The inversion of surface-wave dispersion curves is a reliable method to derive near-surface shear-wave velocity profiles. In this contribution, we invert 2D seismic-reflection data acquired as part of a paleoenvironmental study of the Llancanelo Lake basin (southern Mendoza Province, Argentina), that cannot be used to image the first 50 m with reflection processing due to its characteristics. Though exhibiting severe spatial aliasing, the Rayleigh dispersion curves were successfully sampled and then inverted to obtain 2D shallow shear-wave velocity profiles. The results are compatible with the already known stratigraphy of the near-surface in the region, and provide more details on the uppermost layers, particularly some differences in the seismic response of different sedimentary deposits.


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  1. de la Vega, M., Lopez, E., Osella, A., Rovere, E.I., Violante, R.A.
    [2012] Quaternary volcanic-sedimentary sequences and evolution of the Llancanelo Lake region (Southern Mendoza, Western Argentina) evidenced from geoelectric methods. J. South Am. Earth Sci.40, 116–128. https://doi.org/10.1016/j.jsames.2012.08.002
    [Google Scholar]
  2. Osella, A., Onnis, L., de la Vega, M., Tassone, A., Violante, R.A., Lippai, H., López, E., Rovere, E.I.
    [2015] Seismic reflection survey at Llancanelo region (Mendoza, Argentina) and preliminary interpretation of Neogene stratigraphic features. J. South Am. Earth Sci.60, 71–81. https://doi.org/10.1016/j.jsames.2015.03.005
    [Google Scholar]
  3. Onnis, L., Violante, R.A., Osella, A., Vega, M. De Tassone, A., López, E.
    [2018] Neogene-Quaternary seismic stratigraphy of the Llancanelo Lake Basin, Mendoza, Argentina. Andean Geol.45, 35–46. https://doi.org/10.5027/andgeoV45n1-3026
    [Google Scholar]
  4. Sambridge, M.
    [1999] Geophysical inversion with a neighbourhood algorithm - I. Searching a parameter space. Geophys. J. Int.138, 479–494. https://doi.org/10.1046/j.1365-246X.1999.00876.x
    [Google Scholar]
  5. Socco, L.V., Boiero, D., Foti, S., Wisén, R.
    [2009] Laterally constrained inversion of ground roll from seismic reflection records. GEOPHYSICS74, G35–G45. https://doi.org/10.1190/1.3223636
    [Google Scholar]
  6. Wathelet, M., Jongmans, D., Ohrnberger, M.
    [2004] Surface-wave inversion using a direct search algorithm and its application to ambient vibration measurements. Near Surf. Geophys.2, 211–221. https://doi.org/10.3997/1873-0604.2004018
    [Google Scholar]

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