{"_buckets": {"deposit": "27b2cc6a-763b-4d01-9394-1e3cecbc238a"}, "_deposit": {"id": "33321", "owner": "1", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "33321"}, "status": "published"}, "_oai": {"id": "oai:repository.dl.itc.u-tokyo.ac.jp:00033321", "sets": []}, "author_link": ["130104", "130105", "130101", "130102", "130103"], "item_4_alternative_title_1": {"attribute_name": "\u305d\u306e\u4ed6\u306e\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_alternative_title": "7.1963\u5e74\u30a8\u30c8\u30ed\u30d5\u6c96\u5730\u9707\u306b\u3088\u308b\u5730\u7403\u81ea\u7531\u632f\u52d5"}]}, "item_4_biblio_info_7": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "1970-06-10", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "2", "bibliographicPageEnd": "114", "bibliographicPageStart": "87", "bibliographicVolumeNumber": "48", "bibliographic_titles": [{"bibliographic_title": "\u6771\u4eac\u5927\u5b78\u5730\u9707\u7814\u7a76\u6240\u5f59\u5831 = Bulletin of the Earthquake Research Institute, University of Tokyo"}]}]}, "item_4_description_13": {"attribute_name": "\u30d5\u30a9\u30fc\u30de\u30c3\u30c8", "attribute_value_mlt": [{"subitem_description": "application/pdf", "subitem_description_type": "Other"}]}, "item_4_description_5": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "Power spectrum data are obtained from the free oscillations of the earth excited by the Kurile Islands earthquake of October 13, 1963, and recorded at eleven stations of WWSSN. Eigen periods of fundamental free oscillations are determined for spheroidal modes 7 to 50, and torsional modes 7 to 46. Equivalent phase velocities are also calculated from the observed periods over the period range from 820 to 170 sec. Observed periods differ slightly from one station to another, and such divergence becomes significant for periods shorter than 350 sec. This difference in the observed period may suggest that the relative amplitudes of the individual modes are affected by a lateral heterogeneity of the upper mantle not deeper than several hundred kilometers. From the amplitude decay with time, the attenuation of free oscillations is estimated for a number of spectral peaks. For the spheroidal oscillation, the average Q factor is 251 for w=13-17 (T=380-480sec), and 200 for n=18-42 (T=200-380sec). Various studies are made on the spectral amplitudes to obtain the source-space function of the earthquake and the pattern of free oscillation modes on the sphere. The results are almost consistent with the earthquake mechanism and mode excitation as revealed by other studies, though the pattern of oscillation is hard to recognize.|\u4e16\u754c\u6a19\u6e96\u5730\u9707\u89b3\u6e2c\u6240\u306e\u3046\u306111\u30b1\u6240\u306e\u30d7\u30ec\u30b9.\u30e6\u30fc\u30a4\u30f3\u30b0\u9577\u5468\u671f\u5730\u9707\u8a08\u306e\u8a18\u9332\u3092\u3082\u3061\u3044,1963\u5e7410\u6708\u306e\u30a8\u30c8\u30ed\u30d5\u6c96\u5730\u9707\u306e\u5730\u7403\u81ea\u7531\u632f\u52d5\u3092\u89e3\u6790\u3057\u305f.\u81ea\u7531\u632f\u52d5\u306e\u56fa\u6709\u5468\u671f\u53ca\u3073\u9032\u884c\u6ce2\u3068\u3057\u3066\u306e\u4f4d\u76f8\u901f\u5ea6,\u632f\u5e45\u306e\u5927\u304d\u3055\u53ca\u3073\u4f4d\u76f8\u306e\u5206\u5e03\u306b\u95a2\u3057\u3066\u6b21\u306e\u7d50\u679c\u304c\u5f97\u3089\u308c\u305f.", "subitem_description_type": "Abstract"}]}, "item_4_full_name_3": {"attribute_name": "\u8457\u8005\u5225\u540d", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "130104", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "\u963f\u90e8, \u52dd\u5f81"}]}, {"nameIdentifiers": [{"nameIdentifier": "130105", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "\u4f50\u85e4, \u6cf0\u592b"}]}]}, "item_4_identifier_registration": {"attribute_name": "ID\u767b\u9332", "attribute_value_mlt": [{"subitem_identifier_reg_text": "10.15083/0000033321", "subitem_identifier_reg_type": "JaLC"}]}, "item_4_publisher_20": {"attribute_name": "\u51fa\u7248\u8005", "attribute_value_mlt": [{"subitem_publisher": "\u6771\u4eac\u5927\u5b66\u5730\u9707\u7814\u7a76\u6240"}]}, "item_4_source_id_10": {"attribute_name": "\u66f8\u8a8c\u30ec\u30b3\u30fc\u30c9ID", "attribute_value_mlt": [{"subitem_source_identifier": "AN00162258", "subitem_source_identifier_type": "NCID"}]}, "item_4_source_id_8": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "00408972", "subitem_source_identifier_type": "ISSN"}]}, "item_4_subject_15": {"attribute_name": "\u65e5\u672c\u5341\u9032\u5206\u985e\u6cd5", "attribute_value_mlt": [{"subitem_subject": "453", "subitem_subject_scheme": "NDC"}]}, "item_4_text_21": {"attribute_name": "\u51fa\u7248\u8005\u5225\u540d", "attribute_value_mlt": [{"subitem_text_value": "Earthquake Research Institute, University of Tokyo"}]}, "item_4_text_34": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"subitem_text_value": "Departmental Bulletin Paper"}]}, "item_4_text_4": {"attribute_name": "\u8457\u8005\u6240\u5c5e", "attribute_value_mlt": [{"subitem_text_value": "Earthquake Research Institute"}, {"subitem_text_value": "International Institute of Seismology and Earthquake Engineering"}]}, "item_creator": {"attribute_name": "\u8457\u8005", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Abe, Katsuyuki"}], "nameIdentifiers": [{"nameIdentifier": "130101", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Sato, Yasuo"}], "nameIdentifiers": [{"nameIdentifier": "130102", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "Frez, Jose"}], "nameIdentifiers": [{"nameIdentifier": "130103", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "\u30d5\u30a1\u30a4\u30eb\u60c5\u5831", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2017-06-26"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "ji0482001.pdf", "filesize": [{"value": "1.8 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 1800000.0, "url": {"label": "ji0482001.pdf", "url": "https://repository.dl.itc.u-tokyo.ac.jp/record/33321/files/ji0482001.pdf"}, "version_id": "01a9abec-309b-4b78-a3c6-f28411e747d2"}]}, "item_language": {"attribute_name": "\u8a00\u8a9e", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"resourcetype": "departmental bulletin paper", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "7. Free Oscillations of the Earth Excited by the Kurile Islands Earthquake 1963", "item_titles": {"attribute_name": "\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_title": "7. Free Oscillations of the Earth Excited by the Kurile Islands Earthquake 1963", "subitem_title_language": "en"}]}, "item_type_id": "4", "owner": "1", "path": ["80/4535/4885/4895", "9/504/4538/4887/4896"], "permalink_uri": "https://doi.org/10.15083/0000033321", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2008-05-30"}, "publish_date": "2008-05-30", "publish_status": "0", "recid": "33321", "relation": {}, "relation_version_is_last": true, "title": ["7. Free Oscillations of the Earth Excited by the Kurile Islands Earthquake 1963"], "weko_shared_id": -1}