SelectedWorks - Estella Atekwana

Selected Works of Estella Atekwana

Adjunct Professor

Works
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About Estella Atekwana

Present	Adjunct Professor, Missouri University of Science and Technology ‐ Geosciences and Geological and Petroleum Engineering
Institution Organization Position Type Position Title Time Period to Options Current Position Affiliate my profile with this Institution

Geological Engineering

1991	PhD, Dalhousie University
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Temporal Geophysical Investigations of the FT-2- Plume at the Wurtsmith ...

Proceedings of the 21st Symposium on the Application of Geophysics to Engineering and Environmental Problems (2008, Philadelphia, PA) (2008)

Ryan A. Joyce, C. Vukenkeng, Estella A. Atekwana, Eliot A. Atekwana, et al.

The decommissioned Wurtsmith Air Force Base former Fire Training Cell (FT-02) facility has been the focus of several geophysical investigations. ...

Hydrological Monitoring with Hybrid Sensor Networks

Proceedings of the International Conference on Sensor Technologies and Applications (2007, Valencia, Spain) (2007)

Thomas V. Freiberger, Sahra Sedigh and Estella A. Atekwana

Existing hydrological monitoring systems suffer from short- comings in accuracy, resolution, and scalability. Their fragility, high power consumption, and lack ...

Microbial Nanowires: Is the Subsurface "Hardwired"?

Geophysical Research Letters (2007)

Dimitrios Ntarlagiannis, Estella A. Atekwana, Eric A. Hill and Yuri A. Gorby

The Earth's shallow subsurface results from integrated biological, geochemical, and physical processes. Methods are sought to remotely assess these interactive ...

Early Structural Development of the Okavango Rift Zone, NW Botswana

Journal of African Earth Sciences (2007)

Baraka D. Kinabo, Estella A. Atekwana, John Patrick Hogan, Motsoptse P. Modisi, et al.

Aeromagnetic and gravity data collected across the Okavango rift zone, northwest Botswana are used to map the distribution of faults, ...

Subsurface Hydrological Monitoring of a Watershed with Hybrid Sensor Networks

Eos, Transactions, American Geophysical Union. Joint Assembly Supplement (2007)

John R. Koch, Sahra Sedigh and Estella A. Atekwana

This abstract describes novel instrumentation for in situ hydrological monitoring of watersheds. Our system autonomously measures various attributes of the ...

The Microbial Community Structure in Petroleum-Contaminated Sediments Corresponds to Geophysical ...

Applied and Environmental Microbiology (2007)

Jonathan P. Allen, Estella A. Atekwana, Eliot A. Atekwana, Joseph W. Duris, et al.

The interdependence between geoelectrical signatures at underground petroleum plumes and the structures of subsurface microbial communities was investigated. For sediments ...

Crustal Thickness, Poisson's ratio, and Moho Sharpness beneath the ...

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works (2007)

Moikwathai Moidaki, Stephen S. Gao, Kelly H. Liu and Estella A. Atekwana

The Mesoproterozoic Midcontinent rift (MCR) in the central US is an approximately 2000 km long, 100 km wide structure from ...

Potential Application of Biogeophysics to EOR and Remediation Investigations

SEG Technical Program Expanded Abstracts (2006)

Caroline A. Davis and Estella A. Atekwana

In this work we discuss the potential application of biogeophysical studies to enhanced oil recovery (EOR) and remediation. We present ...

Characterization of a Shallow Horizontal Fracturing Treatment in Western Missouri

Proceedings of the SPE Annual Technical Conference and Exhibition Focus on the Future (2006, San Antonio,TX) (2006)

Larry K. Britt, Shari Dunn-Norman, Maggie B. Smith, Estella A. Atekwana, et al.

Normally, the objective of hydraulic fracturing is to design and execute a fracture treatment that achieves the desired fracture dimensions ...

Microbial Growth and Biofilm Formation in Geologic Media Is Detected ...

Geophysical Research Letters (2006)

Caroline A. Davis, Estella A. Atekwana, Eliot A. Atekwana, Lee D. Slater, et al.

Complex conductivity measurements (0.1-1000 Hz) were obtained from biostimulated sand-packed columns to investigate the effect of microbial growth and biofilm ...

A Coupled Hydrogeological-Petrophysical Analysis of Geophysical Variations in the Vadose ...

Proceedings of the 19th Symposium on the Application of Geophysics to Engineering and Environmental Problems (2006, Seattle, WA) (2006)

Robert James Mickle, Anthony L. Endres and Estella A. Atekwana

This study compares fluid content profiles derived from high-resolution geophysical data acquired before and after a controlled light non-aqueous phase ...

Conductivity Profile Rate of Change from Field and Laboratory Data ...

Proceedings of the 19th Symposium on the Application of Geophysics to Engineering and Environmental Problems (2006, Seattle, WA) (2006)

D. Dale Werkema, Estella A. Atekwana and Eliot A. Atekwana

We present the results of long term (500 days) measurements of the bulk conductivity in a field and laboratory experiment. ...

