Much is still unknown about the processes responsible for the intraplate seismicity in the central and eastern United States, the spatial distribution of subsurface material properties, or the specific geometry and earthquake potential of subsurface faults, including the presence of deep crustal structures that may also be geologically active but are currently aseismic. In addition, accurate estimates of seismic hazard for two most active intraplate seismic zones in the region, the New Madrid Seismic Zone (NMSZ) and Eastern Tennessee Seismic Zone (ETSZ), must account for significant 3D effects of seismic wave propagation, including complexities due to subsurface spatial distribution of seismic velocity and anisotropy. This project will utilize extensive seismic data sets consisting of earthquakes recorded by the regional networks, temporary seismic stations, earthquake P and S wave arrivals from the short-period PANDA experiment in 1989-1992, and a growing catalog of earthquake P and S arrivals recorded by the CERI cooperative network to image detailed 3D velocity structure for both P- and S-waves within the NMSZ and ETSZ. Parts of the NMSZ and ETSZ identified by tomography as having anomalous P- or S-wave upper crustal velocity will be further studied using potential field studies and shear-wave splitting technique that will help identify variations in fracture density and fluid pressure as well as fault-parallel fractures. Long term educational goals of the project are building the capacity for geophysical research at the Department of Environmental, Earth and Geospatial Sciences at the NCCU and furthering our partnership with the Center for Earthquake Research and Information (CERI) at the University of Memphis.
Most recent research results of CREST project 5 were presented at the 2010 NSF Joint Annual Meeting (June 6-9, Washington, DC), 2010 EGU General Asssembly...
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The Eastern Tennessee Seismic Zone (ETSZ) is an intraplate continental region located in the eastern part of North America and constitutes, after the New Madrid Seismic Zone, the second most active region of the continent east of the Rocky Mountains.
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Students:
Tolulope Agbaje, Teleseismic P-Wave Travel Time Residual Mapping in the Eastern Tennessee Seismic Zone
Sanja Knezevic Antonijevic, Analysis of November 3, 2010 Kraljevo Earthquake (Mw=5.4) and Its Aftershock Sequence
Jubril Davies, Bayesian Travel-Time Inversion for Earthquake Hypocentral Location
Marc Duchateler, Analysis of Haiti Earthquake (12 January 2010) from its Aftershock Sequence
Esezobor Kingsley, Detecting Deformation in the New Madrid Seismic Zone using Radar Interferometry
Paul Kuponiyi, Ambient Noise Cross-Correlation in the Eastern Tennessee Seismic Zone
Philip Martin, Shear wave splitting from local earthquakes in the New Madrid Seismic Zone
Carl Sterns, Digital Elevation Model Analysis in the Eastern Tennessee Seismic Zone
Motonrayo Akinpelu, graduated, MS in Earth Science, May 2011, thesis title "Development of GIS database for Eastern Tennessee Seismic Zone"
Yonas Birhanemeskel, graduated, MS in Earth Science, May 2011, thesis title " Development of GIS database for New Madrid Seismic Zone"
Tkalčić, H., N. Rawlinson, P. Arroucau, A. Kumar and B.L.N. Kennett, Multi-Step modeling of receiver-based seismic and ambient noise data from WOMBAT array: Crustal structure beneath southeast Australia, Geophys. J. Int., accepted, 2/3/12, 2012.
Bodin, T., M. Sambridge, H. Tkalčić, P. Arroucau, K. Gallagher and N. Rawlinson, Transdimensional inversion of receiver functions and surface wave dispersion, J. Geophys. Res.,117, B02301, doi:1029/2011JB008560, 2012.
Young, M., N. Rawlinson, P. Arroucau, A. M. Reading and H. Tkalčić, High frequency ambient noise tomography of southeast Australia: New constraints on Tasmania's tectonic past, Geophys. Res. Lett., 38, L13313, doi:10.1029/2011GL047971, 2011.
Vlahovic G. and R. Malhotra (2011). The ESRI Site License Program – Enhancing Geospatial education at North Carolina Central University, North Carolina Geographer, Vol. 18, pp 53-60.
Malhotra R. and G. Vlahovic (2011). GIS Educational Opportunities at Historically Black Colleges and Universities in the United States, Southeastern Geographer, 51(3) 2011: pp. 443–456.
Vlahovic, G. and R. Malhotra (2010). Geospatial Education at North Carolina Central University- an HBCU Perspective, Southeastern Geographer, 50(2) 2010: p. 258–271.
