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GroMoPo Metadata for Shenzen FEFLOW model


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Created: Feb 07, 2023 at 6:13 p.m.
Last updated: Feb 07, 2023 at 6:14 p.m.
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Abstract

During the 1990s, groundwater overexploitation has resulted in seawater intrusion in the coastal aquifer of the Shenzhen city, China. Although water supply facilities have been improved and alleviated seawater intrusion in recent years, groundwater overexploitation is still of great concern in some local areas. In this work we present a three-dimensional density-dependent numerical model developed with the FEFLOW code, which is aimed at simulating the extent of seawater intrusion while including tidal effects and different groundwater pumping scenarios. Model calibration, using waterheads and reported chloride concentration, has been performed based on the data from 14 boreholes, which were monitored from May 2008 to December 2009. A fairly good fitness between the observed and computed values was obtained by a manual trial-and-error method. Model prediction has been carried out forward 3 years with the calibrated model taking into account high, medium and low tide levels and different groundwater exploitation schemes. The model results show that tide-induced seawater intrusion significantly affects the groundwater levels and concentrations near the estuarine of the Dasha river, which implies that an important hydraulic connection exists between this river and groundwater, even considering that some anti-seepage measures were taken in the river bed. Two pumping scenarios were considered in the calibrated model in order to predict the future changes in the water levels and chloride concentration. The numerical results reveal a decreased tendency of seawater intrusion if groundwater exploitation does not reach an upper bound of about 1.32 x 10(4) m(3)/d. The model results provide also insights for controlling seawater intrusion in such coastal aquifer systems.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
China
North Latitude
22.6013°
East Longitude
114.0546°
South Latitude
22.4815°
West Longitude
113.9323°

Content

Additional Metadata

Name Value
DOI 10.1007/s12040-013-0273-3
Depth 30
Scale < 100 km²
Layers 2-5 layers
Purpose groundwater resources;salt water intrusion
GroMoPo_ID 66
IsVerified True
Model Code Feflow
Model Link https://doi.org/10.1007/s12040-013-0273-3
Model Time 2008-2009
Model Year 2013
Model Authors Wei Lu, Qingchun Yang, Jordi D Martin, Ricardo Juncosa
Model Country China
Data Available report/paper only;Geological input available;Cross-section provided in the paper
Developer Email qyang@udc.es
Dominant Geology unconsolidated
Developer Country China
Publication Title Numerical modelling of seawater intrusion in Shenzhen (China) using a 3D density-dependent model including tidal effects
Original Developer No
Additional Information
Integration or Coupling Solute transport
Evaluation or Calibration dynamic water levels;contaminant concentrations
Geologic Data Availability

How to Cite

GroMoPo, D. Zamrsky (2023). GroMoPo Metadata for Shenzen FEFLOW model, HydroShare, http://www.hydroshare.org/resource/b5449e815de84c5cb3fdcdd62f258dd1

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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