Articles | Volume 17, issue 13
https://doi.org/10.5194/bg-17-3613-2020
https://doi.org/10.5194/bg-17-3613-2020
Research article
 | 
10 Jul 2020
Research article |  | 10 Jul 2020

Quantity and distribution of methane entrapped in sediments of calcareous, Alpine glacier forefields

Biqing Zhu, Manuel Kübler, Melanie Ridoli, Daniel Breitenstein, and Martin H. Schroth

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Latest update: 12 Jun 2024
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Short summary
We provide evidence that the greenhouse gas methane (CH4) is enclosed in calcareous glacier-forefield sediments across Switzerland. Geochemical analyses confirmed that this ancient CH4 has its origin in the calcareous parent bedrock. Our estimate of the total quantity of CH4 enclosed in sediments across Switzerland indicates a large CH4 mass (~105 t CH4). We produced evidence that CH4 is stable in its enclosed state, but additional experiments are needed to elucidate its long-term fate.
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