GNGTS 2023 - Atti del 41° Convegno Nazionale

Session 3.2 ___ GNGTS 2023 FIG. 3 Channel evidence on four GPR profiles (A-B-C-D); the sedimentary deposit extension is marked in pink on the satellite photo on the top. Vertical exaggeration of GPR profile 2x. Conclusion In this work, we present the ongoing research focused on the characterization of the Amorphous Lake geomorphological setting by means of GPR. We tried to image and associate a physical meaning to several electromagnetic ice/sedimentary facies. In particular, we found a layered facies supposed to be correlated with sedimentary deposition, as in a fluvial delta, both for its evident internal layering and for the evidence of a localised incision flowing down along the morainic ridge. New GPR and FDEM data collected in the ongoing XXXVIII Italian Antarctic Expedition will possibly better clarify a complex and intriguing geomorphological, hydrological and glaciological actual and paleo situation. Acknowledgements This work was supported by grants from the National Antarctic Research Program (PNRA18_00288-D; PNRA18_00186-E). We gratefully acknowledge Schlumberger through the University of Trieste Petrel® interpretation package academic grant. References Forte E., Azzaro M., Guglielmin M., Evidence of an unprecedented water erosion and supraglacial-fluvial sedimentation on an Antarctic glacier during the late Holocene . Submitted to Science of the Total Environment Forte, E., Dalle Fratte, M., Azzaro, M., Guglielmin, M., 2016. Pressurized brines in continental Antarctica as a possible analogue of Mars . Scientific Reports, 6, 33158, 10.1038/srep33158