| Title | Tunnel detection using vibrating and impulsive seismic sources with a landstreamer |
| |
| Author | Pugin, A J -M; Brewer, K; Cartwright, T; Sargent, S L |
| Source | SEG18, expanded abstracts and technical program; Society of Exploration Geophysicists, Technical Program, Expanded Abstracts 2018, 2018 p. 2667-2671, https://doi.org/10.1190/segam2018-2995013.1 |
| Image |  |
| Year | 2018 |
| Alt Series | Natural Resources Canada, Contribution Series 20180021 |
| Publisher | Society of Exploration Geophysicists |
| Meeting | SEG 2018 Annual Meeting; Ahaheim, California; US; October 14-18, 2018 |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Subjects | geophysics; surficial geology/geomorphology; engineering geology; geophysical surveys; seismic surveys, ground; seismic reflection surveys; seismic waves; marine sediments; marine clays; waste disposal;
mines; coal mining; mines; in-field instrumentation; methodology; alluvial sediments |
| Illustrations | photographs; seismic profiles |
| Program | Groundwater Geoscience,
Aquifer Assessment & support to mapping |
| Released | 2018 01 01 |
| Abstract | (Summary)
We present the results of two surveys showing that shear wave seismic reflection can image a sewage tunnel buried at 17 m in marine clay, and coalmine tunnels close to the bedrock
surface beneath about 30 m of recent fluvial sediments. The SH shear wave seismic reflection method provides outstanding diffraction features only visible with transverse horizontal sources and recording capacities (H2,H2). These data were acquired
using an impulsive or a broader band vibrating source coupled with a landstreamer. The use of SV vertical shear and PP compressive waves extracted from data acquired with vertical vibrating source and receiver mode (V,V) did not give satisfying
results for locating tunnels in these environments. |
| Summary | (Plain Language Summary, not published)
We present the results of two surveys showing that shear wave seismic reflection can image a sewage tunnel buried at 17 m in marine clay, and coalmine
tunnels close to the bedrock surface beneath about 30 m of recent fluvial sediments. The SH shear wave seismic reflection method provides outstanding diffraction features only visible with transverse horizontal sources and recording capacities
(H2,H2). These data were acquired using an impulsive or a broader band vibrating source coupled with a landstreamer. The use of SV vertical shear and PP compressive waves extracted from data acquired with vertical vibrating source and receiver mode
(V,V) did not give satisfying results for locating tunnels in these environments. |
| GEOSCAN ID | 308159 |
|
|