{"created":"2023-03-31T01:56:28.447712+00:00","id":4557,"links":{},"metadata":{"_buckets":{"deposit":"c50f74f8-2db4-4cb5-bec0-d6f60a55e1a3"},"_deposit":{"id":"4557","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"4557"},"status":"published"},"_oai":{"id":"oai:nied-repo.bosai.go.jp:00004557","sets":[]},"author_link":[],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2012-05","bibliographicIssueDateType":"Issued"},"bibliographicVolumeNumber":"39","bibliographic_titles":[{"bibliographic_title":"GEOPHYSICAL RESEARCH LETTERS","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"We investigated the migration mode of deep non-volcanic tremor activity beneath Kii Peninsula, southwest Japan. Major tremor episodes are characterized by long-term migration with a velocity of about 10 km/day, propagating along the strike of the subducting plate. Similar tremor migration in Cascadia is accompanied by reverse propagation at speeds on the order of 100 km/day and much faster slip-parallel migration at speeds on the order of 1000 km/day. We systematically searched for migrating tremor with clear linearity in space and time. As a result, we found tremor migrations at speeds ranging from 1 to 60 km/hr depending on the along-dip position in the tremor zone. The observed decrease in migration speed with increasing measurement time scale suggests that migration is controlled by a diffusion process. The along-strike migration at lower speeds, including both forward and backward directions relative to the long-term migration episode, is concentrated at the updip side of the tremor zone, whereas the faster slip-parallel migration is distributed over the entire zone. The long-term migration seems to consist of and be excited by the propagation of along-strike creep at the updip part. The concentration of along-strike migrating tremor sequences at the updip side may reflect the existence of abundant fluid that accumulates at the corner of the mantle wedge. The faster slip-parallel migrations represent projections of along-strike fluctuations in slip pulse propagation controlled by striations along the plate interface. Citation: Obara, K., T. Matsuzawa, S. Tanaka, and T. Maeda (2012), Depth-dependent mode of tremor migration beneath Kii Peninsula, Nankai subduction zone, Geophys. Res. Lett., 39, L10308, doi:10.1029/2012GL051420.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"AMER GEOPHYSICAL UNION","subitem_publisher_language":"en"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1029/2012GL051420"}}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0094-8276","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kazushige Obara","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Takanori Matsuzawa","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Sachiko Tanaka","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Takuto Maeda","creatorNameLang":"en"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_title":"Depth-dependent mode of tremor migration beneath Kii Peninsula, Nankai subduction zone","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Depth-dependent mode of tremor migration beneath Kii Peninsula, Nankai subduction zone","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":"4557","relation_version_is_last":true,"title":["Depth-dependent mode of tremor migration beneath Kii Peninsula, Nankai subduction zone"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-08T06:05:20.722262+00:00"}