{"id":"https://openalex.org/W4383220335","doi":"https://doi.org/10.1109/lgrs.2023.3292593","title":"An Extreme Value Analysis of Long-Term GNSS Ionospheric Total Electron Content Data Observed at Japan Grid Point Location (34.95\u00b0 N and 134.05\u00b0 E)","display_name":"An Extreme Value Analysis of Long-Term GNSS Ionospheric Total Electron Content Data Observed at Japan Grid Point Location (34.95\u00b0 N and 134.05\u00b0 E)","publication_year":2023,"publication_date":"2023-01-01","ids":{"openalex":"https://openalex.org/W4383220335","doi":"https://doi.org/10.1109/lgrs.2023.3292593"},"language":"en","primary_location":{"id":"doi:10.1109/lgrs.2023.3292593","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lgrs.2023.3292593","pdf_url":null,"source":{"id":"https://openalex.org/S126920919","display_name":"IEEE Geoscience and Remote Sensing Letters","issn_l":"1545-598X","issn":["1545-598X","1558-0571"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Geoscience and Remote Sensing Letters","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5046446143","display_name":"Suneetha Emmela","orcid":"https://orcid.org/0009-0007-4406-0215"},"institutions":[{"id":"https://openalex.org/I875944469","display_name":"Koneru Lakshmaiah Education Foundation","ror":"https://ror.org/02k949197","country_code":"IN","type":"education","lineage":["https://openalex.org/I875944469"]}],"countries":["IN"],"is_corresponding":true,"raw_author_name":"Suneetha Emmela","raw_affiliation_strings":["Department of ECE, KLEF Deemed to be University, Vaddeswaram, Guntur, Japan"],"affiliations":[{"raw_affiliation_string":"Department of ECE, KLEF Deemed to be University, Vaddeswaram, Guntur, Japan","institution_ids":["https://openalex.org/I875944469"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006912906","display_name":"D. Venkata Ratnam","orcid":"https://orcid.org/0000-0003-2222-2117"},"institutions":[{"id":"https://openalex.org/I875944469","display_name":"Koneru Lakshmaiah Education Foundation","ror":"https://ror.org/02k949197","country_code":"IN","type":"education","lineage":["https://openalex.org/I875944469"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"D. Venkata Ratnam","raw_affiliation_strings":["Department of ECE, KLEF Deemed to be University, Vaddeswaram, Guntur, Japan"],"affiliations":[{"raw_affiliation_string":"Department of ECE, KLEF Deemed to be University, Vaddeswaram, Guntur, Japan","institution_ids":["https://openalex.org/I875944469"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103187650","display_name":"Yuichi Otsuka","orcid":"https://orcid.org/0000-0002-3098-3859"},"institutions":[{"id":"https://openalex.org/I60134161","display_name":"Nagoya University","ror":"https://ror.org/04chrp450","country_code":"JP","type":"education","lineage":["https://openalex.org/I60134161"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yuichi Otsuka","raw_affiliation_strings":["Institute for Earth-Space Environmental Research (ISEE), Nagoya University, Nagoya, Japan"],"affiliations":[{"raw_affiliation_string":"Institute for Earth-Space Environmental Research (ISEE), Nagoya University, Nagoya, Japan","institution_ids":["https://openalex.org/I60134161"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028584660","display_name":"Atsuki Shinbori","orcid":"https://orcid.org/0000-0002-6018-7431"},"institutions":[{"id":"https://openalex.org/I60134161","display_name":"Nagoya University","ror":"https://ror.org/04chrp450","country_code":"JP","type":"education","lineage":["https://openalex.org/I60134161"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Atsuki Shinbori","raw_affiliation_strings":["Institute for Earth-Space Environmental Research (ISEE), Nagoya University, Nagoya, Japan"],"affiliations":[{"raw_affiliation_string":"Institute for Earth-Space Environmental Research (ISEE), Nagoya University, Nagoya, Japan","institution_ids":["https://openalex.org/I60134161"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079497136","display_name":"Takuya Sori","orcid":"https://orcid.org/0000-0001-6354-4417"},"institutions":[{"id":"https://openalex.org/I60134161","display_name":"Nagoya University","ror":"https://ror.org/04chrp450","country_code":"JP","type":"education","lineage":["https://openalex.org/I60134161"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takuya Sori","raw_affiliation_strings":["Institute for Earth-Space Environmental Research (ISEE), Nagoya University, Nagoya, Japan"],"affiliations":[{"raw_affiliation_string":"Institute for Earth-Space Environmental Research (ISEE), Nagoya University, Nagoya, Japan","institution_ids":["https://openalex.org/I60134161"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5091315263","display_name":"Michi Nishioka","orcid":"https://orcid.org/0000-0001-7147-5933"},"institutions":[{"id":"https://openalex.org/I90023481","display_name":"National Institute of Information and Communications Technology","ror":"https://ror.org/016bgq349","country_code":"JP","type":"facility","lineage":["https://openalex.org/I90023481"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Michi