{"id":"https://openalex.org/W4402133411","doi":"https://doi.org/10.3390/rs16173243","title":"Local Gravity and Geoid Improvements around the Gavdos Satellite Altimetry Cal/Val Site","display_name":"Local Gravity and Geoid Improvements around the Gavdos Satellite Altimetry Cal/Val Site","publication_year":2024,"publication_date":"2024-09-01","ids":{"openalex":"https://openalex.org/W4402133411","doi":"https://doi.org/10.3390/rs16173243"},"language":"en","primary_location":{"id":"doi:10.3390/rs16173243","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs16173243","pdf_url":"https://www.mdpi.com/2072-4292/16/17/3243/pdf?version=1725182289","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2072-4292/16/17/3243/pdf?version=1725182289","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5090703085","display_name":"Georgios S. Vergos","orcid":"https://orcid.org/0000-0003-2475-2568"},"institutions":[{"id":"https://openalex.org/I21370196","display_name":"Aristotle University of Thessaloniki","ror":"https://ror.org/02j61yw88","country_code":"GR","type":"education","lineage":["https://openalex.org/I21370196"]}],"countries":["GR"],"is_corresponding":true,"raw_author_name":"Georgios S. Vergos","raw_affiliation_strings":["Laboratory of Gravity Field Research and Applications (GravLab), Department of Geodesy and Surveying, Aristotle University of Thessaloniki, University Box 440, GR-54124 Thessaloniki, Greece"],"affiliations":[{"raw_affiliation_string":"Laboratory of Gravity Field Research and Applications (GravLab), Department of Geodesy and Surveying, Aristotle University of Thessaloniki, University Box 440, GR-54124 Thessaloniki, Greece","institution_ids":["https://openalex.org/I21370196"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5038232930","display_name":"I. N. Tziavos","orcid":"https://orcid.org/0000-0002-3797-8016"},"institutions":[{"id":"https://openalex.org/I21370196","display_name":"Aristotle University of Thessaloniki","ror":"https://ror.org/02j61yw88","country_code":"GR","type":"education","lineage":["https://openalex.org/I21370196"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Ilias N. Tziavos","raw_affiliation_strings":["Laboratory of Gravity Field Research and Applications (GravLab), Department of Geodesy and Surveying, Aristotle University of Thessaloniki, University Box 440, GR-54124 Thessaloniki, Greece"],"affiliations":[{"raw_affiliation_string":"Laboratory of Gravity Field Research and Applications (GravLab), Department of Geodesy and Surveying, Aristotle University of Thessaloniki, University Box 440, GR-54124 Thessaloniki, Greece","institution_ids":["https://openalex.org/I21370196"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060458419","display_name":"Stelios P. Mertikas","orcid":"https://orcid.org/0000-0002-1037-7376"},"institutions":[{"id":"https://openalex.org/I55741626","display_name":"Technical University of Crete","ror":"https://ror.org/03f8bz564","country_code":"GR","type":"education","lineage":["https://openalex.org/I55741626"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Stelios Mertikas","raw_affiliation_strings":["Geodesy and Geomatics Engineering Lab, Technical University of Crete, GR-73100 Chania, Greece"],"affiliations":[{"raw_affiliation_string":"Geodesy and Geomatics Engineering Lab, Technical University of Crete, GR-73100 Chania, Greece","institution_ids":["https://openalex.org/I55741626"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5023877359","display_name":"Dimitrios Piretzidis","orcid":"https://orcid.org/0000-0003-0148-8063"},"institutions":[{"id":"https://openalex.org/I4210108479","display_name":"Space Hellas (Greece)","ror":"https://ror.org/01nx9mw61","country_code":"GR","type":"company","lineage":["https://openalex.org/I4210108479"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Dimitrios Piretzidis","raw_affiliation_strings":["Space Geomatica P.C., Xanthoudidou 10A, GR-73134 Chania, Greece"],"affiliations":[{"raw_affiliation_string":"Space Geomatica P.C., Xanthoudidou 10A, GR-73134 Chania, Greece","institution_ids":["https://openalex.org/I4210108479"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056961239","display_name":"X. Frantzis","orcid":"https://orcid.org/0000-0002-2549-0566"},"institutions":[{"id":"https://openalex.org/I55741626","display_name":"Technical University of