Detecting an underground tunnel by applying joint traveltime and waveform inversion

Alsharahi, 2019, Detection of cavities and fragile areas by numerical methods and GPR application, J. Appl. Geophys., 164, 225, 10.1016/j.jappgeo.2019.03.007 Belfer, 1998, Detection of shallow objects using refracted and diffracted seismic waves, J. Appl. Geophys., 38, 155, 10.1016/S0926-9851(97)00025-6 Butler, 1984, Microgravimetric and gravity gradient techniques for detection of subsurface cavities, Geophys., 49, 1084, 10.1190/1.1441723 Chen, 2017, Detecting a known near-surface target through application of frequency-dependent traveltime tomography and full-waveform inversion to P-and SH-wave seismic refraction data, Geophys., 82, R1, 10.1190/geo2016-0085.1 Fan, 2015, Imaging shallow complex structures in north sea with joint traveltime and waveform inversion, 40 Forbriger, 2014, Line-source simulation for shallow-seismic data. part 1: theoretical background, Geophys. J. Int., 198, 1387, 10.1093/gji/ggu199 Gardner, 1974, Formation velocity and density - the diagnostic basics for stratigraphic traps, Geophys., 39, 770, 10.1190/1.1440465 Hauquin, 2019, The detection of old masonry tunnels as low electrical resistivity anomalies-application to one covered stream tunnel of the Cevennes mountain region (France), J. Appl. Geophys., 168, 12, 10.1016/j.jappgeo.2019.05.010 Jiang, 2015, Imaging complex near-surface land area with joint traveltime and waveform inversion, 1441 Jiang, 2017, First-arrival traveltime tomography with modified total-variation regularization, Geophys. Prospect., 65, 1138, 10.1111/1365-2478.12477 Kaufmann, 2011, Cave detection using multiple geophysical methods: unicorn cave, harz mountains, Germany, Geophys., 76, B71, 10.1190/1.3560245 Kilic, 2018, Neural network based inspection of voids and karst conduits in hydro–electric power station tunnels using GPR, J. Appl. Geophys., 151, 194, 10.1016/j.jappgeo.2018.02.026 Lai, 2018, A blind test of nondestructive underground void detection by ground penetrating radar (GPR), J. Appl. Geophys., 149, 10, 10.1016/j.jappgeo.2017.12.010 Leung, 2006, An adjoint state method for three-dimensional transmission traveltime tomography using first-arrivals, Commun. Math. Sci., 4, 249, 10.4310/CMS.2006.v4.n1.a10 Luo, T.X.H., Lai, W.W..L., Chang, R.K.W., Goodman, D., 2019. GPR imaging criteria. J. Appl. Geophys. 165, 37–48. https://doi.org/10.1016/j.jappgeo.2019.04.008. Mochales, 2008, Detection of underground cavities by combining gravity, magnetic and ground penetrating radar surveys: a case study from the Zaragoza area, NE Spain, Environ. Geol., 53, 1067, 10.1007/s00254-007-0733-7 Park, 2018, Refraction traveltime tomography based on damped wave equation for irregular topographic model, J. Appl. Geophys., 150, 160, 10.1016/j.jappgeo.2018.01.025 Pratt, 1999, Seismic waveform inversion in the frequency domain. part 1: theory and verification in a physical scale model, Geophys., 64, 888, 10.1190/1.1444597 Pratt, 1998, Gauss-Newton and full Newton methods in frequency-space seismic waveform inversion, Geophys. J. Int., 133, 341, 10.1046/j.1365-246X.1998.00498.x Sloan, 2015, Detecting clandestine tunnels using near-surface seismic techniques, Geophys., 80, EN127, 10.1190/geo2014-0529.1 Slob, 2010, Surface and borehole ground-penetrating-radar developments, Geophys., 75, 75A103, 10.1190/1.3480619 Tarantola, 1984, Inversion of seismic-reflection data in the acoustic approximation, Geophys., 49, 1259, 10.1190/1.1441754 Tran, 2013, Sinkhole detection using 2D full seismic waveform tomography, Geophys., 78, R175, 10.1190/geo2013-0063.1 Van Schoor, 2002, Detection of sinkholes using 2D electrical resistivity imaging, J. Appl. Geophys., 50, 393, 10.1016/S0926-9851(02)00166-0 Virieux, 2009, An overview of full-waveform inversion in exploration geophysics, Geophys., 74, WCC1, 10.1190/1.3238367 Wang, 2019, 3D variable-grid full-waveform inversion on GPU, Pet. Sci., 16, 1001, 10.1007/s12182-019-00368-2 Wightman, 2003 Xia, 2007, Feasibility of detecting near-surface feature with Rayleigh-wave diffraction, J. Appl. Geophys., 62, 244, 10.1016/j.jappgeo.2006.12.002 Yilmaz, 2001 Zelt, 2016, Frequency-dependent traveltime tomography for near-surface seismic refraction data, Geophys. J. Int., 207, 72, 10.1093/gji/ggw269 Zelt, 1992, Seismic traveltime inversion for 2-D crustal velocity structure, Geophys. J. Int., 108, 16, 10.1111/j.1365-246X.1992.tb00836.x Zhang, 2014, Joint seismic traveltime and waveform inversion for near surface imaging, 934 Zhang, 2010, Unsplit complex frequency-shifted PML implementation using auxiliary differential equations for seismic wave modeling, Geophys., 75, T141, 10.1190/1.3463431 Zhang, 1998, Nonlinear refraction traveltime tomography, Geophys., 63, 1726, 10.1190/1.1444468 Zhang, 2011, Full-waveform tomography with consideration for large topography variations, 2539 Zhu, 1992, Tomostatics: turning-ray tomography+static corrections, Lead. Edge, 11, 15, 10.1190/1.1436864