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Ciencias de la Tierra

jSEDI

[Journal of Studies of Earth’s Deep Interior]

jSEDI

Journal of Studies of Earth’s Deep Interior

Fundada en 2025, journal of Studies of Earth’s Deep Interior es una publicación multidisciplinar dedicada a la publicación de investigaciones originales en lengua inglesa sobre geociencias y, más concretamente, sobre la Tierra profunda. Editada por ENS Éditions, la revista se publica anualmente, y los artículos van apareciendo a medida que se reciben.

  • Director de publicación: Emmanuel Trizac
  • Redactores en jefe: John Hernlund y Stéphane Labrosse
  • Tipo de soporte: electrónico
  • Periodicidad: anual
  • Año de creación: 2025
  • Fecha de publicación en Episciences: 2025
  • Disciplinas: Ciencias de la Tierra
  • Idioma de publicación: inglés
  • Procedimiento de evaluación: evaluación simple ciega y evaluación abierta
  • Licencia CC BY 4.0
  • Editor: ENS Éditions
    • Dirección postal: 15 parvis René Descartes, BP 7000, 69342 Lyon cedex 07
    • País: Francia
  • Contacto: jsedi AT episciences.org
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Thermochemical models of outer core convection with heterogeneous core-mantle boundary heat flux

Convection in Earth's outer core is driven by the release of heat and light elements at the inner core boundary. A key question is whether these buoyancy sources drive convection throughout the core, or whether a stable layer exists just below the core-mantle boundary (CMB). Recent simulations incorporating CMB heat flux heterogeneities propose locally stable ``regional inversion lenses'' (RILs) rather than a global layer, allowing stable and unstable regions to coexist. However, these simulations combine thermal and compositional anomalies, ignoring differences in diffusivities and boundary conditions. Here we simulate thermal, chemical, and thermochemical convection at Ekman number $E=10^{-5}$, with thermal and chemical flux Rayleigh numbers $\widetilde{Ra}_T=30-4000$ and $\widetilde{Ra}_ξ=30-100000$, and Prandtl numbers $Pr_T=1$ and $Pr_ξ=10$. Purely chemical simulations accumulate light elements below the CMB, forming locally stable regions near the poles or global layers, depending on $\widetilde{Ra}_ξ$. These chemically stratified regions persist in thermochemical simulations even when thermal forcing is destabilising. Introducing heterogeneous CMB heat flux produces thermally stratified RILs even with strongly destabilising compositional buoyancy. Our simulations reveal a diverse range of locations, properties, and morphologies of stable regions depending on $\widetilde{Ra}_T$ and $\widetilde{Ra}_ξ$, they can have a seismically detectable thickness and strength and might also have a signature in geomagnetic observations.
Naskar, Souvik
May 15, 2026
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Principal component analysis of the 2010 reversal of core-surface flow beneath the Pacific Ocean

This paper is published after peer review in the Journal of Studies of Earth's Deep Interior (jSEDI).In this paper, we investigate the behaviour of the fluid flow in the Earth's outre core throughout the 21st century. The flow of the liquid iron cocktail in the Earth's outer core generates the geomagnetic field and its rate of change, the secular variation. Assuming that magnetic diffusion is negligible on timescales shorter than 100 years, we can invert SV observations from ground observatories and geomagnetic satellites for models of the fluid flow at the top of the core. We investigate core-surface flow, modelled from observations of SV from 1997 to 2025. Historically, the core-surface flow has been predominantly westward, as required to maintain a westward-drifting magnetic field, which is associated with a planetary gyre of westward flow, offset from the Earth’s rotation axis. This gyre does not affect the flow in the equatorial Pacific, and we find that the flow here changes in 2010 from weakly westward to strongly eastward. Our model suggest that the Pacific eastwards flow has been weakening since 2020. The rise of the strong eastward flow in the Pacific is contemporary with a change in behaviour in the inner core, as observed from geodesy and seismology, and we hypothesise that these changes in the deep interior triggered the inferred changes in flow beneath the Pacific. 
Madsen, Frederik Dahl
May 06, 2026
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Física

OPS

[Open Plasma Science]

OPS

Open Plasma Science

Creada en 2023, Open Plasma Science es una revista revisada por pares y financiada por la Université de Lorraine. Publica artículos en inglés sobre la ciencia del plasma en el sentido más amplio, desde los plasmas de fusión hasta los plasmas de descarga de alta y baja presión, desde las interacciones plasma-superficie o plasma-líquido hasta la turbulencia en los plasmas, desde la propulsión hasta los procesos de fabricación que utilizan plasmas.

