Using infrasound waves to monitor tropospheric weather and crater morphology changes at Volcán Tungurahua, Ecuador

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dc.careerEscuela de Ciencias Biológicases
dc.category.authorprincipalen_US
dc.contributor.authorOrtiz Erazo, Hugo David
dc.contributor.correspondingOrtiz Erazo, Hugo David
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:41:25Z
dc.date.available2023-11-04T21:41:25Z
dc.date.issued2018-01-01
dc.dedication.authorTCes
dc.description.abstractWe use infrasound waves generated during eruptions of Volcán Tungurahua (Ecuador) to study both, changing atmospheric conditions and volcanic source characteristics. Analyzed infrasound data were recorded for a 32-month period by a five-station network located within 6.5 km from the vent. We use cross-network correlation to quantify the recurrent eruptive behavior of Tungurahua and results are corroborated by reports from the Ecuadorian monitoring agency. Cross-network lag times vary over short time periods (minutes to days) when vent location is stable and attribute these variations to changes in atmospheric structure. Assuming a fixed source location, we invert for average air temperatures and winds in Tungurahua's vicinity (< 6.5 km) and find evidence for diurnal and semidiurnal tropospheric tides. We also use cross-network correlation lag times to compute infrasound source positions with resolutions of ~ 11.6 m, taking into account coarse NOAA atmospheric models for local winds and temperatures. Variable infrasound-derived source locations suggest source migration during the 32 months of analyzed data. Such source position variability is expected following energetic eruptions that destructively altered the crater/vent morphology as confirmed by imagery obtained during regular overflights.en_US
dc.facultyCiencias Exactas y Naturaleses
dc.id.author1002969929
dc.id.type1
dc.identifier.doi/doi.org/10.1016/j.jvolgeores.2017.11.001
dc.identifier.issn0377-0273
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/5883
dc.identifier.urihttps://www.sciencedirect.com/science/article/abs/pii/S0377027317303190
dc.indexed.databaseScimago Journal Rankes
dc.language.isoes
dc.list.authorsOrtiz, H., Johnson, J., Ramón, P. y Ruiz, M.
dc.magazine.pageRange205-216
dc.magazine.titleJournal of Volcanology and Geothermal Researchen_US
dc.magazine.volumeChapter349
dc.rightsOpenAccessen
dc.statepublisheden_US
dc.subjectVolcaneses
dc.subjectClimaes
dc.subjectEcuadores
dc.subjectVolcanes
dc.subjectClima
dc.subjectEcuador
dc.titleUsing infrasound waves to monitor tropospheric weather and crater morphology changes at Volcán Tungurahua, Ecuadores
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