Continuation of Joint and Full Waveform Inversion To Improve Evaluation of Sinkholes and Karst Features
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2023-11-10
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Edition:Final Report: 12/12/2022 – 11/10/2023
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Abstract:Geophysical methods can provide fast and reliable information regarding sinkholes and karst features over a broad area of coverage. Often, these geophysical methods involve the solution to an inversion problem to deduce subsurface details based on surface measurements. Solution of the inversion problem is a non-trivial issue that has warranted significant study. A number of advanced methods have been examined in the recent past that focus on jointly inverting multiple datasets or using full waveform approaches that numerically model the subsurface. The purpose of this report is to summarize research efforts regarding the capabilities of advanced geophysical techniques when applied specifically to evaluate the severity and extent of sinkhole/karst hazards and quality control of mitigation efforts. The objective of this research project was to provide the Pennsylvania Department of Transportation (PennDOT) recommendations regarding the use of such advanced geophysical techniques in their efforts to manage sinkhole risk across the Commonwealth of Pennsylvania. The focus of this project was full waveform inversion (FWI) and its implementation at a site with active sinkholes.
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