GEOSCAN, résultats de la recherche


TitreGIS spatial statistical analysis of the groundwater in the Oak Ridges Moraine area, Ontario
AuteurZhang, Z
ThèseMSc, York University
Source 2001, 158 pages
SNRC30M/13; 30M/14; 30M/15; 30M/16NW; 30M/16NE; 31C/04SW; 31C/04NW; 31D/01; 31D/02; 31D/03; 31D/04
Lat/Long OENS-80.0000 -77.7500 44.2500 43.7500
Sujetseau souterraine; écoulement de la nappe d'eau souterraine; ressources en eau souterraine; régimes des eaux souterraines; modèles; dépôts glaciaires; tills; aquifères; analyse statistique; puits d'eau; topographie; Moraine d'Oak Ridges ; système d'information géographique; applications de système d'information géographique; géomathématique; hydrogéologie; Cénozoïque; Quaternaire
Illustrationssketch maps; tables; graphs; histograms
Résumé(disponible en anglais seulement)
The Oak Ridges Moraine (ORM), a prominent sandy ridge on the north shore of Lake Ontario, provides an important water resource in the Greater Toronto Area (GTA). A complex succession of coarse-grained glacial sediments (aquifers) and extensive fine-grained tills (aquitards) has been investigated using GIS technology in conjunction with statistical analysis. A number of geological, hydrological, and topographical features related to the aquifers in the area were identified from diverse datasets including DEM, digital geological map, remote sensed Landsat TM images and a MOEE water well database. Using the flowing wells as training points, the weights of evidence model was applied to describe the spatial pattern of the high yield confined aquifers, and to measure the correlation between the flowing wells and the regional hydrogeological features. Nine binary patterns correlated to the locations of flowing wells were integrated using multivariate logistic regression model and a predictive map was created to illustrate the potential distributions of confined aquifers in the ORM area. (Abstract shortened by UMI.)