Sahoo, M. orcid.org/0000-0003-3552-4691, Bentley, P., Smith, A. et al. (4 more authors) (2025) A laboratory-scale physical model for freeze–thaw studies in soil columns under simulated climate change conditions. Environmental Science and Pollution Research, 32 (9). pp. 5293-5301. ISSN 0944-1344
Abstract
Responses of soils to climate warming during winter can be studied by monitoring soil temperature variations in the vadose zone. Freeze–thaw cycles during winter can have a significant impact on soil biogeochemical and physical processes. Observing soil temperature at different depths offers important insights into heat availability, which influences biogeochemical activity and solute movement driven by temperature gradients. However, it is difficult to replicate the relevant processes in soil columns without maintaining freezing temperatures with an unfrozen soil layer below the freezing interface. This paper describes the development and experimental verification of a laboratory-scale physical model to assess the effect of freeze–thaw cycles on biogeochemical processes in unsaturated soil. The results show that the experimental design can (i) induce cyclical freezing of soil down to desirable depths, (ii) maintain vertical temperature gradients and (iii) ensure the rest of the column remains unfrozen below the freezing interface for pore water sampling. The rate of freezing is suitable for quick freeze–thaw cycles (0.19 °C/min). This setup can be further developed to observe solute transport and attenuation in variably-saturated soil and soil moisture status for different freeze–thaw regimes under simulated climate change scenarios.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © The Author(s). Except as otherwise noted, this author-accepted version of a journal article published in Environmental Science and Pollution Research is made available via the University of Sheffield Research Publications and Copyright Policy under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ |
Keywords: | Freeze–thaw cycle; Freezing jacket; Soil column; Soil temperature; Unsaturated soil |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > School of Mechanical, Aerospace and Civil Engineering |
Funding Information: | Funder Grant number UK RESEARCH AND INNOVATION 101110991 EP/Y015843/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 20 Feb 2025 11:49 |
Last Modified: | 14 Mar 2025 15:11 |
Status: | Published |
Publisher: | Springer Science and Business Media LLC |
Refereed: | Yes |
Identification Number: | 10.1007/s11356-025-36053-8 |
Related URLs: | |
Sustainable Development Goals: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:223606 |
Download
Filename: Manuscript_ESPR_paper_revised_author-accepted_version.pdf
Licence: CC-BY 4.0