24-032 Inventory of Extreme Rock-ice Avalanches in
il y a 1 semaine
Doctorat, 36 mois
- Temps plein
- Aucune expérience exigée
- Maitrise, IEP, IUP, Bac+4
- Internal geophysics, geodynamics and geodesy
**Mission**:
The Cordillera Blanca, located between latitudes 8-10°S in Peru, is the most glaciated intertropical mountain range in the world (Masiokas et al., 2020), with numerous peaks above 6000m still holding several hundred glaciers. Particularly affected by current global warming, the area of those glaciers decreased by ~25% between 1962 and 2016 (Concha et al., 2019). This retreat of the cryosphere combined with permafrost degradation strongly increase the rate of natural hazards such as ice falls, glacial lake outburst flood (GLOFS), rock avalanches (e.g., Huggel et al., 2020) which generally occur in the highest reliefs, but often reach towns and villages in the lower valleys (rio Santa, Callejon de Huyalas, ~300,000 inhabitants). These hazards have been responsible for tens of thousands of casualties in this region since the 1950s (Carey, 2014), including some of the deadliest natural disasters of the last century: rock/ice avalanches initiated on the northern summit of Huascaran (6,768 m) carried several tens of millions of m3 of material and spread for tens of kilometers downstream, destroying many villages (Ranrahirca - 1962, Yungay - 1970, ~7,000 casualties for both events; Evans et al., 2009).
In this context, the aim of this project is to produce a "spatio-temporal" inventory of large (> Mm^3) rock-avalanches within the Cordillera Blanca to better assess their spatial distribution, to document their frequency of occurrence and magnitude, and to identify the periods and/or mechanisms favoring their triggering. Particular attention will be paid to the possible link between ancient avalanches and past climatic oscillations identified from over the last hundred thousand years (Concha et al., 2023). This work will be facilitated by the absence of glacial cover in the debris accumulation zones, favoring the preservation of gravitational morphologies over the long term and their detection through digital elevation model (DEM) analysis. Two sites have already been identified at the bottom of the Huascaran and Huandoy nevados (Yungay and Caraz: the sites of historic disasters), where the progressive accumulation of successive avalanche debris has produced debris cones extending over several tens of km². Preliminary field observations there led to the identification of numerous (multi-decametric) boulders that bear witness of events of greater magnitude/volume than historical avalanches.
An innovative and multi-disciplinary approach combining fieldwork, remote sensing, geochronology, and numerical modeling will be undertaken to characterize and to age these deposits. Several geochronological approaches (cosmogenic nuclides, OSL, 14C) will be combined with quantitative geomorphological analysis to characterize and age these deposits. High-resolution DEMs generated from SPOT and Pleiades satellite images will play a crucial role for this research. Indeed, the identification and mapping of rock-avalanche deposits will constitute the primary set of constrain for this PhD project. Additionally, we will compare recent satellite acquisitions with older satellite imagery (e.g.,, Fekete, 2020) to assess volume differences among different events that have occurred over the past few decades.
The expected geomorphological archives reconstructed over longer period (10^3 to 10^5 years) will be compared with paleoclimatic reconstructions that are already well documented in the area for these periods (e.g., Thompson et al., 1995). Thus, it will be possible to identify the timing of occurrence of extreme avalanches and their potential link with past cryosphere fluctuations.
A major expected outcome is to understand the evolution of the Cordillera Blanca environment in the current context of glacial retreat and to characterize the triggering modes of low-frequency events (recurrence greater than 10^2 years) which is essential in the context of risk management for local populations. This study will document the characteristics of these rock-ice avalanches (thickness, volume, run-out/-up), which are key parameters for numerical modeling. Understanding the origin, mechanisms, and frequency of occurrence of these rock-ice avalanches in the Cordillera Blanca represents a real challenge for our Peruvian partners in charge of natural risk management in these densely populated valleys.
his PhD project will serve as a new basis of expertise for replication in other Peruvian cordilleras. The project is therefore strongly supported by our Peruvian partners (INGEMMET/INAIGEM), who will provide all the technical and material resources required for its completion, including 4x4 vehicles, mission funding, drone equipment and co-funding via Peruvian research-calls. This project is already co-funded (PhD 1/2-funding) by the PEPR IRIMA (priority exploratory research program and equipment for int
-
Nouvelles Architectures de Photodiodes à Avalanche
Il y a 2 mois
Lyon, France INL - INSA Lyon Temps plein**Nouvelles architectures de photodiodes à avalanche à photon unique (SPAD) compatibles silicium pour le proche infrarouge**: - Réf - **ABG-111901** - Sujet de Thèse- 09/03/2023- Contrat doctoral- INL - INSA Lyon- Lieu de travail- Lyon - Auvergne-Rhône-Alpes - France- Intitulé du sujet- Nouvelles architectures de photodiodes à avalanche à photon...
