PHD PROPOSAL FOR THE DOCTORAL SCHOOL - " ECOLOGIE, GÉOSCIENCES, AGRONOMIE, ALIMENTATION " - THÈSES ...
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PhD PROPOSAL FOR THE DOCTORAL SCHOOL
« Ecologie, Géosciences, Agronomie, ALimentation »
GENERAL INFORMATION
Thesis title: Caracterisation of the seismicity of stable continental region (focus on the
Armorican massif)
Acronym: armorseis
Disciplinary field 1: Geosciences
Disciplinary field 2: Select an element
Three keywords: Seismology, signal processing, statistics
Research unit : Laboratoire de planétologie et de géodynamique UMR CNRS 6112
Name of the thesis director: Éric Beucler
Email address of the thesis director : eric.beucler@univ-nantes.fr
Name of the thesis co-supervisor 1 (if applicable): Mickaël Bonnin
Email address of the thesis co-supervisor 1 (if applicable): mickael.bonnin@univ-nantes.fr
Name of the thesis co-supervisor 2 (if applicable):
Email address of the thesis co-supervisor 2 (if applicable):
Thesis grant (funding origin and amount): University of Nantes (3 year contract)
Contact(s) (mailing address and E-mail): Laboratoire de planétologie et de géodynamique
Université de Nantes
2 rue de la Houssinière, BP 92208 44322
Nantes Cedex 3
Recruitment process: Recruitment process depends on thesis funding. To select the corresponding
recruitment process, please visit the EGAAL website here. This information is needed for proposal publication.
☑ Doctoral school contest ☐ Interview ☐ Other (indicate) :
All sections must be filled. Once filled, please save the proposal form in pdf format using
the following naming: Supervisor Name_Unit_Subject Acronym_EN.pdf
ED EGAAL
Direction : 65 rue de Saint-Brieuc – CS 84215 – 35042 Rennes Cedex – France
Tél : 02 23 48 52 75
Mail : ed-EGAAL@u-bretagneloire.fr
Site Web : https://ed-egaal.u-bretagneloire.frSCIENTIFIC DESCRIPTION OF THE PhD PROJECT
Socio-economic and scientific context : (10 lines)
The NW part of the metropolitan France benefits for 10 years from an unprecedented local and national effort,
which will lead, in 2021, to the completion of the deployment of 26 permanent seismometers, compared to the 5
stations that existed until 2017. About twenty seismometers are running continuously, for more than a year and a
half, which already offers a quantity of data, unprecedented both in terms of quantity and quality for the Brittany
region, available at the laboratory. The coverage provided by this new seismological antenna is unique for this part
of the France, seen as a stable intracontinental region with moderate seismicity, but also for other similar regions in
the world. This PhD thess proposes to take advantage of these new data and the RESIF research infrastructure to set
up the tools for fine detection of small seismic events (Ml < 2.0). The detection of these events, coupled with a
precise localization, by Bayesian approach, will allow the implementation of a regional seismic event bulletin. This
will contribute to a better understanding of seismicity in this region.
Assumptions and questions (8 lines)
The study of the natural seismicity of a stable continental region is a far from negligible issue in the understanding
of the phenomena that lead to earthquakes. In active regions, the seismicity, in good agreement with the
displacements observed at the surface by GPS arrays, is controlled at first order by tectonics. Far from the
tectonically active areas, one can therefore ask what is (or what are) the cause(s) of seismicity among the various
possible candidates which are: erosion, post-glacial rebound, solid and liquid tides, structural heritage or
anthropogenic activities. Beyond the highlighting of possible phenomena usually masked by tectonics, this question
will inevitably have a consequence on the notion of seismic cycle, hazard and thus seismic risk in regions with low
seismic activity.
