Infrasound tornillos produced by Volcán Cotopaxi's deep crater

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dc.careerEscuela de Ingeniería Civiles
dc.category.authorprincipales
dc.contributor.authorOrtiz Erazo, Hugo David
dc.contributor.correspondingOrtiz Erazo, Hugo Davides
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.es
dc.facultyIngenieríaes
dc.id.author1002969929es
dc.id.type1es
dc.identifier.doihttps://doi.org/10.1029/2018GL077766es
dc.identifier.issn0094-8276
dc.identifier.urihttps://agupubs.onlinelibrary.wiley.com/doi/10.1029/2018GL077766es
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/4413
dc.indexed.databaseScimago Journal Rankes
dc.list.authorsJohnson, J., Ruiz, M., Ortiz, H., Watson, L., Viracucha, G., Ramon, P., & Almeida, M.es
dc.magazine.pageRange5436-5444es
dc.magazine.titleGeophysical Research Letterses
dc.magazine.volumeChapter45es
dc.rightsOpenAccesses
dc.statepublishedes
dc.subjectInfrasonidoes
dc.subjectVolcaneses
dc.titleInfrasound tornillos produced by Volcán Cotopaxi's deep crateres
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