Extended Data Fig. 4: Frequency histogram of S concentrations in microlite-poor matrix glass from Hunga.
From: Low sulfur emissions from 2022 Hunga eruption due to seawater–magma interactions
a, Subaerial samples covering the whole 2022 Hunga eruptive stages (n = 1,112). b, Submarine samples (n = 168). Kernel density estimate (KDE) curves are shown. Below detection limit (~30 ppm S) concentrations were found for 186 analyses in a and for 30 in b.
