Location
Grand Rapids, Michigan
Start Date
15-5-2024 11:00 AM
End Date
15-5-2024 11:30 AM
Description
Seismic Interferometry Technique for Characterization of Loose CCR Layers Authors Dr. Seda Gokyer Erbis - United States - Geocomp Inc Dr. Allen Marr - United States - Geocomp Inc Dr. Thomas Bardainne - France - Sercel Mr. Renaud Tarnus - France - Sercel Mrs. Ellen Money - United States - Tennessee Valley Authority Mr. Nicholas McClung - United States - Tennessee Valley Authority Mr. Matt Bishop - United States - Tennessee Valley Authority Mr. Jonathan Petsch - United States - Geocomp Inc Abstract The upcoming expansion of EPA’s coal combustion residuals (CCR) rule will have implications on CCR storage and management. Careful consideration of CCR management with best practices that includes technologies feasible to determine CCR volume is vital. Surface wave tomography, when higher resolution data collection and enhanced processing methods are employed, is a feasible method to provide complementary data to delineate loose CCR layers. This study uses a patented imaging and monitoring system based on the passive seismic interferometry technique augmented by active seismic sources at known locations. A dense nodal array of Micro-Electro-Mechanical Systems (MEMs) accelerometers are deployed at a site where known saturated loose CCR materials exist. This paper presents Vs data computed from surface wave measurements where various Vp/Vs ratios were considered, showing the significant effect of the Vp/Vs ratio on the inferred Vs data. Two-dimensional Vs data, when compared to known geometry of CCR, showed good agreement. This paper also presents the comparison of computed Vs data to measured Vs by cross-hole seismic and seismic cone penetration tests to collaborate the measurements made with passive seismic methods.
Document Type
Presentation
Seismic Interferometry Technique for Characterization of Loose CCR Layers
Grand Rapids, Michigan
Seismic Interferometry Technique for Characterization of Loose CCR Layers Authors Dr. Seda Gokyer Erbis - United States - Geocomp Inc Dr. Allen Marr - United States - Geocomp Inc Dr. Thomas Bardainne - France - Sercel Mr. Renaud Tarnus - France - Sercel Mrs. Ellen Money - United States - Tennessee Valley Authority Mr. Nicholas McClung - United States - Tennessee Valley Authority Mr. Matt Bishop - United States - Tennessee Valley Authority Mr. Jonathan Petsch - United States - Geocomp Inc Abstract The upcoming expansion of EPA’s coal combustion residuals (CCR) rule will have implications on CCR storage and management. Careful consideration of CCR management with best practices that includes technologies feasible to determine CCR volume is vital. Surface wave tomography, when higher resolution data collection and enhanced processing methods are employed, is a feasible method to provide complementary data to delineate loose CCR layers. This study uses a patented imaging and monitoring system based on the passive seismic interferometry technique augmented by active seismic sources at known locations. A dense nodal array of Micro-Electro-Mechanical Systems (MEMs) accelerometers are deployed at a site where known saturated loose CCR materials exist. This paper presents Vs data computed from surface wave measurements where various Vp/Vs ratios were considered, showing the significant effect of the Vp/Vs ratio on the inferred Vs data. Two-dimensional Vs data, when compared to known geometry of CCR, showed good agreement. This paper also presents the comparison of computed Vs data to measured Vs by cross-hole seismic and seismic cone penetration tests to collaborate the measurements made with passive seismic methods.
