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| Created: | Feb 08, 2023 at 8:09 p.m. | |
| Last updated: | Feb 08, 2023 at 8:10 p.m. | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
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| Views: | 581 |
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Abstract
The present work investigates the response of shallow, coastal unconfined aquifers to anticipated overdraft conditions and climate change effect using numerical simulation. The groundwater flow model MODFLOW and variable density groundwater model SEAWAT are used for this investigation. The transmissivity and specific yield estimated from the existing database range from 10 to 810 m (2)/day and 0.08% to 10.92% respectively. After successful calibration with Nash-Sutcliffe efficiency greater than 0.80, the values of horizontal hydraulic conductivity and specific yield of the unconfined aquifer were set in the range 1.85-61.90 m/day and 0.006-0.24 respectively. After validating the model, it is applied for forecasting the aquifer's response to anticipated future scenarios of groundwater draft, recharge rate and sea level rise. The findings of the study illustrate that saltwater intrusion is intensified in the area adjoining the tidal rivers, rather than that due to the sea alone. Of all the scenarios simulated, the immense negative impact on groundwater quality emerges due to overdraft conditions and reduced recharge with the areal extent of seawater intrusion exceeding about 67% (TDS > 1 kg/m (3)). The study also arrives at the conclusion that, regional sea level rise of 1 mm/year has no impact on the groundwater dynamics of the aquifer.
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Additional Metadata
| Name | Value |
|---|---|
| DOI | 10.1007/s12040-016-0719-5 |
| Depth | 30 |
| Scale | 11 - 101 km² |
| Layers | 1 |
| Purpose | Salt water intrusion |
| GroMoPo_ID | 400 |
| IsVerified | True |
| Model Code | MODFLOW;SEAWAT |
| Model Link | https://doi.org/10.1007/s12040-016-0719-5 |
| Model Time | 2011-2014 |
| Model Year | 2016 |
| Model Authors | Lathashri, UA; Mahesha, A |
| Model Country | India |
| Data Available | Report/paper only |
| Developer Email | ua.latha@gmail.com |
| Dominant Geology | Model focuses on multiple geologic materials |
| Developer Country | India |
| Publication Title | Groundwater sustainability assessment in coastal aquifers |
| Original Developer | No |
| Additional Information | |
| Integration or Coupling | Solute transport |
| Evaluation or Calibration | Hydrogeologic conditions |
| 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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