Articles | Volume 25, issue 5
Hydrol. Earth Syst. Sci., 25, 2895–2913, 2021
https://doi.org/10.5194/hess-25-2895-2021
Hydrol. Earth Syst. Sci., 25, 2895–2913, 2021
https://doi.org/10.5194/hess-25-2895-2021

Research article 28 May 2021

Research article | 28 May 2021

Early hypogenic carbonic acid speleogenesis in unconfined limestone aquifers by upwelling deep-seated waters with high CO2 concentration: a modelling approach

Franci Gabrovšek and Wolfgang Dreybrodt

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (further review by editor and referees) (07 Jan 2021) by Insa Neuweiler
AR by Franci Gabrovsek on behalf of the Authors (15 Feb 2021)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (05 Mar 2021) by Insa Neuweiler
RR by Steffen Birk (06 Apr 2021)
ED: Publish as is (28 Apr 2021) by Insa Neuweiler
AR by Franci Gabrovsek on behalf of the Authors (30 Apr 2021)  Author's response    Manuscript
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Short summary
The evolution of karst aquifers is often governed by solutions gaining their aggressiveness in depth. Although the principles of hypogene speleogenesis are known, modelling studies based on reactive flow in fracture networks are missing. We present a model where dissolution at depth is triggered by the mixing of waters of different origin and chemistry. We show how the initial position of the mixing zone and flow instabilities therein determine the position and shape of the final conduits.