| Journal: | Geofísica internacional |
| Database: | PERIÓDICA |
| System number: | 000398408 |
| ISSN: | 0016-7169 |
| Authors: | Bayowa, Gabriel Oyelowo1 Falebita, Dele Ebenezer2 Adegboyesga, Raheem Olajide1 |
| Institutions: | 1Ladoke Akintola University of Technology, Department of Earth Sciences, Ogbomoso, Oyo. Nigeria 2Obafemi Awolowo University, Department of Geology, Ife, Osun. Nigeria |
| Year: | 2015 |
| Season: | Oct-Dic |
| Volumen: | 54 |
| Number: | 4 |
| Pages: | 343-352 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| Spanish abstract | DC resistividad superficial las técnicas se han utilizado para investigar las características del subsuelo torno un abandonado vertedero en Ido-Osun, suroeste de Nigeria. El objetivo es delinear contaminación de las aguas subterráneas, identificar las capas litológicas, localizar posibles lixiviados penachos de humo y evaluar el riesgo de contaminación de las aguas subterráneas. Sondeo eléctrico vertical Schlumberger (VES) y dipolo-dipolo resistividad perfiles de datos fueron adquiridos en 20 m y 10 m, respectivamente a lo largo de tres intervalos noroeste-sureste geofísicos recorre. La geoelï secciones reveló cuatro probables las capas subsuperficiales geoeléctricos que se consideraban de superior del suelo, laterita, capeado y roca fracturada y competente/roca con base en trabajos previos. La roca fracturada constituye la reserva de agua subterránea en la zona interpretado a partir del más del 98% de H, KH geoelï tipos de curva. El dipolo-dipolo secciones mostro zonas de baja resistividad que se extiende en el capeado/roca fracturada. Estos fueron interpretados como probable contaminante plume por debajo del vertedero |
| English abstract | Surface DC resistivity techniques have been used to investigate the subsoil characteristics around an abandoned dumpsite in Ido Osun, Southwestern Nigeria. The aim was to delineate groundwater contamination, identify lithologic layers, locate possible leachate plumes, and assess the risk of groundwater pollution. Schlumberger vertical electrical sounding (VES) and Dipole-dipole resistivity profiling data were acquired at 20 m and 10 m intervals respectively along three northwest-southeast geophysical traverses. The geoelectric sections revealed four probable subsurface geoelectric layers which were considered to be topsoil, laterite, weathered/ fractured bedrock and competent/fresh bedrock based on previous works. The weathered/ fractured bedrock forms the groundwater reservoir in the area as interpreted from the over 98% occurrence of H, KH geoelectric curve types. The dipole-dipole sections showed several distinct low resistivity zones which extends into the weathered/fractured bedrock. These were interpreted as probable contamination plumes beneath the dumpsite |
| Disciplines: | Geociencias |
| Keyword: | Geofísica, Hidrología, Aguas subterráneas, Vertederos, Contaminación, Nigeria |
| Keyword: | Earth sciences, Geophysics, Hydrology, Groundwater, Dumps, Contamination, Nigeria |
| Full text: | Texto completo (Ver HTML) |
