Groundwater Hydrology

Oral Abstract

Assessing Vegetation Root Zone Salinity and Saltwater Intrusion into the Shallow Unconfined Coastal Aquifer Under Climate Change in the Low-lying Coastal Alluvial Plains and Barrier Islands, East-central Florida (usa)

Wednesday, January 4
1:30 PM - 3:00 PM
Location: Chu Feng Hall

Saltwater intrusion has been recognized as a global issue that results in deterioration of coastal aquifer water quality and degradation of local ecosystem. In Cape Canaveral Barrier Island Complex (CCBIC) located in east-central Florida coastal area, detrimental effects resulted from saltwater intrusion have caused reduction of freshwater storage and alteration of the distribution and productivity of vegetation communities (shift in species composition from less salt-tolerant species to more salt-tolerant species), and the effects can be even worse under future climate change. Due to heterogeneity and easily mixing of saltwater and freshwater, coastal groundwater density and concentration is varied in local- and regional-scale, and numerical modeling is widely used to simulate the complicated procedures of saltwater intrusion. In this study, FEMWATER models are implemented and calibrated to quantitatively investigate the spatial and temporal variation of salinity in the vegetation root zone and simulate saltwater intrusion into the shallow unconfined surficial aquifer of the CCBIC under various climate change scenarios, since the surficial aquifer is of primary concern to climate change and the salinity content is extremely important to the bio-diversity ecosystems and the survival of the threatened and endanger species of wildlife. The purposes of this study include (1) simulation of vegetation root zone salinity; (2) simulation of saltwater intrusion into the shallow unconfined surficial aquifer; (3) mapping the high-risk areas that encountering environmental and ecological problems; (4) estimation of the recovery time of root zone salinity from saline to fresh after a typical storm surge or hurricane. 

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Assessing Vegetation Root Zone Salinity and Saltwater Intrusion into the Shallow Unconfined Coastal Aquifer Under Climate Change in the Low-lying Coastal Alluvial Plains and Barrier Islands, East-central Florida (usa)



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