Stage de géophysique

Stage de géophysique
Diplôme d'ingénieur de l'École et observatoire des sciences de la Terre (EOST)Parcours Diplôme d'ingénieur de l'EOST

ComposanteÉcole et observatoire des sciences de la Terre (EOST)

Description

Le stage en Alsace est consacré à l'étude d'un problème de géophysique appliquée à la subsurface.
A l'aide de diverses méthodes d'investigation, il s'agit de reconnaître la structure et la nature des du sous-sol sur un secteur d’étude en Alsace. L'acquisition des données et la mise en forme des données se font pendant la première semaine suivant la rentrée. Le traitement et l'interprétation des données se font par groupes et se poursuivent pendant le premier semestre. Les résultats font l'objet d'un rapport et d'une présentation notés.
Les méthodes géophysiques concernées sont les plus utilisées dans le domaine de la prospection de proche surface et sont incontournables dans les activités de bureaux d’étude mais aussi pour l’étude des processus géologiques et hydrogéologiques. Elles sont utilisées dans tous les domaines de la recherche en sciences de la Terre à l’échelle du terrain.

Déroulement
L’UE est composée de deux phases : une phase d’acquisition de données sur le terrain début septembre, puis le traitement des données à l’EOST en partie encadrée. Les méthodes concernées sont la prospection sismique active en ondes P et ondes S, tomographie électrique, Electromagnétisme basse fréquence (magnéto-tellurique, CSEM ou VLF), géoradar, prospection magnétique, gravimétriques, sismique passive et topographie/ positionnement.



The field internship in Alsace is dedicated to the study of a geophysical problem applied to the subsurface.
Using various investigation methods, the aim is to identify the structure and nature of the subsurface in a study area in Alsace. The acquisition of data and the pre-processing of the data are done during the first week after the beginning of the school year. Data processing and interpretation are done in groups and continue during the first semester. The results are reported and presented in a graded report.
The geophysical methods conc erned are the most widely used in the field of near-surface prospecting and are essential in the activities of engineering offices but also for the study of geological and hydrogeological processes. They are used in all fields of research in earth sciences at the field level.

Course description
The UE is composed of two phases: a data acquisition phase in the field at the beginning of September, then data processing at EOST with some supervision.
The methods concerned are active seismic prospecting in P-wave and S-wave, electrical tomography, low-frequency electromagnetism (magneto-telluric, CSEM or VLF), georadar, magnetic prospecting, gravimetry, passive seismic and topography/positioning.

 

School regulations

The curriculum includes three years of study: admissions, the organisation of studies, assessments, placements and vivas, graduation and international exchanges are all explained in the current school rules (pdf).

First and second year courses

First and second year courses

  • General modules: mechanics, geology, mathematics, IT, digital analysis, signal processing, inverse methods.
  • Geophysical methods: physics of the Earth, seismology, seismic modelling and imaging, geodesy, gravimetry, potential methods, geomagnetism, electromagnetism, rock physics and fracture, hydrology.
  • Practical work: geophysical measurements in the field (photo) and in the laboratory, geology field placements in the Alps.
  • Languages and economic and social sciences: English, modern language 2, economics, industrial property, management, sustainable development, ethics, quality, company health and safety
  • IT and research projects, shared with the first year of the master’s degree
  • Summer placements at a laboratory or company, with numerous opportunities abroad (international placement contact: Mike Heap)

Third year course

Students have a choice of 3 specialisations in the third year:

  • Geophysics applied to the exploration and production of raw materials: seismic and hydrodynamic characterisation of reservoirs, seismic processing and interpretation, potential methods.
  • Geophysics applied to geotechnics: geotechnics and the resistance of materials applied in civil engineering, geomechanics, hydrogeophysics, electromagnetic methods, earthquake.
  • Hydrogeology, hydrogeochemistry, hydrogeophysics (HydroG3).

Additional teaching:

  • Languages and economic and social sciences: English, energy economy, company strategy and structure.
  • Geophysics field camp in Alsace (photo).  Here are images of a normal fault in the Rhine Graben taken by students.
  • 6-month industry placement culminating in the writing of a dissertation and a viva before a jury in order to obtain the engineering degree. The placements are carried out all over the world.