Infrasound from the 2007 fissure eruptions of Kīlauea Volcano, Hawai'i

Geophysical Research Letters
By: , and 

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Abstract

Varied acoustic signals were recorded at Kīlauea Volcano in mid-2007, coincident with dramatic changes in the volcano's activity. Prior to this time period, Pu'u 'Ō'ō crater produced near-continuous infrasonic tremor and was the primary source of degassing and lava effusion at Kīlauea. Collapse and draining of Pu'u 'Ō'ō crater in mid-June produced impulsive infrasonic signals and fluctuations in infrasonic tremor. Fissure eruptions on 19 June and 21 July were clearly located spatially and temporally using infrasound arrays. The 19 June eruption from a fissure approximately mid-way between Kīlauea's summit and Pu'u 'O'o produced infrasound for ~30 minutes-the only observed geophysical signal associated with the fissure opening. The infrasound signal from the 21 July eruption just east of Pu'u 'Ō'ō shows a clear azimuthal progression over time, indicative of fissure propagation over 12.9 hours. The total fissure propagation rate is relatively slow at 164 m/hr, although the fissure system ruptured discontinuously. Individual fissure rupture times are estimated using the acoustic data combined with visual observations.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Infrasound from the 2007 fissure eruptions of Kīlauea Volcano, Hawai'i
Series title Geophysical Research Letters
DOI 10.1029/2010GL046422
Volume 38
Year Published 2011
Language English
Contributing office(s) Hawaiian Volcano Observatory
Description 5 p.; L06309
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Geophysical Research Letters
Country United States
State Hawai'i
Other Geospatial Kilauea Volcano