Checking for non-preferred file/folder path names (may take a long time depending on the number of files/folders) ...
This resource contains some files/folders that have non-preferred characters in their name. Show non-conforming files/folders.
This resource contains content types with files that need to be updated to match with metadata changes. Show content type files that need updating.
| Authors: |
|
|
|---|---|---|
| Owners: |
|
This resource does not have an owner who is an active HydroShare user. Contact CUAHSI (help@cuahsi.org) for information on this resource. |
| Type: | Resource | |
| Storage: | The size of this resource is 1.8 KB | |
| Created: | Feb 08, 2023 at 5:17 a.m. | |
| Last updated: | Feb 08, 2023 at 5:17 a.m. | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
|---|---|
| Views: | 282 |
| Downloads: | 187 |
| +1 Votes: | Be the first one to this. |
| Comments: | No comments (yet) |
Abstract
Seawater intrusion due to sea level rise and climate change could significantly contaminate coastal groundwater resources, particularly in Florida, the flat low-land state in the United States. Based on the field investigation and hydrological measurements, a three-dimensional SEAWAT model is developed to evaluate the groundwater flow cycling and seawater intrusion to freshwater system in the Woodville Karst Plain (WKP), a typical karst groundwater system in the Floridan aquifer. The karst conduit network in the aquifer acts as fast flow pathway for groundwater flow and solute transport, so seawater could deeply intrude into the aquifer. Wakulla Spring, an inland spring 17 km from the coast and a coastal submarine spring, Spring Creek Spring Complex are connected through the conduit network. The flow direction between the two springs switches under various rainfall conditions in this region, thus the discharges at two karst springs are used to estimate the location of seawater/freshwater mixing interface. The SEAWAT modeling results indicate that the mixing interface, defined as 2 PSU (Practical Salinity Unit), intrudes 3 to 5 km through the subsurface karst conduit during the dry season and severely contaminates nearly 1 km width of groundwater around the conduit. The salinity distribution and the distance of seawater intrusion through the conduit system are very sensitive to precipitation variation and the sea level boundary condition. Furthermore, predictions are made for seawater intrusion to the aquifer under various sea level rise, precipitation scenarios and water pumping. The results show that the seawater intrusion could reach and contaminate inland freshwater systems if sea level rises 1.0 m or during a long-term no-precipitation season. This study provides insights for modeling and predicting the vulnerability of a coastal karst aquifer through the simulation of variable-density flow.
Subject Keywords
Coverage
Spatial
Content
Additional Metadata
| Name | Value |
|---|---|
| DOI | 10.1016/j.jhydrol.2019.124171 |
| Depth | 300 |
| Scale | 1 001 - 10 000 km² |
| Layers | 12 |
| Purpose | Groundwater resources |
| GroMoPo_ID | 235 |
| IsVerified | True |
| Model Code | MODFLOW;SEAWAT |
| Model Link | https://doi.org/10.1016/j.jhydrol.2019.124171 |
| Model Time | SS |
| Model Year | 2019 |
| Model Authors | Xu, ZY; Hu, BX; Xu, ZX; Wu, XJ |
| Model Country | United States |
| Data Available | Report/paper only |
| Developer Email | billhu@jnu.edu.cn; zexuanxu@lbl.gov |
| Dominant Geology | Carbonate (including karst) |
| Developer Country | USA; Peoples R China |
| Publication Title | Numerical study of groundwater flow cycling controlled by seawater/freshwater interaction in Woodville Karst Plain |
| Original Developer | No |
| Additional Information | Based on the field investigation and hydrological measurements, a three-dimensional SEAWAT model is developed to evaluate the groundwater flow cycling and seawater intrusion to freshwater system in the Woodville Karst Plain (WKP), a typical karst groundwater system in the Floridan aquifer. |
| Integration or Coupling | Water management |
| Evaluation or Calibration | |
| Geologic Data Availability | Yes |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
Comments
There are currently no comments
New Comment