The main steps of the thesis and scientific procedure (10-12 lines)
1. Bibliographical analysis of continuous signal detection and analysis methods, intercorrelation and spectral
analysis methods, learning about international standards in seismology and the tools available today,
2. development of an algorithm for automatic detection of low amplitude seismic signals (pattern search
from a reference event data set, machine learning, multivariate statistics),
3. scenario development on synthetic data and applications to real data on the scale of a regional/national
network such as the permanent antenna in the NW part of France or a local network installed during a
post-earthquake campaign (e.g. Cholet earthquake, 21 June 2019),
4. practical implementation for the study of the seismicity of the Armorican massif and openness to the
problem of detecting Martian earthquakes thanks to the analysis of data from the SEIS seismometer
(NASA InSight mission).
Methodological and technical approaches considered (4-6 lines)
Processing of the continuous seismic signal,
search for pattern or redundancy as a new detection criterion,
use of machine learning or deep learning tools, creation of test cases and learning data sets,
multivariate statistical analysis, search for covariance.
Scientific and technical skills required by the candidate
Programming languages suitable for seismic signal processing and analysis of large data sets: Python
(including ObsPy), ForTran, shell (Linux)
advanced knowledge in signal processing and seismology
basic knowledge of statistical tools (eg. supra).THESIS SUPERVISION1
Unit name: Team name:
Laboratoire de planétologie et de géodynamique –
Thème Planète Terre
UMR CNRS-6112
Unit director name: Team director name:
Antoine Mocquet Éric Beucler / Olivier Bourgeois
Mailing address of the unit director: Mailing address of the team director:
antoine.mocquet@univ-nantes.fr eric.beucler@univ-nantes.fr
Thesis director
Surname, first name: Beucler Éric
Position: University Professor
Obtained date of the HDR (Habilitation thesis to supervise research): May, 23 2018
Employer: University of Nantes
Doctoral school affiliation: EGAAL
Rate of thesis supervision in the present project (%): 50
Total rate of thesis supervision in ongoing theses (supervisions and co-supervisions) (%): 0
Number of current thesis supervisions/co-supervisions: 0
Thesis co-supervisor 1 (if applicable)
Surname, first name: Bonnin Mickaël
Position: Adjoint-Physicist (researcher)
Habilitation thesis to supervise research ☐ yes ☑ no If yes, date diploma received:
Employer: University of Nantes
Doctoral school affiliation: EGAAL
Rate of thesis supervision in the present project (%): 50
Total rate of thesis supervision in ongoing theses (supervisions and co-supervisions) (%): 0
Number of current thesis supervisions/co-supervisions: 0
Thesis co-supervisor 2 (if applicable)
Surname, first name:
Position:
Habilitation thesis to supervise research ☐ yes ☐ no If yes, date diploma received:
1
In EGAAL Doctoral School, if only one scientist in thesis supervision = 100% of supervision rate; if 2 people
involved in thesis supervision = from 50% to 70% of supervision rate for the director; if 3 people involved in thesis
supervision = 40% / 30% / 30% of supervision rate distribution among supervisors.Employer:
Doctoral school affiliation:
Rate of thesis supervision in the present project (%):
Total rate of thesis supervision in ongoing theses (supervisions and co-supervisions) (%):
Number of current thesis supervisions/co-supervisions:
Private partner (if CIFRE funding, private funding,…)
Surname, first name:
Position:
Employer:
Rate of thesis supervision in the present project (%):
Total rate of thesis supervision in ongoing theses (supervisions and co-supervisions) (%):
Number of current thesis supervisions/co-supervisions:
International partner (if Cotutelle thesis)
Surname, first name:
Position:
Employer:
Rate of thesis supervision in the present project (%):
Total rate of thesis supervision in ongoing theses (supervisions and co-supervisions) (%):
Number of current thesis supervisions/co-supervisions:
Professional status of previous PhD students supervised by both director and co-supervisors
(from 5 years)
Please provide the following information for each PhD students supervised
Surname, first name: Gaudot Ianis
Date of PhD beginning and PhD defence: 01/2013 - 01/2016
Thesis supervision: Antoine Mocquet / Éric Beucler / Mathieu Le Feuvre
Professional status and location: Ingénieur géophysicien (BRGM)
Contract profile (post-doc, fixed-term, permanent): CDI
List of publications from the thesis work:
1. Gaudot, I., É. Beucler, A. Mocquet, M. Schimmel & M. Le Feuvre (2016). “Statistical
redundancy of instantaneous phases : theory and application to the seismic ambient
wavefield”,. Geophys. J. Int. 204(2), 1159–1163.
