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.

Permafrost station at Sommeiller Pass (NW Italy): from the monitoring to reference site and methods / Paro, Luca; Guglielmin, Mauro; Merlone, Andrea; Coppa, Graziano; Musacchio, Chiara; Sanna, Francesca. - (2019), pp. 831-832. (Intervento presentato al convegno 5th European Conference on Permafrost tenutosi a Chamonix, France nel 25-29 giugno 2018).

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

Andrea Merlone;Graziano Coppa;Chiara Musacchio;
2019

Abstract

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.
2019
5th European Conference on Permafrost
25-29 giugno 2018
Chamonix, France
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/71570
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