{"created":"2023-03-31T02:38:36.736657+00:00","id":5669,"links":{},"metadata":{"_buckets":{"deposit":"d9d9048b-60d3-444d-8877-a5f3b23a04e1"},"_deposit":{"id":"5669","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"5669"},"status":"published"},"_oai":{"id":"oai:nied-repo.bosai.go.jp:00005669","sets":[]},"author_link":[],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1996","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"117","bibliographicPageStart":"107","bibliographicVolumeNumber":"46","bibliographic_titles":[{"bibliographic_title":"気象研究所研究報告","bibliographic_titleLang":"ja"},{"bibliographic_title":"Papers in Meteorology and Geophysics","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"フィリピン海プレートの二つのモデルについて、3次元的な形状表現を得るとともに、有限要素法による変形、応力分布の解析を行った。<br> 先ず、プレートモデルの立体的形状を視覚的に捉えるために、ワイヤーフレームによる表現、アナグリフ方式 (赤青メガネ方式) による表現、陰影による表現、の3種類の表現方法を試み、それぞれの方法の特徴を比較するとともに、モデルによる形状の違いを検討した。次に、大陸プレート下に沈み込むフィリピン海プレートを模して、沈み込みの方向に圧縮されるようにモデルの一端に強制変位を与えて、その変形の様子を有限要素法により計算し、両モデルの変位分布、応力分布の特徴について比較するとともに、地震活動との対応について検討した。<br> 形状に関して、一方のモデルは南東から北西にかけて中央部が谷状になった構造を有しているが、他方のモデルでは中央部が東西両端より逆に盛り上がっており、北西端での潜り込みの角度が急である。二つのモデルの形状はかなり異なったものであるが、変形、応力分布には類似した特徴がみられる。その一つは、相模湾付近 (1923年関東地震の震源地付近) が顕著に上方に変位する点である。有限要素法による解析結果から判断すると、プレートの形状とそれに働く北西&mdash;南東方向の圧縮力からは、フィリピン海プレートは相模湾付近では必然的に隆起し上盤の大陸プレートに強く押しつけられる状態にあると考えられる。一方、測地測量データの解析からは、この辺りがプレート間カップリングの強いところであること、すなわち、次の大地震のための応力蓄積が進行しつつある場所であることが推定されている。上述の解析結果はこの推定と整合的である。","subitem_description_language":"ja","subitem_description_type":"Other"},{"subitem_description":"&nbsp;&nbsp;&nbsp;We perfomed three-dimensional (3D) visualization of two plate models of the Philippine sea plate, which is descending beneath the Kanto district. Here we present three different representations, using the wire frame, anaglyph and shading methods. Such visualization makes the difference in shape between the plate models easy to understand with the eye. One model has an overall concave surface, while the other is characterized by a somewhat convex surface.<br>&nbsp;&nbsp;&nbsp;Finite element analysis was performed on the two plate models to investigate their elastic behavior when subjected to a compressive force. This force represents the NW-SE compressive stress acting on the Philippine Sea plate beneath the Kanto district. While in appearance the two models are quite different in form, we found that in terms of elastic deformation their behavior was rather similar. Both plate models commonly show clear upheavals near the region where the 1923 Kanto earthquake occurred. This means that when the Philippine sea plate is subject to a NW-SE compressive stress it tends to be in strong contact with the upper continental plate near the focal region of the 1923 Kanto earthquake, due to upward bending of the plate. Inversion analysis of geodetic data has shown that the Philippine Sea plate and the continental plate are strongly coupled in this region during interseismic periods. Our computations suggest the possibility that this strong coupling in interseismic periods may result from mechanical deformation of the subducting plate in a compressive stress field.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"気象庁気象研究所","subitem_publisher_language":"ja"},{"subitem_publisher":"Japan Meteorological Agency / Meteorological Research Institute","subitem_publisher_language":"en"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.2467/mripapers.46.107"}}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0031-126X","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"小高 俊一","creatorNameLang":"ja"},{"creatorName":"Odaka Toshikazu","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"原田 智史","creatorNameLang":"ja"},{"creatorName":"Harada Satoshi","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"中村 浩二","creatorNameLang":"ja"},{"creatorName":"Nakamura Koji","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"橋本 徹夫","creatorNameLang":"ja"},{"creatorName":"Hashimoto Tetsuo","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"伊藤 秀美","creatorNameLang":"ja"},{"creatorName":"M. Ito Hidemi","creatorNameLang":"en"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_title":"関東地方下のフィリピン海プレートの3次元形状表現と弾性板としての変形の特徴","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"関東地方下のフィリピン海プレートの3次元形状表現と弾性板としての変形の特徴","subitem_title_language":"ja"},{"subitem_title":"3D Representations and Elastic Deformation of the Philippine Sea Plate beneath the Kanto District","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":"5669","relation_version_is_last":true,"title":["関東地方下のフィリピン海プレートの3次元形状表現と弾性板としての変形の特徴"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-08T09:27:55.111796+00:00"}