Missions

Le réseau de surveillance volcanologique et sismologique de Mayotte (REVOSIMA) est opéré par l'IPGP avec le soutien du BRGM et est sous la responsabilité de l'observatoire volcanologique du Piton de la Fournaise (OVPF-IPGP) et de la direction régionale du BRGM à Mayotte. Les données de ce réseau de surveillance sont produites par un large consortium de partenaires scientifiques français et financé par l'État.

L'équipe est constituée de 15 personnes permanentes.
Le poste est adossé à la fonction de Responsable résident(e) des données marines du REVOSIMA.

Activités

* Description of the activities :
In the context of REVOSIMA, the aim of the position is to further develop and organize the marine part of the monitoring of Mayotte's volcano-tectonic activity, in order to track this activity and understand the relationship between seismicity, tectonic and volcanic structures, deformation processes and fluid migration. As this volcano-tectonic crisis is underwater, the acquisition of geophysical and geochemical data at sea is essential to monitor and understand its activity.

Compétences

* Specific training :
PhD in Earth Sciences or Marine Geosciences

* Computer tools :
• Marine geophysical data processing,
• Processing and analysis of marine geophysical and marine geoscience data.
• Knowledge of marine geosciences and volcanology.
• Interest in marine geophysics and its operational aspects (preparation of campaigns, maintenance of instrumental networks, involvement in the design of new networks).
• Experience of scientific missions at sea and experimental geophysical missions with instrument deployment.
• Software: office automation, python, Matlab, GIS QGIS, Kingdom software, Globe, database.
• Languages: good knowledge of spoken and read English is recommended.

* Professional qualities :
• Be autonomous, rigorous, organized and have good analytical skills.
• Enjoy working in a small team, have good interpersonal skills to interact effectively with fellow engineers and researchers in charge of networks and projects.
• Write mission reports and oceanographic campaign projects for funding.
• Promote research and development work (publications, conference presentations, data distribution with metadata and DOI).
• Ability to supervise trainees

Contexte de travail

The IPGP's Volcanological and Seismological Observatories are part of the INSU's (CNRS) “Service national d'observation en volcanologie”. The missions of the OVS are as follows:

1) Operate the observation/monitoring networks of dangerous active French volcanoes in their regional geodynamic and seismic context;
2) Monitor and detect changes in behavior and activity levels, in order to analyze the criticality of systems and the probability of dangerous phenomena;
3) Transmit scientific alerts on observed phenomena and possible dangerous scenarios to civil protection authorities;
4) Contribute to knowledge leaps through fundamental research on volcanic systems;
5) Regularly disseminate information and knowledge to all stakeholders and the general public, with the aim of raising awareness and preventing risks.

The IPGP's VSOs regularly publish VONA messages as part of the ICAO's volcanic ash warning system, participate in the Caribbean tsunami warning system (UNESCO) and are part of WOVO (World Organisation of Volcano Observatories). They are also responsible for volcano communications in France and for French civil protection.

The staff recruited will be members of IPGP's Marine Geosciences research team and IPGP's OVS. The work will be carried out at the Observatoire Volcanologique du Piton de la Fournaise, in La Réunion, which is an IPGP research and monitoring unit within the OVS. The OVPF is responsible for monitoring the volcanic activity of the Piton de la Fournaise and seismic activity in the area. Since 2020, the OVPF has also been in charge of operational monitoring of Mayotte's volcano-seismological activity as part of REVOSIMA. In addition to this main mission, the OVPF has two other missions: research in the fields of seismology, geophysics and petrology, and the dissemination of knowledge.
IPGP's Marine Geosciences team masters a wide range of techniques, including structural geology, petrology, tectonics, numerical modeling and marine seismology. The team's research activities are based on multidisciplinary data acquired worldwide on board research vessels. These data are then analyzed on land using advanced methods. The team maintains and develops instruments adapted to seabed observations thanks to its marine instrument park, and is involved in the operation of seabed observatories off the Azores and Mayotte. The team works on three main themes: 1) formation of mid-ocean ridges and transform faults, 2) subduction zones, 3) intraplate deformation and volcanism, and 4) observation of active terrestrial processes and oceanic domains via seafloor observatory data.

12-month contract, renewable 1 time.

Contraintes et risques

* Work schedules :
Monday to Friday between 8am and 5pm, total of 38h50 per week

* Work attendance :
The person recruited will take part in REVOSIMA's H24 voluntary on-call duty, which is shared with that of the OVPF, for routine identification of seismicity, monitoring of network status and dispatch of daily activity bulletins (on average one week every 15 weeks).
In the event of an upsurge in volcanic activity in Mayotte, in support of REVOSIMA, participate in the analysis and scientific management of the activity, like the CNAP staff at IPGP.

* Professional trips :
The candidate will be required to carry out oceanographic monitoring and research missions lasting from 1 to 6 weeks in Mayotte in the Indian Ocean, field missions in Mayotte and La Réunion, professional missions to France, in particular Paris for discussions and the annual workshop to present REVOSIMA's activities and results, and even to Europe as part of the EMSO project.