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Ali Batikh (Colas Environnement/ BRGM/IPGP)27/03/2024 13:30Poster
Poly- and perfluoroalkyl substances (PFAS) have been manufactured since the 1950s. One of the main applications of PFAS is as a low-viscosity sealant in aqueous film-forming foam (AFFF) to extinguish hydrocarbon fires. The irrational use of AFFF in firefighting sites contaminated the soil and water system,signaling a serious and complex sanitary and environmental risk. It is therefore...
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Paul DERAND (ENS)27/03/2024 13:32GeophysicsPoster
On 6 February 2023, the Mw 7.8 Pazarçik earthquake ruptured the left-lateral East Anatolian Fault in southern Türkiye after initiating in the nearby Narli fault zone. It was followed 9 hours later by the Mw 7.5 Elbistan earthquake that occurred on the nearby Surgu-Cardak fault zone. We model the coseismic slip distributions for these two earthquakes using geodetic data, including Sentinel-2...
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Wenxin XIE (IPGP)27/03/2024 13:33Poster
Magma chamber reservoirs host melt from the deep Earth, which erupts to form the volcanic edifices, the upper oceanic crust, and cools to form the lower gabbroic crust. It also sources heat for hydrothermal circulation and for the formation of black smokers along ocean spreading centres. The top of magma reservoirs is generally imaged using seismic reflection imaging techniques, designed as...
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Saksham Rohilla (IPGP)27/03/2024 13:34GeologyPoster
The traditional understanding of plate tectonics posits rigid plates primarily undergoing deformation at narrow plate boundaries. However, the equatorial Indian Ocean presents a unique scenario with a diffused deformation zone spanning approximately 3000 km within the Indo-Australian plate. Past investigations have identified N-S compression in the Central Indian Ocean basin and strike-slip...
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Marie-Margot Robert (IPGP)27/03/2024 13:35Data AnalysisPoster
Significant geogenic carbon dioxide (CO2) emissions have been reported worldwide at plate boundaries in both volcanic and non-volcanic contexts. Specific hydrothermal manifestations observed at the surface show large CO2 emissions that remain difficult to quantify precisely. These include “CO2 rivers”, which are turbulent, negatively buoyant flows that propagate near the surface following the...
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Yassine Boukhari (Institut de Physique du Globe de Paris, Planetology and Space Sciences)27/03/2024 13:36GeophysicsPoster
With rates locally exceeding one centimeter of denudation per year [1,2], i.e., more than 100 t/ha/year, the Durance basin in the French Alps is one of the world’s most heavily eroding areas [3]. A combination of favorable conditions explains this phenomenon, including a very steep topography, sparse vegetation and a particular susceptibility of the Jurassic black marls, also called Terres...
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I Cheong Hong (APC/France)27/03/2024 13:37Poster
The Deep Underground Neutrino Experiment (DUNE) is a cutting-edge international neutrino experiment under construction now in US, which uses Liquid Argon Time Projection Chambers (LArTPCs) as its main detector technology for particle identification on the far site in the SURF facility in South Dakota. The far detector (FD) modules will be able to detect longbeam neutrinos (generated by a...
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Arthur DELORME (Institut de physique du globe de Paris)27/03/2024 13:38Data AnalysisPoster
Optical satellite images are proving to be a valuable tool for quantifying the deformation of the ground surface caused by an earthquake, especially in the direct vicinity of the co-seismic surface rupture, where InSAR often saturates, due to the amplitude of the displacement. When comparing an image acquired before the earthquake with an image acquired after, using correlation to measure...
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M. Hamza Akka (1- Laboratoire de Géologie - UMR8538, École Normale Supérieure – PSL, CNRS, Paris / 2- Lab Recherche & Développement en Géosciences Appliquées, FSTT Abdelmalek Essaadi University, Tangier)27/03/2024 13:39Data AnalysisPoster
My thesis topic deals with integrating multisource data to improve seismic risk assessment in northern Morocco, located on the active tectonic plate boundary between Africa and Eurasia. The main objective is to further estimate the seismic hazard in the region and provide a comprehensive background for urban planning to mitigate seismic risk. My research is based on seismic analysis, space...
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M. Rodrigo Arturo Flores Allende (IPGP)27/03/2024 13:40Poster
Understanding the rupture mechanism, distribution, and migration of seismicity following a large earthquake depends on the quality of available earthquake catalogs (uncertainties, completeness magnitude, etc.). In this study, we investigate the aftershock sequence recorded by several temporary arrays deployed in the zone of the 2010 Mw 8.8 Maule earthquake in Chile, using a combination of deep...
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Tom Laclavère (APC)27/03/2024 13:41Poster
The quest for B-mode polarization of the Cosmic Microwave Background is among the main challenges in Observational Cosmology. Measurement of B-mode polarization in the CMB will be clear evidence of the presence of primordial gravitational waves which are theoretically expected to be produced during inflation about $10^{-35}$ seconds after the Planck epoch. The B-mode measurement is perhaps the...
