{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1363951795476129792.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1002/2016ja023382"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2016JA023382"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/2016JA023382"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/full-xml/10.1002/2016JA023382"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2016JA023382"}}],"dc:title":[{"@value":"Ionospheric detection and localization of volcano eruptions on the example of the April 2015 Calbuco events"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>Using data from ground‐based Global Navigation Satellite Systems (GNSS) receivers located in southern Chile, we study the ionospheric total electron content (TEC) response to two eruptions of the Calbuco volcano that occurred on 22–23 April 2015. In both cases, the TEC response showed quasi‐periodic signals with several consecutive wave trains. The averaged amplitude of the observed covolcanic TEC perturbations amounted 0.45 total electron content unit, 1 TECU = 10<jats:sup>16</jats:sup> el m<jats:sup>−2</jats:sup> (TECU) for the first eruption and 0.16 TECU for the second one. We compare amplitudes of the TEC response to volcano eruptions of different intensity from our and previously published data, and we show that both the intensity and the background ionospheric conditions define the amplitude of ionospheric covolcanic disturbances. The relative contribution, however, scales with the eruption intensity. The traveltime diagrams allowed to estimate the propagation speed of the observed covolcanic TEC perturbations as ~900–1200 m/s, which is close to the acoustic (or shock acoustic) waves speed at the ionospheric height. The spectrograms are consistent with the conclusion on the acoustic nature of the observed TEC perturbations. Finally, we use the approximation of a spherical wave propagating at a constant velocity from a point source, and for the first time, we calculate the location of the volcanic source and the onset time of the volcano eruption from ionospheric measurements. We show that even from 30 s ionospheric GPS data it is possible to “localize” the eruptive source within several degrees of latitude/longitude.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383951795476129794","@type":"Researcher","foaf:name":[{"@value":"Ksenia Shults"}],"jpcoar:affiliationName":[{"@value":"Institut de Physique du Globe de Paris, Paris Sorbonne Cité, Univ. Paris Diderot  Paris France"}]},{"@id":"https://cir.nii.ac.jp/crid/1383951795476129793","@type":"Researcher","foaf:name":[{"@value":"Elvira Astafyeva"}],"jpcoar:affiliationName":[{"@value":"Institut de Physique du Globe de Paris, Paris Sorbonne Cité, Univ. Paris Diderot  Paris France"}]},{"@id":"https://cir.nii.ac.jp/crid/1383951795476129792","@type":"Researcher","foaf:name":[{"@value":"Sévan Adourian"}],"jpcoar:affiliationName":[{"@value":"Ecole Normale Supérieure  Paris France"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"21699380"},{"@type":"EISSN","@value":"21699402"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Space Physics"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2016-10","prism:volume":"121","prism:number":"10","prism:startingPage":"10303"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2016JA023382"},{"@id":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/2016JA023382"},{"@id":"https://onlinelibrary.wiley.com/doi/full-xml/10.1002/2016JA023382"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2016JA023382"}],"createdAt":"2016-10-07","modifiedAt":"2025-07-24","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050306506449559808","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Atmospheric resonant oscillations by the 2022 January 15 eruption of the Hunga Tonga–Hunga Ha'apai volcano from GNSS-TEC observations"}]},{"@id":"https://cir.nii.ac.jp/crid/1050587981426913664","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Ionospheric signatures of repeated passages of atmospheric waves by the 2022 Jan. 15 Hunga Tonga-Hunga Ha’apai eruption detected by QZSS-TEC observations in Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360290617844409216","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Investigation of Ionospheric Response to June 2009 Sarychev Peak Volcano Eruption"}]},{"@id":"https://cir.nii.ac.jp/crid/1360572092856935424","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Harmonic ionospheric oscillation by the 2010 eruption of the Merapi volcano, Indonesia, and the relevance of its amplitude to the mass eruption rate"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584340697771648","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"On the role of volcanic plume heights in excitation of free oscillations of the solid Earth and atmosphere: Case study"}]},{"@id":"https://cir.nii.ac.jp/crid/1360861705562167040","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Magnetic Signatures of the 15 January 2022 Hunga Tonga–Hunga Ha'apai Volcanic Eruption"}]},{"@id":"https://cir.nii.ac.jp/crid/1360865815491504384","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"New aspects of the upper atmospheric disturbances caused by the explosive eruption of the 2022 Hunga Tonga–Hunga Ha’apai volcano"}]},{"@id":"https://cir.nii.ac.jp/crid/2050588892108509184","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Electromagnetic conjugacy of ionospheric disturbances after the 2022 Hunga Tonga-Hunga Ha'apai volcanic eruption as seen in GNSS-TEC and SuperDARN Hokkaido pair of radars observations"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1002/2016ja023382"},{"@type":"CROSSREF","@value":"10.1186/s40623-022-01665-8_references_DOI_EEqlh2C7yz5bTmZad4qVVblk2Z7"},{"@type":"CROSSREF","@value":"10.1186/s40623-022-01674-7_references_DOI_EEqlh2C7yz5bTmZad4qVVblk2Z7"},{"@type":"CROSSREF","@value":"10.3390/rs13040638_references_DOI_EEqlh2C7yz5bTmZad4qVVblk2Z7"},{"@type":"CROSSREF","@value":"10.1093/gji/ggae023_references_DOI_EEqlh2C7yz5bTmZad4qVVblk2Z7"},{"@type":"CROSSREF","@value":"10.1016/j.jvolgeores.2020.107047_references_DOI_EEqlh2C7yz5bTmZad4qVVblk2Z7"},{"@type":"CROSSREF","@value":"10.1016/j.asr.2024.01.001_references_DOI_EEqlh2C7yz5bTmZad4qVVblk2Z7"},{"@type":"CROSSREF","@value":"10.1029/2022gl098454_references_DOI_EEqlh2C7yz5bTmZad4qVVblk2Z7"},{"@type":"CROSSREF","@value":"10.1186/s40623-023-01930-4_references_DOI_EEqlh2C7yz5bTmZad4qVVblk2Z7"}]}