{"_buckets": {"deposit": "8afa9ff6-d04c-4ae6-b171-89e5d7c23302"}, "_deposit": {"id": "4619", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "4619"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00004619", "sets": []}, "author_link": [], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2015-01", "bibliographicIssueDateType": "Issued"}, "bibliographicVolumeNumber": "6", "bibliographic_titles": [{"bibliographic_title": "NATURE COMMUNICATIONS", "bibliographic_titleLang": "en"}]}]}, "item_10001_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "Excitations of seismic background noises are mostly related to fluid disturbances in the atmosphere, ocean and the solid Earth. Earthquakes have not been considered as a stationary excitation source because they occur intermittently. Here we report that acoustic-coupled Rayleigh waves (at 0.7-2.0 Hz) travelling in the ocean and marine sediments, retrieved by correlating ambient noise on a hydrophone array deployed through a shallow to deep seafloor (100-4,800 m) across the Nankai Trough, Japan, are incessantly excited by nearby small earthquakes. The observed cross-correlation functions and 2D numerical simulations for wave propagation through a laterally heterogeneous ocean-crust system show that, in a subduction zone, energetic wave sources are located primarily under the seafloor in directions consistent with nearby seismicity, and secondarily in the ocean. Short-period background noise in the ocean-crust system in the Nankai subduction zone is mainly attributed to ocean-acoustic Rayleigh waves of earthquake origin.", "subitem_description_language": "en", "subitem_description_type": "Other"}]}, "item_10001_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "NATURE PUBLISHING GROUP", "subitem_publisher_language": "en"}]}, "item_10001_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "10.1038/ncomms7132"}}]}, "item_10001_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "2041-1723", "subitem_source_identifier_type": "ISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Takashi Tonegawa", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Yoshio Fukao", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Tsutomu Takahashi", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Koichiro Obana", "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": "Ambient seafloor noise excited by earthquakes in the Nankai subduction zone", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Ambient seafloor noise excited by earthquakes in the Nankai subduction zone", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "1", "path": ["1670839190650"], "permalink_uri": "https://nied-repo.bosai.go.jp/records/4619", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-03-30"}, "publish_date": "2023-03-30", "publish_status": "0", "recid": "4619", "relation": {}, "relation_version_is_last": true, "title": ["Ambient seafloor noise excited by earthquakes in the Nankai subduction zone"], "weko_shared_id": -1}