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ZIMING LIU (Peking University)27/03/2024 13:42Poster
Shallow creep, as a widespread phenomenon in the earthquake cycle, plays an important role in understanding the behavior of faults and seismic hazards. InSAR has been widely used to measure the interseismic deformation of strike-slip faults. In the previous study, we used the phase gradient stacking method to obtain the strain rate maps along the North Anatolian Fault (NAF) and found that the...
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Marwa SAFA (Gustave Eiffel University-France and CNRS-Lebanon)27/03/2024 13:43Poster
In seismic hazard assessment, using Vs30 proxies and 1D shear wave velocity profiles often leads to underestimated ground motion, especially in complex geological areas like Greater Beirut (GB). This metropolis, near active seismic faults and with a history of significant earthquakes (551, 1202, 1837), features diverse soil types, necessitating detailed...
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Arthur Hauck (IPGP)27/03/2024 13:44Poster
Volcanic eruptions threaten neighbouring populations. The goal of volcanoes’ monitoring is therefore to anticipate the onset of eruptions and track their evolution over time in order to assist in decision-making during the crisis. This requires to detect and map changes at the surface of an erupting volcano in near-real time. Going on the field during an eruption may be very risky especially...
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Margot Debruycker (IPGP)27/03/2024 13:45GeochemisteryPoster
Chondrites are primitive and undifferentiated meteorites. These objects have a composition that has remained largely unchanged since the early stages of the solar system formation. They are therefore extensively studied to understand planetary formation, particularly that of Earth, including the origin of its volatiles.
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Sulfur has four stable isotopes, allowing for the measurement of... -
M. Qiwen Zhu (Institut de physique du globe de Paris)27/03/2024 13:46Poster
The collision of the Indian and Eurasian plates has resulted in high-altitude Tibetan Plateau with profound seismic activity. Within this natural geological laboratory, a symphony of geodynamic phenomena unfolds, including plate underthrusting, tearing, mantle upwelling and rift formation. In this study, we apply the seismic box tomography to the southern Tibetan Plateau, aiming to quantify...
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Charlotte Gaugne27/03/2024 13:47Poster
The core-mantle boundary appears as a complex region at the interface between the fast-moving core flows and the slowly convecting mantle, which could play a role in understanding sudden changes in the secular variation of the geomagnetic field, the ‘geomagnetic jerks’. One hypothesis suggests that temporal variations in CMB topography may be involved, potentially affecting core flows at the...
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Sampriti Mukherjee (IPGP)27/03/2024 13:48Poster
Oceanic Transform faults (OTF) are active, mainly strike-slip, tectonic plate boundaries, which segment Mid Oceanic Ridge axes. Along subduction zones, areas where Oceanic Fracture Zone (OFZ), the seismically inactive extension of OTF are being subducted, seem to be associated with higher seismic activity, thicker crust formation and distinct chemical signatures in produced arc lavas. As all...
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Valentine Puzenat (Institut de Physique du Globe de Paris)27/03/2024 13:49Poster
Unlike subaerial volcanic activity, deep submarine eruptions are difficult to detect, observe in real-time, and monitor. Here we use high-resolution (~2 m) bathymetry from a Remotely Operated Vehicle (ROV) to document seafloor morphologies associated with the 2018 submarine eruption offshore Mayotte. Optical imagery (videos and still images) from the ROV provides ground-truth for geological...
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Lise Firode (Observatoire Volcanologique du Piton de la Fournaise, Université Paris Cité, Institut de Physique du Globe de Paris, CNRS, F-75005, Paris France.)27/03/2024 13:50Poster
Volcanic environments frequently generate seismic activity. This is the case for La Réunion island's two major volcanic edifices (Piton des Neiges and Piton de la Fournaise), where significant seismic activity is recorded. While the seismicity of Piton de la Fournaise can be easily explained by its volcanic activity (more than three eruptions per year since 2014), the seismic activity of Piton...
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adrien saurety (ipgp)27/03/2024 13:51GeophysicsPoster
Large impacts dominated the accretion during the early solar system. They contribute to the
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heating, melting, and sometimes vaporization of the impact bodies. Quantifying the frequency of
the different resulting structures’ aftershocks is a key point in understanding the evolution of the
protoplanetary disk. In this study, we work on the behavior of early Earth-like materials... -
Fan Zhou (ENS-PSL)27/03/2024 13:52Poster
The South China Sea (SCS) is unique among the worldwide supra-subduction oceanic basins as continental rifting occured in the lower plate, long after an orogenic collapse, quite far from the surrounding active subduction zones. Using seismic imaging results and thermo-mechanical modeling, many authors infer an important role of thermal, compositional and structural inheritance during the onset...
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Pilar Iváñez Ballesteros (APC - Université Paris Cité)27/03/2024 13:53TheoryPoster
Neutrinos, electrically-neutral particles interacting exclusively through the weak force, were initially considered massless in the Standard Model. However, the discovery of neutrino oscillations in vacuum and matter by Super-Kamiokande (1998) and the Sudbury Neutrino Observatory (2002), respectively, established that neutrinos are massive. Thus, neutrinos became the first evidence of physics...
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