1887

Abstract

Summary

Shallow permafrost is associated with significant potential risks for offshore construction and drilling as well as ecological risks that may occur when the permafrost is disturbed due to the human activities. Identification and mapping of the shallow permafrost areas is one of the major tasks of the site survey investigations in the Russian Arctic. Due to the lack of engineering drilling data on the Arctic shelf, remote geological and geophysical studies, such as multichannel high, very-high and ultra-high resolution (HR, VHR and UHR) seismic surveys, are increasingly being used to map and characterize the subaquatic permafrost. In the paper, we present an approach to 3D VHR reflection seismic data interpretation that allowed us to the built a volumetric model of the shallow permafrost and assess its acoustic properties in the shelf of the Kara sea. To our knowledge, this is the first ever demonstrated detailed 3D model of the shallow permafrost in the Russian Artic.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.202152191
2021-04-26
2023-01-28
Loading full text...

Full text loading...

References

  1. Dou, S., Nakagawa, S., Dreger, D., and Ajo-Franklin, J.
    [2016]. A rock-physics investigation of unconsolidated saline permafrost: P-wave properties from laboratory ultrasonic measurements. GEOPHYSICS, 81(1), WA233–WA245. https://doi.org/10.1190/geo2015-0176.1
    [Google Scholar]
  2. Gavrilov, A., Pavlov, V., Fridenberg, A., Boldyrev, M., Khilimonyuk, V., Pizhankova, E., … Ospennikov, E.
    [2020]. The current state and 125kyr history of permafrost on the Kara Sea |shelf: modeling constraints. The Cryosphere, 14(6), 1857–1873. https://doi.org/10.5194/tc-14-1857-2020
    [Google Scholar]
  3. King, M. S., Zimmerman, R. W., and Corwin, R. F.
    [1988]. Seismic and electrical properties of unconsolidated permafrost. Geophysical Prospecting, 36(4), 349–364. https://doi.org/10.1111/j.1365-2478.1988.tb02168.x
    [Google Scholar]
  4. Loktev, A. S., Tokarev, M. Y., and Chuvilin, E. M.
    [2017]. Problems and Technologies of Offshore Permafrost Investigation. Procedia Engineering, 189, 459–465.
    [Google Scholar]
  5. Vardy, M. E.
    [2015]. Deriving shallow-water sediment properties using post-stack acoustic impedance inversion. Near Surface Geophysics, 13(2), 143–154. https://doi.org/10.3997/1873-0604.2014045
    [Google Scholar]
  6. Vardy, M. E., Vanneste, M., Henstock, T. J., Clare, M. A., Forsberg, C. F., and Provenzano, G.
    [2017]. State-of-the-art remote characterization of shallow marine sediments: the road to a fully integrated solution. Near Surface Geophysics, 15(4), 387–402. https://doi.org/10.3997/1873-0604.2017024
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.202152191
Loading
/content/papers/10.3997/2214-4609.202152191
Loading

Data & Media loading...

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