{"@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/1363670321145538176.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/97gl03492"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F97GL03492"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/97GL03492"}}],"dc:title":[{"@value":"Seismic channel waves in the accretionary prism of the Middle America Trench"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>A visual examination of seismograms of earthquakes located near the Middle America Trench and recorded on VBB seismographs along the Pacific coast of Mexico, when bandpass filtered between 6 and 30 s, shows the presence of two types of waves. The first is a short pulse and the second is a dispersed wavetrain. The first type of wave is quickly attenuated, while the second type propagates without significant attenuation. We applied a frequency‐time analysis to identify the nature of these waves. A comparison of period‐group velocity diagrams for signals recorded on different stations shows that the first arrival is a Rayleigh wave propagating in the continental plate, while the second one propagates along the trench in the thickened sediment wedge of the accretionary prism. We have also measured group velocities of Rayleigh wave propagating in the Cocos plate far from the coast. At periods between 15 and 20 s, the group velocities of the wave propagating along the trench are lower than the velocity of Rayleigh waves propagating in adjacent continental and oceanic plates. We conclude that the dispersed wavetrain observed near the coast is a wave trapped in a channel formed by low‐velocity sediments of the accretionary prism.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380017279838007555","@type":"Researcher","foaf:name":[{"@value":"N. M. Shapiro"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670321145538176","@type":"Researcher","foaf:name":[{"@value":"M. Campillo"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670321145538177","@type":"Researcher","foaf:name":[{"@value":"S. K. Singh"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670321145538178","@type":"Researcher","foaf:name":[{"@value":"J. Pacheco"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00948276"},{"@type":"EISSN","@value":"19448007"}],"prism:publicationName":[{"@value":"Geophysical Research Letters"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"1998-01","prism:volume":"25","prism:number":"1","prism:startingPage":"101","prism:endingPage":"104"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F97GL03492"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/97GL03492"}],"createdAt":"2004-02-04","modifiedAt":"2024-12-15","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050852901088959616","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Centroid moment tensor inversions of offshore earthquakes using a three-dimensional velocity structure model: slip distributions on the plate boundary along the Nankai Trough"}]},{"@id":"https://cir.nii.ac.jp/crid/1360005518172926208","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Structural Characteristics of the Nankai Trough Shallow Plate Boundary Inferred From Shallow Very Low Frequency Earthquakes"}]},{"@id":"https://cir.nii.ac.jp/crid/1360017279838007552","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"High-frequency S and S-coda waves at ocean-bottom seismometers"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285706120541056","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Modeling of Long-Period Ground Motions in the Nankai Subduction Zone: Model Simulation Using the Accretionary Prism Derived from Oceanfloor Local S-Wave Velocity Structures"}]},{"@id":"https://cir.nii.ac.jp/crid/1360290617852195456","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Modelling high-frequency seismograms at ocean bottom seismometers: effects of heterogeneous structures on source parameter estimation for small offshore earthquakes and shallow low-frequency tremors"}]},{"@id":"https://cir.nii.ac.jp/crid/1360306905621680256","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Impact of the Offshore Seismograph Network and 3‐D Seismic Velocity Structure Model on Centroid Moment Tensor Analysis for Offshore Earthquakes: Application to the Japan Trench Subduction Zone"}]},{"@id":"https://cir.nii.ac.jp/crid/1390564238076151040","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"地震波解析と波動伝播計算に基づく地球内部の短波長不均質構造の研究"},{"@language":"en","@value":"Study of Small-scale Heterogeneities in the Earth Inferredfrom Analysis of Observed and Simulated Seismograms"},{"@language":"ja-Kana","@value":"ジシンハ カイセキ ト ハドウ デンパ ケイサン ニ モトズク チキュウ ナイブ ノ タンハチョウ フキンシツ コウゾウ ノ ケンキュウ"}]},{"@id":"https://cir.nii.ac.jp/crid/2051433317038653440","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"CMT inversion for small-to-moderate earthquakes applying to dense short-period OBS array at off Ibaraki region"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/97gl03492"},{"@type":"CROSSREF","@value":"10.1029/2019gl082448_references_DOI_NZXa1YiXEv2jptmFesIscdcw9PP"},{"@type":"CROSSREF","@value":"10.1093/gji/ggaa238_references_DOI_NZXa1YiXEv2jptmFesIscdcw9PP"},{"@type":"CROSSREF","@value":"10.1186/s40623-023-01778-8_references_DOI_NZXa1YiXEv2jptmFesIscdcw9PP"},{"@type":"CROSSREF","@value":"10.1186/s40623-022-01721-3_references_DOI_NZXa1YiXEv2jptmFesIscdcw9PP"},{"@type":"CROSSREF","@value":"10.1007/s00024-018-2013-8_references_DOI_NZXa1YiXEv2jptmFesIscdcw9PP"},{"@type":"CROSSREF","@value":"10.1093/gji/ggaa404_references_DOI_NZXa1YiXEv2jptmFesIscdcw9PP"},{"@type":"CROSSREF","@value":"10.1029/2024jb029944_references_DOI_NZXa1YiXEv2jptmFesIscdcw9PP"},{"@type":"CROSSREF","@value":"10.4294/zisin.2017-11_references_DOI_NZXa1YiXEv2jptmFesIscdcw9PP"}]}