{"id":"https://openalex.org/A5017689934","orcid":"https://orcid.org/0000-0003-0590-5696","observed_orcids":["https://orcid.org/0000-0003-0590-5696"],"display_name":"Yoshihiro Iijima","raw_author_names":["IIJIMA, YOSHIHIRO","Iijima Yoshihiro","Iijima, Yoshihiro","Y. Iijima","Yoshihiro IIJIMA","Yoshihiro Iijima","Yoshihiro, Iijima","\u30a4\u30a4\u30b8\u30de, \u30e8\u30b7\u30d2\u30ed"],"full_name":"Iijima, Yoshihiro","works_count":124,"cited_by_count":2072,"summary_stats":{"2yr_mean_citedness":1.5454545454545454,"h_index":24,"i10_index":41},"ids":{"openalex":"https://openalex.org/A5017689934","orcid":"https://orcid.org/0000-0003-0590-5696","observed_orcids":["https://orcid.org/0000-0003-0590-5696"]},"affiliations":[{"institution":{"id":"https://openalex.org/I1315852903","ror":"https://ror.org/059qg2m13","display_name":"Japan Agency for Marine-Earth Science and Technology","country_code":"JP","type":"facility","lineage":["https://openalex.org/I1315852903"]},"years":[2016,2015,2014,2013,2012,2011,2009,2007,2006,2004]},{"institution":{"id":"https://openalex.org/I146399215","ror":"https://ror.org/02956yf07","display_name":"University of Tsukuba","country_code":"JP","type":"education","lineage":["https://openalex.org/I146399215"]},"years":[2013]},{"institution":{"id":"https://openalex.org/I178574317","ror":"https://ror.org/01529vy56","display_name":"Mie University","country_code":"JP","type":"education","lineage":["https://openalex.org/I178574317"]},"years":[2023,2022,2021,2020,2019,2018,2017,2016]},{"institution":{"id":"https://openalex.org/I180203408","ror":"https://ror.org/03zyp6p76","display_name":"Yokohama National University","country_code":"JP","type":"education","lineage":["https://openalex.org/I180203408"]},"years":[2009]},{"institution":{"id":"https://openalex.org/I36080156","ror":"https://ror.org/05k6m5t95","display_name":"National Institute of Polar Research","country_code":"JP","type":"other","lineage":["https://openalex.org/I1319490839","https://openalex.org/I36080156","https://openalex.org/I4210158934"]},"years":[2015]},{"institution":{"id":"https://openalex.org/I4210111564","ror":"https://ror.org/01rwqqv19","display_name":"Melnikov Permafrost Institute of the Siberian Branch of the Russian Academy of Science","country_code":"RU","type":"education","lineage":["https://openalex.org/I1313323035","https://openalex.org/I4210111564","https://openalex.org/I4210127387"]},"years":[2019]},{"institution":{"id":"https://openalex.org/I4405257070","ror":"https://ror.org/04vpzzp35","display_name":"Nagano Environmental Conservation Research Institute","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4405257070"]},"years":[2013]},{"institution":{"id":"https://openalex.org/I69740276","ror":"https://ror.org/00ws30h19","display_name":"Tokyo Metropolitan University","country_code":"JP","type":"education","lineage":["https://openalex.org/I69740276"]},"years":[2026,2024,2023,2002,2000,1998]},{"institution":{"id":"https://openalex.org/I74801974","ror":"https://ror.org/057zh3y96","display_name":"The University of Tokyo","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]},"years":[2003]}],"last_known_institutions":[{"id":"https://openalex.org/I69740276","ror":"https://ror.org/00ws30h19","display_name":"Tokyo Metropolitan University","country_code":"JP","type":"education","lineage":["https://openalex.org/I69740276"]}],"topics":[{"id":"https://openalex.org/T11333","display_name":"Climate change and permafrost","count":76,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"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/T10029","display_name":"Climate variability and models","count":33,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10644","display_name":"Cryospheric studies and observations","count":27,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"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/T10266","display_name":"Plant Water Relations and Carbon Dynamics","count":20,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10716","display_name":"Soil and Unsaturated Flow","count":18,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T11333","display_name":"Climate change and permafrost","value":0.0007522,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"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/T12614","display_name":"Indigenous Studies and Ecology","value":0.000224,"subfield":{"id":"https://openalex.org/subfields/3314","display_name":"Anthropology"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10644","display_name":"Cryospheric studies and observations","value":0.0001,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"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/T12180","display_name":"Polar Research and Ecology","value":9.71e-05,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11459","display_name":"Arctic and Antarctic ice dynamics","value":8.9e-05,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","score":0.7954102158546448},{"id":"100970517","wikidata":"https://www.wikidata.org/wiki/Q52107","display_name":"Physical geography","score":0.7430733442306519},{"id":"127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","score":0.7232000231742859},{"id":"205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","score":0.6383054852485657},{"id":"111368507","wikidata":"https://www.wikidata.org/wiki/Q43518","display_name":"Oceanography","score":0.4852309226989746}],"counts_by_year":[{"year":1992,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1997,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1998,"works_count":3,"oa_works_count":2,"cited_by_count":0},{"year":2000,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2002,"works_count":4,"oa_works_count":3,"cited_by_count":0},{"year":2003,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2004,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2006,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":2007,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":3,"oa_works_count":2,"cited_by_count":0},{"year":2009,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":2011,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":5,"oa_works_count":2,"cited_by_count":39},{"year":2013,"works_count":8,"oa_works_count":3,"cited_by_count":42},{"year":2014,"works_count":12,"oa_works_count":2,"cited_by_count":43},{"year":2015,"works_count":10,"oa_works_count":2,"cited_by_count":46},{"year":2016,"works_count":10,"oa_works_count":2,"cited_by_count":98},{"year":2017,"works_count":4,"oa_works_count":3,"cited_by_count":85},{"year":2018,"works_count":8,"oa_works_count":4,"cited_by_count":106},{"year":2019,"works_count":5,"oa_works_count":0,"cited_by_count":155},{"year":2020,"works_count":3,"oa_works_count":1,"cited_by_count":188},{"year":2021,"works_count":6,"oa_works_count":6,"cited_by_count":243},{"year":2022,"works_count":3,"oa_works_count":3,"cited_by_count":209},{"year":2023,"works_count":5,"oa_works_count":5,"cited_by_count":185},{"year":2024,"works_count":5,"oa_works_count":5,"cited_by_count":223},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":149},{"year":2026,"works_count":6,"oa_works_count":6,"cited_by_count":180}],"display_name_alternatives":["IIJIMA, YOSHIHIRO","Iijima Yoshihiro","Iijima, Yoshihiro","Y. Iijima","Yoshihiro IIJIMA","Yoshihiro Iijima","Yoshihiro, Iijima","\u30a4\u30a4\u30b8\u30de, \u30e8\u30b7\u30d2\u30ed"],"block_key":"y iijima","works_api_url":"https://api.openalex.org/works?filter=author.id:A5017689934","awards_count":6,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5017689934","updated_date":"2026-11-12T13:17:38","created_date":"2016-06-24T00:00:00"}