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STEP'UP PhD Congress 2026 - Congrès des Doctorant·es CDD 2026

30–31 mars 2026
IPGP
Fuseau horaire Europe/Paris

Contact

Session

Poster

30 mars 2026, 12:15
IPGP

IPGP

1 rue Jussieu 75005 Paris

Documents de présentation

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  1. 78. Acoustic fluidization study in rock avalanches using DEM-type models
    30/03/2026 12:15
    Earth and Environment
    Poster
  2. 39. Active learning with Bayesian neural networks for stellar population synthesis
    30/03/2026 12:15
    Physics of the Universe
    Poster
  3. 24. Ambient Noise Cross-Correlations along Distributed Acoustic Sensing (DAS) for Imaging the Subsurface at Stromboli Volcano
    30/03/2026 12:15
    Earth and Environment
    Poster

    The deployment of dense seismic arrays on volcanoes has increased significantly over the past decades, enabling more precise monitoring of volcanic activity. While short-period sensors are commonly used, Distributed Acoustic Sensing (DAS) represents a promising complementary technology, providing high spatial resolution and remote location of the interrogator. Accurate monitoring requires a...

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  4. 79. Applying likelihood-based spectral ratios to assess robustness and limitations of earthquake source parameter estimation
    30/03/2026 12:15
    Earth and Environment
    Poster
  5. 88. Attributing gridded land use change carbon emissions to crop and grass production from 2000 to 2020
    30/03/2026 12:15
    Earth and Environment
    Poster
  6. 5. Beyond Expectations: Unusual Water and Salt Chemistry in the Okavango Delta (Botswana)
    30/03/2026 12:15
    Earth and Environment
    Poster

    Wetlands developing in semi-arid regions are increasingly affected by salinisation and trace element enrichment; processes that should increase in time with climate changes and anthropic activities. The Okavango Delta (Botswana) provides a rare example of a pristine wetland that nevertheless shows evidence of trace element contamination. This alluvial fan located in the SW termination of the...

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  7. 49. Biological Baselines of Magnesium Isotope composition in Mouse Organs and Fluids Across Ages
    30/03/2026 12:15
    Earth and Environment
    Poster
  8. 32. Building a Catalog for Near-Source Ground Motion Analysis of Moderate Earthquakes using the February 2023 Türkiye Sequence
    30/03/2026 12:15
    Earth and Environment
    Poster

    Seismic hazard assessment partly relies on the ability to predict ground motion, particularly near the source, where damage is generally the most severe. In this region, existing strong-motion database lack sufficient recordings, leading to poorly calibrated prediction models and large uncertainties. My PhD research aims to confront these models with seismic ground motions recorded close to...

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  9. 44. Chlorine Incorporation in Iron Phosphate and Borate Glasses for Nuclear Waste Immobilization
    30/03/2026 12:15
    Earth and Environment
    Poster

    Chlorine is a volatile element commonly found in various types of waste, including legacy radioactive waste and waste generated by molten salt reactors. The presence of chlorine in these wastes represents a significant challenge for long-term immobilization, as its vitrification in conventional borosilicate glasses is hindered by the low solubility of chlorine, leading to volatilization losses...

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  10. 14. Compositional analyis of Copahue volcanic ash based on visual methods and machine learning.
    30/03/2026 12:15
    Earth and Environment
    Poster
  11. 43. Copper binding to natural organic matter studied through UV-Vis absorbance
    30/03/2026 12:15
    Earth and Environment
    Poster

    The bioavailability and ecotoxicity of trace metals (such as Cu, Cd, and Pb) in the environment is largely governed by sorption processes. Natural organic matter (NOM) serves as the primary sorbent in soils and aquatic systems. It is known that NOM binds trace metals through some of its functional groups, particularly carboxylates and phenolates. However, due to its heterogeneous and...

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  12. 89. Coupling Atmospheric Fractionation and Hydrodynamic Escape: Implications for Sub-Neptunes
    30/03/2026 12:15
    Physics of the Universe
    Poster

    Sub-Neptunes are the most abundant class of exoplanets found in the universe,
    yet they have no analogue in our own Solar System. Understanding their atmospheres and the underlying physical processes remains of prime interest. Despite significant progress in exoplanet observations and modeling, many aspects of sub-Neptune atmospheres remain poorly constrained. In particular, their atmospheric...

