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{"_buckets": {"deposit": "f9a52516-0087-45df-8bea-f5552c9dc6dd"}, "_deposit": {"id": "4480", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "4480"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00004480", "sets": []}, "author_link": [], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2005"}, "bibliographicIssueNumber": "3", "bibliographicPageEnd": "10", "bibliographicPageStart": "1", "bibliographicVolumeNumber": "110", "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": "A family of core-reflected shear waves generated by the 28 June 2002 Vladivostok deep earthquake, including near vertical reflections from the 410- and 660-km discontinuities, were recorded by ∼500 tiltmeters of the Hi-net and ∼60 broadband seismometers of the F-net in Japan. The observed upper mantle reflections were cross-correlated with synthetics calculated on the basis of the spectral element method for a fully three-dimensional Earth model using the Earth Simulator supercomputer to accurately determine the depths of the reflection points. The mapped upper mantle discontinuities were compared with a high-resolution P wave tomographic image. The 660-km discontinuity is depressed at a constant level of ∼15 km along the bottom of the horizontally extending aseismic slab under southwestern Japan. The transition from the normal to the depressed level occurs within a lateral distance of less than ∼200 km. Observations suggest that the reflections from the 410-km discontinuity interfere with those from slab-related structures on top of this discontinuity, leading to a spuriously large elevation of the 410-km discontinuity in and near the subducted slab. Records at stations relatively free from such interference effects, however, still imply elevation of this discontinuity within the slab. Copyright 2005 by the American Geophysical Union.", "subitem_description_language": "en", "subitem_description_type": "Other"}]}, "item_10001_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "10.1029/2004JB003266"}}]}, "item_10001_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "2169-9313", "subitem_source_identifier_type": "ISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Tono, Y.", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Kunugi, T.", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Fukao, Y.", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Tsuboi, S.", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Kanjo, K.", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Kasahara, K.", "creatorNameLang": "en"}]}]}, "item_title": "Mapping of the 410- and 660-km discontinuities beneath the Japanese islands", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Mapping of the 410- and 660-km discontinuities beneath the Japanese islands", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "1", "path": ["1670839190650"], "permalink_uri": "https://nied-repo.bosai.go.jp/records/4480", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-03-30"}, "publish_date": "2023-03-30", "publish_status": "0", "recid": "4480", "relation": {}, "relation_version_is_last": true, "title": ["Mapping of the 410- and 660-km discontinuities beneath the Japanese islands"], "weko_shared_id": -1}
  1. 防災科研関係論文

Mapping of the 410- and 660-km discontinuities beneath the Japanese islands

https://nied-repo.bosai.go.jp/records/4480
https://nied-repo.bosai.go.jp/records/4480
7ce0ad21-01cd-4f1b-983e-4d16f3fe6504
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Mapping of the 410- and 660-km discontinuities beneath the Japanese islands
著者 Tono, Y.

× Tono, Y.

en Tono, Y.

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Kunugi, T.

× Kunugi, T.

en Kunugi, T.

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Fukao, Y.

× Fukao, Y.

en Fukao, Y.

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Tsuboi, S.

× Tsuboi, S.

en Tsuboi, S.

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Kanjo, K.

× Kanjo, K.

en Kanjo, K.

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Kasahara, K.

× Kasahara, K.

en Kasahara, K.

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抄録
内容記述タイプ Other
内容記述 A family of core-reflected shear waves generated by the 28 June 2002 Vladivostok deep earthquake, including near vertical reflections from the 410- and 660-km discontinuities, were recorded by ∼500 tiltmeters of the Hi-net and ∼60 broadband seismometers of the F-net in Japan. The observed upper mantle reflections were cross-correlated with synthetics calculated on the basis of the spectral element method for a fully three-dimensional Earth model using the Earth Simulator supercomputer to accurately determine the depths of the reflection points. The mapped upper mantle discontinuities were compared with a high-resolution P wave tomographic image. The 660-km discontinuity is depressed at a constant level of ∼15 km along the bottom of the horizontally extending aseismic slab under southwestern Japan. The transition from the normal to the depressed level occurs within a lateral distance of less than ∼200 km. Observations suggest that the reflections from the 410-km discontinuity interfere with those from slab-related structures on top of this discontinuity, leading to a spuriously large elevation of the 410-km discontinuity in and near the subducted slab. Records at stations relatively free from such interference effects, however, still imply elevation of this discontinuity within the slab. Copyright 2005 by the American Geophysical Union.
言語 en
書誌情報 en : Journal of Geophysical Research: Solid Earth

巻 110, 号 3, p. 1-10
ISSN
収録物識別子タイプ ISSN
収録物識別子 2169-9313
DOI
関連識別子 10.1029/2004JB003266
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