2. Bonnin, M. Chevrot, S., Gaudot, l. and M. Haugmard (2017). Upper mantle deformation
beneath the Pyrenean domain inferred from SKS splitting in northern Spain and
Southern France. Geophys. J. Int., 210:2, pages 898-910.Surname, first name: Méric Haugmard
Date of PhD beginning and PhD defence: 09/2013 - 10/2016
Thesis supervision: Antoine Mocquet / Éric Beucler
Professional status and location: Artisan
Contract profile (post-doc, fixed-term, permanent): CDI
List of publications from the thesis work:
1. M. Cara, Y. Cansi, A. Schlupp, P. Arroucau, N. Béthoux, É. Beucler, S. Bruno, M. Calvet,
S. Chevrot, A. Deboissy, B. Delouis, M. Denieul, A. Deschamps, C. Doubre, J. Fréchet, S.
Godey, O. Golle, M. Grunberg, J. Guilbert, M. Haugmard, L. Jenatton, S. Lambotte, D.
Leobal, C. Maron, V. Mendel, S. Merrer, M. Macquet, A. Mignan, A. Mocquet, M.
Nicolas, J. Perrot, B. Potin, O. Sanchez, J.-P. Santoire, O. Sèbe, M. Sylvander, F.
Thouvenot, J. Van Der Woerd and K. Van Der Woerd (2015), “SI-Hex : a new catalogue
of instrumental seismicity for metropolitan France”, Bull. Soc. Géol. France, vol. 186,
no. 1, pp. 3–19.
2. Bonnin, M. Chevrot, S., Gaudot, l. and M. Haugmard (2017). Upper mantle deformation
beneath the Pyrenean domain inferred from SKS splitting in northern Spain and
Southern France. Geophys. J. Int., 210:2, pages 898-910
Five main recent publications of the supervisors on thesis subject:
Beucler, É., A. Mocquet, M. Schimmel, S. Chevrot, O. Quillard, J. Vergne & M. Sylvander
(2015). Observation of deep water microseisms in the North Atlantic Ocean using tide
modulations. Geophys. Res. Lett. 2014GL062347
Panning, M. P., É. Beucler, M. Drilleau, A. Mocquet, P. Lognonné & W. B. Banerdt
(2015). Verifying single-station seismic approaches using Earth-based data : Preparation
for data return from the InSight mission to Mars. Icarus 248(0), 230 – 242
Gaudot, I., É. Beucler, A. Mocquet, M. Schimmel & M. Le Feuvre (2016). “Statistical
redundancy of instantaneous phases : theory and application to the seismic ambient
wavefield”,. Geophys. J. Int. 204(2), 1159–1163.
Bonnin, M., Chevrot, S., Gaudot, l. and M. Haugmard (2017). Upper-mantle
deformation beneath the Pyrenean domain inferred from SKS splitting in northern
Spain and southern France. Geophys. J. Int., 210:2, pages 898-91.
Maguire, R. Ritsema, J., Bonnin, M., van Keken, P. E., and G. Saskia, 2018. Evaluating
the resolution of deep mantle plumes in teleseismic traveltime tomography. J.
Geophys. Res., 123.
Giardini, D., P. Lognonné, W. B. Banerdt, W. T. Pike, U. Christensen, S. Ceylan, J. F.