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  13. 6. Deep-learning based large-scale automated observation of earthquake surface ruptures
    30/03/2026 12:15
    Earth and Environment
    Poster

    Rapid and objective mapping of co-seismic surface ruptures is essential for post-earthquake impact assessment and for improving our understanding of fault geometry, stress transfer, and rupture processes that inform longer-term seismic hazard analyses. However, rupture mapping has traditionally relied on manual interpretation of field observations or remote-sensing data, which is...

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  14. 36. Design and Multi-Scale Evaluation of Colloidal Gas Aphrons (CGA) for Subsurface Remediation
    30/03/2026 12:15
    Earth and Environment
    Poster
  15. 86. Disequilibrium chemistry in the atmosphere of exoplanets
    30/03/2026 12:15
    Physics of the Universe
    Poster

    Since the first discovery of a hot Jupiter in 1995 (Mayor & Queloz, 1995), and the detection of the atmosphere of one of them (Charbonneau et al., 2002) the accurate modeling of exoplanetary atmospheres has become central to understand planet formation, chemical composition, and whether their pressure and temperature conditions support the existence of liquid water at their surfaces. With the...

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  16. 70. Dynamics of magma reservoir before and after volcanic eruptions at Axial Volcano in the Eastern Pacific using time-lapse seismic imaging method
    30/03/2026 12:15
    Earth and Environment
    Poster

    Unraveling the nature (physical state) of magma reservoirs beneath active volcanoes is essential to understand their eruption potential. Magma can be in a pure melt state and hence it is more likely to erupt if supplied by fresh melt from below, or in a mush state that is less likely to erupt. However, imaging magma reservoirs on land and deciphering their physical properties is inherently...

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  17. 77. Evolution of photosynthetic carbon isotope fractionation in Lake Dziani Dzaha during a high CO2 event: connecting modern and Precambrian conditions
    30/03/2026 12:15
    Earth and Environment
    Poster
  18. 61. Experimental studies and numerical modeling of PFAS concentration using foam fractionation, optimization for the recovery of short- and ultra-short-chain PFAS
    30/03/2026 12:15
    Earth and Environment
    Poster

    Abstract. This study addresses the current challenges of understanding and managing PFAS contamination. It pays particular attention to the limitations of existing separation technologies and the incomplete description of the mechanisms of PFAS behaviour in air water phase. Through an examination of recent literature, the study identifies key unresolved questions concerning interfacial...

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  19. 64. Exploratory analysis of salt deposits distribution in the Okavango Delta (Botswana) using satellite data.
    30/03/2026 12:15
    Earth and Environment
    Poster

    This poster will discuss about the preliminary results of a teledetection study in the Okavango Delta (Botswana). The aim of the study is to analyse the spatial and temporal distribution of salt deposits on the surface of the Delta, using Sentinel-2 and Pleiade-NEO images.

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  20. 4. Fluvio-aeolian paleogeographic evolution of the Namib Desert throughout Cenozoic climate and geodynamic changes
    30/03/2026 12:15
    Earth and Environment
    Poster

    Desert landscapes are highly-sensitive environments to climate changes. This high sensitivity is mostly due to their scarce water resources, together with a direct exposure of bare rocks and soils to meteorological
    phenomena. As a result, in these arid environments, even minor shifts in hydroclimatic conditions can significantly modify hydrography, vegetation cover, and sediment transport by...

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  21. 20. Foam-assisted (bio)remediation of petroleum-contaminated soil: effects of surfactant formulation on foam behaviour, interfacial properties, and bioavailability
    30/03/2026 12:15
    Earth and Environment
    Poster

    Soil contamination by refined petroleum hydrocarbons remains a significant environmental problem due to these compounds' toxicity, persistence, and mobility. Bioremediation has emerged as an environmentally friendly and cost-effective approach that uses microorganisms to degrade hydrocarbons into less harmful substances. However, its overall performance is often limited by nonuniform...

