Journal article Open Access

Delineation of Oil – Polluted Sites in Ibeno LGA, Nigeria, Using Geophysical Techniques

Ime R. Udotong; Justina I. R. Udotong; Ofonime U. M. John

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<oai_dc:dc xmlns:dc="" xmlns:oai_dc="" xmlns:xsi="" xsi:schemaLocation="">
  <dc:creator>Ime R. Udotong</dc:creator>
  <dc:creator>Justina I. R. Udotong</dc:creator>
  <dc:creator>Ofonime U. M. John</dc:creator>
  <dc:description>Ibeno, Nigeria hosts the operational base of Mobil
Producing Nigeria Unlimited (MPNU), a subsidiary of ExxonMobil
and the current highest oil &amp; condensate producer in Nigeria. Besides
MPNU, other oil companies operate onshore, on the continental shelf
and deep offshore of the Atlantic Ocean in Ibeno, Nigeria. This study
was designed to delineate oil polluted sites in Ibeno, Nigeria using
geophysical methods of electrical resistivity (ER) and ground
penetrating radar (GPR). Results obtained revealed that there have
been hydrocarbon contaminations of this environment by past crude
oil spills as observed from high resistivity values and GPR profiles
which clearly show the distribution, thickness and lateral extent of
hydrocarbon contamination as represented on the radargram reflector
tones. Contaminations were of varying degrees, ranging from slight
to high, indicating levels of substantial attenuation of crude oil
contamination over time. Moreover, the display of relatively lower
resistivities of locations outside the impacted areas compared to
resistivity values within the impacted areas and the 3-D Cartesian
images of oil contaminant plume depicted by red, light brown and
magenta for high, low and very low oil impacted areas, respectively
confirmed significant recent pollution of the study area with crude
  <dc:subject>Electrical resistivity</dc:subject>
  <dc:subject>geophysical investigations</dc:subject>
  <dc:subject>ground penetrating radar</dc:subject>
  <dc:subject>oil-polluted sites.</dc:subject>
  <dc:title>Delineation of Oil – Polluted Sites in Ibeno LGA, Nigeria, Using Geophysical Techniques</dc:title>
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