Geophysical Investigation of the Impact of Solid Waste Dump on Subsurface Soil and Groundwater in Eneka, Rivers State Nigeria
The geophysical electrical method was used to investigate how the refuse dump in Eneka (Rivers State, Nigeria) affects the subsurface soil and groundwater within its environs. The research was carried out applying Wenner and Schlumberger array configurations of electrical resistivity techniques to i...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
VSB-Technical University of Ostrava
2020-09-01
|
| Series: | GeoScience Engineering |
| Subjects: | |
| Online Access: | http://gse.vsb.cz/ojs/index.php/GSE/article/view/307/209 |
| _version_ | 1818257733833457664 |
|---|---|
| author | Cyril NWANKWO Mark OGORO |
| author_facet | Cyril NWANKWO Mark OGORO |
| author_sort | Cyril NWANKWO |
| collection | DOAJ |
| description | The geophysical electrical method was used to investigate how the refuse dump in Eneka (Rivers State, Nigeria) affects the subsurface soil and groundwater within its environs. The research was carried out applying Wenner and Schlumberger array configurations of electrical resistivity techniques to image the subsurface resistivity within the area using ABEM SAS 300 Terrameter. A total of ten locations were investigated and the measured data across the profiles were processed using RES2DINV and ArcGIS 10.4 computer iterative software. The resulting inverse resistivity model isolated three resistivity zones (anomalously low, intermediate and high resistivity). The anomalously low resistivity zone was interpreted as contaminant leachate plumes and landfill gases from the dump area was observed to have travelled to depths of 14 m below the surface and over 30 m distance eastwards from the dump site, showing the tendency of farm land and crops pollution. However, the aquifer layer in the area estimated at the depth of 40 m may not have been contaminated. The spatial trend of almost all the resistivity values measured at equidistance reveals low value for lines 3 and 4 (which are farther away from the dump site) at the beginning and high value at the end and vice versa for lines 1 and 2. At the rate at which the leachate has infiltrated the subsurface the aquifer within the area is likely to be contaminated in the future if adequate measures are not taken. |
| first_indexed | 2024-12-12T17:48:21Z |
| format | Article |
| id | doaj.art-6deb5f3b7e70436ba5403d4dc3f08ec1 |
| institution | Directory Open Access Journal |
| issn | 1802-5420 |
| language | English |
| last_indexed | 2024-12-12T17:48:21Z |
| publishDate | 2020-09-01 |
| publisher | VSB-Technical University of Ostrava |
| record_format | Article |
| series | GeoScience Engineering |
| spelling | doaj.art-6deb5f3b7e70436ba5403d4dc3f08ec12022-12-22T00:16:52ZengVSB-Technical University of OstravaGeoScience Engineering1802-54202020-09-0166312113510.35180/gse-2020-0037Geophysical Investigation of the Impact of Solid Waste Dump on Subsurface Soil and Groundwater in Eneka, Rivers State NigeriaCyril NWANKWO0Mark OGORO1University of Port Harcourt, Department of Physics, Nigeria University of Port Harcourt, Department of Geography and Environmental Management, Nigeria The geophysical electrical method was used to investigate how the refuse dump in Eneka (Rivers State, Nigeria) affects the subsurface soil and groundwater within its environs. The research was carried out applying Wenner and Schlumberger array configurations of electrical resistivity techniques to image the subsurface resistivity within the area using ABEM SAS 300 Terrameter. A total of ten locations were investigated and the measured data across the profiles were processed using RES2DINV and ArcGIS 10.4 computer iterative software. The resulting inverse resistivity model isolated three resistivity zones (anomalously low, intermediate and high resistivity). The anomalously low resistivity zone was interpreted as contaminant leachate plumes and landfill gases from the dump area was observed to have travelled to depths of 14 m below the surface and over 30 m distance eastwards from the dump site, showing the tendency of farm land and crops pollution. However, the aquifer layer in the area estimated at the depth of 40 m may not have been contaminated. The spatial trend of almost all the resistivity values measured at equidistance reveals low value for lines 3 and 4 (which are farther away from the dump site) at the beginning and high value at the end and vice versa for lines 1 and 2. At the rate at which the leachate has infiltrated the subsurface the aquifer within the area is likely to be contaminated in the future if adequate measures are not taken.http://gse.vsb.cz/ojs/index.php/GSE/article/view/307/209dump site; electrical resistivity; eneka; groundwater; leachate plume |
| spellingShingle | Cyril NWANKWO Mark OGORO Geophysical Investigation of the Impact of Solid Waste Dump on Subsurface Soil and Groundwater in Eneka, Rivers State Nigeria GeoScience Engineering dump site; electrical resistivity; eneka; groundwater; leachate plume |
| title | Geophysical Investigation of the Impact of Solid Waste Dump on Subsurface Soil and Groundwater in Eneka, Rivers State Nigeria |
| title_full | Geophysical Investigation of the Impact of Solid Waste Dump on Subsurface Soil and Groundwater in Eneka, Rivers State Nigeria |
| title_fullStr | Geophysical Investigation of the Impact of Solid Waste Dump on Subsurface Soil and Groundwater in Eneka, Rivers State Nigeria |
| title_full_unstemmed | Geophysical Investigation of the Impact of Solid Waste Dump on Subsurface Soil and Groundwater in Eneka, Rivers State Nigeria |
| title_short | Geophysical Investigation of the Impact of Solid Waste Dump on Subsurface Soil and Groundwater in Eneka, Rivers State Nigeria |
| title_sort | geophysical investigation of the impact of solid waste dump on subsurface soil and groundwater in eneka rivers state nigeria |
| topic | dump site; electrical resistivity; eneka; groundwater; leachate plume |
| url | http://gse.vsb.cz/ojs/index.php/GSE/article/view/307/209 |
| work_keys_str_mv | AT cyrilnwankwo geophysicalinvestigationoftheimpactofsolidwastedumponsubsurfacesoilandgroundwaterinenekariversstatenigeria AT markogoro geophysicalinvestigationoftheimpactofsolidwastedumponsubsurfacesoilandgroundwaterinenekariversstatenigeria |