{"created":"2023-05-15T12:10:11.101588+00:00","id":15836,"links":{},"metadata":{"_buckets":{"deposit":"f81f4379-d6c8-421b-8b89-a0923867c4ea"},"_deposit":{"created_by":19,"id":"15836","owners":[19],"pid":{"revision_id":0,"type":"depid","value":"15836"},"status":"published"},"_oai":{"id":"oai:iwate-u.repo.nii.ac.jp:00015836","sets":["1515:1519"]},"author_link":["95320","95319","95321","95322"],"item_16_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2020","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"167","bibliographicPageStart":"149","bibliographicVolumeNumber":"73","bibliographic_titles":[{"bibliographic_title":"物理探査"},{"bibliographic_title":"BUTSURI-TANSA","bibliographic_titleLang":"en"}]}]},"item_16_date_6":{"attribute_name":"登録日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2022-11-15"}]},"item_16_description_11":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"岩手県大船渡市の振動特性を明らかにするため，2003年5月26日に発生した宮城県沖地震（Mj 7.0）のアンケート震度調査を行った。震度の算出には太田ら（1998）の改訂版を用いた。大船渡市の小学校14校，中学校8校の生徒の両親に3,387枚のアンケートを配布した。アンケートから推定された震度は，震度の分布を明確にするために250m四方のメッシュで平均した。アンケート調査のための個人間の違いを避けるために，アンケートの数が3つ以上の有効メッシュを分析に使用した。大船渡市の有効メッシュ数は212であった。メッシュ震度は6.4～4.1の範囲で分布し，大船渡市の平均は5.1であった。大船渡市の平野部にあたる中心部では震度が大きく，周辺では震度が小さいことが判明した。2003年宮城県沖地震の強震動は振動特性が地下の地質構造に依存することを示した。\n大船渡市における区域ごとに震度の差異の原因を調べるために，市内14地点で，地震計間隔6mの４台の振動計からなる簡易微動アレイ観測を実施し，レイリー波位相速度分散曲線を求めた。長尾・紺野（2002）の簡便な方法で波長40mの時のレイリー波位相速度から深度30mまでの平均S波速度（AVS30）を換算し，平均S波速度分布を求め，アンケート震度との比較を行った。震度データベースを作成するための250mメッシュ平均震度とAVS30との相関係数は－0.68を示し，ある程度の相関が認められ，単純な解析である250mメッシュ平均震度でも平均S波速度からの揺れやすさとの対応を示すことが可能であった。また，大船渡では狭い地域で急に地質構造が変化するため，観測点を中心にした半径100mから500mの平均震度を算出し，その震度と平均S波速度（AVS10からAVS30）の相関を検討した。震度が大きな観測点でAVS30が小さく，震度の小さな観測点ではAVS30が大きくなる傾向が確認でき，その結果，半径250m平均震度とAVS30は強い負の相関（－0.82）を示すことが判明した。また，AVS30と同様にAVS20も相関係数が－0.81と高い値を示すことも明らかとなった。","subitem_description_type":"Abstract"}]},"item_16_description_12":{"attribute_name":"Abstract","attribute_value_mlt":[{"subitem_description":"To clarify the effect of surface geology on seismic motion in Ofunato City, Iwate Prefecture, a survey on detailed seismic intensity distribution was done using questionnaires for the off-Miyagi earthquake ( Mj 7.1 ) occurred at May 26, 2003. The questionnaire revised by Ohta et al.(1998) was used for 5 calculating seismic intensities. 3,387 questionnaires were distributed for parents of students of 14 elementary schools and 8 junior high schools in Ofunato City. The seismic intensities estimated from questionnaires were averaged for 250m square meshes to clarify the spatial variation of seismic intensities. To avoid differences among individuals for questionnaire survey, the effective meshes where the number of the questionnaire was more than three were used for analysis. The number of the 10 effective mesh was 212. The seismic intensities were ranging from 6.4 to 4.1, and the average was 5.1 in Ofunato City. It was revealed that the seismic intensity at the central area of Ofunato City was large, and the one around the area was small.\nIn order to clarify the difference of seismic intensities for each area in Ofunato City, we carried out conventional microtremor array observations at 14 sites. The array consists of four vertical 15 seismometers with an interval of 6 m. Phase velocities of Rayleigh waves were estimated from array records of vertical microtremors by spatial auto-correlation (SPAC) method. Average S-wave velocities (AVS) between a surface and 30 m depth were estimated from phase velocities of Rayleigh waves with a wavelength of 40 m by using empirical relations proposed by Nagao and Konno (2000). We compared to the estimated AVS distribution with the seismic intensity distribution. The correlation coefficient 20 between the seismic intensity averaged with a 250m mesh and AVS30 was -0.68. Because the geological structure changes abruptly in a small area in Ofunato City, we calculated the seismic intensities averaged from the observation point to a radius of 100 m to 500 m, and examined