Articles | Volume 26, issue 5
https://doi.org/10.5194/nhess-26-2249-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-26-2249-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
13 May 2026
Research article |
| 13 May 2026
| 13 May 2026
Monitoring diffuse volcanic degassing with seismic ambient noise
Geosciences Barcelona (GEO3BCN, CSIC), Lluis Solé i Sabarís s/n, Barcelona, Spain
Institute of Marine Sciences (ICM, CSIC), Passeig Marítim de la Barceloneta 37–49, Barcelona, Spain
Martin Schimmel
Geosciences Barcelona (GEO3BCN, CSIC), Lluis Solé i Sabarís s/n, Barcelona, Spain
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Short summary
Mantle-derived gases can seep to the surface before a volcanic eruption, but detecting them is difficult when emissions are weak. We used seismic noise from individual stations at Cumbre Vieja Volcano, La Palma, to monitor shallow gas accumulation being modulated by atmospheric cycles. We find clear links between pressure variations and gas release, with a marked increase months before the 2021 eruption, highlighting potential for early warning and hazard assessment.
Mantle-derived gases can seep to the surface before a volcanic eruption, but detecting them is...
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