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From 12 to 400 persons were killed and 150 to 1200 houses were destroyed in each earthquake. These earthquakes were associated with tsunamis and remarkable crustal uplifts (0.9\uff5e2.2m). In this paper, the distribution of seismic intensity and the tsunami behavior are investigated with the aid of the field survey and newly collected data. The results are summarized as follows: 1) The magnitude of the 1793 Ajigasawa earthquake   is  inferred  to  be  M=1.2, because the area of the seismic intensity was larger   than the 1939 Oga earthquake (M =7.0). The distribution patterns of seismic intensity for the 1694 Noshiro, 1704 Iwadate and the 1810 Oga earthquakes are similar to that of the 1939 Oga earthquake, and these earthquake magnitudes may be regarded as M=7.0. 2) The inundation heights of the tsunami generated by the 1793 Ajigasawa earthquake were surveyed along the coast from Ajigasawa to Fukaura and found to be 3\uff5e5 meters (above M.S.L.).    The tsunami magnitude (Imamura-Iida scale) was m=1, sug- gesting that the source area extended to the continental shelf. 3) According to the documents of sea-level change, the tsunami heights due to the 1704 Iwadate earthquake were 0.6\u20151.4 meters between Fukaura and Takinoma, suggesting that the tsunami magnitude can be regarded as m=0. For the 1694 Noshiro and 1810 Oga earthquakes, the wave-heights of about 20\uff5e30 cm were recorded at the mouths of the Yoneshiro River and Lake Hachiro.   These behaviors suggest a tsunami magnitude of m=-1. 4) Source lengths ranging from 30 to 50 km are estimated for these earthquakes from the distributions of seismic intensity, tsunami and crustal deformation. The seismic sources were lined up along the coast from the West Tsugaru to the Oga Peninsula.", "subitem_description_type": "Abstract"}]}, "item_4_full_name_3": {"attribute_name": "\u8457\u8005\u5225\u540d", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "128037", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Hatori, Tokutaro"}]}]}, "item_4_identifier_registration": {"attribute_name": "ID\u767b\u9332", "attribute_value_mlt": [{"subitem_identifier_reg_text": "10.15083/0000032851", "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": "\u5730\u9707\u7814\u7a76\u6240"}]}, "item_creator": {"attribute_name": "\u8457\u8005", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "\u7fbd\u9ce5, \u5fb3\u592a\u90ce"}], "nameIdentifiers": [{"nameIdentifier": "128036", "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": "ji0622002.pdf", "filesize": [{"value": "996.5 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 996500.0, "url": {"label": "ji0622002.pdf", "url": "https://repository.dl.itc.u-tokyo.ac.jp/record/32851/files/ji0622002.pdf"}, "version_id": "fec57a98-1e0f-424d-99d5-18c3a35e4c45"}]}, "item_language": {"attribute_name": "\u8a00\u8a9e", "attribute_value_mlt": [{"subitem_language": "jpn"}]}, "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": "\u897f\u6d25\u8efd\u30fb\u7537\u9e7f\u9593\u306b\u304a\u3051\u308b\u6b74\u53f2\u5730\u9707(1694\uff5e1810)\u306e\u9707\u5ea6\u30fb\u6d25\u6ce2\u8abf\u67fb", "item_titles": {"attribute_name": "\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_title": "\u897f\u6d25\u8efd\u30fb\u7537\u9e7f\u9593\u306b\u304a\u3051\u308b\u6b74\u53f2\u5730\u9707(1694\uff5e1810)\u306e\u9707\u5ea6\u30fb\u6d25\u6ce2\u8abf\u67fb", "subitem_title_language": "ja"}]}, "item_type_id": "4", "owner": "1", "path": ["80/4535/4757/4763", "9/504/4538/4759/4764"], "permalink_uri": "https://doi.org/10.15083/0000032851", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2008-05-30"}, "publish_date": "2008-05-30", "publish_status": "0", "recid": "32851", "relation": {}, "relation_version_is_last": true, "title": ["\u897f\u6d25\u8efd\u30fb\u7537\u9e7f\u9593\u306b\u304a\u3051\u308b\u6b74\u53f2\u5730\u9707(1694\uff5e1810)\u306e\u9707\u5ea6\u30fb\u6d25\u6ce2\u8abf\u67fb"], "weko_shared_id": -1}