Clinton, M. van Driel, S. C. Stähler, M. Böse, R. F. Garcia, A. Khan, M. Panning, C. Perrin,
D. Banfield, É. Beucler, C. Charalambous, F. Euchner, A. Horleston, A. Jacob, T.
Kawamura, S. Kedar, G. Mainsant, J.-R. Scholz, S. E. Smrekar, A. Spiga, C. Agard, D.
Antonangeli, S. Barkaoui, E. Barrett, P. Combes, V. Conejero, I. Daubar, M. Drilleau, C.
Ferrier, T. Gabsi, T. Gudkova, K. Hurst, F. Karakostas, S. King, M. Knapmeyer, B.
Knapmeyer-Endrun, R. Llorca-Cejudo, A. Lucas, L. Luno, L. Margerin, J. B. McClean, D.Mimoun, N. Murdoch, F. Nimmo, M. Nonon, C. Pardo, A. Rivoldini, J. A. R. Manfredi, H.
Samuel, M. Schimmel, A. E. Stott, E. Stutzmann, N. Teanby, T. Warren, R. C. Weber, M.
Wieczorek & C. Yana (2020). “The seismicity of Mars”. Nature Geoscience 13(3), 205–
212.
Lognonné, P., W. B. Banerdt, W. T. Pike, D. Giardini, U. Christensen, R. F. Garcia, T.
Kawamura, S. Kedar, B. Knapmeyer-Endrun, L. Margerin, F. Nimmo, M. Panning, B.
Tauzin, J.-R. Scholz, D. Antonangeli, S. Barkaoui, É. Beucler, F. Bissig, N. Brinkman, M.
Calvet, S. Ceylan, C. Charalambous, P. Davis, M. van Driel, M. Drilleau, L. Fayon, R. Joshi,
B. Kenda, A. Khan, M. Knapmeyer, V. Lekic, J. McClean, D. Mimoun, N. Murdoch, L. Pan,
C. Perrin, B. Pinot, L. Pou, S. Menina, S. Rodriguez, C. Schmelzbach, N. Schmerr, D.
Sollberger, A. Spiga, S. Stähler, A. Stott, E. Stutzmann, S. Tharimena, R. Widmer-
Schnidrig, F. Andersson, V. Ansan, C. Beghein, M. Böse, E. Bozdag, J. Clinton, I. Daubar,
P. Delage, N. Fuji, M. Golombek, M. Grott, A. Horleston, K. Hurst, J. Irving, A. Jacob, J.
Knollenberg, S. Krasner, C. Krause, R. Lorenz, C. Michaut, R. Myhill, T. Nissen-Meyer, J.
ten Pierick, A.-C. Plesa, C. Quantin-Nataf, J. Robertsson, L. Rochas, M. Schimmel, S.
Smrekar, T. Spohn, N. Teanby, J. Tromp, J. Vallade, N. Verdier, C. Vrettos, R. Weber, D.
Banfield, E. Barrett, M. Bierwirth, S. Calcutt, N. Compaire, C. L. Johnson, D. Mance, F.
Euchner, L. Kerjean, G. Mainsant, A. Mocquet, J. A. Rodriguez Manfredi, G. Pont, P.
Laudet, T. Nebut, S. de Raucourt, O. Robert, C. T. Russell, A. Sylvestre-Baron, S. Tillier, T.
Warren, M. Wieczorek, C. Yana & P. Zweifel (2020). “Constraints on the shallow elastic
and anelastic structure of Mars from InSight seismic data”. Nature Geoscience 13(3),
213–220.
THESIS FUNDING
Origin(s) of the thesis funding: Doctoral contract University of Nantes
Gross monthly salary: Depends on the official contract
Thesis funding state : Non acquired
Funding beginning date/Funding ending date: 09/2020 - 08/2023Date: April 12th, 2020 Name, signature of unit director: Antoine Mocquet Name, signature of team director: Éric Beucler Name, signature of thesis project director: Éric Beucler
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