Geophysical assessment of open dumpsite nearby Khamis Mushait industrial zone, Southwestern Saudi Arabia
Vertical electrical soundings, seismic refraction tomography, and ground magnetic measurements were taken or conducted close to an open dumpsite near Khamis Mushait, southwestern Saudi Arabia, which is characterized by shallow groundwater conditions. Structurally, intersected series of north- to nor...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-09-01
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| Series: | Journal of King Saud University: Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1018364721001798 |
| _version_ | 1819083893235515392 |
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| author | Ali Y. Kahal Kamal Abdelrahman Hussain J. Alfaifi Saleh Qaysi Ahmed Nasser Aldossari |
| author_facet | Ali Y. Kahal Kamal Abdelrahman Hussain J. Alfaifi Saleh Qaysi Ahmed Nasser Aldossari |
| author_sort | Ali Y. Kahal |
| collection | DOAJ |
| description | Vertical electrical soundings, seismic refraction tomography, and ground magnetic measurements were taken or conducted close to an open dumpsite near Khamis Mushait, southwestern Saudi Arabia, which is characterized by shallow groundwater conditions. Structurally, intersected series of north- to northwest-trending faults affect the area. A new urban expansion and the Khamis Mushait industrial zone are close to the open dumpsite. This study evaluates the potential for leachate intrusion into groundwater aquifers. The results of electrical soundings reveal four geoelectric units: the topsoil, weathered layer, partly weathered/fractured basement, and fresh basement bedrock. At the dumpsite, relatively low resistivity values that are less than 30 Ωm characterize the topsoil, weathered layer, and partly weathered/fractured basement because of conductive leachate from the dumpsite. Besides, the results of ground magnetic data indicate that the deformation of varying intensities affects the dumpsite area, resulting in fractures developing in the N–S, NE–SW, NW–SE, and, to a lesser extent, E–W directions. Moreover, geoseismic tomographic models illustrate a low P-wave velocity zone corresponding to a low resistivity zone, and a NE–SW fault was identified from geoseismic cross-sections. Finally, these fractures and faults could become contaminant pathways for shallow aquifers around the dumpsite. To minimize the impact of such leachate, from a dumpsite, on groundwater quality and the environment in general, the dumpsite must be properly designed, constructed, and managed using engineering principles. |
| first_indexed | 2024-12-21T20:39:48Z |
| format | Article |
| id | doaj.art-2a61e484bb0e4e4db0dd4991532b16fa |
| institution | Directory Open Access Journal |
| issn | 1018-3647 |
| language | English |
| last_indexed | 2024-12-21T20:39:48Z |
| publishDate | 2021-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of King Saud University: Science |
| spelling | doaj.art-2a61e484bb0e4e4db0dd4991532b16fa2022-12-21T18:50:59ZengElsevierJournal of King Saud University: Science1018-36472021-09-01336101518Geophysical assessment of open dumpsite nearby Khamis Mushait industrial zone, Southwestern Saudi ArabiaAli Y. Kahal0Kamal Abdelrahman1Hussain J. Alfaifi2Saleh Qaysi3Ahmed Nasser Aldossari4Department of Geology and Geophysics, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaDepartment of Geology and Geophysics, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; Seismology Department, National Research Institute of Astronomy and Geophysics, EL Marsad Street 1, Helwan, Cairo, EgyptDepartment of Geology and Geophysics, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaDepartment of Geology and Geophysics, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi ArabiaDepartment of Geology and Geophysics, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; Corresponding author.Vertical electrical soundings, seismic refraction tomography, and ground magnetic measurements were taken or conducted close to an open dumpsite near Khamis Mushait, southwestern Saudi Arabia, which is characterized by shallow groundwater conditions. Structurally, intersected series of north- to northwest-trending faults affect the area. A new urban expansion and the Khamis Mushait industrial zone are close to the open dumpsite. This study evaluates the potential for leachate intrusion into groundwater aquifers. The results of electrical soundings reveal four geoelectric units: the topsoil, weathered layer, partly weathered/fractured basement, and fresh basement bedrock. At the dumpsite, relatively low resistivity values that are less than 30 Ωm characterize the topsoil, weathered layer, and partly weathered/fractured basement because of conductive leachate from the dumpsite. Besides, the results of ground magnetic data indicate that the deformation of varying intensities affects the dumpsite area, resulting in fractures developing in the N–S, NE–SW, NW–SE, and, to a lesser extent, E–W directions. Moreover, geoseismic tomographic models illustrate a low P-wave velocity zone corresponding to a low resistivity zone, and a NE–SW fault was identified from geoseismic cross-sections. Finally, these fractures and faults could become contaminant pathways for shallow aquifers around the dumpsite. To minimize the impact of such leachate, from a dumpsite, on groundwater quality and the environment in general, the dumpsite must be properly designed, constructed, and managed using engineering principles.http://www.sciencedirect.com/science/article/pii/S1018364721001798Seismic tomographyVertical electrical sounding (VES)MagneticKhamis MushaitSaudi Arabia |
| spellingShingle | Ali Y. Kahal Kamal Abdelrahman Hussain J. Alfaifi Saleh Qaysi Ahmed Nasser Aldossari Geophysical assessment of open dumpsite nearby Khamis Mushait industrial zone, Southwestern Saudi Arabia Journal of King Saud University: Science Seismic tomography Vertical electrical sounding (VES) Magnetic Khamis Mushait Saudi Arabia |
| title | Geophysical assessment of open dumpsite nearby Khamis Mushait industrial zone, Southwestern Saudi Arabia |
| title_full | Geophysical assessment of open dumpsite nearby Khamis Mushait industrial zone, Southwestern Saudi Arabia |
| title_fullStr | Geophysical assessment of open dumpsite nearby Khamis Mushait industrial zone, Southwestern Saudi Arabia |
| title_full_unstemmed | Geophysical assessment of open dumpsite nearby Khamis Mushait industrial zone, Southwestern Saudi Arabia |
| title_short | Geophysical assessment of open dumpsite nearby Khamis Mushait industrial zone, Southwestern Saudi Arabia |
| title_sort | geophysical assessment of open dumpsite nearby khamis mushait industrial zone southwestern saudi arabia |
| topic | Seismic tomography Vertical electrical sounding (VES) Magnetic Khamis Mushait Saudi Arabia |
| url | http://www.sciencedirect.com/science/article/pii/S1018364721001798 |
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