{"_buckets": {"deposit": "ab6fc2d5-fbc3-44f6-8cd0-c153725b5d52"}, "_deposit": {"id": "4688", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "4688"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00004688", "sets": []}, "author_link": [], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2017-09", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "3", "bibliographicPageEnd": "1900", "bibliographicPageStart": "1888", "bibliographicVolumeNumber": "210", "bibliographic_titles": [{"bibliographic_title": "GEOPHYSICAL JOURNAL INTERNATIONAL", "bibliographic_titleLang": "en"}]}]}, "item_10001_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "Most tools and theories for analysing tsunami records were originally developed for coastal sites located far from the tsunami source. As a result, we must take care in using these for records observed inside the focal area where seismic waves can exist together with tsunami. This study investigates the validity and limitations of theories used in past studies. We use 2-D elastic equation of motion as a reference, while most tsunami studies employed incompressible fluid theory. We first examine a two-step method commonly used for setting the initial conditions in tsunami simulations. The method employs the two analytical solutions for the sea-bottom and sea-surface deformations. We found excellent agreement between the initial heights calculated by the two-step method and by the simulation including elastic crust and compressible sea water. We further investigated the change in the ocean-bottom pressure during tsunami generation. For high-frequency pressure records, although the pressure change was sometimes assumed to be proportional to sea-bottom velocity, this did not hold in general, but worked for the first motion. For low-frequency records, ocean-bottom pressure change was usually assumed to be proportional to sea-bottom acceleration. This works nicely when the deformation is smooth, but fails when the sea bottom deforms steeply. We found that a new analytical solution could reproduce the relation more precisely. The validity and limitations of the conventional theories need to be taken into account when analysing tsunami records inside the focal area.", "subitem_description_language": "en", "subitem_description_type": "Other"}]}, "item_10001_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "OXFORD UNIV PRESS", "subitem_publisher_language": "en"}]}, "item_10001_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "10.1093/gji/ggx275"}}]}, "item_10001_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "1365-246X", "subitem_source_identifier_type": "EISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Tatsuhiko Saito", "creatorNameLang": "en"}]}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_title": "Tsunami generation: validity and limitations of conventional theories", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Tsunami generation: validity and limitations of conventional theories", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "1", "path": ["1670839190650"], "permalink_uri": "https://nied-repo.bosai.go.jp/records/4688", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-03-30"}, "publish_date": "2023-03-30", "publish_status": "0", "recid": "4688", "relation": {}, "relation_version_is_last": true, "title": ["Tsunami generation: validity and limitations of conventional theories"], "weko_shared_id": -1}