Jean-Marc Ballard
Institut national de la recherche scientifique
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Featured researches published by Jean-Marc Ballard.
Environmental Earth Sciences | 2014
Daniel Paradis; Laurie Tremblay; René Lefebvre; Erwan Gloaguen; Alfonso Rivera; Michel Parent; Jean-Marc Ballard; Yves Michaud; Patrick Brunet
Providing a sound basis for aquifer management or remediation requires that hydrogeological investigations carried out to understand groundwater flow and contaminant transport be based on representative data that capture the heterogeneous spatial distribution of aquifer hydraulic properties. This paper describes a general workflow allowing the characterization of the heterogeneity of the hydraulic properties of granular aquifers at an intermediate scale of a few km2. The workflow involves characterization and data integration steps that were applied on a 12-km2 study area encompassing a decommissioned landfill emitting a leachate plume and its main surface water receptors. The sediments composing the aquifer were deposited in a littoral–sublittoral environment and show evidence of small-scale transitional heterogeneities. Cone penetrometer tests (CPT) combined with soil moisture and electrical resistivity (SMR) measurements were thus used to identify and characterize spatial heterogeneities in hydraulic properties over the study area. Site-specific statistical relationships were needed to infer hydrofacies units and to estimate hydraulic properties from high-resolution CPT/SMR soundings distributed all over the study area. A learning machine approach was used due to the complex statistical relationships between colocated hydraulic and CPT/SMR data covering the full range of aquifer materials. Application of this workflow allowed the identification of hydrofacies units and the estimation of horizontal hydraulic conductivity, vertical hydraulic conductivity and porosity over the study area. The paper describes and discusses data acquisition and integration methodologies that can be adapted to different field situations, while making the aquifer characterization process more time-efficient and less labor-intensive.
Hydrogeology Journal | 2010
Samantha Murphy; Thomas Ouellon; Jean-Marc Ballard; René Lefebvre; Ian D. Clark
Earth System Dynamics Discussions | 2016
Daniel Paradis; Harold Vigneault; René Lefebvre; Martine M. Savard; Jean-Marc Ballard; Budong Qian
Journal of Applied Geophysics | 2012
Erwan Gloaguen; René Lefebvre; Jean-Marc Ballard; Daniel Paradis; Laurie Tremblay; Yves Michaud
Archive | 2013
Marc-André Carrier; René Lefebvre; Christine Rivard; Michel Parent; Jean-Marc Ballard; Nicolas Benoît; Harold Vigneault; Châtelaine Beaudry; Xavier Malet; Marc Laurencelle; Jean-Sébastien Gosselin; Pierre Ladevèze; Rachel Thériault; Isabelle Beaudin; Aubert Michaud; André Pugin; Roger H. Morin; Heather Crow; Erwan Gloaguen; Joshua Bleser; Alex Martin; Denis Lavoie
Hydrogeology Journal | 2018
Daniel Paradis; Jean-Marc Ballard; René Lefebvre; Martine M. Savard
Archive | 2015
René Lefebvre; Jean-Marc Ballard; Marc-André Carrier; Harold Vigneault; Châtelaine Beaudry; Laureline Berthot; Guillaume Légaré-Couture; Michel Parent; Marc Laurencelle; Xavier Malet; Annie Therrien; Aubert Michaud; Jessica Desjardins; Ariane Drouin; Marie-Hélène Cloutier; Julie Grenier; Marc-André Bourgault; Marie Larocque; Stéphanie Pellerin; Marie-Hélène Graveline; Debora Janos; John Molson
Archive | 2015
René Lefebvre; Jean-Marc Ballard; Marc-André Carrier; Harold Vigneault; Châtelaine Beaudry; Guillaume Légaré-Couture; Michel Parent; Marc Laurencelle
Archive | 2014
Marc-André Carrier; Annie Therrien; Xavier Malet; Jean-Marc Ballard; Laureline Berthot; René Lefebvre; Michel Parent
Archive | 2013
Marc-André Carrier; René Lefebvre; Christine Rivard; Michel Parent; Jean-Marc Ballard; Nicolas Benoît; Harold Vigneault; Châtelaine Beaudry; Xavier Malet; Marc Laurencelle; Jean-Sébastien Gosselin; Pierre Ladevèze; Rachel Thériault; Isabelle Beaudin; Aubert Michaud; André Pugin; Roger H. Morin; Heather Crow; Erwan Gloaguen; Joshua Bleser; Alex Martin; Denis Lavoie