Effect of Microbial Metabolic Byproducts on Electrical Properties of Unconsolidated ...

Proceedings of the 19th Symposium on the Application of Geophysics to Engineering and Environmental Problems (2006, Seattle, WA) (2006)

Gamal Z. Abdel Aal, Caroline A. Davis and Estella A. Atekwana

Recent laboratory and field studies have documented enhanced electrolytic and interfacial electrical properties of unconsolidated sediments due to microbial activity. ...

Investigating Dam Seepage using Geophysical Methods: Providing Hands-On Geophysical Experience ...

Proceedings of the 19th Symposium on the Application of Geophysics to Engineering and Environmental Problems: Geophysical Applications for Environmental and Engineering Hazzards - Advances and Constraints (2006, Seattle, WA) (2006)

Moikwathai Moidaki, David S. Heeszel, Khalid Ahmad, Lindsay E. Chasten, et al.

An electrical resistivity survey was carried out at an existing leaking dam site in Salem, Missouri. The purpose of the ...

Laboratory-Scale Investigation of the Effect of Microbial Growth on the ...

Proceedings of the 19th Symposium on the Application of Geophysics to Engineering and Environmental Problems (2006, Seattle, WA) (2006)

Caroline A. Davis, Estella A. Atekwana, Philip Bottrell, Joseph Heidenreich, et al.

We investigated the effect of microbial growth and biofilm formation on low-frequency complex conductivity in porous media. Understanding the direct ...

Induced-Polarization Measurements on Unconsolidated Sediments from a Site of Active ...

Geophysics (2006)

Gamal Z. Abdel Aal, Lee D. Slater and Estella A. Atekwana

To investigate the potential role that indigenous microorganisms and microbial processes may play in altering low frequency electrical properties, induced-polarization ...

Biogeophysics: The Effects of Microbial Processes on Geophysical Properties of ...

Applied Hydrogeophysics: Proceedings of the NATO Advanced Research Workshop on Soils and Groundwater Contamination (2006)

Estella A. Atekwana, D. Dale Werkema and Eliot A. Atekwana

The geologic record suggests the presence of microbes on Earth as early as the Precambrian (Hall-Stoodley et al., 2004). Microbes ...

Biodegradation and Mineral Weathering Controls on Bulk Electrical Conductivity in ...

Journal of Contaminant Hydrology (2005)

Eliot A. Atekwana, Estella A. Atekwana, Franklyn D. Legall and R. V. Krishnamurthy

Geochemical and stable carbon isotope data from closely spaced vertical intervals in a hydrocarbon-impacted aquifer were used to assess the ...

Evidence for Microbial Enhanced Electrical Conductivity in Hydrocarbon-Contaminated Sediments

Geophysical Research Letters (2004)

Estella A. Atekwana, Eliot A. Atekwana, D. Dale Werkema, Jonathan P. Allen, et al.

Bulk electrical conductivity of sediments during microbial mineralization of diesel was investigated in a mesoscale laboratory experiment consisting of biotic ...

Field Evidence for Geophysical Detection of Subsurface Zones of Enhanced ...

Geophysical Research Letters (2004)

Eliot A. Atekwana, Estella A. Atekwana, Franklyn D. Legall and R. V. Krishnamurthy

Geochemical data from closely spaced vertical intervals in a hydrocarbon-impacted aquifer were used to assess the relationship between bulk conductivity ...

Oh Take Me Out to the Field: Geological Excursions at ...

Proceedings of the 2004 Geological Society of America Annual Meeting (2004, Denver, CO) (2004)

John Patrick Hogan, Estella A. Atekwana, Shari Dunn-Norman, A. Curt Elmore, et al.

Geological field excursions are recognized to be an essential and necessary component of the undergraduate and graduate curriculum. This is ...

The Life Cycle of Continental Rifting as a Focus for ...

Eos, Transactions American Geophysical Union (2004)

Mohamed G. Abdel Salam, Estella A. Atekwana, G. Randy Keller and Simon L. Klemperer

The East African Rift System (EARS) provides the unique opportunity, found nowhere else on Earth, to investigate extensional processes from ...

The Relationship of Total Dissolved Solids Measurements to Bulk Electrical ...

Journal of Applied Geophysics (2004)

Eliot A. Atekwana, Estella A. Atekwana, Rebecca S. Rowe, D. Dale Werkema, et al.

A recent conceptual model links higher bulk conductivities at hydrocarbon impacted sites to higher total dissolved solids (TDS) resulting from ...

Effects of Microbial Processes on Electrolytic and Interfacial Electrical Properties ...

Geophysical Research Letters (2004)

Gamal Z. Abdal Aal, Estella A. Atekwana, Lee D. Slater and Eliot A. Atekwana

The effect of microbial processes on electrical properties of unconsolidated sediments was investigated in a laboratory experiment consisting of biotic ...

Effect of different phases of diesel biodegradation on low frequency ...

Symposium on the Application of geophysics to engineering and environmental problems (2004)

Gamal Z. Abdel Aal, Estella A. Atekwana, Lee D. Slater and Eliot A. Atekwana