{"id":"https://openalex.org/W2606595049","doi":"https://doi.org/10.4294/zisin1948.27.4_302","title":"On the Mechanisms of the Earthquakes of Southeastern Part of Akita Prefecture in 1970","display_name":"On the Mechanisms of the Earthquakes of Southeastern Part of Akita Prefecture in 1970","publication_year":1974,"publication_date":"1974-01-01","ids":{"openalex":"https://openalex.org/W2606595049","doi":"https://doi.org/10.4294/zisin1948.27.4_302","mag":"2606595049"},"language":"en","primary_location":{"id":"doi:10.4294/zisin1948.27.4_302","doi":"https://doi.org/10.4294/zisin1948.27.4_302","is_oa":true,"landing_page_url":"https://doi.org/10.4294/zisin1948.27.4_302","pdf_url":"https://www.jstage.jst.go.jp/article/zisin1948/27/4/27_4_302/_pdf","source":{"id":"https://openalex.org/S2765014856","display_name":"Zisin (Journal of the Seismological Society of Japan 2nd ser )","issn_l":"0037-1114","issn":["0037-1114","1883-9029","2186-599X"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4324113247","host_organization_name":"Seismological Society of Japan","host_organization_lineage":["https://openalex.org/P4324113247"],"host_organization_lineage_names":["Seismological Society of Japan"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Zisin (Journal of the Seismological Society of Japan. 2nd ser.)","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://www.jstage.jst.go.jp/article/zisin1948/27/4/27_4_302/_pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5033675768","display_name":"Takeshi Hasegawa","orcid":"https://orcid.org/0000-0002-3035-3910","observed_orcids":["https://orcid.org/0000-0002-3035-3910"]},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takeshi HASEGAWA","raw_affiliation_strings":["Honjo Seismological Observatory, Faculty of Science, Tohoku University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Honjo Seismological Observatory, Faculty of Science, Tohoku University","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110488486","display_name":"Shuichiro HORI","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Shuichiro HORI","raw_affiliation_strings":["Honjo Seismological Observatory, Faculty of Science, Tohoku University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Honjo Seismological Observatory, Faculty of Science, Tohoku University","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5035057459","display_name":"Akira Hasegawa","orcid":"https://orcid.org/0000-0003-4916-8923","observed_orcids":["https://orcid.org/0000-0003-4916-8923"]},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Akira HASEGAWA","raw_affiliation_strings":["Aobayama Seismological Observatory, Faculty of Science, Tohoku University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Aobayama Seismological Observatory, Faculty of Science, Tohoku University","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109512054","display_name":"Keiji Kasahara","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Keiji KASAHARA","raw_affiliation_strings":["Aobayama Seismological Observatory, Faculty of Science, Tohoku University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Aobayama Seismological Observatory, Faculty of Science, Tohoku University","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109335119","display_name":"Shigeki Horiuchi","orcid":"https://orcid.org/0009-0004-5298-407X","observed_orcids":["https://orcid.org/0009-0004-5298-407X"]},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Shigeki HORIUCHI","raw_affiliation_strings":["Geophysical Institute, Faculty of Science, Tohoku University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Geophysical Institute, Faculty of Science, Tohoku University","institution_ids":["https://openalex.org/I201537933"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5076654078","display_name":"Junji Koyama","orcid":"https://orcid.org/0000-0003-2958-7442","observed_orcids":["https://orcid.org/0000-0003-2958-7442"]},"institutions":[{"id":"https://openalex.org/I201537933","display_name":"Tohoku University","ror":"https://ror.org/01dq60k83","country_code":"JP","type":"education","lineage":["https://openalex.org/I201537933"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Junji KOYAMA","raw_affiliation_strings":["Geophysical