{"@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/1360004239487451392.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.3390/geosciences8020038"}},{"identifier":{"@type":"URI","@value":"https://www.mdpi.com/2076-3263/8/2/38/pdf"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Investigation of Preprocessing for Seismic Attenuation Profiling to Image the Earthquake Swarm Associated with the 2000 Eruption of the Miyakejima Volcano in Japan"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>By using profiling that focuses on seismic attenuation instead of reflectivity, we investigate geological structures in volcanic areas and fractured areas, where seismic reflections are difficult to observe. A previous study successfully visualized the hypocenter distribution of the earthquake swarm associated with the 2000 Miyakejima eruption from the seismic attenuation profile of a seismic line. However, any significant geologic features were not figured out on other nearby lines. In this paper, we re-evaluated our preprocessing of the seismic reflection data, which are the input for the seismic attenuation profiling method, with an eye toward improving frequency preservation. First, deconvolution was excluded from the preprocessing sequence, because it can potentially change the frequency content of seismic data. Second, a very small NMO stretching factor of 0.1, which does not allow reflections to stretch more than 10%, was adopted to minimize the frequency distortion by NMO correction. As a result, clear high-attenuation anomalies showed up on seismic attenuation profiles of the other nearby lines, which are consistent with typical geological features known in the study area: earthquake swarm and volcanic activity. This paper demonstrates that appropriate preprocessing was able to improve the accuracy of imaging geological structures by seismic attenuation profiling.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380004239487451521","@type":"Researcher","foaf:name":[{"@value":"Tetsuro Tsuru"}],"jpcoar:affiliationName":[{"@value":"Tokyo University of Marine Science and Technology, 5-7 Konan 4-chome, Minatoko-ku, Tokyo 108-8477, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004239487451522","@type":"Researcher","foaf:name":[{"@value":"Tetsuo No"}],"jpcoar:affiliationName":[{"@value":"Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Showa-machi 3173-25, Kanazawa-ku, Yokohama 236-0001, Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"20763263"}],"prism:publicationName":[{"@value":"Geosciences"}],"dc:publisher":[{"@value":"MDPI AG"}],"prism:publicationDate":"2018-01-23","prism:volume":"8","prism:number":"2","prism:startingPage":"38"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["https://creativecommons.org/licenses/by/4.0/"],"url":[{"@id":"https://www.mdpi.com/2076-3263/8/2/38/pdf"}],"createdAt":"2018-01-23","modifiedAt":"2025-10-11","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=earthquake%20swarm","dc:title":"earthquake swarm"},{"@id":"https://cir.nii.ac.jp/all?q=QE1-996.5","dc:title":"QE1-996.5"},{"@id":"https://cir.nii.ac.jp/all?q=seismic%20attenuation","dc:title":"seismic attenuation"},{"@id":"https://cir.nii.ac.jp/all?q=seismic%20attenuation;%20preprocessing;%20earthquake%20swarm;%20volcanic%20activity;%20Miyakejima","dc:title":"seismic attenuation; preprocessing; earthquake swarm; volcanic activity; Miyakejima"},{"@id":"https://cir.nii.ac.jp/all?q=volcanic%20activity","dc:title":"volcanic activity"},{"@id":"https://cir.nii.ac.jp/all?q=Geology","dc:title":"Geology"},{"@id":"https://cir.nii.ac.jp/all?q=preprocessing","dc:title":"preprocessing"},{"@id":"https://cir.nii.ac.jp/all?q=Miyakejima","dc:title":"Miyakejima"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040282257416516864","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"15H05717"},{"@type":"JGN","@value":"JP15H05717"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15H05717/"}],"notation":[{"@language":"ja","@value":"プレート境界断層超深度掘削・観測による南海トラフ巨大地震切迫度評価"},{"@language":"en","@value":"Urgency Evaluation of the Nankai Great Earthquake and Tsunami by Scientific Ocean Drilling"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360001114007888000","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"THE DETERMINATION OF THE SEISMIC QUALITY FACTOR Q FROM VSP DATA: A COMPARISON OF DIFFERENT COMPUTATIONAL METHODS<sup>1</sup>"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011146204731904","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Wave attenuation in partially saturated rocks"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292620919385344","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Dike intrusion associated with the 2000 eruption of Miyakejima Volcano, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574096379479936","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Estimation of Q from surface seismic reflection data"}]},{"@id":"https://cir.nii.ac.jp/crid/1360845538937938432","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Q"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855571141227008","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Fault‐zone attenuation of high‐frequency seismic waves"}]},{"@id":"https://cir.nii.ac.jp/crid/1361981471401986816","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Evidence for subsurface magma bodies beneath Izu-Oshima volcano inferred from a seismic scattering analysis and possible interpretation of the magma plumbing system of the 1986 eruptive activity"}]},{"@id":"https://cir.nii.ac.jp/crid/1362544420268418560","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Seismicity and crustal structure related to the Miyake‐jima volcanic activity in 2000"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388843773365504","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Measurements of attenuation from vertical seismic profiles"}]},{"@id":"https://cir.nii.ac.jp/crid/1364233270023911680","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Earthquake swarms preceding the 2000 eruption of Miyakejima volcano, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1370004239487451523","@type":"Product","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Multichannel seismic reflection profile from south of the Izu Oshima"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204229942528","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Magma Migration from the Point of View of Seismic Activity in the Volcanism of Miyake-jima Island in 2000."},{"@value":"地震活動から見た三宅島２０００年噴火時のマグマの移動"},{"@language":"ja-Kana","@value":"ジシン カツドウ カラ ミタ ミヤケジマ 2000ネン フンカジ ノ マグマ ノ イドウ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679206647168","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"A History of Seismic Activity around Miyakejima, Kozushima and Niijima, the Northern Izu Islands."},{"@value":"三宅島，神津島，新島周辺の過去の地震活動"},{"@language":"ja-Kana","@value":"ミヤケジマ コウヅシマ ニイジマ シュウヘン ノ カコ ノ ジシン カツドウ"}]},{"@id":"https://cir.nii.ac.jp/crid/2051714791867582336","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Geophysical imaging of subsurface structures in volcanic area by seismic attenuation profiling"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.3390/geosciences8020038"},{"@type":"KAKEN","@value":"PRODUCT-22519952"},{"@type":"OPENAIRE","@value":"doi_dedup___::d1ad9e87e046024fa9bcb5e4713c9df4"}]}