{"_buckets": {"deposit": "3cdae38d-fbb8-49e8-8183-cac75313bafb"}, "_deposit": {"id": "4014", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "4014"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00004014", "sets": []}, "author_link": [], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2014-10"}, "bibliographicIssueNumber": "10", "bibliographicPageEnd": "7822", "bibliographicPageStart": "7805", "bibliographicVolumeNumber": "119", "bibliographic_titles": [{"bibliographic_title": "JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH", "bibliographic_titleLang": "en"}]}]}, "item_10001_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "We estimated the S wave attenuation structure in southwestern Japan and the western Nankai Trough by analyzing maximum S wave amplitudes at 4-8, 8-16, and 16-32Hz with a correction term for apparent amplitude attenuation due to multiple forward scattering. Because the estimated attenuation (Q(-1)) in our tomographic study was much larger than Q(-1) due to wide-angle scattering, our estimated Q(-1) was composed mainly of intrinsic attenuation. High-attenuation areas (Q(-1)\u0026gt;1/300 at 4-8Hz) were imaged beneath Quaternary volcanoes and south off Shikoku. Low (\u0026lt;1/1500 at 4-8Hz) or moderate Q(-1) (1/500-1/1000 at 4-8Hz) was imaged beneath Shikoku and nonvolcanic areas of Chugoku. High and moderate Q(-1) in and around Shikoku are located near the top of subducting Philippine Sea Plate. This correspondence implies that these high and moderate Q(-1) reflect fluid in the subducting slab. By applying a theoretical model of attenuation in water-saturated porous random media, we examined wave-induced fluid flow induced by lower frequency (\u0026lt;1Hz) seismic waves that may be related with triggering of nonvolcanic tremor by surface waves. Even though Q(-1) structure in this study cannot fully explain the tremor triggering by wave-induced fluid flow, large uncertainties of Q(-1) in tremor zone suggest that high resolution imaging of Q(-1) and random inhomogeneities would give some constraints for the spatial variation of permeability and other medium properties.\nKey Points \u0026lt;list list-type=\"bulleted\" id=\"jgrb50863-list-0001\"\u0026gt;\u0026lt;list-item id=\"jgrb50863-li-0001\"\u0026gt;Attenuation structure is estimated by removing scattering attenuation\u0026lt;list-item id=\"jgrb50863-li-0002\"\u0026gt;A rift zone shows a peculiar combination of random inhomogeneity and 1/Q\u0026lt;list-item id=\"jgrb50863-li-0003\"\u0026gt;1/Q in subducting slab is examined in terms of fluid distribution and dynamics", "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": "10.1002/2014JB011103"}}]}, "item_10001_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "2169-9356", "subitem_source_identifier_type": "EISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Tsutomu Takahashi", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Koichiro Obana", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Yojiro Yamamoto", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Ayako Nakanishi", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Shuichi Kodaira", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Yoshiyuki Kaneda", "creatorNameLang": "en"}]}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_title": "S wave attenuation structure on the western side of the Nankai subduction zone: Implications for fluid distribution and dynamics", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "S wave attenuation structure on the western side of the Nankai subduction zone: Implications for fluid distribution and dynamics", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "1", "path": ["1670839190650"], "permalink_uri": "https://nied-repo.bosai.go.jp/records/4014", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-03-30"}, "publish_date": "2023-03-30", "publish_status": "0", "recid": "4014", "relation": {}, "relation_version_is_last": true, "title": ["S wave attenuation structure on the western side of the Nankai subduction zone: Implications for fluid distribution and dynamics"], "weko_shared_id": -1}