Dario Buttitta

Istituto Nazionale di Geofisica e Vulcanologia

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Antonio Caracausi

Istituto Nazionale di Geofisica e Vulcanologia

Michele Paternoster

Istituto Nazionale di Geofisica e Vulcanologia

Matteo Picozzi

National Institute of Oceanography and Applied Geophysics

Marco Petitta

Sapienza University of Rome

F. Gori

Roma Tre University

Attilio Sulli

University of Palermo

L. Chiaraluce

Istituto Nazionale di Geofisica e Vulcanologia

Marino Domenico Barberio

Istituto Nazionale di Geofisica e Vulcanologia

Giorgio Capasso

Istituto Nazionale di Geofisica e Vulcanologia

Antonio M. Álvarez‐Valero

Universidad de Salamanca

Cooperative Institutions

Istituto Nazionale di Geofisica e Vulcanologia

Sapienza University of Rome

University of Basilicata

University of Palermo

National Research Council

Terra

National Research Council - Institute of Methodologies for Environmental Analysis

Institute of Environmental Geology and Geoengineering

University of Perugia

Istituto Superiore per la Protezione e la Ricerca Ambientale

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Origin and significance of hydrocarbons in CO2-rich gases from Central Italy seismic areas

Geochemical Perspectives Letters (2024)

Alessandro Ricci Ygor Oliveri Dario Buttitta G. Capasso L. Chiaraluce

10.7185/geochemlet.2447

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Earthquakes control the impulsive nature of crustal helium degassing to the atmosphere

Communications Earth & Environment (2022)

Antonio Caracausi Dario Buttitta Matteo Picozzi Michele Paternoster Tony Alfredo Stabile

Abstract Deep fluids play active roles during the preparatory phases of large earthquakes and, through their chemical signature, carry information about deep processes within the seismogenic crust. Due to its inertness and isotopic signature, helium (the lightest noble gas) is a useful tracer for investigating the processes of storage and transfer of fluids through the crust, including those prior to hazardous earthquakes. Here we analyse a 12-year earthquake catalogue from the Irpinia Fault Zone, Italy, to compute the 4 He outputs from the seismogenetic fault zones (from 10 4 to 10 6 mol y −1 with an annual tenfold variability) and compare these with estimates of long-term helium flux. We find that low-magnitude earthquakes (M < 4) efficiently contribute to variations of the crustal helium output into the atmosphere which supports the impulsive nature of He degassing in tectonically active continental regions. We conclude that there is a quantitative relationship between crustal helium outputs and the volume of fault zones, and suggest variations in helium flux may represent a gauge of changes in the stress field that are related to the nucleation of earthquakes.

Isotopes of helium

Dome (geology)

10.1038/s43247-022-00549-9

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Citations (21)