{"created":"2023-07-25T09:58:54.707987+00:00","id":2091,"links":{},"metadata":{"_buckets":{"deposit":"805d4f0f-f13e-4b44-abe1-25541317d7cd"},"_deposit":{"created_by":15,"id":"2091","owners":[15],"pid":{"revision_id":0,"type":"depid","value":"2091"},"status":"published"},"_oai":{"id":"oai:oacis.repo.nii.ac.jp:00002091","sets":["187:189:313","187:189:491","187:189:492","41:493","70:494"]},"author_link":["3317","3318","2068","3316"],"item_3_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2020-03-31","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicVolumeNumber":"72","bibliographic_titles":[{"bibliographic_title":"Earth, Planets and Space"}]}]},"item_3_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"We have explored tsunami current signals in maritime Automatic Identification System (AIS) data during the 2011 Tohoku, Japan, tsunami. The AIS data were investigated in detail taking into account ship motion and response to tsunami current. Ship velocity derived from AIS data was divided into two components in terms of the ship heading: heading-normal and heading-parallel directions. The heading-normal velocity showed good agreement with the simulated tsunami current, as mentioned in our former research. Here, we found the heading-normal velocity was contaminated by non-tsunami noises that were mostly related to the ship yaw motion around the pivot point. The noises due to the yaw motion were reasonably corrected in the heading-normal velocity. The corrected heading-normal velocity clearly showed better agreement with the simulated tsunami current. Although the heading-parallel velocity is basically the navigation speed, and is mostly controlled by ships’ captain, we could find the heading-parallel velocity was also drifted by tsunami currents. The corrected heading-normal velocity was still a ship response to the tsunami current. Based on an equation of a ship response to tsunami currents, we numerically estimated tsunami cur-rent from the corrected heading-normal velocity. We could find very slight improvements in estimating the tsunami currents, which indicated that this operation possibly worked as a secondary correction. Tsunami currents of tens of centimeters per second are expected to be suitably detected using AIS based on discussion on detection limit."}]},"item_3_description_63":{"attribute_name":"研究課題番号","attribute_value_mlt":[{"subitem_description":"18K04654"}]},"item_3_publisher_32":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Springer Nature"}]},"item_3_relation_11":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1186/s40623-020-01165-7","subitem_relation_type_select":"DOI"}}]},"item_3_relation_13":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"Publisher's Version/PDF"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1186/s40623-020-01165-7","subitem_relation_type_select":"DOI"}},{"subitem_relation_name":[{"subitem_relation_name_text":"KAKEN研究課題: 沖合を航行する船舶のAISデータを転用する巨大津波の流速の計測とリアルタイム予測"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://kaken.nii.ac.jp/ja/grant/KAKENHI-PROJECT-18K04654/","subitem_relation_type_select":"URI"}},{"subitem_relation_name":[{"subitem_relation_name_text":"研究代表者: 稲津大祐 (東京海洋大学)"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://nrid.nii.ac.jp/ja/nrid/1000030462170/","subitem_relation_type_select":"URI"}}]},"item_3_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1343-8832","subitem_source_identifier_type":"ISSN"}]},"item_3_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11211921","subitem_source_identifier_type":"NCID"}]},"item_3_subject_62":{"attribute_name":"件名","attribute_value_mlt":[{"subitem_subject":"科学研究費研究成果"}]},"item_3_subject_64":{"attribute_name":"科学研究費研究課題","attribute_value_mlt":[{"subitem_subject":"沖合を航行する船舶のAISデータを転用する巨大津波の流速の計測とリアルタイム予測"},{"subitem_subject":"Measuring mega-tsunami current using AIS data of offshore navigating ships, and its application to real-time tsunami forecast"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Inazu, Daisuke"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"Ikeya, Tsuyoshi"}],"nameIdentifiers":[{},{},{}]},{"creatorNames":[{"creatorName":"Iseki, Toshio"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"Waseda, Takuji"}],"nameIdentifiers":[{}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Tsunami current","subitem_subject_scheme":"Other"},{"subitem_subject":"Automatic Identification System","subitem_subject_scheme":"Other"},{"subitem_subject":"Course over ground","subitem_subject_scheme":"Other"},{"subitem_subject":"Heading","subitem_subject_scheme":"Other"},{"subitem_subject":"Rate of turn","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article"}]},"item_title":"Extracting clearer tsunami currents from shipborne Automatic Identification System data using ship yaw and equation of ship response","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Extracting clearer tsunami currents from shipborne Automatic Identification System data using ship yaw and equation of ship response"}]},"item_type_id":"3","owner":"15","path":["313","491","492","493","494"],"pubdate":{"attribute_name":"公開日","attribute_value":"2021-05-10"},"publish_date":"2021-05-10","publish_status":"0","recid":"2091","relation_version_is_last":true,"title":["Extracting clearer tsunami currents from shipborne Automatic Identification System data using ship yaw and equation of ship response"],"weko_creator_id":"15","weko_shared_id":-1},"updated":"2023-07-25T10:36:33.009754+00:00"}