Using infrasound waves to monitor tropospheric weather and crater morphology changes at Volcán Tungurahua, Ecuador
dc.career | Escuela de Ciencias Biológicas | es |
dc.category.author | principal | es |
dc.contributor.author | Ortiz Erazo, Hugo David | |
dc.contributor.corresponding | Ortiz Erazo, Hugo David | es |
dc.country | Ecuador | es |
dc.date.accessioned | 2023-11-04T21:41:25Z | |
dc.date.available | 2023-11-04T21:41:25Z | |
dc.date.issued | 2018-01-01 | |
dc.dedication.author | TC | es |
dc.description.abstract | We 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. | es |
dc.faculty | Ciencias Exactas y Naturales | es |
dc.id.author | 1002969929 | es |
dc.id.type | 1 | es |
dc.identifier.doi | /doi.org/10.1016/j.jvolgeores.2017.11.001 | es |
dc.identifier.issn | 0377-0273 | |
dc.identifier.uri | https://www.sciencedirect.com/science/article/abs/pii/S0377027317303190 | es |
dc.identifier.uri | https://repositorio.puce.edu.ec/handle/123456789/5883 | |
dc.indexed.database | Scimago Journal Rank | es |
dc.list.authors | Ortiz, H., Johnson, J., Ramón, P. y Ruiz, M. | es |
dc.magazine.pageRange | 205-216 | es |
dc.magazine.title | Journal of Volcanology and Geothermal Research | es |
dc.magazine.volumeChapter | 349 | es |
dc.rights | OpenAccess | es |
dc.state | published | es |
dc.subject | Volcanes | es |
dc.subject | Clima | es |
dc.subject | Ecuador | es |
dc.title | Using infrasound waves to monitor tropospheric weather and crater morphology changes at Volcán Tungurahua, Ecuador | es |
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