Nishioka","raw_affiliation_strings":["National Institute of Information and Communications Technology (NICT), Tokyo, Japan"],"affiliations":[{"raw_affiliation_string":"National Institute of Information and Communications Technology (NICT), Tokyo, Japan","institution_ids":["https://openalex.org/I90023481"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5031814720","display_name":"Septi Perwitasari","orcid":"https://orcid.org/0000-0002-5108-0077"},"institutions":[{"id":"https://openalex.org/I90023481","display_name":"National Institute of Information and Communications Technology","ror":"https://ror.org/016bgq349","country_code":"JP","type":"facility","lineage":["https://openalex.org/I90023481"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Septi Perwitasari","raw_affiliation_strings":["National Institute of Information and Communications Technology (NICT), Tokyo, Japan"],"affiliations":[{"raw_affiliation_string":"National Institute of Information and Communications Technology (NICT), Tokyo, Japan","institution_ids":["https://openalex.org/I90023481"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":7,"corresponding_author_ids":["https://openalex.org/A5046446143"],"corresponding_institution_ids":["https://openalex.org/I875944469"],"apc_list":null,"apc_paid":null,"fwci":0.1833,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.5721393,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":95},"biblio":{"volume":"20","issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10159","display_name":"Ionosphere and magnetosphere dynamics","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10159","display_name":"Ionosphere and magnetosphere dynamics","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12424","display_name":"Earthquake Detection and Analysis","score":0.9990000128746033,"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/T10655","display_name":"GNSS positioning and interference","score":0.9980999827384949,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/tec","display_name":"TEC","score":0.8638705611228943},{"id":"https://openalex.org/keywords/space-weather","display_name":"Space weather","score":0.6738333702087402},{"id":"https://openalex.org/keywords/gnss-applications","display_name":"GNSS applications","score":0.6535586714744568},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.6125210523605347},{"id":"https://openalex.org/keywords/total-electron-content","display_name":"Total electron content","score":0.5766234397888184},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.5020606517791748},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.44596022367477417},{"id":"https://openalex.org/keywords/global-positioning-system","display_name":"Global Positioning System","score":0.43844375014305115},{"id":"https://openalex.org/keywords/confidence-interval","display_name":"Confidence interval","score":0.41845622658729553},{"id":"https://openalex.org/keywords/ionosphere","display_name":"Ionosphere","score":0.36422109603881836},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.2824435234069824},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.25908204913139343},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.21508851647377014},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.21056267619132996},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.14262807369232178},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.09185874462127686},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.09162145853042603}],"concepts":[{"id":"https://openalex.org/C176379880","wikidata":"https://www.wikidata.org/wiki/Q18031939","display_name":"TEC","level":3,"score":0.8638705611228943},{"id":"https://openalex.org/C151325931","wikidata":"https://www.wikidata.org/wiki/Q584093","display_name":"Space weather","level":2,"score":0.6738333702087402},{"id":"https://openalex.org/C14279187","wikidata":"https://www.wikidata.org/wiki/Q5514012","display_name":"GNSS applications","level":3,"score":0.6535586714744568},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.6125210523605347},{"id":"https://openalex.org/C165391973","wikidata":"https://www.wikidata.org/wiki/Q844304","display_name":"Total electron content","level":4,"score":0.5766234397888184},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.5020606517791748},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.44596022367477417},{"id":"https://openalex.org/C60229501","wikidata":"https://www.wikidata.org/wiki/Q18822","display_name":"Global Positioning System","level":2,"score":0.43844375014305115},{"id":"https://openalex.org/C44249647","wikidata":"https://www.wikidata.org/wiki/Q208498","display_name":"Confidence