{"id":"https://openalex.org/A5084319832","orcid":null,"observed_orcids":[],"display_name":"H\u00e5var Gj\u00f8ystdal","raw_author_names":["Gjoystdal, H.","H. GJ\u00d8YSTDAL","H. Gjoeystdal","H. Gjoystdal","H. Gj\u00f8ystdal","Havar Gjoystdal","H\u00e5var Gj\u00f8ystdal"],"full_name":"H\u00e5var Gj\u00f8ystdal","works_count":54,"cited_by_count":1103,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":15,"i10_index":21},"ids":{"openalex":"https://openalex.org/A5084319832","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I49324905","ror":"https://ror.org/017mte255","display_name":"Equinor (Norway)","country_code":"NO","type":"company","lineage":["https://openalex.org/I49324905"]},"years":[2007]},{"institution":{"id":"https://openalex.org/I53683762","ror":"https://ror.org/02vw8cm83","display_name":"Norsar","country_code":"NO","type":"nonprofit","lineage":["https://openalex.org/I53683762"]},"years":[2020,2018,2008,2007,2006,2005,2004,2003,2002,2000,1999,1998,1996,1995,1993,1992,1985,1984,1983,1981,1975,1973]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T10271","display_name":"Seismic Imaging and Inversion Techniques","count":48,"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/T11757","display_name":"Seismic Waves and Analysis","count":39,"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/T13067","display_name":"Geological Modeling and Analysis","count":16,"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/T13177","display_name":"Geological and Geophysical Studies","count":15,"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/T13193","display_name":"Geological Studies and Exploration","count":9,"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"}}],"topic_share":[{"id":"https://openalex.org/T10271","display_name":"Seismic Imaging and Inversion Techniques","value":0.0001947,"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/T11757","display_name":"Seismic Waves and Analysis","value":0.000148,"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/T13067","display_name":"Geological Modeling and Analysis","value":8.27e-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/T10572","display_name":"Geophysical and Geoelectrical Methods","value":2.79e-05,"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/T11801","display_name":"Reservoir Engineering and Simulation Methods","value":2.42e-05,"subfield":{"id":"https://openalex.org/subfields/2103","display_name":"Fuel Technology"},"field":{"id":"https://openalex.org/fields/21","display_name":"Energy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"x_concepts":[{"id":"127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","score":0.9370517730712891},{"id":"41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","score":0.7604936361312866},{"id":"165205528","wikidata":"https://www.wikidata.org/wiki/Q83371","display_name":"Seismology","score":0.6658397316932678},{"id":"121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","score":0.5565999746322632},{"id":"33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","score":0.397599995136261}],"counts_by_year":[{"year":1973,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1975,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1977,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1979,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1981,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1983,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1984,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1985,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1990,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1992,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1994,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1995,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1996,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1998,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1999,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2000,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2002,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2003,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2005,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2006,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2007,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2009,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2010,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2011,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":44},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":24},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":34},{"year":2015,"works_count":1,"oa_works_count":0,"cited_by_count":27},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":21},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":37},{"year":2018,"works_count":1,"oa_works_count":0,"cited_by_count":41},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":37},{"year":2020,"works_count":1,"oa_works_count":0,"cited_by_count":32},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":54},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":14},{"year":2023,"works_count":8,"oa_works_count":8,"cited_by_count":13},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":13},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":30},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":11}],"display_name_alternatives":["Gjoystdal, H.","H. GJ\u00d8YSTDAL","H. Gjoeystdal","H. Gjoystdal","H. Gj\u00f8ystdal","Havar Gjoystdal","H\u00e5var Gj\u00f8ystdal"],"block_key":"h gjoystdal","works_api_url":"https://api.openalex.org/works?filter=author.id:A5084319832","updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}