Post-Doctoral Researcher In Seismology

2 Aug 2023

Job Information

Organisation/Company

Institut de Physique du Globe de Paris

Department

Seismology

Research Field

Environmental science » Earth science

Physics

Researcher Profile

First Stage Researcher (R1)

Country

France

Application Deadline

31 Oct 2023 - 23:59 (Europe/Paris)

Type of Contract

Temporary

Job Status

Full-time

Hours Per Week

39

Offer Starting Date

1 Nov 2023

Is the job funded through the EU Research Framework Programme?

Not funded by an EU programme

Is the Job related to staff position within a Research Infrastructure?

No

Offer Description

Following the work initiated in 2019 by the French Ministry of Environment (MTECT) to upgrade the probabilistic seismic hazard assessment in the French West Indies, a new seismo-tectonic zoning has been drawn up. In 2022, IPGP published a first instrumental catalog for the Antilles for the period 2014 to 2019 (Saurel et al., 2022), with updates up to 2022 in preparation. However, to be usable for probabilistic hazard studies, the magnitudes in this instrumental catalog need to be homogenized and converted into moment magnitudes.

The aim of this study is to produce an instrumental catalog of moment magnitudes (Mw) by analyzing the waveforms of seismic events listed in the 2014-2022 catalog. To do this, the researcher recruited will use the SourceSpec code (Satriano, 2023), which, by analyzing S and/or P wave spectra, enables the calculation of seismic source parameters such as seismic moment, corner frequency, radiated energy and stress drop.

Earthquakes with a magnitude greater than around 4.5 can also be analyzed using the ISOLA code (Zahradnik and Sokos, 2018), which calculates the complete moment tensor.

By comparing the seismic moment values obtained by these two approaches, we can mutually validate their results.

Analysis of the resulting catalog will enable us to :

- Establish a regression relationship between the magnitudes commonly calculated by observatories in the West Indies (Ml, Md) and the moment magnitude Mw.

- Study the variability of the stress drop as a function of tectonic context: crustal seismicity, subduction interface, deep seismicity.

The results of the work will be presented in a scientific report for MTECT, and will be promoted by one or more scientific articles.

References

Satriano, C. (2022). SourceSpec – Earthquake source parameters from P- or S-wave displacement spectra (v1.7). https: // doi.org/10.5281/ZENODO.3688587

Saurel, J.-M., Bouin, M.-P., Satriano, C., Lemarchand, A., OVSG Team, & OVSM Team. (2022). 2014-2019 Antilles IPGP merged seismic catalog. IPGP Research Collection. https: // doi.org/10.18715/IPGP.2022.L3YLHAAL

Zahradník, J. & Sokos, E. (2018). ISOLA code for multiple-point source modeling –review. in Moment Tensor Solutions - A Useful Tool for Seismotectonics 1–28 (Springer Natural Hazards, 2018). https: // doi.org/10.1007/978-3-319-77359-9

Research activities will take place at the Observatoire volcanologique et sismologique de Martinique (OVSM), after a two-week initial period at the Institut de physique du globe in Paris. Main contacts will be Claudio Satriano (assistant physicist at IPGP), Jordane Corbeau (assistant physicist at OVSM) and Jean-Marie Saurel (research engineer at IPGP).

In addition to research activities, the person recruited will also be involved in day-to-day OVSM tasks, such as daily seismicity monitoring, on-call duty and field missions.

Requirements

Research Field

Physics

Education Level

PhD or equivalent

Skills/Qualifications

Skills

A solid knowledge of seismology of the seismic source is essential.

Programming skills, preferably in Python, are desirable.

A positive aptitude for teamwork and writing scientific reports and articles is required

Specific Requirements

Obligation and risks

The observatory is open Monday to Friday, 8:30am to 6pm.

The person recruited will be assigned to the Martinique Volcanological and Seismological Observatory, where the work is varied and multidisciplinary, both in the laboratory and in the natural environment.

This position requires interpersonal skills adapted to working in a small team, often confronted with crisis situations (earthquake felt, volcanic activity), and in relation with the authorities and the media under the supervision of the observatory manager.

Participation in the life of the observatory will be desirable: routines, voluntary scientific and technical monitoring shared between several team members.

Travel is expected, particularly to the IPGP seismology team in Paris, Guadeloupe and the Caribbean region.

Languages

ENGLISH

Level

Good

Languages

FRENCH

Level

Basic

Research Field

Environmental science » Earth science

Years of Research Experience

None

Research Field

Physics

Years of Research Experience

1 - 4

Internal Application form(s) needed

IPGP-POST DOCT- MTECT-2023.pdf

English

(210.76 KB - PDF)

Download

Additional Information

Benefits

Duration: 12 months

According to experience: salary starting at 3 500 € gross salary (2 800 € net before taxes)

Selection process

How to apply:

Send CV and cover letter to [email protected], [email protected] and [email protected]

Deadlines for applications : 2023 October 1st

Work Location(s)

Number of offers available

1

Company/Institute

institut de physique du globe de Paris

Country

France

State/Province

Martinique island

City

Martinique

Geofield

Where to apply

E-mail

[email protected]

Contact

City

Paris Cedex 05

Website

https:// www. ipgp.fr/fr

Street

1, rue Jussieu

Postal Code

75238

E-Mail

[email protected]

[email protected]

[email protected]

STATUS: EXPIRED