Autocorrelation infrasound interferometry

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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.accessioned2023-11-04T21:44:43Z
dc.date.available2023-11-04T21:44:43Z
dc.date.issued2021-03-04
dc.dedication.authorTCes
dc.description.abstractSeismic and infrasound multistation ambient-noise interferometry has been widely used to infer ground and atmospheric properties, and single-station and autocorrelation seismic interferometry has also shown potential for characterizing Earth structure at multiple scales. We extend autocorrelation seismic interferometry to ambient atmospheric infrasound recordings that contain persistent local noise from waterfalls and rivers. Across a range of geographic settings, we retrieve relative sound-speed changes that exhibit clear diurnal oscillations consistent with temperature and wind variations. We estimate ambient air temperatures from variations in relative sound speeds. The frequency band from 1 to 2 Hz appears most suitable to retrieve weather parameters as nearby waterfalls and rivers may act as continuous and vigorous sources of infrasound that help achieve convergence of coherent phases in the autocorrelation codas. This frequency band is also appropriate for local sound-speed variations because it has infrasound with wavelengths of ∼170–340 m, corresponding to a typical atmospheric boundary layer height. After applying array analysis to autocorrelation functions derived from a three-element infrasound array, we find that autocorrelation codas are composed of waves reflected off nearby topographic features, such as caldera walls. Lastly, we demonstrate that autocorrelation infrasound interferometry offers the potential to study the atmosphere over at least several months and with a fine time resolution.en_US
dc.facultyIngenieríaes
dc.id.author1002969929
dc.id.type1
dc.identifier.doihttps://doi. org/10.1029/2020JB020513
dc.identifier.issn2169-9356
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/6046
dc.identifier.urihttps://escholarship.org/content/qt7085w8zc/qt7085w8zc_noSplash_3e1d365db1115dd123576fdaffaa96a1.pdf?t=qrif0q
dc.indexed.databaseScimago Journal Rankes
dc.language.isoen
dc.list.authorsOrtiz, H., Matoza, R., Johnson, J., Hernandez, S., Anzieta, J., y Ruiz, M.
dc.magazine.pageRange1-14
dc.magazine.titleJournal of Geophysical Research: Solid Earthen_US
dc.magazine.volumeChapter126
dc.rightsOpenAccessen
dc.statepublisheden_US
dc.subjectInterferometríaes
dc.subjectInfrasonidoes
dc.subjectAutocorrelaciónes
dc.subjectInterferometría
dc.subjectInfrasonido
dc.subjectAutocorrelación
dc.titleAutocorrelation infrasound interferometryen_US
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