1887

Abstract

Summary

This study investigates the effects of different interrogator units (IU) on surface seismic Distributed Acoustic Sensing (DAS) performance, through a comparative analysis. Seismic data was acquired using DAS IU X and Y that connected to a buried single mode fiber optic cable, alongside geophones as reference. The data analysis focuses on signal quality, noise characteristics, and phase velocity dispersion. Initially, the raw DAS datasets are dominated by common mode noise (CMN), which appears to be more severe and irregular patterns for DAS IU Y than DAS IU X, which appears to be more consistent at high frequency. After applying noise attenuation filters, both DAS datasets become more comparable to geophone data as the ground roll and direct arrival are more visible. Our velocity dispersion results shows that DAS IU X captures ground rolls event at a broader frequency spectrum (5 Hz – 45 Hz) compared to DAS IU Y, which is more focus on lower frequencies (7 Hz – 25 Hz). The dispersion curve for geophones spans 10 Hz to 35 Hz and is less smooth than DAS. Phase velocity analysis shows that DAS IU X is more suitable for high resolution surface wave analysis in shallow seismic imaging as it offers clearer and more continuous fundamental mode dispersion trend than DAS IU Y. These findings highlight the importance of interrogator selection in optimizing DAS-based seismic surveys.

© EAGE Publications BV
Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.202574016
2025-07-03
2026-02-19

  • From This Site

    /content/papers/10.3997/2214-4609.202574016
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. Bakulin, A., Silvestrov, I., & Pevzner, R. (2018). Surface seismic with DAS: Looking deep and shallow at the same time. SEG Technical Program Expanded Abstracts 2018, 16–20. https://doi.org/10.1190/segam2018-2995870.1
     [Google Scholar]
  2. Bakulin, A., Silvestrov, I., & Pevzner, R. (2020). Surface seismics with DAS: An emerging alternative to modern point-sensor acquisition. The Leading Edge, 39(11), 808–818. https://doi.org/10.1190/tle39110808.1
     [Google Scholar]
  3. Daley, T. M., Miller, D. E., Dodds, K., Cook, P., & Freifeld, B. M. (2016). Field testing of modular borehole monitoring with simultaneous distributed acoustic sensing and geophone vertical seismic profiles at Citronelle, Alabama. Geophysical Prospecting, 64(5), 1318–1334. https://doi.org/10.1111/1365-2478.12324
     [Google Scholar]
  4. Jiang, W., Lin, J., Liu, B., Zhang, R., Zhang, B., Yang, Z., & Gu, Y. (2023). Distributed acoustic sensing for shallow structure imaging using mechanical noise: A case study in Guangzhou, China. Journal of Applied Geophysics, 215, 1–12. https://doi.org/10.1016/j.jappgeo.2023.105139
     [Google Scholar]
  5. Mad Zahir, M. H., Abdul Aziz, K. M., Ghazali, A. R., & Abdul Latiff, A. H. (2023). Effectiveness of Fiber Optic Distributed Acoustic Sensing (DAS) in Vertical Seismic Profiling (VSP) Field Survey. Applied Sciences, 13(8), 1–14. https://doi.org/10.3390/app13085002
     [Google Scholar]
  6. Malinowski, M., Putkinen, N., Brodic, B., Laakso, V., Koskela, E., Heinonen, S., Engström, J., & Paananen, M. (2023). P- and S-wave Seismic Imaging of a Complex Aquifer System in Kurikka, Western Finland. First Break, 41(8), 67–72. https://doi.org/10.3997/1365-2397.fb2023063
     [Google Scholar]
  7. Mateeva, A., Lopez, J., Potters, H., Mestayer, J., Cox, B., Kiyashchenko, D., Wills, P., Grandi, S., Hornman, K., Kuvshinov, B., Berlang, W., Yang, Z., & Detomo, R. (2014). Distributed acoustic sensing for reservoir monitoring with vertical seismic profiling. Geophysical Prospecting, 62(4), 679–692. https://doi.org/10.1111/1365-2478.12116
     [Google Scholar]
  8. Wei, J., Gong, W., Xing, J., & Xu, H. (2024). Distributed acoustic sensing technology in marine geosciences. Intelligent Marine Technology and Systems, 2(1), 26. https://doi.org/10.1007/s44295-024-00039-y
     [Google Scholar]
  9. Willis, M. E. (2022). Distributed Acoustic Sensing for Seismic Measurements – What Geophysicists and Engineers Need to Know. Society of Exploration Geophysicists. https://doi.org/10.1190/1.9781560803850
     [Google Scholar]
/content/papers/10.3997/2214-4609.202574016
Loading
Comparative Analysis of Interrogator Unit Performance in Surface Seismic DAS: Case Study in a Campus Area
Conference Proceedings 2025, 1 (2025); https://doi.org/10.3997/2214-4609.202574016
/content/papers/10.3997/2214-4609.202574016
/content/papers/10.3997/2214-4609.202574016
Loading

Data & Media loading...

Most Cited This Month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error