Hydroacoustic sensing of seismic events during the Tajogaite volcanic eruption (La Palma, Spain) DOI Creative Commons

Jesús Alcázar-Treviño,

Guillermo Lara,

Eduardo Diaz Suarez

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 3, 2025

Abstract Volcanic processes generate a variety of seismic events that can be detected by both on-land and underwater sensors. During the 2021 subaerial eruption Tajogaite volcano on La Palma Island (Canary Islands, NW Africa), an acoustic sensor was strategically deployed to monitor activity. This study presents marine passive monitoring data from moored hydrophone offshore at depth 77 m 7 km volcanic vent, during after eruption. We compare recordings with island’s network earthquake database Instituto Geográfico Nacional (IGN). By calculating metrics analyzing low-frequency bands (< 100 Hz), we identified 712 impulsive signals consistent recorded in catalogue. These were double-pulsed, (≤ 50 Hz peak frequencies ≤ 15 Hz) exhibited sound levels well correlated magnitudes. Our findings demonstrate shallow-water hydro-acoustics detect estimate magnitude volcano-tectonic earthquakes studied scenario. results encourage for integration hydro-acoustic conjunction stations enhance overall investigated area

Language: Английский

Hydroacoustic sensing of seismic events during the Tajogaite volcanic eruption (La Palma, Spain) DOI Creative Commons

Jesús Alcázar-Treviño,

Guillermo Lara,

Eduardo Diaz Suarez

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 3, 2025

Abstract Volcanic processes generate a variety of seismic events that can be detected by both on-land and underwater sensors. During the 2021 subaerial eruption Tajogaite volcano on La Palma Island (Canary Islands, NW Africa), an acoustic sensor was strategically deployed to monitor activity. This study presents marine passive monitoring data from moored hydrophone offshore at depth 77 m 7 km volcanic vent, during after eruption. We compare recordings with island’s network earthquake database Instituto Geográfico Nacional (IGN). By calculating metrics analyzing low-frequency bands (< 100 Hz), we identified 712 impulsive signals consistent recorded in catalogue. These were double-pulsed, (≤ 50 Hz peak frequencies ≤ 15 Hz) exhibited sound levels well correlated magnitudes. Our findings demonstrate shallow-water hydro-acoustics detect estimate magnitude volcano-tectonic earthquakes studied scenario. results encourage for integration hydro-acoustic conjunction stations enhance overall investigated area

Language: Английский

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