Crete","ror":"https://ror.org/03f8bz564","country_code":"GR","type":"education","lineage":["https://openalex.org/I55741626"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Xenofon Frantzis","raw_affiliation_strings":["Geodesy and Geomatics Engineering Lab, Technical University of Crete, GR-73100 Chania, Greece"],"affiliations":[{"raw_affiliation_string":"Geodesy and Geomatics Engineering Lab, Technical University of Crete, GR-73100 Chania, Greece","institution_ids":["https://openalex.org/I55741626"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5055769454","display_name":"Craig Donlon","orcid":"https://orcid.org/0000-0002-7359-0115"},"institutions":[{"id":"https://openalex.org/I44377176","display_name":"European Space Research and Technology Centre","ror":"https://ror.org/03h3jqn23","country_code":"NL","type":"government","lineage":["https://openalex.org/I2801994115","https://openalex.org/I44377176"]}],"countries":["NL"],"is_corresponding":false,"raw_author_name":"Craig Donlon","raw_affiliation_strings":["European Space Agency ESA/ESTEC, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands"],"affiliations":[{"raw_affiliation_string":"European Space Agency ESA/ESTEC, Keplerlaan 1, 2201 AZ Noordwijk, The Netherlands","institution_ids":["https://openalex.org/I44377176"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5090703085"],"corresponding_institution_ids":["https://openalex.org/I21370196"],"apc_list":{"value":2500,"currency":"CHF","value_usd":2707},"apc_paid":{"value":2500,"currency":"CHF","value_usd":2707},"fwci":1.4711,"has_fulltext":true,"cited_by_count":3,"citation_normalized_percentile":{"value":0.80631434,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":95,"max":99},"biblio":{"volume":"16","issue":"17","first_page":"3243","last_page":"3243"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11405","display_name":"Geophysics and Gravity Measurements","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1910","display_name":"Oceanography"},"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/T11405","display_name":"Geophysics and Gravity Measurements","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1910","display_name":"Oceanography"},"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/T11786","display_name":"Geomagnetism and Paleomagnetism Studies","score":0.9962999820709229,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10655","display_name":"GNSS positioning and interference","score":0.9955000281333923,"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/geoid","display_name":"Geoid","score":0.7935107946395874},{"id":"https://openalex.org/keywords/geodesy","display_name":"Geodesy","score":0.7546267509460449},{"id":"https://openalex.org/keywords/satellite-altimetry","display_name":"Satellite altimetry","score":0.6170604228973389},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.5606369972229004},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.4714035987854004},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.3833867311477661},{"id":"https://openalex.org/keywords/altimeter","display_name":"Altimeter","score":0.3345105051994324},{"id":"https://openalex.org/keywords/geophysics","display_name":"Geophysics","score":0.21649840474128723},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.15305760502815247},{"id":"https://openalex.org/keywords/astronomy","display_name":"Astronomy","score":0.05479857325553894}],"concepts":[{"id":"https://openalex.org/C80989030","wikidata":"https://www.wikidata.org/wiki/Q185969","display_name":"Geoid","level":3,"score":0.7935107946395874},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.7546267509460449},{"id":"https://openalex.org/C2989451103","wikidata":"https://www.wikidata.org/wiki/Q1928951","display_name":"Satellite altimetry","level":3,"score":0.6170604228973389},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.5606369972229004},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.4714035987854004},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.3833867311477661},{"id":"https://openalex.org/C17534553","wikidata":"https://www.wikidata.org/wiki/Q216197","display_name":"Altimeter","level":2,"score":0.3345105051994324},{"id":"https://openalex.org/C8058405","wikidata":"https://www.wikidata.org/wiki/Q46255","display_name":"Geophysics","level":1,"score":0.21649840474128723},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.15305760502815247},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.05479857325553894},{"id":"https://openalex.org/C113346285","wikidata":"https://www.wikidata.org/wiki/Q6804193","display_name":"Measured