Magmatic and Tectonic Domains of Central Costa Rica and the Irazú‐Turrialba Volcanic Complex Revealed by Ambient Noise Tomography

A shared magma reservoir at 5–7 km depth beneath the Irazú-Turrialba Volcanic Complex, fed by a sub-vertical conduit from at least 12 km depth, has been revealed through ambient noise tomography. This study provides new insights into the plumbing system of one of Central America's most active volcanic twin systems, located at the transition between the Central American Volcanic Arc and the Talamanca Cordillera. Researchers deployed a temporary seismic network to analyze Rayleigh wave group-velocity dispersion curves, uncovering distinct magmatic reservoirs beneath each volcanic edifice. The findings enhance understanding of the spatial relationship between tectonic features and magma distribution in this critical geological region.

Jiwani‐Brown, E. A., Planès, T., Pacheco, J. F., Mora, M. M., & Lupi, M. (2022). Magmatic and Tectonic Domains of Central Costa Rica and the Irazú‐Turrialba Volcanic Complex Revealed by Ambient Noise Tomography. Journal of Geophysical Research: Solid Earth, 127(11). Portico. https://doi.org/10.1029/2022jb024575