  • Directora de publicación: Hélène Boulanger
  • Redactor en jefe: Jérôme Moritz
  • Tipo de soporte: electrónico
  • Periodicidad: sobre la marcha
  • Año de creación: 2023
  • eISSN: 3076-1468
  • Fecha de publicación en Episciences: 2023
  • Disciplinas: física del plasma
  • Idiomas de publicación: inglés
  • Procedimiento de evaluación: evaluación simple ciega
  • Licencia CC BY 4.0
  • Editor: Université de Lorraine
    • Dirección postal: Institut Jean Lamour, Campus Artem, 2 allée André Guinier, BP 50840, 54011 Nancy Cedex
    • País: Francia
  • Contacto: ops AT episciences.org
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Characterization of a Plasma Source for Water Treatment Using Electrical, Optical, and Chemical Diagnostics

Hospital and urban wastewaters constitute major reservoirs of multidrug-resistant bacteria (MRB), antibiotic resistance genes (ARGs), and persistent pharmaceutical contaminants, which are only partially removed by conventional treatment plants. As a result, these pollutants are frequently detected in treated effluents destined for environmental discharge or reuse, raising serious public health concerns-especially for agricultural irrigation. This study explores a novel immersed dielectric barrier discharge (DBD) plasma source engineered for point-of-use decontamination of wastewater at emission sites. The plasma device was thoroughly characterized by electrical, optical, and chemical diagnostics to elucidate its operating regimes and capacity to generate reactive oxygen and nitrogen species (RONS) at the plasma-liquid interface. Findings demonstrate that the composition of the carrier gas critically shapes the production and transfer of short-and long-lived oxidants into the liquid phase. These results provide quantitative insights that support the ongoing optimization of plasma-based advanced oxidation systems for decentralized water treatment. They further illustrate how the careful control of plasma and gas composition can enhance the formation and transfer of oxidants, contributing to the broader field of plasma-liquid applications for the mitigation of emerging contaminants.

Saba, Maria
May 13, 2026
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Modeling of evaporation of macroparticles of vacuum arcs by an electron beam

The evaporation of droplets in an arc plasma flow under the action of an electron beam injected into the arc plasma and the condition of direct heating of microdroplets by beam electrons are considered. Analytical modeling shows that droplets ≤1 μm in size can be completely evaporated over time scales typical for cathodic arc deposition systems. It is shown that small microdroplets evaporate more intensively. The lower limit working points in terms of plasma electron density, and the electron energy and density of the injected energetic electrons required for droplet evaporation are found.   
Litovko, Iryna
February 11, 2026
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Ciencias humanas y sociales

Transformations

[A DARIAH Journal]

Transformations

A DARIAH Journal

Transformations: A DARIAH Journal es una revista multilingüe creada en 2024 por la infraestructura europea de investigación DARIAH ERIC. Publicación con periodicidad continua, tiene números temáticos en los ámbitos de las humanidades digitales, ciencias sociales y artes. La revista está especialmente interesada en el uso de instrumentos, métodos, y objetos digitales con un enfoque reproducible. Acoge contribuciones científicas sobre corpus de datos, flujos de trabajo y análisis de software.

  • Directora de publicación: Agiatis Benardou
  • Redactor en jefe: Toma Tasovac
  • Editores jefe: Anne Baillot, Françoise Gouzi
  • Tipo de soporte: electrónico
  • Periodicidad: anual
  • Año de creación: 2024
  • eISSN: 3095-3200
  • Fecha de publicación en Episciences: 2024
  • Disciplinas: humanidades digitales, ciencias sociales y humanidades, artes
  • Idiomas de publicación: alemán, inglés, francés
  • Procedimiento de evaluación: evaluación abierta
  • Licencia CC BY 4.0
  • Editor: DARIAH ERIC
    • Dirección postal: 54 boulevard Raspail, 75006 Paris
    • País: Francia
  • Contacto: transformations AT episciences.org
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Últimos artículos

Introduction to Workflows – Part 2

In this second part of the introduction to the first issue of Transformations. A DARIAH journal (dedicated to workflows), we present three articles, respectively dedicated to metadata-based, text-based and musicology workflows.
Baillot, Anne
November 06, 2025
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Supporting executable scientific workflows in a clustered Infrastructure: DARIAH-IT and H2IOSC

Workflows have become essential in digital humanities, enabling the formalisation, automation and reproducibility of complex research processes. As the humanities increasingly adopt data-driven methodologies, workflows offer structured approaches to manage diverse data and tools while supporting transparency and collaboration. Recognising this need, DARIAH-IT has advanced research infrastructure development by focusing on workflow-based services within the H2IOSC (Humanities and Cultural Heritage Italian Open Science Cloud) project. DARIAH-IT leads the design and implementation of a national cloud system to support digital humanities research, ensuring interoperability, FAIR data practices and semantic integration across disciplines. Central to DARIAH-IT’s effort within H2IOSC is AEON (dAriah sErvice Oriented iNfrastructure), a platform that enables the creation, execution and management of scientific workflows. AEON integrates service provisioning, semantic validation and runtime orchestration, supporting reproducible research and collaborative practices.
Degl'Innocenti, Emiliano
October 14, 2025
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