Dr. Alexander Iheanyi Opara
Deputy DirectorFederal University of Technology, Nigeria
Highest Degree
Ph.D. in Applied Geophysics from University of Nigeria, Nigeria
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Area of Interest:
Selected Publications
- Ejiogu, B.C., A.I. Opara, E.I. Nwosu, O.K. Nwofor, J.C. Onyema and J.C. Chinaka, 2019. Estimates of aquifer geo-hydraulic and vulnerability characteristics of Imo State and environs, Southeastern Nigeria, using electrical conductivity data. Environ. Monit. Assess., 191: 238-238.
Direct Link | - Osaki, L.J., E.D. Uko and A.I. Opara, 2018. 3D geomechanical reservoir model for appraisal and development of emi-003 field in Niger Delta, Nigeria. Asian J. Applied Sci. Technol., 2: 276-294.
Direct Link | - Osaki, L.J and A.I. Opara, 2018. Quantitative petrophysical evaluation and reservoir characterization of well logs from “Datom” oil field, Niger Delta. Pet. Coal., 60: 656-670.
Direct Link | - Opara, A.I., V.U. Nwofor, H.N. Echetama, T.T. Emberga and G.E. Inyang, 2018. Magnetic basement depth and structure over parts of bida basin nigeria interpreted from 2-D spectral analysis and euler deconvolution. Aust. J. Basic Applied Sci., 12: 1-9.
CrossRef | Direct Link | - Opara, A.I., S.A. Chukwu, S.O. Onyekuru, A.C. Ekwe and C.N. Okereke et al., 2018. Reservoir characterization of the “bawi field, greater ughelli depobelt, Niger Delta, Nigeria using 3-D attributes assisted seismic interpretation. Pet. Coal, 60: 696-721.
Direct Link | - Opara, A.I., G.E. Odumosu, C.Z. Akaolisa, S.O. Onyekuru, T.T. Emberga and N.N. Onu, 2018. Basement depth re-evaluation and structural kinematic analysis of part of the middle benue trough using high resolution aeromagnetic data. Futo J. Ser., 4: 409-436.
Direct Link | - Opara, A.I., A.C. Ekwe, C.I. Egbujuo, A.G. Essien, O.P. Nosiri, M.O. Mbaegbu and A.C. Ibeabughichi, 2018. Estimation of hydraulic parameters from surface geo-electrical Data: A case study of orlu and environs, Imo river Basin, South Eastern Nigeria. Discovery Nat., 12: 32-46.
Direct Link | - Opara, A.I. and L.J. Osaki, 2018. 3-D seismic attribute analysis for enhanced prospect definition of "opu field'', coastal swamp depobelt Niger Delta, Nigeria. J. Applied Sci., 18: 86-102.
CrossRef | Direct Link | - Onyeuwaoma, N.D., T.C. Chineke, O.K. Nwofor, I. Crandell and O.O. Awe et al., 2018. Characterization of aerosol loading in urban and suburban locations: Impact on atmospheric extinction. Cogent Environ. Sci., Vol. 4. No. 1480333. .
Direct Link | - Ichu, B.C., A.I. Opara and F.C. Ibe, 2018. Contamination assessment of heavy metals in road dust of the University of Nigeria, Enugu campus, Southeastern Nigeria. Aust. J. Basic Applied Sci., 12: 1-8.
CrossRef | Direct Link | - Ibe, F.C., A.I. Opara, B.O. Ibe, B.C. Adindu and B.C. Ichu, 2018. Environmental and health implications of trace metal concentrations in street dusts around some electronic repair workshops in owerri municipal, Southeastern, Nigeria. Environ. Monit. Assess., 190: 696-696.
Direct Link | - Ekwe, A.C., A.I. Opara and O.S. Onwuka, 2018. Geoelectrical study of corrosivity and competence of soils within uburu and okposi areas of ebonyi State, Southeastern Nigeria. Anti-Corrosion Methods Mater., 65: 637-645.
CrossRef | Direct Link | - Egbujuo, C.I., M.A. Fullen, A.J.T. Guerra and A.I. Opera, 2018. Geochemical characterization of banana, buriti palm, jute and coir fibres for use as bio-geotextiles for erosion control. J. Environ. Eng. Landscape Manag., 26: 202-215.
CrossRef | Direct Link | - Choko, C.E., A.I. Opara and O.S. Adikwu, 2018. Delineation of saltwater intrusion zone in parts of eastern niger delta using resistivity and geochemical data. Int. J. Geophys. Geochem., 5: 27-39.
