Concept
Volcanic gas
Related publications (34)
Biomass screening for syngas production by flash photopyrolysis
Hubert Girault, Mathieu Soutrenon, Wanderson Oliveira Da Silva
A few seconds flash photopyrolysis is used as efficient screening tool for the investigation of selected biomass in producing syngas, hydrogen and biochar. This innovative approach allowed rapid pyrolysis of the biomass, which was followed by a precise gas ...
Royal Soc Chemistry2024The influence of water-saturation on the strength of volcanic rocks and the stability of lava domes
Marie Estelle Solange Violay, Michael Heap
The rocks forming a volcanic edifice or dome are typically saturated or partially-saturated with water. However, most experiments aimed at better understanding the mechanical behaviour of volcanic rocks have been performed on dry samples, and therefore mos ...
2023Permeability, alteration, and microstructure: A (hopefully) coupled rock physics and geochemical approach to how rock-fluid interactions change permeability
Permeability is a key physical property across all spatial scales in the Earth’s crust and exerts significant control on the behaviour of Earth systems, with implications for natural hazards (e.g., earthquakes, slope instabilities, volcanic eruptions) and ...
2023Novel low-temperature fiber sensing technique using Brillouin scattering in gas
Luc Thévenaz, Yuting Yang, Marcelo Alfonso Soto Hernandez
Brillouin scattering in gases shows the unique property to offer an enhanced temperature sensitivity at very low temperatures. This attractive solution for cryogenic systems is justified theoretically and validated experimentally. ...
2023The Permeability of Porous Volcanic Rock Through the Brittle-Ductile Transition
Marie Estelle Solange Violay, Gabriel Gérard Dominique Meyer, Corentin Jean-Marie Rémi Noël, Michael Heap
The permeability of volcanic rock controls the distribution of pore fluids and pore fluid pressure within a volcanic edifice, and is therefore considered to influence eruptive style and volcano deformation. We measured the porosity and permeability of a po ...
AMER GEOPHYSICAL UNION2022Year-round trace gas measurements in the central Arctic during the MOSAiC expedition
Julia Schmale, Ivo Fabio Beck, Hélène Paule Angot
Despite the key role of the Arctic in the global Earth system, year-round in-situ atmospheric composition observations within the Arctic are sparse and mostly rely on measurements at ground-based coastal stations. Measurements of a suite of in-situ trace g ...
2022Enrichment of immobile elements in synmagmatic fractures
Alexandra Roma Larisa Kushnir, Michael Heap
Useful minerals containing rare Earth elements (REE) and metals are sourced from magma bodies, but exactly how these elements initially leave the magma is not well known. Here we present textural and chemical analyses of mineral-filled fracture bands withi ...
2022Taking the pulse of volcanic eruptions using plagioclase glomerocrysts
Anders Meibom, Stéphane Laurent Escrig, Anders McCarthy, Pierre Vonlanthen
Crystallization timescales in subvolcanic systems and the consequences of interaction between ascending magmas and gases remain largely unconstrained, as do links between these processes and monitoring signals at restless volcanoes. We apply diffusion chro ...
ELSEVIER2020Continuous in situ measurement of dissolved methane in Lake Kivu using a membrane inlet laser spectrometer
We report the first high-resolution continuous profile of dissolved methane in the shallow water of Lake Kivu, Rwanda. The measurements were performed using an in situ dissolved gas sensor, called Sub-Ocean, based on a patented membrane-based extraction te ...
Copernicus GmbH2020Three-dimensional radiative transfer effects on airborne and ground-based trace gas remote sensing
Alexis Berne, Dominik Brunner, Thomas Wagner
Air mass factors (AMFs) are used in passive trace gas remote sensing for converting slant column densities (SCDs) to vertical column densities (VCDs). AMFs are traditionally computed with 1D radiative transfer models assuming horizontally homogeneous condi ...
2020