{"id":"https://openalex.org/W7225316440","doi":"https://doi.org/10.22541/essoar.15011752/v1","title":"Comment on \u2018High Frequency Radar Perspective of Putative Subglacial Liquid Water on Mars\u2019 by Morgan et al. (2025)","display_name":"Comment on \u2018High Frequency Radar Perspective of Putative Subglacial Liquid Water on Mars\u2019 by Morgan et al. (2025)","publication_year":2026,"publication_date":"2026-11-05","ids":{"openalex":"https://openalex.org/W7225316440","doi":"https://doi.org/10.22541/essoar.15011752/v1"},"language":"en","primary_location":{"id":"doi:10.22541/essoar.15011752/v1","doi":"https://doi.org/10.22541/essoar.15011752/v1","is_oa":false,"landing_page_url":"https://doi.org/10.22541/essoar.15011752/v1","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"posted-content"},"volume":null,"type":"preprint","is_traditional":true,"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/A5086168960","display_name":"R. Orosei","orcid":"https://orcid.org/0000-0003-1277-1294","observed_orcids":["https://orcid.org/0000-0003-1277-1294"]},"institutions":[{"id":"https://openalex.org/I4210115661","display_name":"Istituto di Radioastronomia di Bologna","ror":"https://ror.org/029st3z03","country_code":"IT","type":"nonprofit","lineage":["https://openalex.org/I4210115661","https://openalex.org/I875825670"]},{"id":"https://openalex.org/I875825670","display_name":"National Institute for Astrophysics","ror":"https://ror.org/02gh4kt33","country_code":"IT","type":"government","lineage":["https://openalex.org/I875825670"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Roberto Orosei","raw_affiliation_strings":["Istituto Nazionale di Astrofisica, Istituto di Radioastronomia"],"raw_orcid":"https://orcid.org/0000-0003-1277-1294","affiliations":[{"raw_affiliation_string":"Istituto Nazionale di Astrofisica, Istituto di Radioastronomia","institution_ids":["https://openalex.org/I4210115661","https://openalex.org/I875825670"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5072971527","display_name":"Graziella Caprarelli","orcid":"https://orcid.org/0000-0001-9578-3228","observed_orcids":["https://orcid.org/0000-0001-9578-3228"]},"institutions":[{"id":"https://openalex.org/I185523456","display_name":"University of Southern Queensland","ror":"https://ror.org/04sjbnx57","country_code":"AU","type":"education","lineage":["https://openalex.org/I185523456"]},{"id":"https://openalex.org/I4210115661","display_name":"Istituto di Radioastronomia di Bologna","ror":"https://ror.org/029st3z03","country_code":"IT","type":"nonprofit","lineage":["https://openalex.org/I4210115661","https://openalex.org/I875825670"]},{"id":"https://openalex.org/I875825670","display_name":"National Institute for Astrophysics","ror":"https://ror.org/02gh4kt33","country_code":"IT","type":"government","lineage":["https://openalex.org/I875825670"]}],"countries":["AU","IT"],"is_corresponding":false,"raw_author_name":"Graziella Caprarelli","raw_affiliation_strings":["Centre for Astrophysics","Istituto Nazionale di Astrofisica, Istituto di Radioastronomia","University of Southern Queensland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centre for Astrophysics","institution_ids":[]},{"raw_affiliation_string":"Istituto Nazionale di Astrofisica, Istituto di Radioastronomia","institution_ids":["https://openalex.org/I4210115661","https://openalex.org/I875825670"]},{"raw_affiliation_string":"University of Southern Queensland","institution_ids":["https://openalex.org/I185523456"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017593493","display_name":"Sebastian Emanuel Lauro","orcid":"https://orcid.org/0000-0002-9839-1868","observed_orcids":["https://orcid.org/0000-0002-9839-1868"]},"institutions":[{"id":"https://openalex.org/I119003972","display_name":"Roma Tre University","ror":"https://ror.org/05vf0dg29","country_code":"IT","type":"education","lineage":["https://openalex.org/I119003972"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Sebastian Lauro","raw_affiliation_strings":["Dipartimento di