Three-dimensional quantification of soil hydraulic properties using X-ray computed tomography and image-based modeling
We demonstrate the application of a high-resolution X-ray Computed Tomography (CT) method to quantify water distribution in soil pores under successive reductive drying. We focus on the wet end of the water release characteristic (WRC) (0 to −75 kPa) to investigate changes in soil water distribution...
| Main Authors: | , , , , , |
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| Format: | Article |
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American Geophysical Union
2015
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| Online Access: | https://eprints.nottingham.ac.uk/41200/ |
| _version_ | 1848796220335587328 |
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| author | Tracy, Saoirse R. Daly, Keith R. Sturrock, Craig J. Crout, Neil M.J. Mooney, Sacha J. Roose, Tiina |
| author_facet | Tracy, Saoirse R. Daly, Keith R. Sturrock, Craig J. Crout, Neil M.J. Mooney, Sacha J. Roose, Tiina |
| author_sort | Tracy, Saoirse R. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We demonstrate the application of a high-resolution X-ray Computed Tomography (CT) method to quantify water distribution in soil pores under successive reductive drying. We focus on the wet end of the water release characteristic (WRC) (0 to −75 kPa) to investigate changes in soil water distribution in contrasting soil textures (sand and clay) and structures (sieved and field structured) and to determine the impact of soil structure on hydraulic behavior. The 3-D structure of each soil was obtained from the CT images (at a 10 μm resolution). Stokes equations for flow were solved computationally for each measured structure to estimate hydraulic conductivity. The simulated values obtained compared extremely well with the measured saturated hydraulic conductivity values. By considering different sample sizes we were able to identify the smallest possible representative sample size which is required to determine a globally valid hydraulic conductivity. |
| first_indexed | 2025-11-14T19:44:31Z |
| format | Article |
| id | nottingham-41200 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:44:31Z |
| publishDate | 2015 |
| publisher | American Geophysical Union |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-412002020-05-04T20:10:11Z https://eprints.nottingham.ac.uk/41200/ Three-dimensional quantification of soil hydraulic properties using X-ray computed tomography and image-based modeling Tracy, Saoirse R. Daly, Keith R. Sturrock, Craig J. Crout, Neil M.J. Mooney, Sacha J. Roose, Tiina We demonstrate the application of a high-resolution X-ray Computed Tomography (CT) method to quantify water distribution in soil pores under successive reductive drying. We focus on the wet end of the water release characteristic (WRC) (0 to −75 kPa) to investigate changes in soil water distribution in contrasting soil textures (sand and clay) and structures (sieved and field structured) and to determine the impact of soil structure on hydraulic behavior. The 3-D structure of each soil was obtained from the CT images (at a 10 μm resolution). Stokes equations for flow were solved computationally for each measured structure to estimate hydraulic conductivity. The simulated values obtained compared extremely well with the measured saturated hydraulic conductivity values. By considering different sample sizes we were able to identify the smallest possible representative sample size which is required to determine a globally valid hydraulic conductivity. American Geophysical Union 2015-02 Article PeerReviewed Tracy, Saoirse R., Daly, Keith R., Sturrock, Craig J., Crout, Neil M.J., Mooney, Sacha J. and Roose, Tiina (2015) Three-dimensional quantification of soil hydraulic properties using X-ray computed tomography and image-based modeling. Water Resources Research, 51 (2). pp. 1006-1022. ISSN 1944-7973 http://onlinelibrary.wiley.com/doi/10.1002/2014WR016020/abstract doi:10.1002/2014WR016020 doi:10.1002/2014WR016020 |
| spellingShingle | Tracy, Saoirse R. Daly, Keith R. Sturrock, Craig J. Crout, Neil M.J. Mooney, Sacha J. Roose, Tiina Three-dimensional quantification of soil hydraulic properties using X-ray computed tomography and image-based modeling |
| title | Three-dimensional quantification of soil hydraulic properties using X-ray computed tomography and image-based modeling |
| title_full | Three-dimensional quantification of soil hydraulic properties using X-ray computed tomography and image-based modeling |
| title_fullStr | Three-dimensional quantification of soil hydraulic properties using X-ray computed tomography and image-based modeling |
| title_full_unstemmed | Three-dimensional quantification of soil hydraulic properties using X-ray computed tomography and image-based modeling |
| title_short | Three-dimensional quantification of soil hydraulic properties using X-ray computed tomography and image-based modeling |
| title_sort | three-dimensional quantification of soil hydraulic properties using x-ray computed tomography and image-based modeling |
| url | https://eprints.nottingham.ac.uk/41200/ https://eprints.nottingham.ac.uk/41200/ https://eprints.nottingham.ac.uk/41200/ |