{"_buckets": {"deposit": "c7ff0172-4f6a-4f1e-9cd6-b2804e71f982"}, "_deposit": {"id": "33462", "owner": "1", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "33462"}, "status": "published"}, "_oai": {"id": "oai:repository.dl.itc.u-tokyo.ac.jp:00033462", "sets": []}, "author_link": ["130703", "130702"], "item_4_alternative_title_1": {"attribute_name": "\u305d\u306e\u4ed6\u306e\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_alternative_title": "4.\u5730\u9707\u6d3b\u52d5\u306e\u79fb\u52d5"}]}, "item_4_biblio_info_7": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "1968-03-19", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "1", "bibliographicPageEnd": "74", "bibliographicPageStart": "53", "bibliographicVolumeNumber": "46", "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": "Local migration of the seismic activity before and after the great Sanriku earthquake of March 3, 1933 in northern Japan is described. This remarkable migration pattern in the most active seismic zone in the world is compared with that of the Anatolia earthquakes accompanied by successive development of a great faulting system. The global migration of the epicentral regions of the greatest earthquakes during the last 30 years is summarized. The two northward migration branches in the western part of the circum-Pacific belt and in the Sumatra-Burma-Kansu-Baikal seismic zone and the one southward branch in the south-eastern part of the circum-Pacific belt, which are confirmed by certain evidence, suggest a clockwise rotational migration pattern in the circum-Pacific belt and the surrounding area or a worldwide migration pattern from the equatorial region to the pole regions. These migration patterns may provide an important suggestion on the mechaism of earthquake 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