The hydrostatic control of load-induced height changes above subglacial Lake Vostok

Lake Vostok, East Antarctica, represents an extensive water surface at the base of the ice sheet. Snow, ice and atmospheric pressure loads applied anywhere within the lake area produce a hydrostatic response, involving deformations of the ice surface, ice-water interface and particle horizons. A mod...

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Autores: Richter, Andreas Jorg, Schröder, Ludwig, Scheinert, Mirko, Popov, Sergey V., Groh, Andreas, Willen, Matthias, Horwath, Martin, Dietrich, Reinhard
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2022
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositório:CONICET Digital (CONICET)
Idioma:inglês
OAI Identifier:oai:ri.conicet.gov.ar:11336/188250
Acesso em linha:http://hdl.handle.net/11336/188250
Access Level:Acceso aberto
Palavra-chave:ICE DYNAMICS
LASER ALTIMETRY
SUBGLACIAL LAKES
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
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repository_id_str
spelling The hydrostatic control of load-induced height changes above subglacial Lake VostokRichter, Andreas JorgSchröder, LudwigScheinert, MirkoPopov, Sergey V.Groh, AndreasWillen, MatthiasHorwath, MartinDietrich, ReinhardICE DYNAMICSLASER ALTIMETRYSUBGLACIAL LAKEShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Lake Vostok, East Antarctica, represents an extensive water surface at the base of the ice sheet. Snow, ice and atmospheric pressure loads applied anywhere within the lake area produce a hydrostatic response, involving deformations of the ice surface, ice-water interface and particle horizons. A modelling scheme is developed to derive height changes of these surfaces for a given load pattern. It is applied to a series of load scenarios, and predictions based on load fields derived from a regional climate model are compared to observational datasets. Our results show that surface height changes due to snow-buildup anomalies are damped over the lake area, reducing the spatial standard deviation by one-third. The response to air pressure variations, in turn, adds surface height variability. Atmospheric pressure loads may produce height changes of up to ±4 cm at daily resolution, but decay rapidly with integration time. The hydrostatic load response has no significant impact neither on ICESat laser campaign biases determined over the lake area nor on vertical particle movements derived from GNSS observations.Fil: Richter, Andreas Jorg. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Cs.astronomicas y Geofisicas. Laboratorio Maggia.; ArgentinaFil: Schröder, Ludwig. Technische Universität Dresden; AlemaniaFil: Scheinert, Mirko. Technische Universität Dresden; AlemaniaFil: Popov, Sergey V.. Polar Marine Geosurvey Expedition; Rusia. Saint Petersburg State University; RusiaFil: Groh, Andreas. Technische Universität Dresden; AlemaniaFil: Willen, Matthias. Technische Universität Dresden; AlemaniaFil: Horwath, Martin. Technische Universität Dresden; AlemaniaFil: Dietrich, Reinhard. Technische Universität Dresden; AlemaniaCambridge University Press2022-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/188250Richter, Andreas Jorg; Schröder, Ludwig; Scheinert, Mirko; Popov, Sergey V.; Groh, Andreas; et al.; The hydrostatic control of load-induced height changes above subglacial Lake Vostok; Cambridge University Press; Journal Of Glaciology; 68; 271; 4-2022; 849-8660022-1430CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-glaciology/article/hydrostatic-control-of-loadinduced-height-changes-above-subglacial-lake-vostok/D37E371BEC709AA3468D459B52F9C7DDinfo:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2022.2info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T14:20:56Zoai:ri.conicet.gov.ar:11336/188250instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 14:20:57.072CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The hydrostatic control of load-induced height changes above subglacial Lake Vostok
title The hydrostatic control of load-induced height changes above subglacial Lake Vostok
spellingShingle The hydrostatic control of load-induced height changes above subglacial Lake Vostok
Richter, Andreas Jorg
ICE DYNAMICS
LASER ALTIMETRY
SUBGLACIAL LAKES
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
title_short The hydrostatic control of load-induced height changes above subglacial Lake Vostok
title_full The hydrostatic control of load-induced height changes above subglacial Lake Vostok
title_fullStr The hydrostatic control of load-induced height changes above subglacial Lake Vostok
title_full_unstemmed The hydrostatic control of load-induced height changes above subglacial Lake Vostok
title_sort The hydrostatic control of load-induced height changes above subglacial Lake Vostok
dc.creator.none.fl_str_mv Richter, Andreas Jorg
Schröder, Ludwig
Scheinert, Mirko
Popov, Sergey V.
Groh, Andreas
Willen, Matthias
Horwath, Martin
Dietrich, Reinhard
author Richter, Andreas Jorg
author_facet Richter, Andreas Jorg
Schröder, Ludwig
Scheinert, Mirko
Popov, Sergey V.
Groh, Andreas
Willen, Matthias
Horwath, Martin
Dietrich, Reinhard
author_role author
author2 Schröder, Ludwig
Scheinert, Mirko
Popov, Sergey V.
Groh, Andreas
Willen, Matthias
Horwath, Martin
Dietrich, Reinhard
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ICE DYNAMICS
LASER ALTIMETRY
SUBGLACIAL LAKES
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
topic ICE DYNAMICS
LASER ALTIMETRY
SUBGLACIAL LAKES
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
description Lake Vostok, East Antarctica, represents an extensive water surface at the base of the ice sheet. Snow, ice and atmospheric pressure loads applied anywhere within the lake area produce a hydrostatic response, involving deformations of the ice surface, ice-water interface and particle horizons. A modelling scheme is developed to derive height changes of these surfaces for a given load pattern. It is applied to a series of load scenarios, and predictions based on load fields derived from a regional climate model are compared to observational datasets. Our results show that surface height changes due to snow-buildup anomalies are damped over the lake area, reducing the spatial standard deviation by one-third. The response to air pressure variations, in turn, adds surface height variability. Atmospheric pressure loads may produce height changes of up to ±4 cm at daily resolution, but decay rapidly with integration time. The hydrostatic load response has no significant impact neither on ICESat laser campaign biases determined over the lake area nor on vertical particle movements derived from GNSS observations.
publishDate 2022
dc.date.none.fl_str_mv 2022-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/188250
Richter, Andreas Jorg; Schröder, Ludwig; Scheinert, Mirko; Popov, Sergey V.; Groh, Andreas; et al.; The hydrostatic control of load-induced height changes above subglacial Lake Vostok; Cambridge University Press; Journal Of Glaciology; 68; 271; 4-2022; 849-866
0022-1430
CONICET Digital
CONICET
url http://hdl.handle.net/11336/188250
identifier_str_mv Richter, Andreas Jorg; Schröder, Ludwig; Scheinert, Mirko; Popov, Sergey V.; Groh, Andreas; et al.; The hydrostatic control of load-induced height changes above subglacial Lake Vostok; Cambridge University Press; Journal Of Glaciology; 68; 271; 4-2022; 849-866
0022-1430
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-glaciology/article/hydrostatic-control-of-loadinduced-height-changes-above-subglacial-lake-vostok/D37E371BEC709AA3468D459B52F9C7DD
info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2022.2
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Cambridge University Press
publisher.none.fl_str_mv Cambridge University Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 15,811543

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