Malhotra, R., G. Vlahovic, G., Madden, M., Tilley, K., and M. Renslow (2010). The Role of Geospatial Associations in Promoting the Profession to Young People, Commission VI, WG VI/5, International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences,p.25-27
Arroucau, P., Rawlinson, N., and M. Sambridge (2010), New Insight into Cainozoic sedimentary basins and Palaeozoic suture zones in southeast Australia from ambient noise surface wave tomography, Geophys. Res. Lett., 37, L07303, doi :10.1029/2009GL041974.
Malhotra, R. and G. Vlahovic (2009). ASPRS Provisional Certificate Program – A Student Focused Opportunity, Photogrammetric Engineering and Remote Sensing, Volume 75, no. 8, p. 927-930.
Abstracts:
Agbaje , T. C., Arroucau, P., Vlahovic, G., Powell, C., Rawlinson, N. (2012), Teleseismic P-Wave Travel Time Residual Mapping in the Eastern Tennessee Seismic Zone, Seismological Research Letters, Volume 83, Number 2 March/April 2012, p. 453.
Stearns , C., Arroucau, P., Vlahovic, G., Mulrooney, T., Love, G. (2012), Digital Elevation Model Analysis in the Eastern Tennessee Seismic Zone, Seismological Research Letters, Volume 83, Number 2 March/April 2012, p.453.
Kuponiyi, A. P., Arroucau, P., Yongan, T., Vlahovic, G., Vlahovic, B. (2012), Ambient Noise Cross-Correlation in the Eastern Tennessee Seismic Zone (United States), Seismological Research Letters, Volume 83, Number 2 March/April 2012, p.453.
Knezevic Antonijevic , S., Arroucau, P., Vlahovic,G. (2012), Determination of Hypocentral and Focal Mechanism Solutions for 3 November 2010 Kraljevo Earthquake Sequence (Mw = 5.4), Seismological Research Letters, Volume 83, Number 2 March/April 2012, p.461.
Davies , J. A., Vlahovic, G., Arroucau, P. (2012), Bayesian Travel-Time Inversion for Earthquake Hypocentral Location, Seismological Research Letters, Volume 83, Number 2 March/April 2012, p.463.
Arroucau, P., Davies, J., Bodin, T., Sambridge, M., and G. Vlahovic (2012). A Bayesian transdimensional algorithm for earthquake location and 1D velocity model determination Geophysical Research Abstracts, Vol. 14, EGU General Assembly 2012.
Knezevic Antonijevic, S., Arroucau, P., and G. Vlahovic (2011). Analysis of November 3, 2010 Kraljevo Earthquake (Mw=5.4) and Its Aftershock Sequence, 2011 AGU Fall Meeting, San Francisco, CA, 5-9 December 2011, abstract ID# S53B-2275.
Arroucau, P., Vlahovic, G. and C. A. Powell (2011), 3D Euler deconvolution in the New Madrid seismic zone (eastern US), 2011 AGU Fall Meeting, San Francisco, CA, 5-9 December 2011, abstract ID# S11B-2226.
Powell, C., Langston, C., Chapman, M., Vlahovic, G., Thomas, W., Chiu, J.-M., and Ammon, C., (2011). Southeast U.S. Lithosphere Experiment – Continental Growth and Mantle Dynamics (SEUSLE), 2011 GSA Annual Meeting in Minneapolis (9–12 October 2011), Abstract ID# 197022.
Knezevic Antonijevic, S., Arroucau, P., and G. Vlahovic, (2011). Application of ArcGIS in the Study of Seismotectonic Setting of the November 2010 Kraljevo Earthquake (Mw=5.4), 2011 North Carolina ArcUsers Group Fall Conference, Carolina Beach, NC, September 14-16, 2011.
Arroucau, P., G. Vlahovic, C. A. Powell (2011). Potential Field Investigations in the Eastern Tennessee Seismic Zone, Geophysical Research Abstracts, Vol. 13, EGU2011-12505.
Arroucau, P., G. Vlahovic, C. A. Powell (2010). Joint Interpretation of Geophysical Data in the Eastern Tennessee Seismic Zone : An Integrative Approach, Eos Trans. AGU, 2010 Fall Meet. Suppl., Abstract NS41B-1519.
Birhanemeskel, Y. T., Vlahovic, G., Arroucau, P., Malhotra, R., and C. A. Powell (2010). Development of GIS Database for New Madrid Seismic Zone, Eos Trans. AGU, 2010 Fall Meet. Suppl., Abstract IN33A-1296.