Matematica e Fisica","Universita\u0300 degli studi Roma Tre"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dipartimento di Matematica e Fisica","institution_ids":[]},{"raw_affiliation_string":"Universita\u0300 degli studi Roma Tre","institution_ids":["https://openalex.org/I119003972"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5008320005","display_name":"David E. Stillman","orcid":"https://orcid.org/0000-0002-2159-9177","observed_orcids":["https://orcid.org/0000-0002-2159-9177"]},"institutions":[{"id":"https://openalex.org/I1290463931","display_name":"Southwest Research Institute","ror":"https://ror.org/03tghng59","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I1290463931"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"David E. Stillman","raw_affiliation_strings":["Southwest Research Institute"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Southwest Research Institute","institution_ids":["https://openalex.org/I1290463931"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5062876996","display_name":"Elena Pettinelli","orcid":"https://orcid.org/0000-0002-7066-6516","observed_orcids":["https://orcid.org/0000-0002-7066-6516"]},"institutions":[{"id":"https://openalex.org/I119003972","display_name":"Roma Tre University","ror":"https://ror.org/05vf0dg29","country_code":"IT","type":"education","lineage":["https://openalex.org/I119003972"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Elena Pettinelli","raw_affiliation_strings":["Dipartimento di Matematica e Fisica","Universita\u0300 degli studi Roma Tre"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dipartimento di Matematica e Fisica","institution_ids":[]},{"raw_affiliation_string":"Universita\u0300 degli studi Roma Tre","institution_ids":["https://openalex.org/I119003972"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081849411","display_name":"Francesco Soldovieri","orcid":"https://orcid.org/0000-0002-0377-3127","observed_orcids":["https://orcid.org/0000-0002-0377-3127"]},"institutions":[{"id":"https://openalex.org/I4210125249","display_name":"Istituto per il Rilevamento Elettromagnetico dell'Ambiente","ror":"https://ror.org/02wxw4x45","country_code":"IT","type":"facility","lineage":["https://openalex.org/I4210125249","https://openalex.org/I4210155236"]},{"id":"https://openalex.org/I4210155236","display_name":"National Research Council","ror":"https://ror.org/04zaypm56","country_code":"IT","type":"nonprofit","lineage":["https://openalex.org/I4210155236"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Francesco Soldovieri","raw_affiliation_strings":["Consiglio Nazionale delle Ricerche, Istituto per il Rilevamento Elettromagnetico dell\u2019Ambiente"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Consiglio Nazionale delle Ricerche, Istituto per il Rilevamento Elettromagnetico dell\u2019Ambiente","institution_ids":["https://openalex.org/I4210125249","https://openalex.org/I4210155236"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5067896968","display_name":"M. Cartacci","orcid":"https://orcid.org/0000-0001-9825-1817","observed_orcids":["https://orcid.org/0000-0001-9825-1817"]},"institutions":[{"id":"https://openalex.org/I4210100742","display_name":"Institute for Space Astrophysics and Planetology","ror":"https://ror.org/0141xw169","country_code":"IT","type":"facility","lineage":["https://openalex.org/I4210100742","https://openalex.org/I875825670"]},{"id":"https://openalex.org/I875825670","display_name":"National Institute for Astrophysics","ror":"https://ror.org/02gh4kt33","country_code":"IT","type":"government","lineage":["https://openalex.org/I875825670"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Marco Cartacci","raw_affiliation_strings":["Istituto Nazionale di Astrofisica, Istituto di Astrofisica e Planetologia Spaziali"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Istituto Nazionale di Astrofisica, Istituto di Astrofisica e Planetologia