Direct Link | - Opara, A.I., C.C. Agoha, C.N. Okereke, U.P. Adiela, C.N. Onwubuariri, J.O. Okpono and O.P. Nosiri, 2017. Low velocity layer characterization in the Niger Delta: Implications for seismic reflection data quality. J. Geol. Soc. India, 90: 187-195.
CrossRef | Direct Link | - Opara, A.I., 2017. Overpressure and trap Integrity: Theory, principles and applications with case histories from the Niger Delta Basin, Nigeria. In: Advances in Petroleum Geosciences in Nigeria, Onuoha, K.M., (Ed.)., Chapter 8, University of Nigeria, Nigeria, pp: 55-75.
- Inyang, G.E., A.I. Opara, B.O. Ubechu, N.H. Gloria and E. Ndidiamaka et al., 2017. Geophysical appraisal of the aquifer geomaterials of Ugep and Environs, Southeastern, Nigeria using resistivity data. J. Geogr. Environ. Earth Sci. Int., 9: 1-24.
CrossRef | Direct Link | - Ibe, F.C., A.I. Opara, P.C. Njoku and J.I. Alinnor, 2017. Ambient air quality assessment of Orlu, Southeastern, Nigeria. J. Applied Sci., 17: 441-457.
CrossRef | Direct Link | - Ezemokwe, D.E., C.B. Ichu, J.N. Okoro and A.I. Opara, 2017. Evaluation of heavy metal contamination of soils alongside Awka-Enugu Road, Southeastern Nigeria. Asian J. Environ. Ecol., 4: 1-11.
CrossRef | Direct Link | - Ejiogu, B.C., A.I. Opara, O.K. Nwofor and E.I. Nwosu, 2017. Geochemical and bacteriological analyses of water resources prone to contamination from solid waste dumpsites in Imo State, Southeastern Nigeria. J. Environ. Sci. Technol., 10: 325-343.
CrossRef | Direct Link | - Dioha, E.C., O.C. Okeke, C.C.Z. Akaolisa, A.I. Opara, M.S. Shiru and O.C. Eigbike, 2017. Correlation of 1-D geoelectric data to delineate groundwater potential of Uli and Environs, Southeastern Nigeria. Int. J. Adv. Acad. Res. Sci. Technol. Eng., 3: 1-13.
- Paulinus, U.U., N.G. Ifedilichukwu, A.C. Ahamefula, O.A. Iheanyichukwu, E.T. Theophilus and I.G. Edet, 2016. Morphometric analysis of sub-watersheds in Oguta and Environs, Southeastern Nigeria using GIS and remote sensing data. J. Geosci. Geomatics, 4: 21-28.
CrossRef | Direct Link | - Osaki, L.J., A.I. Opara, C.N. Okereke, U.P. Adiela, I.O. Njoku, T.T. Emberga and N. Eluwa, 2016. 3-D seismic interpretation and volumetric estimation of Osaja Field Niger Delta, Nigeria. Int. Lett. Nat. Sci., 59: 14-28.
CrossRef | Direct Link | - Opara, A.I., F.C. Ibe, P.C. Njoku, J.I. Alinnor and C.K. Enenebeaku, 2016. Geospatial and geostatistical analyses of particulate matter (PM10) concentrations in Imo state, Nigeria. Int. Lett. Natl. Sci., 57: 89-107.
CrossRef | Direct Link | - Nwankwor, G.I., U.P. Udoka, B.C. Egboka and A.I. Opara, 2016. The mechanics of civil-works induced gully erosion: Applications to development of preventive measures in South Eastern Nigeria. Applied Ecol. Environ. Sci., 3: 60-65.
CrossRef | Direct Link | - Ibe, F.C., P.C. Njoku, J.I. Alinnor and A.I.Opara, 2016. Spatial variation of NO2 and SO2 in the ambient environment of Imo state, Nigeria. Int. J. Sci. Environ. Technol., 5: 33-46.
Direct Link | - Ibe, F.C., P.C. Njoku, J.I. Alinnor and A.I. Opara, 2016. Evaluation of Ambient air quality in parts of Imo state, Nigeria. Res. J. Chem. Sci., 6: 41-52.
Direct Link | - Emberga, T.T., A.I. Opara, S.O. Onyekuru and A.I.O. Selemo, 2016. Structural and tectonic interpretations from airborne aeromagnetic and landsat-ETM: A case study of the Yola arm of the Upper Benue Trough, Nigeria. Int. J. Sci. Res., 5: 1802-1808.
