Numéro |
Sci. Tech. Energ. Transition
Volume 79, 2024
|
|
---|---|---|
Numéro d'article | 48 | |
Nombre de pages | 15 | |
DOI | https://doi.org/10.2516/stet/2024043 | |
Publié en ligne | 7 août 2024 |
Regular Article
A natural hydrogen seep in Western Australia: Observed characteristics and controls
1
CSIRO Energy, 26 Dick Perry Ave, Kensington, Western Australia 6151, Australia
2
Edith Cowan University School of Engineering, 270 Joondalup Drive, Joondalup, Western Australia 6027, Australia
3
Currently at INPEX Australia, 100 St Georges Tce, Perth, Western Australia 6000, Australia
* Corresponding author: krista.davies@csiro.au
Received:
21
May
2024
Accepted:
5
June
2024
Natural hydrogen (H2) is a promising resource for the energy industry’s transition to zero-carbon fuels. However, its extent and feasibility for exploitation remain unclear. A key step towards discovering subsurface dihydrogen accumulations is detecting H2 seeps. This study presents the first autonomous, multi-gas monitoring of a natural hydrogen seep in Australia, where dihydrogen, carbon dioxide, and hydrogen sulphide were measured together. The research revealed significant H2 seepage on the Yilgarn Craton in Western Australia, with seasonal fluctuations: high emissions after dry summers and reduced emissions following rainfall due to increased groundwater levels. Groundwater appears to act as a seasonal inhibitor to H2 seepage through the near subsurface potentially leading to false negatives in soil gas surveys post-rainfall and in low-lying areas. This work provides fundamental data for natural hydrogen exploration and therefore aids in the implementation of a large-scale hydrogen economy.
Key words: Natural hydrogen / Surface seep / Yilgarn Craton / Soil gas monitoring / Groundwater
© The Author(s), published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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