Spaziali","institution_ids":["https://openalex.org/I4210100742","https://openalex.org/I875825670"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5018689033","display_name":"A. Cicchetti","orcid":"https://orcid.org/0000-0002-9588-6531","observed_orcids":["https://orcid.org/0000-0002-9588-6531"]},"institutions":[{"id":"https://openalex.org/I4210100742","display_name":"Institute for Space Astrophysics and Planetology","ror":"https://ror.org/0141xw169","country_code":"IT","type":"facility","lineage":["https://openalex.org/I4210100742","https://openalex.org/I875825670"]},{"id":"https://openalex.org/I875825670","display_name":"National Institute for Astrophysics","ror":"https://ror.org/02gh4kt33","country_code":"IT","type":"government","lineage":["https://openalex.org/I875825670"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Andrea Cicchetti","raw_affiliation_strings":["Istituto Nazionale di Astrofisica, Istituto di Astrofisica e Planetologia Spaziali"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Istituto Nazionale di Astrofisica, Istituto di Astrofisica e Planetologia Spaziali","institution_ids":["https://openalex.org/I4210100742","https://openalex.org/I875825670"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":8,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10406","display_name":"Planetary Science and Exploration","score":0.9970999956130981,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary 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"}},"topics":[{"id":"https://openalex.org/T10406","display_name":"Planetary Science and Exploration","score":0.9970999956130981,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary 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/T11609","display_name":"Geophysical Methods and Applications","score":0.0010000000474974513,"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/T10325","display_name":"Astro and Planetary Science","score":0.0007999999797903001,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary 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"}}],"keywords":[{"id":"https://openalex.org/keywords/mars","display_name":"Mars","score":0.765999972820282},{"id":"https://openalex.org/keywords/south-polar-layered-deposits","display_name":"south polar layered deposits","score":0.9190000295639038},{"id":"https://openalex.org/keywords/sharad-radar","display_name":"SHARAD radar","score":0.9350000023841858},{"id":"https://openalex.org/keywords/loss-tangent","display_name":"loss tangent","score":0.8650000095367432}],"concepts":[{"id":"https://openalex.org/C2778600265","wikidata":"https://www.wikidata.org/wiki/Q913850","display_name":"Martian","level":3,"score":0.8406999707221985},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.7986999750137329},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.6977999806404114},{"id":"https://openalex.org/C83260615","wikidata":"https://www.wikidata.org/wiki/Q6773121","display_name":"Mars Exploration Program","level":2,"score":0.5848000049591064},{"id":"https://openalex.org/C2989277613","wikidata":"https://www.wikidata.org/wiki/Q283","display_name":"Liquid water","level":2,"score":0.579200029373169},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.4675999879837036},{"id":"https://openalex.org/C8058405","wikidata":"https://www.wikidata.org/wiki/Q46255","display_name":"Geophysics","level":1,"score":0.43529999256134033},{"id":"https://openalex.org/C1893757","wikidata":"https://www.wikidata.org/wiki/Q3653001","display_name":"Inversion (geology)","level":3,"score":0.43309998512268066},{"id":"https://openalex.org/C71813955","wikidata":"https://www.wikidata.org/wiki/Q503560","display_name":"Ground-penetrating radar","level":3,"score":0.3986000120639801},{"id":"https://openalex.org/C29705727","wikidata":"https://www.wikidata.org/wiki/Q294562","display_name":"Polar","level":2,"score":0.3864000141620636},{"id":"https://openalex.org/C138187205","wikidata":"https://www.wikidata.org/wiki/Q131251","display_name":"Tangent","level":2,"score":0.3239000141620636},{"id":"https://openalex.org/C10929652","wikidata":"https://www.wikidata.org/wiki/Q7279985","display_name":"Radar imaging","level":3,"score":0.32280001044273376},{"id":"https://openalex.org/C12713177","wikidata":"https://www.wikidata.org/wiki/Q1900281","display_name":"Perspective (graphical)","level":2,"score":0.30329999327659607},{"id":"https://openalex.org/C114793014","wikidata":"https://www.wikidata.org/wiki/Q52109","display_name":"Geomorphology","level":1,"score":0.28949999809265137},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.27970001101493835},{"id":"https://openalex.org/C2781162219","wikidata":"https://www.wikidata.org/wiki/Q26250693","display_name":"Replicate","level":2,"score":0.27230000495910645},{"id":"https://openalex.org/C527412718","wikidata":"https://www.wikidata.org/wiki/Q855395","display_name":"Interpretation (philosophy)","level":2,"score":0.2612000107765198},{"id":"https://openalex.org/C107018473","wikidata":"https://www.wikidata.org/wiki/Q52120","display_name":"Glaciology","level":4,"score":0.2551000118255615}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.22541/essoar.15011752/v1","doi":"https://doi.org/10.22541/essoar.15011752/v1","is_oa":false,"landing_page_url":"https://doi.org/10.22541/essoar.15011752/v1","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"posted-content"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W4416279822","https://openalex.org/W4296897290","https://openalex.org/W3105680163","https://openalex.org/W3036107009","https://openalex.org/W3180320542","https://openalex.org/W4313830513","https://openalex.org/W4394865299","https://openalex.org/W4390906417","https://openalex.org/W6996427168","https://openalex.org/W4206987935"],"abstract_inverted_index":{"The":[0],"presence":[1],"of":[2,68,76,91,114,124,193],"liquid":[3,126],"water":[4],"beneath":[5,174,196],"the":[6,21,40,44,77,81,88,92,112,115,175,191,194,197],"Martian":[7,116,176,198],"South":[8,199],"Polar":[9],"Layered":[10],"Deposits":[11],"(SPLD)":[12],"was":[13],"inferred":[14],"from":[15],"strong":[16],"subsurface":[17],"reflections":[18],"detected":[19],"by":[20,39,101],"MARSIS":[22],"radar":[23,42,108,156],"(Orosei":[24],"et":[25,29,103],"al.,":[26],"2018).":[27],"Morgan":[28,102],"al.":[30,104],"(2025)":[31,105],"recently":[32],"reported":[33],"much":[34,130],"weaker":[35],"basal":[36,93],"echoes":[37],"recorded":[38],"SHARAD":[41,69],"over":[43],"same":[45],"area,":[46],"and":[47,50,161],"used":[48,106],"simulations":[49],"signal":[51,185],"inversion":[52],"to":[53,85,110,138,170],"interpret":[54],"them.":[55],"We":[56,64,148],"repeated":[57],"their":[58,140,146,152,165],"computations":[59],"finding":[60],"large,":[61],"irreconcilable":[62],"discrepancies.":[63],"conclude":[65],"that":[66,164],"interpretation":[67],"data":[70,109],"will":[71],"require":[72],"an":[73],"accurate":[74],"determination":[75],"loss":[78,186],"tangent":[79],"in":[80,83,151],"SPLD":[82],"order":[84],"reliably":[86],"estimate":[87],"electromagnetic":[89],"properties":[90],"unit.":[94],"Plain":[95],"Language":[96],"Summary":[97],"A":[98],"recent":[99],"study":[100],"specialized":[107],"analyze":[111],"base":[113],"south":[117],"pole.":[118],"Their":[119],"results":[120],"contradicted":[121],"previous":[122],"findings":[123],"potential":[125],"water,":[127],"suggesting":[128],"a":[129],"drier":[131],"material":[132,195],"instead.":[133],"However,":[134],"when":[135],"we":[136,142,162],"attempted":[137],"replicate":[139],"method,":[141],"could":[143],"not":[144,168],"get":[145],"results.":[147],"identified":[149],"errors":[150],"model":[153],"about":[154,190],"how":[155],"signals":[157],"propagate":[158],"through":[159],"ice":[160],"concluded":[163],"method":[166],"is":[167],"able":[169],"identify":[171],"what":[172],"lies":[173],"surface.":[177],"Future":[178],"research":[179],"must":[180],"more":[181],"accurately":[182],"account":[183],"for":[184],"before":[187],"drawing":[188],"conclusions":[189],"nature":[192],"polar":[200],"deposits.":[201]},"counts_by_year":[],"updated_date":"2026-11-09T13:22:03.289127","created_date":"2026-11-06T00:00:00"}
