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| Created: | Feb 08, 2023 at 8:26 p.m. | |
| Last updated: | Feb 08, 2023 at 8:27 p.m. | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
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| Views: | 643 |
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Abstract
The objective of this research is to investigate the best management options for mitigating seawater intrusion through real-time coupling between rainfall-runoff, infiltration, surface water and groundwater system. The amount of runoff and discharge from sub-catchment after rainfall was first simulated by the rainfall-runoff model. This simulated discharge was connected with the regional surface water model to simulate the water level in the major rivers of the area. The simulated water levels in the rivers were later given as the river stage to the groundwater model through an interface module. The effect of seawater intrusion was assessed by four scenarios such as construction of additional check dams, 1 m increase in crest level of existing check dam, rejuvenation of defunct water bodies, and termination of pumping. The predicted result shows that there is an increase in the groundwater head of about 4.2 m in the unconfined aquifer and 7.5 m in the semi-confined aquifer by the end of 2030. The chloride concentration is decreased by about 1100 mg/l and 800 mg/l in the unconfined and semi-confined aquifers, respectively, by the end of 2030 with scenario 4. The areal extent has been decreased to the coast of around 5 km with scenario 4. This clearly explains that the effect of seawater intrusion is reduced by implementing mitigating measures. Finally, the real-time integrating model demonstrated that the level of groundwater is increased and the concentration of chloride decreased which helps to restore aquifer and solve the seawater intrusion problems in this study area.
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Spatial
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Additional Metadata
| Name | Value |
|---|---|
| DOI | 10.1007/s12665-021-09836-8 |
| Depth | |
| Scale | 1 001 - 10 000 km² |
| Layers | 8 |
| Purpose | Salt water intrusion |
| GroMoPo_ID | 412 |
| IsVerified | True |
| Model Code | Feflow |
| Model Link | https://doi.org/10.1007/s12665-021-09836-8 |
| Model Time | 1996-2003 |
| Model Year | 2021 |
| Model Authors | Rajaveni, SP; Nair, IS; Bhola, PK; Zabel, A; Monninkhoff, B; Elango, L |
| Model Country | India |
| Data Available | Report/paper only |
| Developer Email | elango34@hotmail.com |
| Dominant Geology | Model focuses on multiple geologic materials |
| Developer Country | India; Germany |
| Publication Title | Identification of management options to mitigate seawater intrusion in an overexploited multi-layered coastal aquifer by integrated rainfall-runoff, surface water and density-dependent groundwater flow modeling |
| Original Developer | No |
| Additional Information | |
| Integration or Coupling | Surface water;Climate |
| Evaluation or Calibration | Static water levels;Dynamic water levels |
| 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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