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Alexandrine Gesret

Lecturer

Center · GEOSCIENCES

Keywords

Team

GEOPHY - Géophysique

Biography

Alexandrine Gesret is a researcher specializing in geophysics and the modeling of seismic and hydrogeological risks. Her work focuses on analyzing geological and topographical site effects, as well as on developing innovative methods for characterizing and monitoring subsurface conditions, particularly in urban and seismically active settings. Her expertise includes the use of advanced geophysical techniques, such as surface wave analysis (MASW, HVSR), and the integration of artificial intelligence for seismic data inversion and the prediction of groundwater dynamics. She has also contributed to the improvement of Bayesian methods and global optimization algorithms, such as Markov Chain Monte Carlo (MCMC) and particle swarms, to solve complex inverse problems in seismic imaging and hydrogeology. Her research aims to better understand the interactions between geological structures, fluids, and natural hazards, while proposing practical solutions to enhance the resilience of infrastructure and regions.

Publication(s)

Teaching

Geoscience and the Anthropocene (GA)

Lecturer

The “Geosciences and the Anthropocene” GA course takes place at several sites impacted by human activity, specifically chosen to deepen students’ understanding of the challenges related to climate change and the energy transition. This course is organized as a one-week intensive off-campus session. For logistical reasons related to the large number of students, the class is divided into six groups working independently under the guidance of a multidisciplinary teaching team. The six groups will be based in the following areas: Paris and Morvan (Île-de-France) Digne-les-Bains and surrounding area (Alpes-de-Haute-Provence) Laragne and surrounding area (Hautes-Alpes) Romanche and Drac Valleys (Isère and Hautes-Alpes) Western Pyrenees (French and Spanish) Roya Valley (Alpes-Maritimes) For each group, the teaching team consists of 2 to 3 faculty members, each of whom will supervise a group of 8 students. Within these small groups, instruction will alternate between observation sessions of natural objects, independent work sessions in which students are invited to observe and analyze the geological terrain relevant to the instruction they have received, tutorials, and visits to key sites or engineering structures. Over the course of the week, each team will present the results of their workshops to all the students in their group.

VS Geology Internship

Lecturer

Subsurface Geophysics (Internship)

Guest Lecturer

The course will take place off-campus for one week, primarily in the field (in the Fontainebleau Forest, south of Paris), followed by classroom sessions in the afternoon. Introductory lectures: fundamental concepts, survey methods, case studies (magnetic, electrical, electromagnetic, and seismic methods); Fieldwork: acquisition of various types of geophysical data, geological observations. Lab sessions: preparation of data acquisitions, processing, and interpretation; Experimental work and data processing will be conducted in small groups. Students will be expected to take the initiative both in the field and when synthesizing results.

Geosciences (GEOSCIENCES) track

Guest Lecturer

The program is organized into two main periods at the École des Mines: one month in September/October and 15 days in January, as well as an internship period that takes place either at a company or in a research laboratory. The geosciences track is directly linked to the research conducted at the Geosciences Center and involves numerous faculty members from that center, who provide students with the necessary knowledge to engage effectively in meetings and visits with professionals. The two periods—in the fall and in January—consist of lectures, field trips, and mini-projects on the one hand, and site visits and meetings with professionals on the other. The table below outlines the topics covered and the teaching methods. Topic Lectures and Mini-Projects Site Visits, Meetings with Professionals Risk Assessment and Uncertainty Management Risks Associated with Soil Pollution Geostatistical Tools BRGM - Landslide risks Monitoring / characterization Sampling in natural environments Geophysical tools Georeferencing Hydrogeological monitoring Fiber optics Invisensing - Fiber optics research Eau de Paris / SAUR Storengy - Research Center Spotlight – “Continuous Monitoring” Startup Understanding Natural Phenomena and Human Interactions Behavior of Pollutants in Natural Environments Geochemistry Hydrogeochemistry Seismic Imaging Volcanic systems Andra - Underground laboratory for studying nuclear waste storage CGG - Research and data processing center GISFI - Experimental site on a brownfield site Storengy - Research center Resource and waste management Geothermal potential Induced seismicity Hydrogeology in fractured environments Eau de Paris / SAUR Storengy - Underground gas storage site Fonroche - Deep geothermal power plant Ileva - Waste treatment and recovery center EDF - Sainte Rose Hydroelectric Power Plant TOTAL Group CIGEO Project Prevention, Management, and Remediation Participatory Initiatives Artelia New Coastal Road Construction Project in Saint Denis, Réunion EVOLEN Symposium What do young graduates go on to do? Some continue their education by pursuing a Ph.D. in geosciences, through industrial collaborations or academic theses: Stanford, ENS, CNRS, CEA, IPGP, MINES Paris Some pursue further training Petroleum Engineering at Texas A&M / IFP School / Corps des Mines Some enter the industrial sector, consulting, or public administration: Technic-Atome, EDF, TOTAL, NAVAL, AIR LIQUIDE, SUEZ ARTELIA, MAZAR, AGENCE FRANCAISE DE DEVELOPPEMENT, DRIEE

PhD supervision

  • 2024 Water resources forecasting in the critical zone of the Orgeval basin (Paris, France) based on hydrogeophysical methods RADIC Nicolas
  • 2022 Contributions to reduced basis methods for nonparametric Bayesian inference in geosciences POLETTE Nadège
  • 2022 Crustal structure beneath Lebanon from receiver function analysis JANBEIN Ali
  • 2021 Probabilistic hydrogeophysics for better integration of geophysical data and hydrogeological models SANCHEZ GONZALEZ Ramon
  • 2020 Uncertainty consideration in seismic data processing for reservoir characterization. GUISTEL Warren
  • 2018 Seismic characterization and site effects evaluation for the Byblos site in Lebanon ABOU JAOUDE Rita
  • 2017 3D Stochastic Tomography of Local Earthquakes JABRANE Ahmed
  • 2015 Stochastic evolutionary numerical optimization: application to inverse problems in seismic tomography LUU Keurfon