# Infrasound Array Dataset of the 2021 Eruptive Paroxysms of Etna Volcano

## TL;DR

This paper presents the first open-access dataset of infrasound recordings from Etna Volcano's 2021 eruptions, supporting volcano monitoring and early warning systems.

## Contribution

The study introduces the first publicly available infrasound array dataset from Etna Volcano during a period of intense eruptive activity.

## Key findings

- The dataset captured 39 eruptions, detecting all events and tracking their progression.
- The infrasound array successfully distinguished activity from multiple vents.
- The dataset supports future research and training in volcano monitoring.

## Abstract

Infrasound is a valuable tool for volcano monitoring that can offer critical insights into volcanic processes, unrest and eruption. Over the last two decades, studies have shown the benefits of using local infrasound arrays - clusters of sensors near active vents - for real-time detection, tracking, and quantifying eruption intensity. This work introduces the first open-access dataset of infrasound array waveforms recorded at Mt. Etna, Italy, from May to October 2021 during intense eruptive activity. The 6-element array was installed at Monte Conca, near a permanent seismic station operated by the Istituto di Geofisica e Vulcanologia - Osservatorio Etneo, at about 6 km from the South-East Crater. The continuous monitoring captured 39 eruptions, successfully detecting all events, tracking their progression, and distinguishing activity from multiple vents. This manuscript details the array setup and summarizes volcanic activity during deployment, supporting future research and monitoring efforts. The dataset aims to aid development of early warning systems and serves as a valuable training tool for early-career scientists in the fields of volcano monitoring.