{"created":"2023-03-31T02:11:42.538621+00:00","id":5062,"links":{},"metadata":{"_buckets":{"deposit":"e40f02f2-8b6a-4181-b82a-091b9e23b8ee"},"_deposit":{"id":"5062","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"5062"},"status":"published"},"_oai":{"id":"oai:nied-repo.bosai.go.jp:00005062","sets":[]},"author_link":[],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2017-03"},"bibliographicIssueNumber":"1","bibliographicPageStart":"38","bibliographicVolumeNumber":"69","bibliographic_titles":[{"bibliographic_title":"EARTH PLANETS AND SPACE","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"An M 6.8 (Mw 6.5) deep-focus earthquake occurred beneath the Bonin Islands at 21: 18 (JST) on June 23, 2015. Observed high-frequency (> 1 Hz) seismograms across Japan, which contain several sets of P- and S-wave arrivals for the 10 min after the origin time, indicate that moderate-to-large earthquakes occurred sequentially around Japan. Snapshots of the seismic energy propagation illustrate that after one deep-focus earthquake occurred beneath the Sea of Japan, two deep-focus earthquakes occurred sequentially after the first (Mw 6.5) event beneath the Bonin Islands in the next 4 min. The United States Geological Survey catalog includes three Bonin deep-focus earthquakes with similar hypocenter locations, but their estimated magnitudes are inconsistent with seismograms from across Japan. The maximum-amplitude patterns of the latter two earthquakes were similar to that of the first Bonin earthquake, which indicates similar locations and mechanisms. Furthermore, based on the ratios of the S-wave amplitudes to that of the first event, the magnitudes of the latter events are estimated as M 6.5 +/- 0.02 and M 5.8 +/- 0.02, respectively. Three magnitude-6-class earthquakes occurred sequentially within 4 min in the Pacific slab at 480 km depth, where complex heterogeneities exist within the slab.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"SPRINGER HEIDELBERG","subitem_publisher_language":"en"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1186/s40623-017-0625-3"}}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1880-5981","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Shunsuke Takemura","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Tatsuhiko Saito","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Katsuhiko Shiomi","creatorNameLang":"en"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_title":"Sequence of deep-focus earthquakes beneath the Bonin Islands identified by the NIED nationwide dense seismic networks Hi-net and F-net","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Sequence of deep-focus earthquakes beneath the Bonin Islands identified by the NIED nationwide dense seismic networks Hi-net and F-net","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"1","path":["1670839190650"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-03-30"},"publish_date":"2023-03-30","publish_status":"0","recid":"5062","relation_version_is_last":true,"title":["Sequence of deep-focus earthquakes beneath the Bonin Islands identified by the NIED nationwide dense seismic networks Hi-net and F-net"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-03-31T02:11:44.288557+00:00"}