-
Environmental Seismology: Acoustic and Seismic of
Il y a 2 mois
Lyon, France Université Grenoble Alpes Temps pleinRéférence de l'offre : SB-121222-ENvSeisISTerre Date limite de réponse : 15 janvier 2023 - Date prévisionnelle de l'entretien : Fevrier 2023 - Type de recrutement: Poste ouvert en CDD - Quotité de travail: 100% - Niveau d'emploi: A - Durée du contrat: Du 01 mars 2023 au 28 février 2026 - Localisation: ISTerre OSUG C 1381 Rue de la piscine 38610...
-
Commis de Cuisine
Il y a 2 mois
Lyon, France Hard Rock Cafe Lyon Temps pleinEt si tu tentais l’expérience d’une aventure incroyablement **ROCK** ? Le Hard Rock Café Lyon est à la recherche de son nouveau commis de cuisine ! Situé en plein cœur de la Presqu'Ile, le Hard Rock Café, mondialement connu pour son ambiance rock inimitable régale ses clients de ses burgers légendaires. Détenteur du titre de "Meilleur burger...
-
Commis Salle
Il y a 2 mois
Lyon, France RESTAURANT HARD ROCK CAFE Temps pleinEt si tu tentais l’expérience d’une aventure incroyablement **ROCK** ? Le Hard Rock Café Lyon est à la recherche de son nouveau Serveur/Hôte d'accueil ! Situé en plein cœur de la Presqu'Ile, le Hard Rock Café, mondialement connu pour son ambiance rock inimitable régale ses clients de ses burgers légendaires. Détenteur du titre de "Meilleur...
-
Commis Salle
il y a 2 semaines
Lyon, France RESTAURANT HARD ROCK CAFE Temps pleinEt si tu tentais l’expérience d’une aventure incroyablement **ROCK** ? Le Hard Rock Café Lyon est à la recherche de son nouveau Serveur/Hôte d'accueil ! Situé en plein cœur de la Presqu'Ile, le Hard Rock Café, mondialement connu pour son ambiance rock inimitable régale ses clients de ses burgers légendaires. Détenteur du titre de "Meilleur...
-
Carhartt Wip Store Lyon
il y a 3 semaines
Lyon, France Carhartt Work in Progress Temps plein-Carhartt WIP is part of the Work In Progress Holding AG. Our family-owned business group started as a licensee and European distributor of the US workwear manufacturer Carhartt in the early 1990s. Since then, it develops its own collections based on workwear originals. Carhartt Work In Progress aims to continuously progress and evolve, without ever losing...
-
Inventory Manager
il y a 7 jours
Lyon, Auvergne-Rhône-Alpes, France bioMérieux sa Temps pleinEntreprise familiale, bioMérieux est un acteur mondial dans le domaine du diagnostic in vitro. Depuis 60 ans, partout dans le monde, nous concevons et développons des solutions diagnostiques innovantes pour améliorer la santé des patients et des consommateurs. Aujourd'hui, nos équipes sont présentes dans 45 pays et servent 160 pays grâce à un large...
-
Plongeur en Restauration
Il y a 2 mois
Lyon 2e, France Hard Rock Cafe Lyon Temps pleinLe Hard Rock Cafe Lyon recrute un(e) plongeur(se) pour son restaurant ! Rejoignez notre équipe et travaillez dans une atmosphère absolument Rock unique à Lyon. **Poste**: - CDI - Horaires en coupure et en continu - 39h/hebdomadaire **Tâches principales** - Assurer le nettoyage de la vaisselle et des couverts utilisés lors du service, ainsi que...
-
24-037 Survivability of Photovoltaic Assemblies to
il y a 1 semaine
Lyon, France CNES - Centre National d'Etudes Spatiales Temps pleinDoctorat, 36 mois - Temps plein - Aucune expérience exigée - Maitrise, IEP, IUP, Bac+4 - Space environment and effects **Mission**: With the increase of number of space debris and satellites in low-Earth orbit, the vulnerability of the solar panels fitted to these satellites is becoming a major issue. In this context, CEA-Liten is developing new solar...
-
Postdoc in Thermodynamics and Modeling of a
il y a 4 jours
Lyon, France Institut Mines-Télécom Temps plein**JOB ENVIRONMENT**: - Institut Mines-Télécom_ is the leading public group of engineering and management _Grandes Écoles_ in France. Consisting of eight public graduate _Grandes Écoles_ and two subsidiary graduate schools, _Institut Mines-Télécom_ leads and develops a rich ecosystem of partner schools, economic, academic and institutional partners,...
