Item talk:Q259595
From geokb
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"name": "UAS-Based Observations of Infrasound Directionality at Stromboli Volcano, Italy",
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"value": "10.1029/2023GL102905",
"url": "https://doi.org/10.1029/2023GL102905"
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"name": "Geophysical Research Letters",
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"datePublished": "2023",
"dateModified": "2023-04-17",
"abstract": "Infrasound (low frequency sound waves) can be used to monitor and characterize volcanic eruptions. However, infrasound sensors are usually placed on the ground, thus providing a limited sampling of the acoustic radiation pattern that can bias source size estimates. We present observations of explosive eruptions from a novel uncrewed aircraft system (UAS)-based infrasound sensor platform that was strategically hovered near the active vents of Stromboli volcano, Italy. We captured eruption infrasound from short-duration explosions and jetting events. While potential vertical directionality was inconclusive for the short-duration explosion, we find that jetting events exhibit vertical sound directionality that was observed with a\u00a0UAS close to vertical. This directionality would not have been observed using only traditional deployments of ground-based infrasound sensors, but is consistent with jet noise theory. This proof-of-concept study provides unique information that can improve our ability to characterize and quantify the directionality of volcanic eruptions and their associated hazards.",
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"name": "University of Alaska Fairbanks, Fairbanks, Alaska, UNITED STATES"
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