Rapid Estimation of Volumetric Groundwater Recharge in the Vadose Zone via Ground Penetrating Radar
Saturation in the vadose zone is known to reduce the ground penetrating radar (GPR) electromagnetic wave velocities. We examine the impact of increased water content in highly-permeable beach and dune systems on GPR velocities along coastal margin of Perth, Western Australia. We acquire repeat GPR t...
| Main Authors: | , |
|---|---|
| Format: | Conference Paper |
| Published: |
2018
|
| Online Access: | https://doi.org/10.1071/ASEG2018abP091 http://hdl.handle.net/20.500.11937/69072 |
| _version_ | 1848761960414314496 |
|---|---|
| author | Costall, A. Harris, Brett |
| author_facet | Costall, A. Harris, Brett |
| author_sort | Costall, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Saturation in the vadose zone is known to reduce the ground penetrating radar (GPR) electromagnetic wave velocities. We examine the impact of increased water content in highly-permeable beach and dune systems on GPR velocities along coastal margin of Perth, Western Australia. We acquire repeat GPR transects in May and August before and after annual high rainfall periods. The assumption of exceedingly flat water table reflector permits us to estimated change in GPR velocity at successive dates. This change in velocity can be translated to an estimated change in water saturation via the Topp relationship which is an imperial mapping of water saturation to dielectric permittivity. |
| first_indexed | 2025-11-14T10:39:58Z |
| format | Conference Paper |
| id | curtin-20.500.11937-69072 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:39:58Z |
| publishDate | 2018 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-690722019-02-19T05:36:14Z Rapid Estimation of Volumetric Groundwater Recharge in the Vadose Zone via Ground Penetrating Radar Costall, A. Harris, Brett Saturation in the vadose zone is known to reduce the ground penetrating radar (GPR) electromagnetic wave velocities. We examine the impact of increased water content in highly-permeable beach and dune systems on GPR velocities along coastal margin of Perth, Western Australia. We acquire repeat GPR transects in May and August before and after annual high rainfall periods. The assumption of exceedingly flat water table reflector permits us to estimated change in GPR velocity at successive dates. This change in velocity can be translated to an estimated change in water saturation via the Topp relationship which is an imperial mapping of water saturation to dielectric permittivity. 2018 Conference Paper http://hdl.handle.net/20.500.11937/69072 10.1071/ASEG2018abP091 https://doi.org/10.1071/ASEG2018abP091 restricted |
| spellingShingle | Costall, A. Harris, Brett Rapid Estimation of Volumetric Groundwater Recharge in the Vadose Zone via Ground Penetrating Radar |
| title | Rapid Estimation of Volumetric Groundwater Recharge in the Vadose Zone via Ground Penetrating Radar |
| title_full | Rapid Estimation of Volumetric Groundwater Recharge in the Vadose Zone via Ground Penetrating Radar |
| title_fullStr | Rapid Estimation of Volumetric Groundwater Recharge in the Vadose Zone via Ground Penetrating Radar |
| title_full_unstemmed | Rapid Estimation of Volumetric Groundwater Recharge in the Vadose Zone via Ground Penetrating Radar |
| title_short | Rapid Estimation of Volumetric Groundwater Recharge in the Vadose Zone via Ground Penetrating Radar |
| title_sort | rapid estimation of volumetric groundwater recharge in the vadose zone via ground penetrating radar |
| url | https://doi.org/10.1071/ASEG2018abP091 http://hdl.handle.net/20.500.11937/69072 |