raiwind, Punjab Province, Pakistan: an investigation for safer well water Asif Javed; Sadia Bibi; Abida Farooqi; Mehwish Ramzan Environmental pollution has generated release of high amounts of arsenic (As) which ultimately are detected in the water of Indus Basin Punjab, Pakistan. The area is characterized by a semiarid climate, and alluvial deposits. This investigation, an extension of previously reported As-affected area in Lahore and Kasur, aimed to (1) assess the extent of water contamination in this area and (2) determine possible safer sites for future water use. In a comparative study, total As contamination of underground water from individual dwellings and community water supply of some villages located at the boundary of the Sheikhopura and Lahore districts, Pakistan were measured to compare with previously published data of villages located at the boundary of the Lahore and Kasur districts. The results showed variable levels of As in shallow drinking water wells and average concentration exceeding WHO guidelines value. As levels ranged from below 5.2 to 80 mg/L and mean 45.5 mg/L. The As concentrations were higher than WHO limits but lower than previous studied area. In addition, high salinity was found to be a serious concern for deteriorating groundwater quality rendering it unsuitable for drinking. Groundwater is predominantly of the Na HCO3 type with slightly alkaline pH. High pH values and competition of As with HCO3 may serve as an important process for mobilization of As in the shallow groundwater of the region. Continuous monitoring and expansion of monitoring systems are necessary to establish safer wells within As-contaminated areas 2015-01-01T00:00:00Z http://hdl.handle.net/123456789/5117 A spatio-temporal three-dimensional conceptualization and simulation of Dera Ismail Khan alluvial aquifer in visual MODFLOW: a case study from Pakistan Muhammad Zafar; Anwar Qadir; Tahseenullah Khan; Zulfiqar Ahmad; Atwar Qadir; Mamoru Murata Dera Ismail Khan (DIK) is situated in the Lower Indus Basin of Pakistan. The land use has been changed in the canal command area due to irrigation activities near the Indus River. To check the current status and predict the groundwater levels in the area, the unconfined aquifer has been simulated in VisualMODFLOWfor a period of 35 years, i.e., from 1985 to 2020. The 2900-km2 area has been modeled with a grid of 500 by 500 m and the depth set to 100 m. The aquifer in the study area has been divided vertically and laterally into three and ten zones, respectively, for the characterization. Water wells and streams were used as the sinks and hydrologic boundaries, respectively. The model was successfully calibrated in steady and the non-steady state. The simulation revealed that the whole simulation can be divided into two phases, i.e., before and after the construction of the Chashma Right Bank Canal (CRBC), whereas the results were summarized in the form of water table depth maps and groundwater budget calculations. To determine the groundwater sustainability, a conjunctive use scenario has been employed to simulate the aquifer dynamics 2015-01-01T00:00:00Z