{"_buckets": {"deposit": "f8e83a9d-68aa-424a-9325-07c4f44cb538"}, "_deposit": {"id": "4013", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "4013"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00004013", "sets": []}, "author_link": [], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2014-08"}, "bibliographicIssueNumber": "8", "bibliographicPageEnd": "6511", "bibliographicPageStart": "6486", "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": "In this study, we imaged a detailed seismic attenuation structure (frequency-independent Q(-1)) beneath Hokkaido, Japan, by merging waveform data from a dense permanent seismic network with those from a very dense temporary network. Corner frequency of each event used for t* estimation was determined by the S coda wave spectral ratio method. The seismic attenuation (Q(p)(-1)) structure is clearly imaged at depths down to about 120 km. For the fore-arc side of Hokkaido, high-Q(p) zones are imaged at depths of 10 to 80 km in the crust and mantle wedge above the Pacific slab. Low-Q(p) zones are clearly imaged in the mantle wedge beneath the back-arc areas of eastern and southern Hokkaido. These low-Q(p) zones, extending from deeper regions, extend to the Moho beneath volcanoes, the locations of which are consistent with those of seismic low-velocity regions. These results suggest that the mantle wedge upwelling flow occurs beneath Hokkaido, except in the area where there is a gap in the volcano chain. In contrast, an inhomogeneous seismic attenuation structure is clearly imaged beneath the Hokkaido corner. A broad low-Q(p) zone is located at depths of 0-60 km to the west of the Hidaka main thrust. The location almost corresponds to that of the seismic low-velocity zone in the collision zone. The fault planes of the 1970 M6.7 and 1982 M7.1 earthquakes are located at the edges of this broad low-Q(p) zone. Observations in this study indicate that our findings contribute to understanding the detailed arc-arc collision process, magmatism, and seismotectonics beneath Hokkaido.", "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": "10.1002/2014JB011099"}}]}, "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": "Saeko Kita", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Junichi Nakajima", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Akira Hasegawa", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Tomomi Okada", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Kei Katsumata", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Youichi Asano", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Takeshi Kimura", "creatorNameLang": "en"}]}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_title": "Detailed seismic attenuation structure beneath Hokkaido, northeastern Japan: Arc-arc collision process, arc magmatism, and seismotectonics", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Detailed seismic attenuation structure beneath Hokkaido, northeastern Japan: Arc-arc collision process, arc magmatism, and seismotectonics", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "1", "path": ["1670839190650"], "permalink_uri": "https://nied-repo.bosai.go.jp/records/4013", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-03-30"}, "publish_date": "2023-03-30", "publish_status": "0", "recid": "4013", "relation": {}, "relation_version_is_last": true, "title": ["Detailed seismic attenuation structure beneath Hokkaido, northeastern Japan: Arc-arc collision process, arc magmatism, and seismotectonics"], "weko_shared_id": -1}