Infrasound tornillos produced by Volcán Cotopaxi's deep crater

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dc.careerEscuela de Ingeniería Civiles
dc.category.authorprincipalen_US
dc.contributor.authorOrtiz Erazo, Hugo David
dc.contributor.correspondingOrtiz Erazo, Hugo David
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:30:19Z
dc.date.available2023-11-04T21:30:19Z
dc.date.issued2018-06
dc.dedication.authorTCes
dc.description.abstractWe characterize and interpret a new type of infrasound signal originating from the summit of Volcán Cotopaxi (Ecuador) that was primarily observed between September 2015 and March 2016, following the 2015 eruptive period. This infrasound waveform is a slowly decaying sinusoid with exceptional low-frequency (fp = 0.2 Hz) and high quality factor (Q = ~10) and resembles the shape of tornillo seismic waveforms. The repeating events, occurring about once per day in early 2016, are stable in frequency content, and we attribute them to excitation of a vertical-walled crater, with radius of about 125 m and length of 300 m. Spectral properties of the tornillo permit constraints on crater sound speed (335 m/s ± 6%) and temperature (4–32°C). The initial polarity of the tornillos is predominantly a rarefaction and could reflect repeating crater bottom collapse events (implosions) or explosion sources whose infrasound is heavily modulated by the crater's pipe-like geometry.en_US
dc.facultyIngenieríaes
dc.id.author1002969929
dc.id.type1
dc.identifier.doihttps://doi.org/10.1029/2018GL077766
dc.identifier.issn0094-8276
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/4413
dc.identifier.urihttps://agupubs.onlinelibrary.wiley.com/doi/10.1029/2018GL077766
dc.indexed.databaseScimago Journal Rankes
dc.language.isoes
dc.list.authorsJohnson, J., Ruiz, M., Ortiz, H., Watson, L., Viracucha, G., Ramon, P., & Almeida, M.
dc.magazine.pageRange5436-5444
dc.magazine.titleGeophysical Research Lettersen_US
dc.magazine.volumeChapter45
dc.rightsOpenAccessen
dc.statepublisheden_US
dc.subjectInfrasonidoes
dc.subjectVolcaneses
dc.subjectInfrasonido
dc.subjectVolcanes
dc.titleInfrasound tornillos produced by Volcán Cotopaxi's deep crateres
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