Simultaneous estimation of transmissivity (or conductivity), storage coefficient (or porosity) and effective recharge, in a stochastic framework

• Type: Article in International Conference Proceedings Book
• Date: 1999

Authors

Manuel Maria Pacheco Figueiredo (Author) FEUP; Luís Ribeiro (Author) Other; José Manuel Pinto Ferreira Lemos (Author) FEUP

Conference proceedings International

Title: Proceedings of the ModelCARE'99: Calibration and Reliability in Groundwater Modelling - Coping with Uncertainty

Pages: 124-130

ModelCARE'99: Calibration and Reliability in Groundwater Modelling - Coping with Uncertainty

Other information

Abstract (EN): Solving differential equations, which rule transient groundwater flow in confined or unconfined porous aquifers, implies the previous knowledge of hydrogeological parameters and effective recharge. In a stochastic framework, the hydrogeological parameters are seen as random functions and their log-transforms can be represented by stationary isotropic multivariate normal random functions characterized by a small number of parameters. Recharge from rainfall can be assessed as a percentage of total precipitation. An algorithm, based on an inverse method approach, which simultaneously estimates all these parameters is described. This algorithm is complemented by a co-kriging technique which produces the first and second conditional moments of those hydrogeological parameters. A short description, as well as an application of this methodology to a synthetic case, is presented, including comparisons between

Language: Portuguese

Type (Professor's evaluation): Scientific

No. of pages: 7