Jehanne Demand Correia

Seismic method applied to landslide study

In mountainous region, landslides represent a major geologic hazard. Each year, landslides cause damages that affect civil engineering structures and have important financial consequences. Thorough understanding of failure type, sliding mechanism and cause of landslides is required to effectively mitigate their impact.

Typically, studies of landslides and slope instabilities make use of geotechnical, hydrological and GIS monitoring techniques. Geophysical surveys can help better understand landslides by providing information about their internal structure and seismic refraction profiling and electrical resistivity surveys have often been implemented. More recently, tests to make use of different geophysical techniques were carried out), but the need remains to find methods that are at the same time efficient and easy to implement in a physical environment that is often difficult.

My PhD project address to the possibility of studying landslides by combining the seismic refraction technique with surface-wave dispersion analysis and seismic reflection technique.

November 2003- Present
PhD student in seismic (supervisor: Professor F.Marillier)
Institute of geophysics, University of Lausanne

2001-2002
Master in Geophysics (DESS Géophysique de surface et de subsurface), Institut de Physique du Globe de Paris (IPGP), Paris, France
Master research project: Perfecting a method of cavity monitoring using surface waves, Laboratoire Central des Ponts et Chaussées (LCPC), Nantes, France

1995-1999
Graduate level in Earth Science, Louis Pasteur University, Strasbourg

Baltazart V., Abraham O., Leparoux D., Côte P., Demand J., Alexandre  J. and Durand O., Utilisation des ondes sismiques de surface pour la détection de cavités souterraines sous voies ferrées, in: Champs physiques et propagation dans les sols et les structures du génie civil, Collection Etudes et recherches des LPC-série Sciences pour le génie civil n° 11, LCPC, 2006

Abstracts

Demand, J., Marillier, F., Landslide investigation by means of different seismic methods, a case study in western Switzerland, EGU General Assembly, Vienna, Austria, 2-7 April 2006.

Denchik, N., Demand, J., Chapellier, D., and Marillier, F., 2006, Combined electrical resistivity tomography and seismic profiling of the morainic cover on the Haute-Mentue catchment monitoring site, EGU General Assembly, Vienna, Austria, 2-7 April 2006.

Demand, J. and Marillier, F., Shallow Surface-Wave Dispersion Applied to the Study of Landslides - an Example in the Jura Mountains, Western Switzerland,Near Surface 2005, 11th European Meeting of environmental and Engineering Geophysics, Palermo Italy ,4-7 September 2005

Demand, J, and Marillier, F. The Ballaigues landslide (Jura Mountains) investigated by means of seismic surface-wave profiling, 3rd Swiss Geoscience Meeting, Zürich, Switzerland, 18-19 November 2005.

Baltazart, V.,.Côte, P., Demand, J., Abraham, O., Alexandre, J. and Durand, O., Analyse des ondes sismiques générées par le passage d'un TGV Application à la détection de cavités souterraines, Journées Sciences de l'ingénieur 2003, Dourdan, France 9-12 Mars 2003

Abraham, O., Leparoux, Pedersen, H., Côte, P., Demand, J. and Baltazart, V., Détection de cavités proches de la sub-surface par analyse spectrale des ondes de, Journées Sciences de l'ingénieur 2003, Dourdan, France 9-12 Mars 2003