{"created":"2023-03-30T09:24:54.903247+00:00","id":3092,"links":{},"metadata":{"_buckets":{"deposit":"644e9e93-7814-437f-973f-ec3e08dcdd47"},"_deposit":{"id":"3092","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"3092"},"status":"published"},"_oai":{"id":"oai:nied-repo.bosai.go.jp:00003092","sets":[]},"author_link":[],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicVolumeNumber":"68","bibliographic_titles":[{"bibliographic_title":"Earth, Planets and Space","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"© 2016 Nishizawa et al. We acquired 27 wide-angle seismic profles to investigate variation in crustal structure along the Kyushu-Palau Ridge (KPR), a 2600-km-long remnant island arc in the center of the Philippine Sea plate; 26 lines were shot across the strike of the KPR at 13°-31°N, and one was shot along the northernmost KPR. The derived P-wave velocity (Vp) models show that the KPR has a crustal thickness of 8-23 km, which is thicker than the neighboring backarc basin oceanic crusts of the West Philippine Basin to the west and the Shikoku and Parece Vela Basins to the east. While the KPR crust consists mainly of lower crusts with a Vp of 6.8-7.2 km/s, the thicker crust contains a thick middle crust with Vp of 6.0-6.8 km/s. In general, the KPR crust is thicker in the north than in the south. The uppermost mantle velocities just below the KPR bathymetric highs are lower than 8.0 km/s and are commonly associated with a slightly high Vp of 7.2 km/s at the base of the crust. Large amplitude refection signals are sometimes observed at far ofsets on several lines suggesting the existence of several refectors at depths of 23-40 km in the mantle beneath the KPR. The characteristics of these refections are similar to these observed beneath the Izu-Ogasawara (Bonin) island arc, the tectonically conjugate arc of the KPR before backarc basin spreading. Very thin crust and high Pn velocities characterize the transition between the KPR and the eastern basins, which is probably a relic of the initial stage of the rifting. West of the KPR, the crust varies in structure from north to south as a result of the diferent tectonic settings in which it evolved.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1186/s40623-016-0407-3"}}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1880-5981","subitem_source_identifier_type":"EISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Nishizawa, A.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kaneda, K.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Oikawa, M.","creatorNameLang":"en"}]}]},"item_title":"Crust and uppermost mantle structure of the Kyushu-Palau ridge, remnant arc on the Philippine Sea plate","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Crust and uppermost mantle structure of the Kyushu-Palau ridge, remnant arc on the Philippine Sea plate","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"1","path":["1670839190650"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-04-27"},"publish_date":"2023-04-27","publish_status":"0","recid":"3092","relation_version_is_last":true,"title":["Crust and uppermost mantle structure of the Kyushu-Palau ridge, remnant arc on the Philippine Sea plate"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-04-27T05:16:05.291353+00:00"}