HGS

HydroGeoSphere Language Grammar

Syntax highlighting is now available for Grok input files! Dr. Claus Haslauer from the University of Tübingen created the syntax highlighting functionality. Claus' highlighting functionality works on both TextMate and SublimeText editors (OSX and Windows machines) and the features include:

  • "Skip on" and "Skip off" is greyed out.
  • "Problem description" at the beginning is greyed out.
  • "!" are greyed out (as comments).
  • Input files are coloured.
  • Numbers are highlighted.
  • Domain names (porous medium, surface, etc.) are highlighted.
  • Keywords ('end', 'clear', 'choose') are highlighted.

To find out more information on the Syntax Highlighting please visit Claus' github page.

HGS Research Highlight - Large water-table response to rainfall in a shallow bedrock aquifer having minimal overburden cover

Authors: Owen W. Miles and Kent S. Novakowski

  Model domain showing a hydraulic head rise during an infiltration event.

Model domain showing a hydraulic head rise during an infiltration event.

Rapid recharge events manifested as significant increases in hydraulic head have been observed in many fractured bedrock aquifers around the world. Often the response in hydraulic head exceeds what would be observed in an equivalent porous media by more than an order of magnitude. As the mechanisms that cause these events are poorly understood particularly under highly-transient conditions, a detailed investigation was conducted at a well-characterized field site in eastern Canada.

Using HydroGeoSphere, three-dimensional numerical simulations were conducted to reproduce the response in the piezometer for both short (24 h) and long (one month) timescales. Modeling was performed with both a discrete fracture network, and equivalent porous media approaches, though the best calibrations were achieved with an equivalent porous media approach. The numerical simulations were used to determine what parameters have the greatest impact on controlling rapid recharge. Based on this study it was concluded that the large magnitude head rises recorded in this piezometer are a result of recharge to steeply inclined fractures exposed on or immediately adjacent to the outcrop. The modelling also showed that as little as 0.4 m of drift material can completely eliminate the response in the well especially during times when evapotranspiration is high.

Find out more here.

Excited to be sharing a booth with IBM at the Canadian Water Summit!

We are excited to be sharing a booth with IBM at the Canadian Water Summit in Toronto, Canada today.

Stop by the booth to learn more about how we are combining our hydrologic modelling platform, HydroGeoSphere, with IBM's data analytics platforms, Cognos, to support decision making at the watershed scale related to conditions ranging from flood to drought.

Post-doctoral research opportunity in quantitative hydrologic science

Assiniboine River Basin – Land use change impact assessment

The successful candidate for this position will spearhead a high-resolution modeling analysis of land-use change influences on the hydrologic characteristics of the Assiniboine River Basin, with specific focus on flood and drought resiliency. As part of the larger Assiniboine River Basin team at Aquanty......

HGS Parallelization - Best Practices

Fully-integrated hydrologic simulations, such as those performed with HydroGeoSphere, involve highly nonlinear processes, and thus the computational efficiency of the model becomes a critical issue for those performing hydrologic simulations. HGS was parallelized by Hwang et al., 2014 to over come this challenge.

The post summarizes how to setup a parallel HGS simulation, as well as some general best practices for running a parallel simulation.

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. ...