depth","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.3390/rs16173243","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs16173243","pdf_url":"https://www.mdpi.com/2072-4292/16/17/3243/pdf?version=1725182289","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:b939c95d83cb4737b9687f661815dbf7","is_oa":true,"landing_page_url":"https://doaj.org/article/b939c95d83cb4737b9687f661815dbf7","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Remote Sensing, Vol 16, Iss 17, p 3243 (2024)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.3390/rs16173243","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs16173243","pdf_url":"https://www.mdpi.com/2072-4292/16/17/3243/pdf?version=1725182289","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/14","display_name":"Life below water","score":0.8799999952316284}],"awards":[{"id":"https://openalex.org/G7741037041","display_name":null,"funder_award_id":"4000129892/20/NL/FF/ab","funder_id":"https://openalex.org/F4320318240","funder_display_name":"European Space Agency"}],"funders":[{"id":"https://openalex.org/F4320318240","display_name":"European Space Agency","ror":"https://ror.org/03wd9za21"},{"id":"https://openalex.org/F4320321519","display_name":"Centre National d\u2019Etudes Spatiales","ror":"https://ror.org/04h1h0y33"}],"has_content":{"pdf":true,"grobid_xml":false},"content_urls":{"pdf":"https://content.openalex.org/works/W4402133411.pdf"},"referenced_works_count":51,"referenced_works":["https://openalex.org/W151548834","https://openalex.org/W172511913","https://openalex.org/W180344010","https://openalex.org/W611864775","https://openalex.org/W1511720900","https://openalex.org/W1530454118","https://openalex.org/W1595287361","https://openalex.org/W1661453488","https://openalex.org/W1973333448","https://openalex.org/W1980531790","https://openalex.org/W1993093094","https://openalex.org/W2002325965","https://openalex.org/W2003770914","https://openalex.org/W2024472179","https://openalex.org/W2047018904","https://openalex.org/W2053987409","https://openalex.org/W2090714977","https://openalex.org/W2104549464","https://openalex.org/W2112220675","https://openalex.org/W2123685048","https://openalex.org/W2167703270","https://openalex.org/W2187432880","https://openalex.org/W2224487128","https://openalex.org/W2501191505","https://openalex.org/W2518488457","https://openalex.org/W2532519059","https://openalex.org/W2605092024","https://openalex.org/W2750352247","https://openalex.org/W2769035919","https://openalex.org/W2800455556","https://openalex.org/W2892624168","https://openalex.org/W2900986284","https://openalex.org/W2923493795","https://openalex.org/W2989708060","https://openalex.org/W3041833575","https://openalex.org/W3044870978","https://openalex.org/W3156025714","https://openalex.org/W4232368692","https://openalex.org/W4234985135","https://openalex.org/W4248081507","https://openalex.org/W4255340434","https://openalex.org/W4320491831","https://openalex.org/W4386332495","https://openalex.org/W4386458028","https://openalex.org/W4386923482","https://openalex.org/W4390617391","https://openalex.org/W4399032615","https://openalex.org/W4400492787","https://openalex.org/W4403503036","https://openalex.org/W6723917584","https://openalex.org/W6726547395"],"related_works":["https://openalex.org/W2036192530","https://openalex.org/W1525454026","https://openalex.org/W3026411649","https://openalex.org/W3210340099","https://openalex.org/W121385226","https://openalex.org/W4319794883","https://openalex.org/W2892210291","https://openalex.org/W1494504062","https://openalex.org/W1529812919","https://openalex.org/W2358154721"],"abstract_inverted_index":{"The":[0,42,108,134,155,249,281,335,447],"isle":[1,135,204],"of":[2,10,20,49,62,98,105,110,119,123,129,136,152,158,174,189,205,217,238,256,276,308,358,363,383,420,432,465,475],"Gavdos,":[3],"and":[4,18,39,84,90,100,125,161,178,214,240,260,288,321,327,329,349,373,400,441,453],"its":[5,101,167],"wider":[6,266],"area,":[7,268],"is":[8,104,247],"one":[9],"the":[11,16,28,47,50,53,60,96,117,159,162,172,175,179,185,187,190,203,211,218,235,244,254,265,274,277,305,309,318,333,340,356,359,364,381,384,386,396,404,407,413,421,425,433,437,444,466,469,495],"few":[12],"places":[13],"worldwide":[14],"where":[15,220,243],"calibration":[17,44],"validation":[19],"altimetric":[21,279],"satellites":[22],"has":[23,314,368,391],"been":[24,227,286,315,369,392],"carried":[25,289],"out":[26,290],"during":[27],"last,":[29],"more":[30],"than,":[31],"two":[32],"decades":[33],"using":[34,394],"dedicated":[35],"techniques":[36],"at":[37],"sea":[38],"on":[40,59,253,273,317,339,371],"land.":[41],"sea-surface":[43,56],"employed":[45,393],"for":[46,264,332,355,380,480],"determination":[48,173,255,275,313],"bias":[51],"in":[52,66,95,116,121,127,166,207,418,463],"satellite":[54,76],"altimeter\u2019s":[55],"height":[57],"relies":[58],"use":[61],"a":[63,88,112,181,257,292],"gravimetric":[64,92,262],"geoid":[65,93,113,180,263,409,471],"collocation":[67,347],"with":[68,142,298],"data":[69,201,427],"from":[70],"tide":[71],"gauges,":[72],"permanent":[73],"global":[74,375],"navigation":[75],"system":[77],"(GNSS)":[78],"receivers,":[79],"as":[80,82,231,233,482,484],"well":[81],"meteorological":[83],"oceanographic":[85],"sensors.":[86],"Hence,":[87],"high-accuracy":[89,261],"high-resolution":[91],"model":[94,114,389,410],"vicinity":[97],"Gavdos":[99,137,206,239,267],"surrounding":[102,168],"area":[103],"vital":[106],"importance.":[107],"existence":[109],"such":[111],"resides":[115],"availability":[118],"reliable,":[120],"terms":[122,128,419,464],"accuracy,":[124],"dense,":[126],"spatial":[130,150],"resolution,":[131],"gravity":[132,176,200,224,283,295,323],"data.":[133],"presents":[138],"varying":[139],"topographic":[140,245],"characteristics":[141],"heights":[143],"larger":[144],"than":[145],"400":[146],"m":[147],"within":[148],"small":[149,156],"distances":[151],"~7":[153],"km.":[154],"size":[157],"island":[160,219,237],"significant":[163],"bathymetric":[164],"variations":[165],"marine":[169],"regions":[170],"make":[171],"field":[177],"challenging":[182],"task.":[183],"Given":[184],"above,":[186],"objective":[188],"present":[191],"work":[192],"was":[193,252,337],"two-fold.":[194],"First,":[195],"to":[196,209,229,303,424,451,459,489],"collect":[197],"new":[198],"land":[199],"over":[202],"order":[208],"complete":[210],"existing":[212],"database":[213],"cover":[215,230],"parts":[216],"voids":[221],"existed.":[222],"Relative":[223],"campaigns":[225,284],"have":[226,285],"designed":[228,287],"homogenously":[232],"possible":[234],"entire":[236],"especially":[241],"areas":[242],"gradient":[246],"large.":[248],"second":[250],"focus":[251],"high-resolution,":[258],"1\u2032\u00d71\u2032,":[259],"which":[269,487],"will":[270],"support":[271],"activities":[272],"absolute":[278,422],"bias.":[280],"relative":[282,294,467,473],"employing":[291,345],"CG5":[293],"meter":[296],"along":[297],"geodetic":[299,306],"grade":[300],"GNSS":[301],"receivers":[302],"determine":[304],"position":[307],"acquired":[310,320],"observations.":[311],"Geoid":[312],"based":[316,338,370],"newly":[319],"historical":[322],"data,":[324,461],"GNSS/Leveling":[325,426,460],"observations,":[326],"topography":[328],"bathymetry":[330],"databases":[331],"region.":[334],"modeling":[336],"well-known":[341],"remove\u2013compute\u2013restore":[342],"(RCR)":[343],"method,":[344],"least-squares":[346],"(LSC)":[348],"fast":[350],"Fourier":[351],"transform":[352],"(FFT)":[353],"methods":[354],"evaluation":[357],"Stokes\u2019":[360],"integral.":[361],"Modeling":[362],"long":[365],"wavelength":[366],"contribution":[367,382],"EIGEN6c4":[372],"XGM2019e":[374],"geopotential":[376],"models":[377],"(GGMs),":[378],"while":[379,417,462],"topography,":[385],"residual":[387],"terrain":[388],"correction":[390],"both":[395],"classical,":[397],"space":[398],"domain,":[399],"spectral":[401],"approaches.":[402],"From":[403],"results":[405],"achieved,":[406],"final":[408,470],"accuracy":[411],"reached":[412],"\u00b11\u20133":[414],"cm":[415],"level,":[416],"differences":[423,434],"per":[428],"baseline":[429],"length,":[430],"28.4%":[431],"were":[435],"below":[436,443],"1cmSij":[438],"[km]":[439],"level":[440],"55.2%":[442],"2cmSij":[445],"[km].":[446],"latter":[448],"improved":[449],"drastically":[450],"52.8%":[452],"81.1%,":[454],"respectively,":[455],"after":[456,494],"deterministic":[457],"fit":[458],"differences,":[468],"reaches":[472],"uncertainties":[474],"11.58":[476],"ppm":[477,491],"(\u00b11.2":[478],"cm)":[479,493],"baselines":[481],"short":[483],"0\u201310":[485],"km,":[486],"improves":[488],"10.63":[490],"(\u00b11.1":[492],"fit.":[496]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}
