HGS Research Highlight - Topographic control on groundwater salinization due to ocean surge inundation
Ocean surges introduce saltwater to coastal aquifers and threaten fresh groundwater resources. Topography controls the spatial and temporal dynamics of surge inundation processes, which leads to variable depths of saltwater inundation and heterogeneous infiltration. Our study explored the impact of coastal landforms (e.g. ponds, dunes, barrier island, and channels) by simulating surface water flow over synthetic and real-world topographies, and associated subsurface flow to systematically assess the impact on surge-introduced salinization of coastal aquifers...
HGS Research Highlight - Solute transport processes in flow-event-driven stream–aquifer interaction
This post features a recent study by Xie et al., 2016, who used HydroGeoSphere to investigate the interaction between streams and groundwater controls on key features of stream hydrographs and chemographs.
HGS Research Highlight - Dual permeability modeling of tile drain management influences on hydrology and nutrient transport in macroporous soil
This post features a recent study by Frey et al., 2016 who used 2-dimensional dual permeability HydroGeoSphere models to simulate the flow and transport of liquid swine manure and rhodamine tracer application on a macroporous clay loam under controlled (CD) and free drainage (FD) tile management.
HGS Research Highlight - Coupled atmospheric, land surface, and subsurface modeling: Exploring water and energy feedbacks in three-dimensions
This post highlights the recent study by Davison et al. (2015) on the coupling of HGS to an Atmospheric Boundary Layer (ABL) model. Implementing the coupled HGS-ABL model the authors found ...
HGS Research Highlight - An exploration of coupled surface-subsurface solute transport in a fully integrated catchment model
Coupling surface and subsurface water flow is one of the strengths of fully integrated hydrological codes such as HydroGeoSphere (HGS). Following the coupling of surface-subsurface water flow, is coupling of surface-subsurface solute transport, although this subject has received less attention in the literature. ...
HGS Research Highlight - Holding and Allen 2015
Wave overwash events (such as storm surge and tsunamis) have the potential to result in severe consequences to the freshwater resources of small islands as a result of salt contamination of the aquifer. This study used numerical modelling to evaluate the freshwater lens response and recovery to overwash events for various island hydrogeological settings - or island types - that are observed worldwide