Permafrost station at Sommeiller Pass (NW Italy): from the monitoring to reference site and methods

The Sommeiller Pass permafrost monitoring station, at about 3000 m of altitude, is the key site of the regional network installed in 2009 during the European Project PermaNET in the Piedmont Alps (NW Italy). The station consists of 3 vertical boreholes 5, 10 and 100 m deep with different characteris...

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Bibliographic Details
Main Authors: Luca Paro, Mauro Guglielmin, Andrea Merlone, Graziano Coppa, Chiara Musacchio, Francesca Sanna
Other Authors: Philip Deline, Xavier Bodin, Ludovic Ravanel, Chloé Barboux, Reynald Delaloye, Christophe Lambiel, Florence Magnin, Paolo Pogliotti, Philippe Schoeneich, Paro, Luca, Guglielmin, Mauro, Merlone, Andrea, Coppa, Graziano, Musacchio, Chiara, Sanna, Francesca
Format: Conference Object
Language:English
Published: Laboratoire EDYTEM 2019
Subjects:
permafrost
Online Access:http://hdl.handle.net/11696/71570
https://hal.archives-ouvertes.fr/hal-01816115v2/document
Description
Summary:The Sommeiller Pass permafrost monitoring station, at about 3000 m of altitude, is the key site of the regional network installed in 2009 during the European Project PermaNET in the Piedmont Alps (NW Italy). The station consists of 3 vertical boreholes 5, 10 and 100 m deep with different characteristics, equipped with thermometric chains for a total of 34 Pt100 sensors. Due to infiltration and freezing of water inside the instrumentation and boreholes, the station became operational in 2011 after recovering. The collected data shows a constant active layer 8-9 m of thickness, while the permafrost temperature curves show a degradation of the base at approximately 65 m of depth since 2014. In order to verify this variation (about 0.4 °C), considering the station history, a sensor calibration was carried out in laboratory and on site aimed to understand the reliability of the measurements in progress.

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