-
24-292 Observing Lagrangian Transport in The
il y a 1 semaine
Lyon, France CNES - Centre National d'Etudes Spatiales Temps pleinDoctorat, 36 mois - Temps plein - Aucune expérience exigée - Maitrise, IEP, IUP, Bac+4 - Oceanography **Mission**: Oceanic fine scale (1-200km) motions associated with eddies and fronts control transport processes in the upper ocean, and affect ocean physics and ecology up to the climate scale. This is because of the strong spatial gradients that...
-
Head of in House Training
il y a 4 semaines
Lyon, France GL EVENTS Temps plein**Poste**: **_On the short term you will oversee: _** - To ensure the creation of training in partnership with business experts and HR teams in face-to-face and remote by putting all the modules online. - Identify GPEC needs and suitable trainers. - Facilitate, deploy training modules, and manage projects up to the Rex that follows the pilot (evaluation of...
-
Hôte/hôtesse D'accueil en Restaurant
Il y a 2 mois
Lyon 2e, France RESTAURANT HARD ROCK CAFE Temps plein_**Qui sommes nous?**_ Née à Lyon, inspiré par Lyon. Le hard rock café établissement du groupe lyonnais de restauration CBH à vu le jour en 2016. Avec une capacité de 250 couverts et une quarantaine de salariés, il est devenu un incontournable du paysage lyonnais. Ayant à cœur de travailler en circuit court avec des producteurs locaux, le Hard...
-
Food & Beverage Manager to Work in Ireland
Il y a 2 mois
Lyon, France iNUA Collection Careers Temps pleinJoin our prestigious **iNUA Collection**, a leading chain of hotels renowned for delivering exceptional guest experiences. With a commitment to excellence and innovation, we are dedicated to providing unparalleled hospitality across all our properties. **Key Responsibilities**: - Manage and oversee all aspects of the Food & Beverage department, including...
-
24-009 Satellite Observations in Support to 250 M
il y a 1 semaine
Lyon, France CNES - Centre National d'Etudes Spatiales Temps pleinDoctorat, 36 mois - Temps plein - Aucune expérience exigée - Maitrise, IEP, IUP, Bac+4 - Continental biosphere **Mission**: The first part of the PhD consists in the assimilation of Snow Cover Fractions derived from optical imagery. To take benefit from operational processing chains already operated by CESBIO, CNES, and Meteo-France, the complementarity...
-
Group Leader in Hepatology
il y a 2 semaines
Lyon, France Springer Nature Temps plein**Group leader in Hepatology**: - Employer- Lyon Hepatology Institute - Université Claude Bernard Lyon 1- Location- Lyon (Ville), Rhône (FR)- Salary- Up to 80 000€ per annum (based on experience)- Closing date- 24 Mar 2024- Discipline Biomedicine Job Type Principal Investigator Employment - Hours Full time Duration Permanent Qualification PhD ...
-
Receiving/Shipping Agent
Il y a 2 mois
Lyon, France Snaphunt Temps pleinThe OfferFantastic work cultureFlexible working optionsA role that offers a breadth of learning opportunitiesThe JobYour responsibilities will include: Receive, check and store products in accordance with internal procedures; Prepare, package and organize shipments of goods; Ensure inventory management and data updates in our ERP system; Replenish...
-
Receiving/Shipping Agent
il y a 3 semaines
Lyon, France Snaphunt Temps pleinThe OfferFantastic work cultureFlexible working optionsA role that offers a breadth of learning opportunitiesThe JobYour responsibilities will include: Receive, check and store products in accordance with internal procedures; Prepare, package and organize shipments of goods; Ensure inventory management and data updates in our ERP system; Replenish...
-
Au Pair job in Lyon, Auvergne-Rhône-Alpes
il y a 5 jours
Lyon, Auvergne-Rhône-Alpes, France AuPair Temps pleinWork abroad in Intissar's family for 10-24 Months starting from Jun 2024 as an Au Pair to take care of 2 children of 1 - 5 years old & years old in Lyon, Auvergne-Rhône-Alpes France
-
Rock Laboratory Technician
il y a 1 semaine
Lyon, France Metso Outotec Temps pleinJoin an industry leader and make a positive change in the sustainable use of the world’s natural resources. Together, we will transform the business and drive the industry toward a greener future. At Metso, you will be supported by our inclusive culture and a network of colleagues from around the world. With us, you will embark on a personal growth...