- Emberga, T.T., A.I. Opara, H.N. Echetama, O.P. Udoka and G.A. Inyang, 2016. Magnetic basement depth re-evaluation over the yola arm of the upper Benue Trough, Nigeria from 3-D euler deconvolution and spectral inversion of HRAM data. Int. J. Sci. Eng. Res., 7: 538-551.
Direct Link | - Chiemela, N.K., O.A. Iheanyi, O.S. Okechukwu, O.C. Njoku, E.T. Theophilus, U.E. Ikechukwu and I.K. Chidubem, 2016. Linear features interpreted over parts of the younger granite complex, North Central Nigeria using HRAM and LANDSAT‐ETM data. Arabian J. Earth Sci., 3: 35-36.
- Udoka, U.P., A.I. Opara, G.I. Nwankwor and O.O. Ebhuoma, 2015. Mapping land use and land cover in parts of the Niger Delta for effective planning and administration. Int. J. Scient. Eng. Res., 6: 274-281.
Direct Link | - Opara, A.I., T.T. Emberga, O.I. Oparaku, A.G. Essien and R.A. Onyewuchi et al., 2015. Magnetic basement depth re-evaluation of Naraguta and Environs North Central Nigeria, using 3-D euler deconvolution. Am. J. Mining Metall., 3: 29-42.
CrossRef | Direct Link | - Opara, A.I., S.O. Onyekuru, E.C. Mbagwu, T.T. Emberga, K.C. Ijeomah and K.C. Nwokocha, 2015. Integrating landsat-ETM and aeromagnetic data for enhanced structural interpretation over Naraguta area, North-Central Nigeria. Int. J. Scient. Eng. Res., 6: 186-195.
Direct Link | - Opara, A.I., S.O. Onyekuru, A.G. Essien, R.A. Onyewuchi, A.C. Okonkwo, T.T. Emberga and O.P. Nosiri, 2015. Lineament and tectonic interpretation over Abakiliki area: Evidences from airborne magnetic and landsat-ETM data. Int. J. Res. Innov. Earth Sci., 2: 111-121.
- Opara, A.I., R.L. Udoete, T.T. Emberga, H.N. Echetama and I.E. Ugwuegbu et al., 2015. Structural interpretation of the Jos-Bukuru younger granite ring complexes inferred from Landsat-TM data. J. Geosci. Geomatics, 3: 56-67.
CrossRef | Direct Link | - Opara, A.I., G.E. Inyang, S.O. Onyekuru, T.T. Emberga, A.C. Ekwe and D.R. Eke, 2015. Estimates of aquifer hydraulic characteristics and vulnerability from surface resistivity data: Case study of Ugep and Environs, Southeastern Nigeria. Int. J. Scient. Eng. Res., 6: 220-233.
Direct Link | - Onyekuru, S.O., K.D. Opara, C.J. Iwuagwu and A.I. Opara, 2015. Diagenetic study of sandstone sediments in parts of Anambra and Afikpo Basins, Southeastern Nigeria. FUTO J. Ser. (FUTOJNLS), 1: 316-331.
- Eke, D.R., A.I. Opara, G.E. Inyang, T.T. Emberga and H.N. Echetama et al., 2015. Hydrogeophysical evaluation and vulnerability assessment of shallow aquifers of the Upper Imo River Basin, Southeastern Nigeria. Am. J. Environ. Protect., 3: 125-136.
CrossRef | Direct Link | - Agoha, C.C., A.I. Opara, C.N. Okereke, C.N. Onwubuariri and T.T. Emberga et al., 2015. Weathered layer determination and its effects on engineering structures: Case study of parts of the Niger Delta. World J. Environ. Eng., 3: 40-51.
CrossRef | Direct Link | - Ugada, U., K.K. Ibe, C.Z. Akaolisa and A.I. Opara, 2014. Hydrogeophysical evaluation of aquifer hydraulic characteristics using surface geophysical data: A case study of Umuahia and Environs, Southeastern Nigeria. Arabian J. Geosci., 7: 5397-5408.
CrossRef | Direct Link | - Opara, A.I., R.A. Onyewuchi, A.O.I. Selemo, S.O. Onyekuru and B.O. Ubechu et al., 2014. Structural and tectonic interpretation of the aeromagnetic and landsat data over Ugep, Lower Benue Trough, Southeastern Nigeria. Mitteilungen Klosterneuburg, 64: 33-54.