Powell, C. A., Withers, M., Vlahovic, G. and P. Arroucau (2010). Earthquake Relocations in the Eastern Tennessee Seismic Zone: The Control of Ancient Basement Structure on Present-Day Seismicity in an Intraplate Setting, Eos Trans. AGU, 2010 Fall Meet. Suppl., Abstract S21B-2025.
Akinpelu, M. O., Vlahovic, G., Arroucau, P., Malhotra, R., and C. A. Powell (2010). Building a GIS database in the Eastern Tennessee Seismic Zone, Eos Trans. AGU, 2010 Fall Meet. Suppl., Abstract IN33A-1295.
Powell, C.A., Vlahovic, G., Arroucau, P., and M. Chapman (2010). The southern Appalachians: Complex Lithospheric Structure Associated With Multiple Wilson Cycles, 82nd Annual Meeting of the Eastern Section of the Seismological Society of America, October 18-19, 2010, Boston, MA.
Arroucau, P., Vlahovic, G., Malhotra, R., and C. Powell (2010). Crustal imaging in an intraplate continental region : seismological and potential field data analysis in the Eastern Tennessee Seismic Zone (SE United States), European Seismological Commission, 32nd General Assembly in Montpellier, France, September 6-10, 2010
Vlahovic, G., Malhotra, R. and V. Pisupati (2010). GIS Educational Opportunities at Historically Black Colleges and Universities in the Southeast, UCGIS 2010 Summer Assembly, Hilton Head, SC., June 15-16, 2010.
Arroucau, P., Vlahovic, G., Malhotra, R. and C. Powell (2010). Potential Field Analysis in the Eastern Tennessee Seismic Zone, 2010 NSF Joint Annual Meeting, June 6-9, Washington, DC.
Arroucau, P., Vlahovic, G., Malhotra, R. and C. Powell (2010). Joint Inversion of Gravity and Magnetic Data in the Eastern Tennessee Seismic Zone, Geophysical Research Abstracts, Vol. 12, EGU2010-12600, 2010, EGU General Assembly 2010.
Arroucau, P., Vlahovic, G., and C. Powell (2010). Seismicity and Crustal Structure of the Eastern Tennessee Seismic Zone from Gravity and Magnetic Data Modeling, Seismological Research Letters Volume 81, No. 2, p. 360.
Arroucau, P., Vlahovic, G., Malhotra, R., Powell, C., Birhanemeskel, Y. and M. Akinpelu (2010). Crustal Imaging in the New Madrid Seismic Zone and the Eastern Tennessee Seismic Zone from gravity and magnetic field modeling, NCCU College of Science and Technology Second Annual Research Symposium, March 19-20, 2010.
Vlahovic, G. and R. Malhotra (2009), Student Focused Geospatial Curriculum Initiatives: Internships and Certificate Programs at NCCU, Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract ED53B-0545
Vlahovic, G. and R. Malhotra (2009). Integrative Geophysical Investigation of the New Madrid Seismic Zone: Impact of CREST funding on development of geophysics program at NCCU, HBCU-UP National Research Conference in Washington, D.C., October 29- 31.
Rakesh, M., Barnett, A. and G. Vlahovic (2009). Geospatial Initiatives: Internships and Certificate Programs, 2009 National HBCU Week, August 30 - September 2, Washington, D.C.
Vlahovic, G. (2009). Encouraging Critical Thinking in Introductory Geoscience Courses, Critical Thinking Through Technology Workshop, North Carolina Central University, May 21-22, 2009.
Vlahovic, G. and R. Malhotra (2009). Creating Diverse STEM Workforce: Geospatial Science Program at North Carolina Central University, NSF 2009 Joint Annual Meeting, Washington, DC, June 8-11, 2009.
Vlahovic, G. and R. Malhotra (2009). Pilot Center for Academic Excellence in Intelligence Studies (PCAEIS) 2009 Research Week, invited, Promoting Geospatial Initiatives at North Carolina Central University, April 1, 2009.
Vlahovic, G. and R. Malhotra (2008). Pathway to Success – Research and Internship Opportunities for Students, Eos Trans. AGU, 2008 Fall Meet. Suppl., Abstract ED51A-0564, December 2008.
Vlahovic, G. and R. Malhotra (2008). Geospatial Research and Internship Partnerships, 2008 NGA Academic Research Program Symposium (NARP), September 9-12, 2008, National Academy of Sciences, Keck Center, Washington, DC
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