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| Type: | Resource | |
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| Created: | Feb 08, 2023 at 8:16 p.m. | |
| Last updated: | Feb 08, 2023 at 8:17 p.m. | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
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| Views: | 747 |
| Downloads: | 217 |
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Abstract
Clarifying the variations of groundwater recharge response to a changing non-stationary hydrological process is important for efficiently managing groundwater resources, particularly in regions with limited precipitation that face the risk of water shortage. However, the rate of aquifer recharge is difficult to evaluate in terms of large annual-variations and frequency of flood events. In our research, we attempt to simulate related groundwater recharge processes under variable climate conditions using the SWAT Model, and validate the groundwater recharge using the Hydrus Model. The results show that annual average groundwater recharge comprised approximately 33% of total precipitation, however, larger variation was found for groundwater recharge and surface runoff compared to evapotranspiration, which fluctuated with annual precipitation variations. The annual variation of groundwater resources is shown to be related to precipitation. In spatial variations, the upstream is the main surface water discharge area; the middle and downstream areas are the main groundwater recharge areas. Validation by the Hydrus Model shows that the estimated and simulated groundwater levels are consistent in our research area. The groundwater level shows a quick response to the groundwater recharge rate. The rainfall intensity had a great impact on the changes of the groundwater level. Consequently, it was estimated that large spatial and temporal variation of the groundwater recharge rate would be affected by precipitation uncertainty in future.
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Additional Metadata
| Name | Value |
|---|---|
| DOI | 10.5194/piahs-371-143-2015 |
| Depth | |
| Scale | < 10 km² |
| Layers | |
| Purpose | Groundwater resources |
| GroMoPo_ID | 405 |
| IsVerified | True |
| Model Code | HYDRUS |
| Model Link | https://doi.org/10.5194/piahs-371-143-2015 |
| Model Time | |
| Model Year | 2015 |
| Model Authors | Jin, G; Shimizu, Y; Onodera, S; Saito, M; Matsumori, K |
| Model Country | Japan |
| Data Available | Report/paper only |
| Developer Email | jinguangzhe@live.cn |
| Dominant Geology | Unsure |
| Developer Country | Japan |
| Publication Title | Evaluation of drought impact on groundwater recharge rate using SWAT and Hydrus models on an agricultural island in western Japan |
| Original Developer | No |
| Additional Information | |
| Integration or Coupling | |
| Evaluation or Calibration | Unsure |
| Geologic Data Availability | No |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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