This chapter reviews several facets of the study of volcanic gases. The focus of the review is
generally, but not exclusively on" high-temperature volcanic gases"—ie, gases emitted at …

Some 300–600 Tg of volatiles are globally vented each year by arc volcanism. Such arc gas
emissions have contributed to past and present-day evolution of the Earth atmosphere and …

Volcanism and metamorphism are the principal geologic processes that drive carbon
transfer from the interior of Earth to the surface reservoir. 1–4 Input of carbon to the surface …

Despite the abundance of SO2 (g) in magmatic gases, precursory increases in magmatic
SO2 (g) are not always observed prior to volcanic eruption, probably because many …

Abstract The December 1989–June 1990 eruption of Redoubt Volcano affected commercial
and military air operations in the vicinity of Anchorage, Alaska. These effects were due to the …

So far, the role of present-day Earth degassing in global C budget and climate effects has
been focused to volcanic emissions. The non-volcanic escape of CO2–CH4 from the upper …

Despite its relatively minor abundance in magmas (compared with H2O and CO2), sulfur
degassing from volcanoes is of tremendous significance. It can exert substantial influence …

A comprehensive, time-averaged inventory of subaerial emissions of mercury from
volcanoes that were active between 1980 and 2000 is derived based on the Hg/SO2 ratios …

Explosive eruptions involve mainly silicic magmas in which sulfur solubility and diffusivity
are low. This inhibits sulfur exsolution during magma uprise as compared to more mafic …

In an effort to better understand processes that control sources of CO2 in the carbon cycle,
the US Global Change Research Program [CEES, 1990] identifies imbonate deposition, and …