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  22. 34. Galaxy overdensity catalogues with Euclid and Spitzer at z>1.3
    30/03/2026 12:15
    Physics of the Universe
    Poster

    Galaxy clusters provide a powerful way to study how galaxies evolve. At redshifts up to $z\sim1$, dense regions like clusters tend to host massive quenched galaxies, while isolated galaxies remain more active. However, this trend is less understood at higher redshifts, where some cluster cores still show strong star-formation. When do these changes appears?

    In this work, we aim to establish...

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  23. 55. Gravitational Wave Bursts from Extreme Mass Ratio Inspirals
    30/03/2026 12:15
    Physics of the Universe
    Poster
  24. 8. High-precision Sb isotopes of carbonaceous chondrites : implications for origin of the MVEs depletion
    30/03/2026 12:15
    Earth and Environment
    Poster
  25. 27. Holographic baryons as quantum Hall droplets
    30/03/2026 12:15
    Physics of the Universe
    Poster
  26. 54. Hyperspectral remote sensing of arid environments on Earth and on Mars
    30/03/2026 12:15
    Earth and Environment
    Poster

    The Asal-Ghoubbet rift in the Republic of Djibouti serves as an exceptional natural laboratory of planetary interest, characterized by complex igneous lithology, hydrothermal alterations, and Holocene evaporitic deposits. The EnMAP (Environmental Mapping and Analysis Program) hyperspectral mission provides a critical opportunity to characterize these surfaces through high-resolution...

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  27. 75. Impact of Escherichia coli on the Platinum speciation
    30/03/2026 12:15
    Earth and Environment
    Poster

    The anthropogenic use of platinum (Pt) has significantly altered its biogeochemical cycle over recent decades [1], leading to its increasing dispersion in the environment. Microorganisms, ubiquitous in ecosystems, strongly influence metal speciation. While some metals are essential for microbial metabolism, their transformations may also generate toxic forms that microorganisms mitigate...

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  28. 82. Impact of extreme ultraviolet radiation on the scintillation of pure and xenon-doped liquid argon.
    30/03/2026 12:15
    Physics of the Universe
    Poster
  29. 66. Impact of filtering along different scanning directions on CMB galactic foregrounds
    30/03/2026 12:15
    Physics of the Universe
    Poster

    We investigate the impact of scan direction-dependent time domain filtering in Simons Observatory SATs. SO SATs scan in azimuth at constant elevation, separated into "rising" and "setting" scans. Simple filter+bin map-making produce biased CMB maps that can be corrected at the power spectrum level via a transfer function (estimated from simulations). While this correction is robust for a...

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  30. 22. Improving the Prediction of Interfacial Tension and Adsorption at Fluid-Fluid Interfaces for Mixtures of PFAS and/or Hydrocarbon Surfactants by Considering Synergistic Effect
    30/03/2026 12:15
    Earth and Environment
    Poster

    Per- and polyfluoroalkyl substances (PFAS) are a family of compounds listed as persistent, mobile and toxic, posing significant risks to human health and ecosystems. Some PFAS, notably those present in Aqueous Film-Forming Foam (AFFF) exhibit significant adsorption at fluid-fluid interfaces (e.g., air-water interfaces), which play a crucial role in their transport through soil and groundwater....

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  31. 56. In situ investigation of nanoparticles heteroaggregation processes in surface waters
    30/03/2026 12:15
    Earth and Environment
    Poster
  32. 48. Longitudinally hemispheric structures in the geodynamo : from their physical origin to their geomagnetic consequences
    30/03/2026 12:15
    Earth and Environment
    Poster

    The investigation of geomagnetic variations has revealed the presence in Earth's core of a planetary-scale, axially columnar and eccentric gyre flow. Together with the magnetic anomaly of low intensity presently seen beneath the South Atlantic, these structures show that longitudinal hemisphericity is a common feature of the geodynamo. Here, we propose that these hemispherical features result...

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  33. 67. Measuring the neutrino mass ordering with KM3NeT/ORCA and JUNO
    30/03/2026 12:15
    Physics of the Universe
    Poster
  34. 12. Mitigating the impact of solar radiation pressure mismodeling in GNSS station position time series
    30/03/2026 12:15
    Earth and Environment
    Poster

    Time series of GNSS station positions play a central role in the study of Earth’s surface deformation and in the realization of terrestrial reference frames. Despite significant progress, these time series remain affected by non-geophysical signals, thereby limiting the investigation of millimeter-level deformations. Among these perturbations, periodic signals of satellite origin —...

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  35. 30. Model Independent Measurement of ZH Production at FCC-ee
    30/03/2026 12:15
    Physics of the Universe
    Poster
  36. 68. Paleowind directions, paleosecular variation and relative paleointensity from the MIS 6 (L2) loess of Harletz, NW Bulgaria
    30/03/2026 12:15
    Earth and Environment
    Poster

    Loess (L) and paleosol (P) sequences represent continuous continental archives of environmental changes. Apart from their significance as paleoclimate archives, they may also record variations of the Earth’s magnetic field at high temporal resolution. Confirming the reliability of loess sequences as recorders of geomagnetic secular variations (PSV) and relative paleointensity (RPI) would help...

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  37. 3. Potential tsunamis generated by the on-going Mayotte sismo-volcanic crisis: new scenarios, sensitivity tests, and numerical simulations of generated waves.
    30/03/2026 12:15
    Earth and Environment
    Poster
  38. 13. Probing Small-scale Lunar Mantle Heterogeneities using High-frequency P-wave Scattering from Shallow Moonquakes
    30/03/2026 12:15
    Earth and Environment
    Poster

    Small-scale heterogeneities in the lunar mantle can be detected through high-frequency scattering of seismic waves [1], but their characterization is limited by uncertainties in phase picking. In this study, we present a systematic analysis of P-wave arrival times from shallow moonquakes, using a refined picking strategy based on a detailed characterization of pre-event noise and...

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  39. 19. Response of liquid argon to low-energy nuclear recoil in the DarkSide-20k experiment
    30/03/2026 12:15
    Physics of the Universe
    Poster

    The nature of dark matter remains one of the most compelling open questions in particle physics. Although overwhelming gravitational evidence supports its existence, no direct detection via non-gravitational interactions has yet been achieved. Among the proposed candidates, Weakly Interacting Massive Particles (WIMPs) are strongly motivated theoretically. Extensive experimental efforts have...

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  40. 23. Search for Higgs Boson Pair Production in the bbyy Final State with the ATLAS Detector
    30/03/2026 12:15
    Physics of the Universe
    Poster
  41. 28. Source characteristics of Very low frequency earthquakes (VLFE) in the Southern Ryukyu subduction zone
    30/03/2026 12:15
    Earth and Environment
    Poster
  42. 50. Speciation, bioaccumulation and biological feedback: towards a new predictive model for the toxicity of metals and their cocktails in aquatic ecosystems
    30/03/2026 12:15
    Earth and Environment
    Poster
  43. 25. Stabilité des panaches volcaniques en effondrement partiel : modélisation de l’éruption du Fogo A (Açores)
    30/03/2026 12:15
    Earth and Environment
    Poster

    L’éruption Fogo A (~4600 ans BP) sur l’île de São Miguel figure parmi les éruptions pliniennes les plus puissantes documentées dans l’archipel des Açores. L’analyse de sa séquence éruptive révèle une phase initiale phréatomagmatique, suivie du développement d’une colonne plinienne soutenue, puis d’un épisode final d’effondrement partiel de la colonne accompagnant la production de coulées...

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  44. 85. Tales of quadrupole modes: Modelling rotational near-degeneracy effect
    30/03/2026 12:15
    Physics of the Universe
    Poster
  45. 53. Temperature-Dependent Particle Formation During Biomass Combustion: A Combined spICP-TOFMS and Magnetic Susceptibility Study
    30/03/2026 12:15
    Earth and Environment
    Poster

    Wildfires increasingly threaten ecosystems worldwide, yet their impact on nanoparticle formation and environmental mobility remains poorly understood. This study investigates how combustion intensity influences the production, composition, and magnetic properties of inorganic nanoparticles through controlled laboratory experiments on heather biomass. Combining nanoparticles analyses in...

