Temperature variations in caves induced by atmospheric pressure variations—Part 2: Unveiling hidden thermal signals

Frédéric Perrier,François Bourges,Frédéric Girault,Jean-Louis Le Mouël,Dominique Genty,Bruno Lartiges,Rémi Losno,Stéphane Bonnet

Geosystems and Geoenvironment（2022）

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摘要

•Temperature variations (PIT) induced by atmospheric pressure dominate in caves.•After the transfer functions are determined, the PIT variations can be subtracted.•PIT corrected residual signals studied in four natural caves in France.•Temperature signals as small as 10−3 °C when visitors are present then observable.•Temperature signals associated with infiltration transients or resonances unveiled.

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关键词

Atmospheric pressure,Caves,Natural ventilation,Preservation,Barometric pumping,Critical Zone,Helmholtz resonance

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