The geophysical techniques scientists are using to take the pulse of Svartsengi\u2019s magmatic heart aren\u2019t just tracking the hazard in real time. They\u2019re also helping to construct a picture of the arteries that funnel all that magma to the surface \u2014 which is crucial for understanding the entire peninsula and how it might behave on longer time frames.<\/p>\n

Fagradalsfjall and Svartsengi \u2014 the two currently active volcanic systems \u2014 are separated by just a few miles. Despite their proximity, geologic evidence strongly suggests that they are distinct systems. Their subterranean architectures are manifestly different. At Fagradalsfjall, magma rushes from the mantle straight to the surface, while at Svartsengi, it\u2019s temporarily stored in the shallow crust.<\/p>\n

And yet, puzzlingly, the two systems seem to draw material from the same source in Earth\u2019s mantle, suggesting a deep connection.<\/p>\n