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  46. 40. Testing LISA with the Beam Simulator
    30/03/2026 12:15
    Physics of the Universe
    Poster
  47. 11. The GENESIS mission: a new space geodetic satellite to improve the International Terrestrial Reference Frame (ITRF).
    30/03/2026 12:15
    Earth and Environment
    Poster
  48. 38. The Photon Detection System of the DUNE Vertical Drift Detector
    30/03/2026 12:15
    Physics of the Universe
    Poster
  49. 59. Triggering of a slow-moving landslide by the 2023 Kahramanmaraş Earthquake Doublet, highlighted by satellite image correlation
    30/03/2026 12:15
    Earth and Environment
    Poster
  50. 76. Turbulent mixing of two-phase impactors during giant planetary collisions
    30/03/2026 12:15
    Earth and Environment
    Poster
  51. 18. Understanding pre-eruptive conditions and magmatic processes that led to the 1530 cal. AD eruption at La Soufrière de Guadeloupe
    30/03/2026 12:15
    Earth and Environment
    Poster
  52. 72. VELI : Explosive Volcanoes Indonesian Laboratory - From Observation to Research
    30/03/2026 12:15
    Earth and Environment
    Poster

    The VELI instrumented site, accredited by INSU-CNRS in 2009, aims to develop long-term observatory activities on explosive Indonesian volcanoes. Mount Merapi (Central Java) is the primary target, with the deployment of a comprehensive monitoring platform integrating geophysical and geochemical measurements, including seismicity, ground deformation, electrical and thermal parameters, and gas...

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  53. 26. What does microseismicity reveal a century after a major intraplate earthquake? Insights from a temporary seismic experiment in Mongolia.
    30/03/2026 12:15
    Earth and Environment
    Poster

    Large earthquakes commonly occur along plate boundaries, but, although less frequent, they can also take place within slowly deforming continental interiors. In these intraplate settings, deformation is challenging to measure with geodetic methods, and the long recurrence time of major earthquakes means that direct observations — instrumental or historical — are scarce. Aftershocks and...

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  54. 62. “YOLO-CL : Deep Machine Learning for Galaxy Cluster detection with LSST”
    30/03/2026 12:15
    Physics of the Universe
    Poster

    Galaxy clusters are powerful and key cosmological probes that trace the evolution of large-scale structures of the universe and inform models of cosmic evolution. The Vera Rubin Legacy Survey of Space and Time (LSST) will provide deep, wide-field optical imaging, enabling the detection of thousands of galaxy clusters up to high redshifts. I am adapting the YOLO-CL convolutional neural network...

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  55. 81. Accretion and differenciation of Icy bodies
    Earth and Environment
    Poster

    This poster will focus on the behavior of ice and its influence on the thermal evolution of the first planetary bodies, known as planetesimals, in order to determine the age of iron meteorites. For now, this poster will only address the numerical modeling of this thermal evolution.

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  56. 37. Acoustic and seismic characterization of submerged granular flows
    Earth and Environment
    Poster
  57. 31. Boosting the sensitivity of next generation gravitational wave detectors through quantum correllations
    Physics of the Universe
    Poster

    Frequency dependent squeezing is a crucial and well established technology in current gravitational wave detectors. Future detectors such as Einstein Telescope will heavily rely on this technology since it is the only way to go beyond the standard quantum noise limit and increase the sensitivity of the detectors when we cannot increase the power. Current detectors such as VIRGO and LIGO only...

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  58. 87. Do Stars Always Quiet Down with Age? Insights from Stellar Twins
    Physics of the Universe
    Poster
  59. 15. Investigating Abiotic Organic Synthesis in Archean Rocks from the Canadian Shield
    Earth and Environment
    Poster
  60. 21. Multi-wavelength and multi-messenger study of neutrino emitting AGN candidates
    Physics of the Universe
    Poster
  61. 10. QUBIC: Self-Calibration as an Efficient Method to Control Systematic Effects in Bolometric Interferometry
    Physics of the Universe
    Poster
  62. 84. The influence of LIA-induced viscoelastic deformations on geodetic observations in Greenland
    Earth and Environment
    Poster

    The Greenland Ice Sheet (GrIS) is currently undergoing substantial mass loss, with major
    consequences for both the Earth system and human societies, including a significant
    contribution to the ongoing acceleration of global mean sea level rise. Accurately
    estimating the GrIS mass balance therefore represents a major focus of current research.
    However, it remains challenging and, to date,...

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