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| Created: | Feb 07, 2023 at 6:26 p.m. | |
| Last updated: | Feb 07, 2023 at 6:27 p.m. | |
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| Sharing Status: | Public |
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Abstract
Climate change is expected to induce sea level rise in the German Bight, which is part of the North Sea, Germany. Climate change may also modify river discharge of the river Weser flowing into the German Bight, which will alter both pressure and salinity distributions in the river Weser estuary. To study the long-term interaction between sea level rise, discharge variations, a storm surge and coastal aquifer flow dynamics, a 3D seawater intrusion model was designed using the fully coupled surface-subsurface numerical model HydroGeoSphere. The model simulates the coastal aquifer as an integral system considering complexities such as variable-density flow, variably saturated flow, irregular boundary conditions, irregular land surface and anthropogenic structures (e.g., dyke, drainage canals, water gates). The simulated steady-state groundwater flow of the year 2009 is calibrated using PEST. In addition, four climate change scenarios are simulated based on the calibrated model: (i) sea level rise of 1 m, (ii) the salinity of the seaside boundary increases by 4 PSU (Practical Salinity Units), (iii) the salinity of the seaside boundary decreases by 12 PSU, and (iv) a storm surge with partial dyke failure. Under scenarios (i) and (iv), the salinized area expands several kilometers further inland during several years. Natural remediation can take up to 20 years. However, sudden short-term salinity changes in the river Weser estuary do not influence the salinized area in the coastal aquifer. The obtained results are useful for coastal engineering practices and drinking water resource management. (C) 2015 Elsevier B.V. All rights reserved.
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Additional Metadata
| Name | Value |
|---|---|
| DOI | 10.1016/j.jconhyd.2015.03.014 |
| Depth | 100 |
| Scale | < 1000 km² |
| Layers | 6-10 layers |
| Purpose | groundwater resources;salt water intrusion |
| GroMoPo_ID | 75 |
| IsVerified | True |
| Model Code | HydroGeoSphere |
| Model Link | https://doi.org/10.1016/j.jconhyd.2015.03.014 |
| Model Time | SS |
| Model Year | 2015 |
| Model Authors | Jie Yang, Thomas Graf, Thomas Ptak |
| Model Country | Germany |
| Data Available | report/paper only |
| Developer Email | yang@hydromech.uni-hannover.de |
| Dominant Geology | unconsolidated |
| Developer Country | Germany |
| Publication Title | Impact of climate change on freshwater resources in a heterogeneous coastal aquifer of Bremerhaven, Germany: A three-dimensional modeling study |
| Original Developer | No |
| Additional Information | |
| Integration or Coupling | Solute transport |
| Evaluation or Calibration | static water levels;dynamic water levels |
| Geologic Data Availability |
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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