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Comment on ‘Geophysical approach to the study of a periglacial blockfield in a mountain area (Ztracené kameny, Eastern Sudetes, Czech Republic)’ by Stan et al. (2017)
- Uxa, Tomáš, Křížek, Marek, Krause, David, Hartvich, Filip, Tábořík, Petr, Kasprzak, Marek
- Geomorphology 2019 v.328 pp. 231-237
- altitude, climate, electrical resistance, geophysics, latitude, permafrost, tomography, Czech Republic
- Stan et al. (2017) investigated the internal structure of two periglacial blockfields on the Ztracené kameny site, Eastern High Sudetes, Czech Republic, using electrical resistivity tomography and seismic refraction tomography and interpreted two high-resistivity and high-velocity zones as remnants of the Pleistocene permafrost. However, we believe that in reality no permafrost occurs on the site, and we provide alternate, non-permafrost interpretations of the geophysical measurements by Stan et al. (2017) that are well consistent with other evidences such as climate and topographic attributes of the blockfields, permafrost-disqualifying ground thermal regimes, and common characteristics of mid-latitude, low-altitude permafrost locations from elsewhere. We also rectify some misconceptions about the study site that are stated by Stan et al. (2017).