Laurent Dezileau
101
Documents
Presentation
**Spécialités** : Géochimie, radiochimie, géochronologie, sédimentologie, géomorphologie.
**Thématiques** : Paléoclimatologie, paléohydrologie, paléotempestologie, paléoenvironnement, paléocéanographie.
**Chantiers** : Maroc, Tunisie, Algérie, Taiwan, Chili, Espagne, France, Océan Austral, Océan Pacifique
**Compétences analytiques et techniques** : Nomination Personne Compétente en Radioprotection (PCR) option sources scellées, appareils électriques émettant des rayons X et accélérateurs de particules ; Radiochimie (U,Th, Po).
**Instruments et laboratoires** : Spectrométrie nucléaire, FluoX portable, granulométrie laser, laboratoire de radiochimie, laboratoire de sédimentologie/géochimie/granulométrie
**Recherche actuelle: Paleotempestology, Paleohydrology (Paleomex)**
In the context of future climate change, there is an increasing concern that extreme climatic events may be changing in frequency and intensity. Storms and floods have been for long a threat for the western Mediterranean coast even if their link with climate variability is still misunderstood. This is in partly due to the fact that extreme events are inherently rare and difficult to observe in the period of a human life and to the lack of long-term observations or paleo-reconstructions. Understanding causes of their occurrence both in past and present climate, i.e. under different forcings, is an crucial issue for future predictions considering the growing number of people living in the coastal Mediterranean in high-risk areas and therefore enhanced exposure. Natural systems are highly sensitive to intense climate episodes but impact assessment strongly depends on the resiliency and capability for adaptation and mitigation of each system. In order to place such events in the broader context of climate change, it is essential to document their occurrence, both in space and time, over period of several centuries or millennium. One of the PALEOMEX projects intend to combine paleo-data and model simulations to (i) document the occurrence of extreme events (floods and storms) that have impacted the western Mediterranean coastal region during the last millennium, high resolution bio- and geo-proxies will be compared with historical sources in order to illustrate, quantify, date and test the reliability and frequency of past disastrous events, (ii) investigate the relationship between these events and climate variability and trends (iii) cross-compare reconstructed climatic series to simulations realized on the coupled climatic models (ARPEGE-NEMO, IPSL) in order to answer the fundamental scientific questions : Are the mechanisms triggering those extreme events governed by internal feedbacks of the climate system ? Which ones ?, What will be the climate variability in the Mediterranean basin ?, What kind of change the region will be the most vulnerable to (trend and / or extreme events) ?, and to develop future scenarios simulations to tentatively assess the extreme floods and storms probabilities in the future.
We will focus on the western Mediterranean coastal region (i.e. Morocco, Algeria, Tunisia, Spain and France) that are particularly sensitive to erosion/submersion during storm events and have societal issues in terms of flood risks.
Publications
- 10
- 8
- 4
- 4
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 18
- 9
- 9
- 8
- 8
- 7
- 7
- 7
- 6
- 6
- 6
- 6
- 6
- 6
- 6
- 5
- 5
- 5
- 5
- 5
- 5
- 5
- 5
- 4
- 4
- 4
- 4
- 4
- 4
- 4
- 4
- 4
- 4
- 4
- 4
- 4
- 4
- 4
- 4
- 4
- 4
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 3
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 7
- 5
- 4
- 3
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 2
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 1
- 4
- 2
- 7
- 7
- 12
- 9
- 14
- 7
- 6
- 5
- 4
- 4
- 5
- 1
- 1
- 4
- 2
- 2
- 1
- 1
- 2
|
Recent Geochemical and Grain Size Distribution of Terrestrial Sediment in Coastal Area from the Watershed of Medjerda River, Gulf of TunisMabrouk Boughdiri; Beatriz Bádenas; Paul Selden; Etienne Jaillard; Peter Bengtson; Bruno R.C. Granier. Paleobiodiversity and Tectono-Sedimentary Records in the Mediterranean Tethys and Related Eastern Areas - Proceedings of the 1st Springer Conference of the Arabian Journal of Geosciences (CAJG-1), Tunisia 2018, Springer, pp.347-351, 2019, Advances in Science, Technology & Innovation, 978-3-030-01451-3. ⟨10.1007/978-3-030-01452-0_83⟩
Book sections
hal-02404904v1
|
Extreme Flood Events Reconstruction Spanning the Last Century in the El Bibane Lagoon (Southeast of Tunisia)Kallel A.; Ksibi M.; Ben Dhia H.; Khélifi N. Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions. EMCEI, Springer, pp.1907-1910, 2018, ⟨10.1007/978-3-319-70548-4_550⟩
Book sections
hal-01861408v1
|
|
|
Human Impact on the Morpho-Sedimentary Evolution on the Coastal Deltaic Zones (Case of Application: Artificial Canal of Medjerda River, Tunisa)Kallel A.; Ksibi M.; Ben Dhia H.; Khélifi N. Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions. EMCEI, Springer, pp.1701-1703, 2018, ⟨10.1007/978-3-319-70548-4_495⟩
Book sections
hal-01861460v1
|
|
Assessment of the Impact of Dams on River Regimes, Sediment Transports to the Sea, and Coastal ChangesKallel A.; Ksibi M.; Ben Dhia H.; Khélifi N. Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions. EMCEI, Springer, pp.31-32, 2018, ⟨10.1007/978-3-319-70548-4_12⟩
Book sections
hal-01861450v1
|
A 2350-Year Sequence of Extreme Events Revealed by Lagoonal Deposits in Northeastern Tunisia (Ghar el Melh Lagoon)Kallel A.; Ksibi M.; Ben Dhia H.; Khélifi N. Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions. EMCEI, Springer, pp.1599-1601, 2018, ⟨10.1007/978-3-319-70548-4_464⟩
Book sections
hal-01861430v1
|
|
|
Past hydrological variability in the Moroccan Middle Atlas inferred from lakes and lacustrine sedimentsThe Mediterranean Region under Climate Change La méditerranée face au changement climatique, 1, pp.57-69, 2016
Book sections
insu-01394690v1
|
Reconstruction of past marine submersion events (storms and tsunamis) on the North Atlantic coast of Morocco2022
Preprints, Working Papers, ...
hal-03592159v1
|
|
Etude morphosédimentaire des marges anciennes des secteurs de Péage-de-Roussillon et de Donzère. OSR4 | Action II.3[Rapport de recherche] CNRS; ENTPE. 2017
Reports
hal-03749274v1
|