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Integration of VLF-EM and VES data for pavement failure investigation in a typical basement complex terrain of southwestern Nigeria Cover

Integration of VLF-EM and VES data for pavement failure investigation in a typical basement complex terrain of southwestern Nigeria

Open Access
|Aug 2023

Figures & Tables

Figure 1:

Location Map of The Study Area.
Location Map of The Study Area.

Figure 2:

Geological Map of Ado-Ekiti /Ikere-Ekiti Area, SW Nigeria.
Geological Map of Ado-Ekiti /Ikere-Ekiti Area, SW Nigeria.

Figure 3:

VLF-EM measurement of the study area.
VLF-EM measurement of the study area.

Figure 4:

VLF-EM Fraser Filtering Graph of the study area.
VLF-EM Fraser Filtering Graph of the study area.

Figure 5:

VLF-EM data (raw real and filtered real) of the study area.
VLF-EM data (raw real and filtered real) of the study area.

Figure 6:

VLF-EM 2D Inversion model of the study area.
VLF-EM 2D Inversion model of the study area.

Figure 7:

Typical resistivity type curves in the study area.
Typical resistivity type curves in the study area.

Figure 8:

Geoelectric section of segment I covering VES 1–4 along Ado-Ikere Road.
Geoelectric section of segment I covering VES 1–4 along Ado-Ikere Road.

Figure 9:

Geoelectric section of segment II covering VES 5–8 along Ado-Ikere Road.
Geoelectric section of segment II covering VES 5–8 along Ado-Ikere Road.

Figure 10:

Geoelectric section of segment III covering VES 9–12 along Ado-Ikere Road.
Geoelectric section of segment III covering VES 9–12 along Ado-Ikere Road.

The layer parameters and geoelectric characteristics_

VES No.Layer resistivity (Ωm)Layer thickness (m)Depth (m)Curve typesLithology
1288.4  0.5  0.5 Topsoil/Laterite
  76.614.515HClay
182.6-- Weathered layer
2138.4  0.9  0.9 Topsoil/Laterite
  36.2  3.1  4.0HClay
113.6-- Weathered layer
3  57.1  6.0  6.0 Topsoil/Laterite
119.3  2.1  8.2AClay
157.7-- Weathered layer
4208.3  0.5  0.5 Topsoil
307.2  1.1  1.6KQLateritic clay
102.8  2.0  3.6 Clay
100.8-- Weathered layer
5153.6  1.2  1.2 Topsoil
121.6  2.6  3.8QHLateritic clay
  64.7  8.412.2 Clay
208.2-- Weathered layer
6170.2  1.0  1.0 Topsoil
151.8  3.2  4.2QHLateritic clay
  57.0  4.0  8.2 Clay
126.5-- Weathered layer
7177.8  1.1  1.1 Topsoil
277.9  2.1  3.2KHLateritic clay
  48.0  4.2  7.4 Clay
170.0-- Weathered layer
8  88.7  0.8  0.8 Topsoil
180.1  4.0  4.8KHLateritic clay
  26.5  5.0  9.8 Clay
113.9-- Weathered layer
9289.0  0.4  0.4 Topsoil/Laterite
  66.4  1.9  2.3QClay
  62.1-- Weathered layer
10  94.9  9.9  9.9 Topsoil/Laterite
146.0  2.412.3AClay
229.6-- Weathered layer
11105.7  0.9  0.3 Topsoil/Laterite
  33.4  2.1  3.0HClay
149.8-- Weathered layer
12131.5  0.5  0.5 Topsoil/Laterite
  38.2  6.8  7.3HClay
377.9-- Weathered layer
Language: English
Page range: 105 - 117
Submitted on: Jul 9, 2022
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Accepted on: Oct 10, 2022
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Published on: Aug 28, 2023
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2023 Akintunde A. Oyedele, Musa A. Bawallah, Joshua T. Akinwamide, Stephen O. Ilugbo, Segun N. Ogunyebi, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.