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PhD project in Earth Sciences (specializing in applied geophysics)

Joint inversion of potential field data

Project description

Recent technological advances suggest that enhanced geothermal systems (EGS) offer a significant potential for ¡®environmentally-friendly¡¯ electricity production.  What is the potential for EGSs for Quebec?  Unfortunately, very limited direct data are available that permit the direct calculation of the heat flow and temperature distribution at depth in Quebec.  The evaluation of the potential for EGS is therefore a difficult task and must thus rely on indirect data.  The research project consists in developing a joint inversion method of potential field data that will allow studying the structure of the Precambrian basement in the Saint-Lawrence Lowlands.  The purpose is to identify, in collaboration with geologists, regions where the temperature at depth could be increased by radiogenic sources.  Density and susceptibility models will be obtained using the developed method.  To reduce surface focalisation effects inherent to potential field methods, in approach in the wavelet domain will be investigated.  Wavelet decomposition allows tackling first the deeper structures and subsequently progress toward the surface.  Magnetic and gravity data will be inverted jointly to increase the resolution.


Supervisors: Erwan Gloaguen, Bernard Giroux

Degree level: PhD in Earth Sciences

Scholarship & project funding:
INRS provides financial support to all its students. The PhD project will be funded through an NSERC grant in partnership with Hydro Quebec.

Desired qualifications

The candidate should possess a MSc degree in geophysics, engineering geology, or physics and have a solid background in mathematics and be interested in geophysical inversion.


²»ºÃÒâ˼ Õâ´Î¼ÓÉϵ¼Ê¦Ö÷Ò³ºÍѧУÖ÷Ò³
Supervisor Professeur Lyal Harris http://www.inrs.ca/lyal-harris#ENGLISH
INRS Canada (Qu¨¦bec)http://www.inrs.ca/universite/inrs-bref

[ Last edited by yueelan on 2014-6-9 at 09:35 ]
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