- Opara, A.I., R.A. Onyewuchi, A.C. Okonkwo, O.P. Nosiri and T.T. Emberga, 2014. Structural interpretation of the Afikpo sub-basin: Evidences from airborne magnetic and Landsat ETM data. Elixir Earth Sci., 71: 24546-24552.
- Okonkwo, A.C., C.C. Ezeh, A.I. Opara, R.A.N. Nwatarali, M.S. Dimanyi and E. Enang, 2014. Using the Dar-Zarrouk concept to infer the subsurface lithological extent of Agbani Sandstone, Enugu State, Nigeria. Int. Res. J. Geol. Mining, 4: 29-36.
CrossRef | Direct Link | - Emberga, T.T., A.I. Opara, N.N. Onu, S.O. Onyekuru and A.I. Omenikolo, 2014. Structural and tectonic interpretations from airborne magnetic and landsat ETM data: A case study of Yola arm of the Upper Benue Trough, Nigeria. Int. J. Phys. Sci., 2: 345-360.
- Ugada, U., A. Opara, T. Emberga, F. Ibim, A. Omenikoro and E. Womuru, 2013. Delineation of shallow aquifers of Umuahia and Environs, Imo River Basin, Nigeria, using geo-sounding data. J. Water Resour. Protect., 5: 1097-1109.
CrossRef | Direct Link | - Opara, A.I., K.M. Onuoha, C. Anowai, N.N. Onu and R.O. Mbah, 2013. Geopressure and trap integrity predictions from 3-D seismic data: Case study of the Greater Ughelli Depobelt, Niger Delta. Oil Gas Sci. Technol., 68: 383-396.
CrossRef | Direct Link | - Okonkwo, A.C., P.O. Okeke and A.I. Opara, 2013. Evaluation of self-potential anomalies over sulphide ore deposits at Ishiagu, Ebonyi State, Southeastern Nigeria. Int. Res. J. Geol. Mining, 4: 9-19.
CrossRef | Direct Link | - Okonkwo, A.C., C.C. Ezeh and A.I. Opara, 2013. Estimates of aquifer transmissivity from specific capacity data in sandstone aquifers in Enugu State, Southeastern Nigeria. Int. Res. J. Geol. Mining, 3: 291-297.
CrossRef | Direct Link | - Ezekiel, J.C., N.N. Onu, C.Z. Akaolisa and A.I. Opara, 2013. Preliminary interpretation of gravity mapping over the Njaba sub-basin of Southeastern Nigeria: An implication to petroleum potential. J. Geol. Mining Res., 5: 75-78.
Direct Link | - Opara, A.I., S.A. Ugwu and R.A. Onyewuchi, 2012. Structural and tectonic interpretations from landsat 5 thematic imagery: Case study of Okposi Brinelake and Environs, Lower Benue Trough, Nigeria. Elixir Remote Sens., 49: 9708-9713.
Direct Link | - Opara, A.I., N.N. Onu and D.U. Okereafor, 2012. Geophysical sounding for the determination of aquifer hydraulic characteristics from Dar-Zurrock parameters: Case study of Ngor Okpala, Imo River Basin, Southeastern Nigeria. Pac. J. Sci. Technol., 13: 590-603.
Direct Link | - Opara, A.I., A.C. Ekwe, C.N. Okereke and O.P. Nosiri, 2012. Integrating airborne magnetic and landsat data for geologic interpretation over part of the Benin basin, Nigeria. Pac. J. Sci. Technol., 13: 556-571.
Direct Link | - Onyewuchi, R.A., A.I. Opara and F.U. Oko, 2012. Interpretation of structural and geomorphic features from aeromagnetic and landsat data: Case study of Nkalagu area, Southeastern Nigeria. Int. J. Sci. Technol., 2: 340-350.
- Onyekuru, S.O., A.I. Opara, A.E. Agumanu, A.A. Onunkwo, C.A. Ahiarakwem and K.K. Nwozor, 2012. A multi-technique evaluation of the groundwater resource potentials of Wuro Juli well field, Gombe subbasin, Upper Benue basin, Northeastern Nigeria. Elixir Int. J. Geosci., 50: 10266-10271.
Direct Link | - Onu, N.N. and A.I. Opara, 2012. Delineation of active linear features in a Gully Erosion zone using geophysical methods: Case study of the Okigwe-Umuahia Erosion Belt, Southeastern Nigeria. Int. J. Sci. Technol., 2: 350-360.
