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The Cryosphere
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Articles | Volume 18, issue 7
Articles | Volume 18, issue 7
https://doi.org/10.5194/tc-18-3231-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/tc-18-3231-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 7
Brief communication
 | 
16 Jul 2024
Brief communication |  | 16 Jul 2024

Brief communication: On the potential of seismic polarity reversal to identify a thin low-velocity layer above a high-velocity layer in ice-rich rock glaciers

Jacopo Boaga, Mirko Pavoni, Alexander Bast, and Samuel Weber

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Revised manuscript not accepted
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Cited articles

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Anandakrishnan, S.: Dilatant till layer near the onset of streaming flow of Ice Stream C, West Antarctica, determined by AVO (amplitude vs offset) analysis, Ann. Glaciol., 36, 283–286, 2003. 
Barone, I., Boaga, J., Carrera, A., Orozco, A., and Cassiani, G.: Tackling Lateral Variability Using Surface Waves: A Tomography-Like Approach, Surv. Geophys., 42, 317–338, 2021. 
Bast, A., Kenner, R., and Phillips, M.: Short-term cooling, drying and deceleration of an ice-rich rock glacier, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2024-269, 2024. 
Blanchy, G., Saneiyan, S., Boyd, J., McLachlan, P., and Binley, A. ResIPy, an intuitive open source software for complex geoelectrical inversion/modeling, Comput. Geosci., 137, 104423, https://doi.org/10.1016/j.cageo.2020.104423, 2020. 
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Short summary
Reversal polarity is observed in rock glacier seismic refraction tomography. We collected several datasets observing this phenomenon in Switzerland and Italy. This phase change may be linked to interferences due to the presence of a thin low-velocity layer. Our results are confirmed by the modelling and analysis of synthetic seismograms to demonstrate that the presence of a low-velocity layer produces a polarity reversal on the seismic gather.
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Emerging geophysical methods for permafrost investigations:...