Ilaria Santin
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Last Name
Santin
First Name
Ilaria
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09599 - Farinotti, Daniel / Farinotti, Daniel
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Publications 1 - 2 of 2
- Evidence of brines interconnections and different flow patterns within the boulder clay glacier and its moraine (Victoria Land, East Antarctica)Item type: Journal Article
Science of The Total EnvironmentForte, Emanuele; Santin, Ilaria; Azzaro, Maurizio; et al. (2024)Multi-technique integrated surveys were carried out to investigate brine characteristics, connectivity and flow patterns in the Boulder Clay Glacier area, Victoria Land, East Antarctica. Specifically, electromagnetic geophysical surveys focused mainly on Ground Penetrating Radar (GPR) and integrated by Frequency Domain induction, not only demonstrated the presence of brines in the subsurface, but also allowed to image several structures and glaciological elements. Chemical analyses suggested the origin and differentiation of the brines, providing evidence for interconnected pathways. To the best of our knowledge, this is the first time that brines interconnection and their chemical common footprint is demonstrated below a glacier and its moraine at shallow depth, combining boreholes, geophysical, geomorphological, and chemical data. This demonstrates that liquid flows can occur at very shallow depths, even in continental Antarctica, and that pressurised brines can flow beneath and through glaciers and moraines. - A warming pulse in the Antarctic continent changed the landscape during the Middle AgesItem type: Journal Article
Communications Earth & EnvironmentForte, Emanuele; Azzaro, Maurizio; Cannone, Nicoletta; et al. (2025)The Antarctic landscape is one of the most stable environments on the Earth, at least since approximately 14 million years ago when most glaciers in continental Antarctica changed from temperate to cold-based, and previous extensive fluvial activity disappeared. Here, we detected a large landscape change on a coastal glacier in continental Antarctica (Boulder Clay Glacier) that occurred in the Medieval Warm Period. Such change consists in a glacial unconformity marked by a continuous sediment layer and an erosion channel on the past glacier surface. This channel, more than 4 kilometers long, represents a local deepening of a glacial unconformity that cuts the underlying glacial strata and was clearly imaged and mapped by Ground Penetrating Radar data. Four boreholes were allowed to calibrate the sediment layer so identified because it was observed in all boreholes at depths between 1.85 and 3.07 m. Moreover, the occurrence at a depth of 11.11 meters of mosses suitable for the dating through radiocarbon dating provided the age of 1050 calibrated years before the present, implying that the erosion event occurred during the Medieval Warm Period between 900 and 989 before the present.
Publications 1 - 2 of 2