- Onu, N.N. and A.I. Opara, 2012. Analysis and characterization of Njaba River Gully Erosion, Southeastern Nigeria: Deductions from surface geophysical data. Aust. J. Basic Applied Sci., 6: 122-128.
Direct Link | - Okereke, C.N., N.N. Onu, K.K. Ibe, A.O.I. Selemo and A.I. Opara et al., 2012. Analysis of landsat and aeromagnetic data for mapping of linear structures: A case study of Yola area, Upper Benue Trough, Nigeria. Int. J. Eng. Res. Applic., 2: 1968-1977.
Direct Link | - Ekwe, A.C. and A.I. Opara, 2012. Aquifer transmissivity from surface geo-electrical data: A case study of Owerri and Environs, Southeastern Nigeria. J. Geol. Soc. India, 80: 123-128.
CrossRef | Direct Link | - Asedegbega, J., O. Okpoba, M. Omudu, G. Madiba, S. Olotu, N.N. Onu and A.I. Opara, 2012. Pore pressure prediction using 3-D seismic anisotropic velocity in central swamp of the Niger Delta. NAPE Bull., 24: 27-32.
- Ahiarakwem, C.A., G.I. Nwankwor and A.I. Opara, 2012. Self-purification potential of a tropical lake: Case study of Oguta Lake, Eastern Niger Delta Basin, Nigeria. Int. J. Emerg. Trends Eng. Dev., 1: 313-323.
- Ahiarakwem, C.A., G.I. Nwankwor and A.I. Opara, 2012. Constituent budget and flushing model of a tropical fresh water lake: Case study of Oguta Lake, Southeastern Nigeria. Elixir Pollut., 46: 8112-8116.
Direct Link | - Ahiarakwem, C.A. and A.I. Opara, 2012. Application of brine concentrations as a reconnaissance geochemical tool for hydrocarbon exploration: Case study of field X, OML63, coastal swamp 1 depobelt, Niger Delta Basin, Nigeria. Int. J. Sci. Technol., 2: 507-516.
Direct Link | - Opara, A.I., U.O. Anyiam and A.V. Nduka, 2011. 3-D seismic interpretation and structural analysis of Ossu oil field, Northern Depobelt, Onshore Niger Delta, Nigeria. Pac. J. Sci. Technol., 12: 502-509.
Direct Link | - Opara, A.I., 2011. Second vertical derivatives and trend surface analysis of the aeromagnetic data over part of the Benin Basin, Nigeria. Global J. Geol. Sci., 9: 19-26.
Direct Link | - Opara, A.I., 2011. Estimation of the depth to magnetic basement in part of the Dahomey Basin, Southwestern Nigeria. Aust. J. Basic Applied Sci., 5: 335-343.
Direct Link | - Opara, A.I., 2011. Estimation of multiple sources of overpressures using vertical effective stress approach: Case study of the Niger Delta, Nigeria. Pet. Coal, 53: 302-314.
- Ahiarakwem, C.A. and A.I. Opara, 2011. Some geochemical properties and industrial applications of lignite deposits: Case study of Orlu and environs, Imo State, Southeastern Nigeria. Int. J. Adv. Scient. Tech. Res., 2: 6-15.
Direct Link | - Opara, A.I., 2010. Prospectivity evaluation of Usso field, Onshore Niger Delta Basin, using 3-D seismic and well log data. Pet. Coal, 52: 307-315.
- Opara, A.I., 2010. Origin and generation mechanisms of geopressures in shale dominated settings world-wide: A review. Global J. Pure Applied Sci., 16: 429-438.
Direct Link | - Opara, A.I., K.M. Onuoha, S. Igbokwe, C. Anowai and N.N. Onu, 2008. A new velocity-effective stress model for estimating overpressure mechanisms besides compaction disequilibrium. NAPE Bull., 20: 17-23.
- Opara, A.I., K.M. Onuoha, C. Anowai, R.O. Mbah and N.N. Onu, 2008. Overpressure and trap integrity studies in parts of the Niger Delta Basin: Implications for hydrocarbon prospectivity. NAPE Bull., 20: 24-30.
- Opara, A.I. and N.N. Onu, 2006. The spectral determination of depths to buried magnetic rocks of the Lower Imo River Basin, Southeastern Nigeria. J. Sci. Eng. Technol., 13: 6675-6682.
- Opara, A.I., S.O. Onyekuru and K.I. Nwokei, 2004. Hydro-geochemical study of surface and groundwater systems in parts of Okigwe, Upper Imo River Basin, Southeastern Nigeria. J. Sci. Eng. Technol., 12: 6233-6242.