Site characterization with 3D elastic full-waveform tomography

Geophysics - Tập 83 Số 5 - Trang R389-R400 - 2018
Trung Dung Nguyen1, Khiem T. Tran2
1Clarkson University, Department of Civil and Environmental Engineering, P.O. Box 5710, Potsdam, New York 13699-5710, USA. E-mail: .
2University of Florida, Department of Civil and Coastal Engineering, P.O. Box 5710, Potsdam, New York 13699-5710, USA. E-mail: .

Tóm tắt

We have developed a 3D elastic full-waveform inversion (FWI) method for geotechnical site characterization. The method is based on a solution of 3D elastic-wave equations for forward modeling to simulate wave propagation and a local optimization approach based on the adjoint-state method to update the model parameters. The staggered-grid finite-difference technique is used to solve the wave equations together with implementation of the perfectly matched layer condition for boundary truncation. Seismic wavefields are acquired from geophysical testing using sensors and sources located in uniform 2D grids on the ground surface, and they are then inverted for the extraction of 3D subsurface wave velocity structures. The capability of the presented FWI method is tested on synthetic and field data sets. The inversion results from synthetic data indicate the ability of characterizing laterally variable low- and high-velocity layers. Field experimental data were collected using 96 receivers and a propelled energy generator to induce seismic wave energy. The field data result indicates that the waveform analysis was able to delineate variable subsurface soil layers. The seismic inversion results are generally consistent with invasive standard penetration test [Formula: see text]-values, including identification of a low-velocity zone.

Từ khóa


Tài liệu tham khảo

10.1785/0120070079

10.1190/1.2957948

10.1190/1.3581357

10.1111/j.1365-246X.2006.03156.x

10.3997/1873-0604.2012067

10.1190/1.3379323

10.1111/1365-2478.12065

10.1093/gji/ggu427

Cheong S., 2006, Journal of Seismic Exploration, 14

10.1088/0266-5611/24/3/034015

10.1016/j.cma.2015.07.008

10.1016/j.soildyn.2016.04.010

10.1111/j.1365-246X.2009.04368.x

10.1111/j.1365-246X.2006.03135.x

10.1190/geo2013-0462.1

10.1190/geo2013-0332.1

10.1016/j.soildyn.2012.12.012

10.1190/1.2757586

10.3997/1873-0604.2016027

10.1111/1365-2478.12136

10.1190/1.1442384

10.1061/(ASCE)BE.1943-5592.0000866

10.1007/978-0-387-40065-5_17

10.1190/tle32091040.1

10.1190/1.1444590

10.1190/1.3211198

10.1111/j.1365-246X.2006.02978.x

10.1046/j.1365-246X.1998.00498.x

10.1111/j.1365-246X.2011.05209.x

10.1093/gji/ggt177

10.1111/j.1365-246X.2004.02442.x

10.1190/1.1444107

10.1190/1.3569798

10.1093/comjnl/3.3.175

10.3997/2214-4609.20148327

10.1111/j.1365-2478.2008.00692.x

10.1111/j.1365-246X.2006.03162.x

10.1046/j.1365-246X.2002.01645.x

10.3997/1365-2397.2010012

10.3141/2580-09

10.1190/1.1441754

10.2113/JEEG17.4.197

10.1061/(ASCE)GT.1943-5606.0000685

10.1016/j.soildyn.2017.04.018

10.1016/j.soildyn.2012.07.004

10.1190/geo2013-0063.1

10.1190/geo2010-0399.1

10.1190/tle32091116.1

10.1190/1.1442147

10.1190/1.3238367

10.1190/geo2012-0338.1

Thông tin
Thông tin xuất bản

Geophysics

Tập 83 Số 5

R389-R400

Thông tin tác giả