interval","level":2,"score":0.41845622658729553},{"id":"https://openalex.org/C116403925","wikidata":"https://www.wikidata.org/wiki/Q162219","display_name":"Ionosphere","level":2,"score":0.36422109603881836},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.2824435234069824},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.25908204913139343},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.21508851647377014},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.21056267619132996},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.14262807369232178},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.09185874462127686},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.09162145853042603},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0},{"id":"https://openalex.org/C8058405","wikidata":"https://www.wikidata.org/wiki/Q46255","display_name":"Geophysics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lgrs.2023.3292593","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lgrs.2023.3292593","pdf_url":null,"source":{"id":"https://openalex.org/S126920919","display_name":"IEEE Geoscience and Remote Sensing Letters","issn_l":"1545-598X","issn":["1545-598X","1558-0571"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Geoscience and Remote Sensing Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/9","display_name":"Industry, innovation and infrastructure","score":0.6499999761581421}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":25,"referenced_works":["https://openalex.org/W178405716","https://openalex.org/W1500657154","https://openalex.org/W1529425827","https://openalex.org/W1595732180","https://openalex.org/W1825915314","https://openalex.org/W1963995057","https://openalex.org/W1965302626","https://openalex.org/W2005908215","https://openalex.org/W2063406155","https://openalex.org/W2068745730","https://openalex.org/W2082075185","https://openalex.org/W2122456939","https://openalex.org/W2562647817","https://openalex.org/W2903185249","https://openalex.org/W2963046306","https://openalex.org/W3022387298","https://openalex.org/W3104436423","https://openalex.org/W3110293969","https://openalex.org/W3121942315","https://openalex.org/W3165507178","https://openalex.org/W4206335714","https://openalex.org/W4213352419","https://openalex.org/W4230317217","https://openalex.org/W4236154753","https://openalex.org/W6607320043"],"related_works":["https://openalex.org/W3012062545","https://openalex.org/W4390484789","https://openalex.org/W2280162962","https://openalex.org/W2281447254","https://openalex.org/W2536398560","https://openalex.org/W2170328996","https://openalex.org/W1989070650","https://openalex.org/W2550010074","https://openalex.org/W2770061914","https://openalex.org/W1992137669"],"abstract_inverted_index":{"Space":[0],"weather":[1],"adversely":[2],"affects":[3],"the":[4,9,17,72,106,118,145,159,180],"satellite":[5],"systems":[6],"by":[7,51,149],"obstructing":[8],"services":[10],"of":[11,19,38,59,88,141,164,218,232,240],"Global":[12],"Positioning":[13],"Systems":[14],"(GPS),":[15],"delaying":[16],"launch":[18],"space":[20],"vehicles,":[21],"and":[22,31,57,68,100,102,134,161,172,190,198,207,236],"causing":[23],"damage":[24],"to":[25,71,117,122,144,222],"basic":[26],"infrastructures":[27],"such":[28],"as":[29,170],"radio-communications":[30],"power":[32],"distribution":[33,114],"networks.":[34],"The":[35,176],"spatio-temporal":[36],"variations":[37],"ionospheric":[39],"Total":[40],"Electron":[41],"Content":[42],"(TEC)":[43],"during":[44],"geomagnetic":[45,124],"storms":[46],"can":[47],"be":[48],"well":[49],"examined":[50],"extreme":[52,60,79,111,182],"value":[53,112],"analysis.":[54],"Statistical":[55],"assessment":[56,67],"analysis":[58],"values":[61],"are":[62,82,168,193],"necessary":[63],"for":[64,155,166,184,204,228,245],"developing":[65],"risk":[66],"mitigation":[69],"strategies":[70],"affected":[73],"communication":[74],"systems.":[75],"In":[76,105],"this":[77],"study,":[78],"TEC":[80,91,121,167,209,247],"events":[81],"investigated":[83],"using":[84],"25":[85],"years":[86,136,192,235,244],"(1997-2021)":[87],"long-term":[89],"GEONET":[90],"data":[92,210],"over":[93,224],"Japan":[94],"grid":[95,205,226],"point":[96,206,227],"location":[97],"at":[98],"34.95\u00b0N":[99],"134.05\u00b0E,":[101],"global":[103,208,246],"data.":[104,248],"present":[107],"work,":[108],"a":[109,138,214,229],"generalized":[110],"(GEV)":[113],"is":[115,220],"applied":[116],"annual":[119],"maxima":[120],"evaluate":[123],"disturbances":[125],"that":[126,179],"could":[127],"occur":[128],"once":[129],"in":[130,186],"44,":[131,187],"88,":[132,188],"132,":[133,189],"176":[135,191],"with":[137],"confidence":[139],"interval":[140],"95%.":[142],"According":[143],"reference":[146],"thresholds":[147],"indicated":[148],"International":[150],"Civil":[151],"Aviation":[152],"Organization":[153],"(ICAO)":[154],"safer":[156],"aviation":[157],"applications,":[158],"moderate":[160,215],"severe":[162,237],"levels":[163],"threshold":[165,216,238],"identified":[169],"125":[171],"175":[173],"TECU,":[174],"respectively.":[175,211],"results":[177],"illustrate":[178],"estimated":[181],"TECs":[183],"one":[185],"119,":[194],"125,":[195],"128,":[196],"130":[197],"215,":[199],"220,":[200],"222,":[201],"225":[202],"TECU":[203],"That":[212],"is,":[213],"level":[217,239],"activity":[219,241],"likely":[221],"happen":[223],"considered":[225],"return":[230],"period":[231],"beyond":[233,242],"88":[234],"11":[243]},"counts_by_year":[{"year":2025,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
