Passionate about climate physics, glaciology and science outreach. Life's a dream, go for it!
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I am passionate about phenomena related to atmospheric physics, polar glaciers and powerful tools to study these physical processes such as numerical modelling and machine learning.
Postdoctoral researcher at the DLR Institute for Atmospheric Physics, Weßling (close to Munich), working on machine learning based automated parameter tuning of global climate models with satellite data, in Prof. Veronika Eyring’s group. This position is funded by the ERC Synergy Grant USMILE.
Octobre 2017 - June 2021
Affiliations : Seismology team of IPGP, Centre des Matériaux of Mines ParisTech, PIMM laboratory in ENSAM.
Evaluating glacier mass loss is a current concern to understand the rapid evolution of ice caps related to climate change. Iceberg calving is responsible for an important part of mass loss occurring at the front of marine-terminating glaciers in Greenland. Some just-calved thin icebergs are unstable : during capsize, a force is applied to the terminus and is transmitted to the solid earth. Therefore, a long-period (20s- 100s) seism is generated and seismic signal can be recorded by local and global stations. The emitted seismicity contains precious information about the source mechanisms involved during the calving process.
A versatile mechanical modelling of iceberg capsize has been developed by A. Sergeant et al. . Seismic signals provides constraints on the model and enables the calculation of the iceberg volume and its source dynamics. This model has been first tested on two particular events at the Helheim glacier, Greenland (25 July 2013 at 03:13 UTC and 31 July 2013 at 19:31 UTC) and the results are consistent with the iceberg volume measured separately using images available for this event. Following the work of Amandine Sergeant, a first objective of this PhD is the development and validation of the mechanical model (1) with the validation of the modelling of interaction between the iceberg and the surrounding ocean and (2) with the extension of the modelling to the whole system which account for frictional force between the glacier and the bedrock. A second objective of the PhD is to constrain the mechanical model with seismic signals from events of the last twenty years to evaluate Greenland glacier’s mass loss by icebergs capsize and calving.
PhD Advisors : Anne Mangeney http://www.ipgp.fr/~mangeney/, Olivier Castelnau https://pimm.artsetmetiers.fr/user/54, Vladislav Yastrebov http://www.yastrebov.fr/.
Numerical stability analysis of a flexible beam in a confined fluid
March - August 2017 | Master year 2
Meudon, France, Onera Aerospace lab, Aerodynamics, Aeroelasticity, Acoustics Department
Analysis of marine vessels stability
April - August 2016 | Gap year
Leiden, Netherlands, Herema Marine Contractor, Marine Engineering Department
Sensitivity analysis on a database of catenary geometry and current quality
October 2015 - March 2016 | Gap year
Paris, France, SNCF Railway company, Direction Innovation Research, Mechanical Systems and Interaction
Experimental study of thermo-acoustic instabilities
May - July 2015 | Master year 1
Bombay, India, Aerospace Engineering Department, India Institute of Technology Bombay
A. Sergeant, A. Mangeney, V. A. Yastrebov, F. Walter, J.-P. Montagner, O. Castelnau, E. Stutzmann, P. Bonnet, V. J.-L. Ralaiarisoa, S. Bevan, A. Luckman, Monitoring Greenland ice-sheet buoyancy-driven calving discharge using glacial earthquakes, Annals of Glaciology, 60(000), 75–95, 2019 https://doi.org/10.1017/aog.2019.7.
P. Bonnet, V.A. Yastrebov, P. Queutey, A. Leroyer, A. Mangeney, O. Castelnau, A. Sergeant, E. Stutzmann, J-P Montagner, Modelling iceberg capsize in the open ocean, GJI, 2020, https://doi.org/10.1093/gji/ggaa353
P. Bonnet, V.A. Yastrebov, A. Mangeney, O. Castelnau, P. Queutey, A. Leroyer, A. Sergeant, E. Stutzmann, J-P Montagner, Modelling the dynamics of iceberg - glacier - bedrock, in preparation
Modelling and Simulation in Structural Mechanics and Coupled Systems
September 2016 - March 2017, with Honours
ENS Paris-Saclay, ENSTA Paris, Centrale Supelec, top 5 French Uni
Applied Mathematics, Fluid and Solid mechanics
September 2013 - March 2017
ENSTA Paris, top 10 French Uni
Intensive Science program, pre-requisite for French Uni
September 2010 - July 2013
Mathematics and Physics (PCSI-PSI*) in Lycée Condorcet, Paris
Major in mathematics and life and earth sciences
Sep. 2007 - June 2010
Lycée Louis le Grand, Paris, Prestigious high school with competitive admission
-Earthquakes dynamics, IPG Paris 2017 -Pedagogical training, IPG Paris 2017 -Ocean, Atmosphere, Climate ENS Paris 2018 -Contact mechanics, Mines Paris 2018 -Time-dependant seismology, TIDES-cost Prague 2018 -Sun, Northern Lights, UNIS Svalbard 2019
UNIS, Svalbard, Norway
5 weeks in February - March 2019
Doctoral course AG-825 in UNIS, Longyearbyen
Lectures: Glaciology, Thermalregimes, Remote sensing, QGIS Tutorial
8 days of field work: GPR, Ice Coring
8 days in May 2018
Doctoral field course, IPGP
Analysis of the Corinth region tectonic activity, lithospheric deformation, and seismic history
10 days in September 2017
MOOSE-GE campaign on IFREMER Atalante ship, LOCEAN
Monitoring the impact of climate change on hydrology and biogeochemical cycles in the northwestern Mediterranean Sea
Material Resistance and Fatigue Failure
January 2018 - March 2019
80 hours of teaching in ENSAM Engineering school, Paris
Theoretical and applied physics
September 2014 - June 2015
44 hours of teaching in intensive science program in Condorcet School, Paris
Mathematics and Physics
October 2013 - June 2014
40 hours of tutoring to high school students in the region of Paris