Speaker
Description
With the installation and certification of the International Monitoring System (IMS) station IS42 in 2011, the Azores archipelago became an infrasound sentinel of the North Atlantic Ocean. After more than a decade of detecting global infrasound activity including microbaroms, Atlantic storms, man-made activities, bolides, earthquakes and far-field volcanic eruptions, a second infrasound array was installed in the Azores to monitor local seismo-volcanic activity. On March 19th, 2022, a volcanic unrest on São Jorge Island triggered the deployment in two weeks of a four-element low-cost portable infrasound array (SJ1), in collaboration with the University of Florence. The results from this experience confirmed the need to improve the infrasound coverage of the Azores, towards a better monitoring of local and regional seismo-volcanic activity, as planned before. In 2023-24, a six-element low-cost infrasound portable array (TER) was designed and assembled, having been deployed in April 2024 on Terceira Island to monitor a local ongoing seismo-volcanic crisis.
A roadmap to design, assemble and deploy a six-element low-cost infrasound portable array on Faial Island (FAY) already started. We also present a project's rationale to deploy an array in Santa Maria Island with four absolute pressure sensors to cover also São Miguel Island.
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