the correlation between the seismic intensities and the average S wave velocities (AVS10 to AVS30). It was revealed that the AVS was small at the area where the seismic intensity was large. As a result, it 25 was found that the correlation coefficient between the seismic intensity averaged with a radius of 250m and AVS30 was -0.82. It was also clarified that the correlation coefficient of AVS20 was -0.81 as well as the coefficient of AVS30.","subitem_description_type":"Other"}]},"item_16_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"95321","nameIdentifierScheme":"WEKO"}],"names":[{"name":"YAMAMOTO, Hidekazu"}]},{"nameIdentifiers":[{"nameIdentifier":"95322","nameIdentifierScheme":"WEKO"}],"names":[{"name":"SAITO, Tsuyoshi"}]}]},"item_16_link_13":{"attribute_name":"抄録（URL）","attribute_value_mlt":[{"subitem_link_text":"詳細震度分布と簡易微動アレイ探査による平均S波速度との関係：岩手県大船渡市における2003年宮城県沖の地震によるアンケート震度調査に基づいて","subitem_link_url":"https://www.jstage.jst.go.jp/article/segj/73/0/73_149/_article/-char/ja/"}]},"item_16_publisher_14":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"物理探査学会"}]},"item_16_relation_26":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.3124/segj.73.149","subitem_relation_type_select":"DOI"}}]},"item_16_rights_18":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"© 2020 物理探査学会"}]},"item_16_source_id_25":{"attribute_name":"NCID","attribute_value_mlt":[{"subitem_source_identifier":"AN10028069","subitem_source_identifier_type":"NCID"}]},"item_16_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"18814824","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"09127984","subitem_source_identifier_type":"ISSN"}]},"item_16_text_4":{"attribute_name":"著者(機関)","attribute_value_mlt":[{"subitem_text_value":"岩手大学理工学部"},{"subitem_text_value":"岩手大学理工学部"}]},"item_16_version_type_27":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"山本, 英和"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"齊藤, 剛"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2022-11-15"}],"displaytype":"detail","filename":"bt-v73p149-167.pdf","filesize":[{"value":"50.0 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"bt-v73p149-167","url":"https://iwate-u.repo.nii.ac.jp/record/15836/files/bt-v73p149-167.pdf"},"version_id":"ab95e489-a02e-45b1-b69e-c99357f37028"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"アンケート調査","subitem_subject_scheme":"Other"},{"subitem_subject":"震度","subitem_subject_scheme":"Other"},{"subitem_subject":"簡易微動アレイ探査","subitem_subject_scheme":"Other"},{"subitem_subject":"平均S波速度","subitem_subject_scheme":"Other"},{"subitem_subject":"半径平均震度","subitem_subject_scheme":"Other"},{"subitem_subject":"Questionnaire survey","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"seismic intensity","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"microtremor array survey","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"average S-wave velocity","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"seismic intensity averaged within a circle with a radius","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"詳細震度分布と簡易微動アレイ探査による平均S波速度との関係：岩手県大船渡市における2003年宮城県沖の地震によるアンケート震度調査に基づいて","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"詳細震度分布と簡易微動アレイ探査による平均S波速度との関係：岩手県大船渡市における2003年宮城県沖の地震によるアンケート震度調査に基づいて"},{"subitem_title":"Relationship between detailed seismic intensity distribution and averaged S wave velocities by a conventional microtremor array survey : Based on questionnaire survey of seismic intensity in Ofunato City, Iwate Prefecture, for the 2003 off-Miyagi earthquake (Mj7.1)","subitem_title_language":"en"}]},"item_type_id":"16","owner":"19","path":["1519"],"pubdate":{"attribute_name":"公開日","attribute_value":"2022-11-15"},"publish_date":"2022-11-15","publish_status":"0","recid":"15836","relation_version_is_last":true,"title":["詳細震度分布と簡易微動アレイ探査による平均S波速度との関係：岩手県大船渡市における2003年宮城県沖の地震によるアンケート震度調査に基づいて"],"weko_creator_id":"19","weko_shared_id":-1},"updated":"2023-05-15T12:46:30.125889+00:00"}