Institute, Faculty of Science, Tohoku University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Geophysical Institute, Faculty of Science, Tohoku University","institution_ids":["https://openalex.org/I201537933"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I201537933"],"apc_list":null,"apc_paid":null,"fwci":0.401,"has_fulltext":true,"cited_by_count":3,"citation_normalized_percentile":{"value":0.55889636,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":87,"max":93},"biblio":{"volume":"27","issue":"4","first_page":"302","last_page":"312"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10110","display_name":"earthquake and tectonic studies","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/1908","display_name":"Geophysics"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10110","display_name":"earthquake and tectonic studies","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/1908","display_name":"Geophysics"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13177","display_name":"Geological and Geophysical Studies","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/1907","display_name":"Geology"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13800","display_name":"Earthquake and Disaster Impact Studies","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/3305","display_name":"Geography, Planning and Development"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/earthquake-source-mechanism","display_name":"earthquake source mechanism","score":0.7419999837875366},{"id":"https://openalex.org/keywords/aftershocks","display_name":"aftershocks","score":0.9179999828338623},{"id":"https://openalex.org/keywords/reverse-faulting","display_name":"reverse faulting","score":0.8690000176429749},{"id":"https://openalex.org/keywords/stress-orientation","display_name":"stress orientation","score":0.5929999947547913},{"id":"https://openalex.org/keywords/fault-plane","display_name":"fault plane","score":0.593999981880188}],"concepts":[{"id":"https://openalex.org/C156801008","wikidata":"https://www.wikidata.org/wiki/Q308442","display_name":"Aftershock","level":2,"score":0.9823826551437378},{"id":"https://openalex.org/C195501115","wikidata":"https://www.wikidata.org/wiki/Q6839492","display_name":"Microearthquake","level":3,"score":0.896716296672821},{"id":"https://openalex.org/C165205528","wikidata":"https://www.wikidata.org/wiki/Q83371","display_name":"Seismology","level":1,"score":0.8749379515647888},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.8599354028701782},{"id":"https://openalex.org/C97490223","wikidata":"https://www.wikidata.org/wiki/Q1609712","display_name":"Focal mechanism","level":3,"score":0.7632941007614136},{"id":"https://openalex.org/C2994078444","wikidata":"https://www.wikidata.org/wiki/Q47089","display_name":"Fault plane","level":3,"score":0.6412861347198486},{"id":"https://openalex.org/C2781300812","wikidata":"https://www.wikidata.org/wiki/Q178061","display_name":"Shock (circulatory)","level":2,"score":0.6157934069633484},{"id":"https://openalex.org/C16345878","wikidata":"https://www.wikidata.org/wiki/Q107472979","display_name":"Orientation (vector space)","level":2,"score":0.5517714023590088},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.47516459226608276},{"id":"https://openalex.org/C175551986","wikidata":"https://www.wikidata.org/wiki/Q47089","display_name":"Fault (geology)","level":2,"score":0.47410091757774353},{"id":"https://openalex.org/C126691448","wikidata":"https://www.wikidata.org/wiki/Q2028919","display_name":"Magnitude (astronomy)","level":2,"score":0.4199257791042328},{"id":"https://openalex.org/C17825722","wikidata":"https://www.wikidata.org/wiki/Q17285","display_name":"Plane (geometry)","level":2,"score":0.4192253053188324},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.19333204627037048},{"id":"https://openalex.org/C83176761","wikidata":"https://www.wikidata.org/wiki/Q1394636","display_name":"Induced seismicity","level":2,"score":0.19243723154067993},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.09414052963256836},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.4294/zisin1948.27.4_302","doi":"https://doi.org/10.4294/zisin1948.27.4_302","is_oa":true,"landing_page_url":"https://doi.org/10.4294/zisin1948.27.4_302","pdf_url":"https://www.jstage.jst.go.jp/article/zisin1948/27/4/27_4_302/_pdf","source":{"id":"https://openalex.org/S2765014856","display_name":"Zisin (Journal of the Seismological Society of Japan 2nd ser )","issn_l":"0037-1114","issn":["0037-1114","1883-9029","2186-599X"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4324113247","host_organization_name":"Seismological Society of Japan","host_organization_lineage":["https://openalex.org/P4324113247"],"host_organization_lineage_names":["Seismological Society of Japan"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Zisin (Journal of the Seismological Society of Japan. 2nd ser.)","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.4294/zisin1948.27.4_302","doi":"https://doi.org/10.4294/zisin1948.27.4_302","is_oa":true,"landing_page_url":"https://doi.org/10.4294/zisin1948.27.4_302","pdf_url":"https://www.jstage.jst.go.jp/article/zisin1948/27/4/27_4_302/_pdf","source":{"id":"https://openalex.org/S2765014856","display_name":"Zisin (Journal of the Seismological Society of Japan 2nd ser )","issn_l":"0037-1114","issn":["0037-1114","1883-9029","2186-599X"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4324113247","host_organization_name":"Seismological Society of Japan","host_organization_lineage":["https://openalex.org/P4324113247"],"host_organization_lineage_names":["Seismological Society of Japan"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Zisin (Journal of the Seismological Society of Japan. 2nd ser.)","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2606595049.pdf","grobid_xml":"https://content.openalex.org/works/W2606595049.grobid-xml"},"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2607427884","https://openalex.org/W1990139518","https://openalex.org/W2606964114","https://openalex.org/W2605616381","https://openalex.org/W638166567","https://openalex.org/W2606647153","https://openalex.org/W6921131470","https://openalex.org/W2058474902","https://openalex.org/W2607237055","https://openalex.org/W2614537659"],"abstract_inverted_index":{"The":[0,56,79,101,124,146,187],"focal":[1],"mechanisms":[2],"of":[3,6,9,28,43,49,59,67,71,81,90,114,120,136,139,143,159,165,175,178,189,198,206,217,225],"the":[4,25,29,60,65,68,72,82,91,98,108,112,115,121,134,137,140,144,150,157,160,166,176,179,184,190,195,199,207,211,214,218,226],"earthquake":[5,180,191],"southeastern":[7],"part":[8,216],"Akita":[10],"Prefecture":[11],"which":[12],"occurred":[13],"on":[14,64],"October":[15],"16,":[16],"1970":[17],"and":[18,31,46,74,88,117,210],"its":[19],"aftershocks":[20,116,130,153],"are":[21,36,53,131,154,172],"studied":[22],"by":[23,111,133],"using":[24],"initial":[26,69,141,163],"motions":[27,70,142,164],"P-":[30],"S-waves.":[32],"All":[33],"available":[34],"data":[35,66,119,138],"obtained":[37,132],"from":[38,107,156,204],"WWSSN,":[39],"JMA,":[40],"microearthquake":[41],"observatories":[42],"Tohoku":[44],"Univ.,":[45],"temporary":[47],"stations":[48],"Tokyo":[50],"Univ.The":[51],"results":[52],"as":[54],"follows:1)":[55],"mechanism":[57,125,147],"solution":[58],"main":[61,208,227],"shock":[62,209],"based":[63],"P":[73],"S-waves":[75],"indicates":[76],"reverse":[77],"faulting.":[78],"orientation":[80,177,188,212],"tension":[83],"axis":[84,93],"is":[85,94,104,202,221],"nearly":[86,95],"vertical":[87],"that":[89,170,205,224],"pressusre":[92],"horizontal":[96],"in":[97,183],"WSW-ENE":[99],"direction.":[100],"fault":[102],"plane":[103,110],"not":[105],"distingushed":[106],"auxiliary":[109],"distribution":[113],"other":[118,151],"field":[122],"observations.2)":[123],"solutions":[126,148],"for":[127,149,194,213],"four":[128],"larger":[129],"use":[135],"P-waves.":[145,167],"small":[152],"inferred":[155],"contributions":[158],"regionally":[161],"superposed":[162],"They":[168],"indicate":[169],"there":[171],"two":[173],"types":[174],"generating":[181,192],"stresses":[182],"aftershock":[185,200,219],"area.":[186],"stress":[193],"north-west":[196],"region":[197],"area":[201,220],"different":[203],"rest":[215],"consistent":[222],"with":[223],"shock.":[228]},"counts_by_year":[{"year":2021,"cited_by_count":1}],"updated_date":"2026-09-21T07:43:02.447757","created_date":"2017-04-28T00:00:00"}