CO₂ flux emissions from the Earth's most actively degassing volcanoes, 2005-2015.

ABSTRACT: The global carbon dioxide (CO₂) flux from subaerial volcanoes remains poorly quantified, limiting our understanding of the deep carbon cycle during geologic time and in modern Earth. Past attempts to extrapolate the global volcanic CO₂ flux have been biased by observations being available for a relatively small number of accessible volcanoes. Here, we propose that the strong, but yet unmeasured, CO₂ emissions from several remote degassing volcanoes worldwide can be predicted using regional/global relationships between the CO₂/S_T ratio of volcanic gases and whole-rock trace element compositions (e.g., Ba/La). From these globally linked gas/rock compositions, we predict the CO₂/S_T gas ratio of 34 top-degassing remot

SUBMITTER: Aiuppa A 

PROVIDER: S-EPMC6443792 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature