Volcanic, Hydrothermal, and Tectonic Outgassing: Physical, Chemical and Isotopic Signatures
A special issue of Quaternary (ISSN 2571-550X).
Deadline for manuscript submissions: 10 August 2026 | Viewed by 2690
Special Issue Editor
Interests: Raman spectroscopy; geochemistry; source-to-sink sedimentary dynamics; environmental mineralogy; mineral pigments; geoheritage and geotourism; earth degassing; planetary mineralogy
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Special Issue Information
Dear Colleagues,
Human beings have long exhibited a fascination, and at times a sense of apprehension, regarding the vivid and odorous manifestations of volcanic emissions. In certain instances, these emissions have been effectively harnessed for their economic value.
The process of outgassing is increasingly recognized as a critical factor influencing the timing and nature of volcanic eruptions. Moreover, the surface emissions of these volatiles can exert substantial impacts on both atmospheric and terrestrial environments, as well as global climate patterns. More fundamentally, these emissions are interlinked with the history of planetary outgassing, the differentiation of the Earth's interior, the chemical composition of the atmosphere and hydrosphere, and the origins and evolution of life.
Volcanoes and hydrothermal regions emit various gaseous volatiles, including water vapor, carbon dioxide, radon, sulfur, hydrogen, and halogen elements, into the atmosphere during and between volcanic activities. The phenomenon of volcanic outgassing represents a significant source of atmospheric components across diverse spatial and temporal scales. These emissions can modify both physical and chemical processes within the Earth's atmosphere and are, over geological timescales, among the primary determinants of planetary habitability.
It is essential to underscore that outgassing is not confined solely to active or dormant volcanoes. Recent research indicates links between outgassing and dynamic stresses generated by large earthquakes, a process termed tectonic outgassing, which originates from deeper regions of the Earth. However, the diffuse nature of tectonic degassing presents considerable challenges for accurate quantification.
Furthermore, it is pertinent to acknowledge that Earth's outgassing is heavily influenced by external variables, including barometric pressure, air and soil temperatures, humidity, wind speed, and precipitation levels.
In light of these considerations, this Special Issue, entitled ‘Outgassing Processes in Volcanic, Hydrothermal, and Tectonic Environments: Physical, Chemical, and Isotopic Signatures’, seeks to publish a compilation of scholarly articles that focus on original research concerning volcanic, hydrothermal, and tectonic outgassing, along with other pertinent themes within these fields.
Dr. Sebastiano Ettore Spoto
Guest Editor
Manuscript Submission Information
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Keywords
- gas geochemistry
- tectonic outgassing
- volcanic outgassing
- radon
- carbon dioxide
- soil–gas flux and turbulence
- noble gas
- isotope geochemistry
- remote sensing of gas emissions
- effect of wind on soil–atmosphere gas exchange
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