| Titre | A development of a fully integrated groundwater-surface-water modelling platform for the Phanerozoic basin region of southern Ontario |
| Télécharger | Téléchargement (publication entière) |
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| Licence | Veuillez noter que la Licence du gouvernement
ouvert - Canada remplace toutes les licences antérieures. |
| Auteur | Frey, S; Khader, O; Taylor, A; Russell, H ; Lapen, D; Berg, S; Sudicky, E |
| Source | Regional-Scale Groundwater Geoscience in Southern Ontario: An Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario Geoscientists Open House; par Russell, H A J; Ford, D; Holysh, S; Priebe, E H; Commission géologique du
Canada, Dossier public 8528, 2019 p. 11, https://doi.org/10.4095/313582  Accès ouvert |
| Année | 2019 |
| Séries alt. | Ontario Geological Survey, Open File Report 6349 |
| Éditeur | Ressources naturelles Canada |
| Éditeur | Gouvernement de l'Ontario |
| Réunion | Regional-Scale Groundwater Geoscience in Southern Ontario: Open House; Guelph; CA; février 27-28, 2019 |
| Document | dossier public |
| Lang. | anglais |
| DOI | https://doi.org/10.4095/313582 |
| Media | en ligne; numérique |
| Référence reliée | Cette publication est contenue dans Regional-Scale Groundwater Geoscience in Southern Ontario: An Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario Geoscientists Open House |
| Formats | pdf |
| Province | Ontario |
| SNRC | 30; 31B; 31C; 31D; 31E; 31G; 40; 41A; 41G; 41H/03; 41H/04; 41H/05; 41H/06; 41H/12; 41H/13 |
| Région | le sud de l'Ontario; Great Lakes |
| Lat/Long OENS | -84.0000 -74.0000 46.0000 41.5000 |
| Sujets | eau souterraine; établissement de modèles; ressources en eau souterraine; régimes des eaux souterraines; mouvement des eaux souterraines; aquifères; eaux de surface; bassins sédimentaires; regimes
d'écoulement; mécanismes de transport; substances polluantes; géologie du substratum rocheux; sediments; sols; milieu hydrologique; climat; Gestion des risques; Couverture du sol; Changement climatique; Population; Agriculture; Eaux usées;
hydrogéologie; géologie des dépôts meubles/géomorphologie; géochimie; géologie régional; géologie de l'environnement; Nature et environnement; Phanérozoïque; Cénozoïque; Quaternaire; Paléozoïque; Silurien |
| Programme | Géoscience des eaux souterraines Caractéristiques d'aquifères et support cartographique |
| Diffusé | 2019 02 08 |
| Résumé | (disponible en anglais seulement)
In early 2018, construction began on a HydroGeoSphere (HGS) fully-integrated GW-SW modelling platform for Southern Ontario, with high resolution subsurface
hydro-stratigraphy based on the GSC-OGS 3D geological modelling initiative.
In total, four HGS models were constructed, using a combination of coarse (41,000 nodes per layer) and fine (133,000 nodes per layer) unstructured finite element meshes,
and with the full Phanerozoic sequence (represented by 21 hydrostratigraphic/soil layers) as well as a version with the Phanerozoic sequence cut off at the sulfur-brine interface (represented by 16 hydrostratigraphic/soil layers). During model
construction, extensive effort was devoted to characterizing and reducing model structural uncertainty, with the end result being a heterogeneous subsurface parameterization (which includes effective representation of key karst units) underlying a
temporally and spatially varying land surface that incorporates key driving factors for overland flow and evapotranspiration.
Results from validation and testing demonstrate that the models can successfully capture the spatially varying transient
behavior of the coupled SW and GW flow system at the regional scale, based on simulated vs observed surface water flows and groundwater heads at a respective 27 hydrograph locations and 300 monitoring well locations dispersed across the model domain.
Further comparison of the simulation results from the different models combined with the different levels of temporal forcing (steady-state vs. transient) provides insight on how model spatial and temporal resolution can influence simulated heads and
stream flows, and can thus be used to help determine prudent use cases for models incorporating varying levels of detail.
With the proof-of-concept now near completion, there are numerous applications for the modelling platform and its underlying
database to be used to further develop our understanding of regional scale hydrologic processes within Southern Ontario, as well as to inform smaller scale investigations that would benefit from insight on how regional flow systems may be influencing
localized areas of interest. Furthermore, the platform will also serve as a tool to help identify current limitations in our knowledge of regional groundwater flow, to help guide future data collection initiatives, and to quantitatively test
hypotheses relating to how different conceptual model realizations of subsurface hydrostratigraphy can influence hydrologic behavior.
This presentation will provide a brief overview of the methodology employed towards model construction, followed
by a discussion of model performance and spatial-temporal sensitivities, and will finish with a set of example applications targeting questions relating to how groundwater - surface water interactions govern inflow to the Great Lakes under different
climate conditions. |
| Sommaire | (Résumé en langage clair et simple, non publié)
Volume des résumés pour la Commission géologique de l'Ontario et la commission geologique du Canada géoscience des eaux souterraines de la CGC
portes ouvertes avec conservation Ontario. |
| GEOSCAN ID | 313582 |
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