{"_buckets": {"deposit": "b06d1e4c-cfd8-491b-b393-5c6eeca9df59"}, "_deposit": {"id": "3066", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "3066"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00003066", "sets": []}, "author_link": [], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2014", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "1", "bibliographicVolumeNumber": "66", "bibliographic_titles": [{"bibliographic_title": "Earth, Planets and Space", "bibliographic_titleLang": "en"}]}]}, "item_10001_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "Three large bathymetric highs (from north to south: the Amami Plateau, the Daito Ridge, and the Oki-Daito Ridge) originating from paleo-island arcs characterize the northwestern end of the Philippine Sea plate. We obtained 10 seismic refraction and multi-channel seismic reflection profiles across and along these bathymetric highs and obtained P wave velocity (Vp) models of the crust and the uppermost mantle. Although there are large variations in the crustal structure throughout this region, these bathymetric highs usually have a middle crust with Vp of 6.3 to 6.8 km/s, a lower crust with Vp of 6.8 to 7.2 km/s, a Pn velocity of 7.6 to 7.8 km/s, and a total crustal thickness of 15 to 25 km. These features are similar to those of the Izu-Ogasawara (Bonin)-Mariana island arc and the Kyushu-Palau Ridge, which are immature paleo-island arcs. However, the crust at the southwestern part of the Oki-Daito Ridge contains a relatively thin middle crust and a smaller total crustal thickness compared with other ridges in this region. In addition, we identified a deep reflector beneath the ridge, with these properties indicating a different origin, such as intraplate volcanism. © 2014 Nishizawa et al.; licensee Springer.", "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": "10.1186/1880-5981-66-25"}}]}, "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": "Katagiri, Y.", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Oikawa, M.", "creatorNameLang": "en"}]}]}, "item_title": "Wide-angle refraction experiments in the daito ridges region at the northwestern end of the philippine sea plate", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Wide-angle refraction experiments in the daito ridges region at the northwestern end of the philippine sea plate", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "1", "path": ["1670839190650"], "permalink_uri": "https://nied-repo.bosai.go.jp/records/3066", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-04-27"}, "publish_date": "2023-04-27", "publish_status": "0", "recid": "3066", "relation": {}, "relation_version_is_last": true, "title": ["Wide-angle refraction experiments in the daito ridges region at the northwestern end of the philippine sea plate"], "weko_shared_id": -1}