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Late Pleistocene and Holocene groundwater flow history in the Baltic Artesian Basin : a synthesis of numerical models and hydrogeochemical data

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ali.license-refhttps://creativecommons.org/licenses/by/4.0fr
ali.license-ref.start-date2021-06-20fr
bul.description.provenanceembre spbarfr
bul.rights.addendum© 2021 Authors. This is an Open Access article distributed under the terms and conditions of the Creative Commons Attribution 4.0 International Licence (http://creativecommons.org/licenses/by/4.0).fr
bul.rights.dateAccepPubl2021-06-20fr
bul.rights.periodeEmbargoP0Mfr
bul.rights.typeDatedatePublicationfr
dc.contributor.authorVaikmäe, Rein
dc.contributor.authorPärn, Joonas
dc.contributor.authorSterckx, Arnaud
dc.contributor.authorRaidla, Valle
dc.contributor.authorLemieux, Jean-Michel
dc.contributor.authorIvask, Jüri
dc.contributor.authorKaup, Enn
dc.contributor.authorAeschbach, Werner
dc.contributor.authorGerber, Christoph
dc.contributor.authorPurtscher, Roland
dc.contributor.authorMartma, Tõnu
dc.contributor.authorVallner, Leo
dc.coverage.spatialBouclier baltiquefr
dc.coverage.temporalPléistocènefr
dc.coverage.temporalHolocènefr
dc.date.accessioned2021-06-23T16:24:25Z
dc.date.available2021-06-23T16:24:25Z
dc.date.issued2021-06-20
dc.description.abstractWe review our current understanding of groundwater flow history in the northern part of the Baltic Artesian Basin (BAB) from the end of the Late Pleistocene to current conditions based on the hydrogeological studies carried out in 2012–2020 by the Department of Geology, Tallinn University of Technology and its partners. Hydrogeochemical data and various numerical models are combined in order to understand the link between glaciations and groundwater flow. The results of our earlier research and published literature on groundwater flow history in the BAB are also taken into account. The reconstruction of groundwater flow history is based on the database of the isotopic, chemical and dissolved gas composition of groundwater. The database contains data on 1155 groundwater samples collected during 1974–2017. We find that groundwater in the BAB is controlled by the mixing of three distinct water masses: interglacial/modern meteoric water (δ18O ≈ –11‰), glacial meltwater (δ18O ≤ –18‰) and an older syngenetic end­member (δ18O ≥–4.5‰). The numerical modelling has suggested that the preservation of meltwater in the northern part of the BAB is controlled by confining layers and the proximity to the outcrop areas of aquifers. Aquifers containing groundwater of glacial origin are in a transient state with respect to modern topographically­driven groundwater flow conditions. The most important topics for future research that can address gaps in our current knowledge are also reviewed.fr
dc.identifier.doi10.3176/earth.2021.11fr
dc.identifier.issn1736-7557fr
dc.identifier.urihttp://hdl.handle.net/20.500.11794/69453
dc.languageengfr
dc.publisherTallinn Estonian Academy Publishersfr
dc.rightshttp://purl.org/coar/access_right/c_abf2
dc.subjectBaltic Artesian Basinfr
dc.subjectGroundwater flowfr
dc.subjectEnvironmental tracersfr
dc.subjectNnumerical modellingfr
dc.subjectPalaeohydrologyfr
dc.subject.rvmPaléohydrologiefr
dc.subject.rvmStratigraphiefr
dc.subject.rvmEau souterraine -- Écoulementfr
dc.subject.rvmEau -- Chimiefr
dc.titleLate Pleistocene and Holocene groundwater flow history in the Baltic Artesian Basin : a synthesis of numerical models and hydrogeochemical datafr
dc.typearticle de recherche
dc.type.legacyCOAR1_1::Texte::Périodique::Revue::Contribution à un journal::Article::Article de recherchefr
dcterms.bibliographicCitationEstonian Journal of Earth Sciences, Vol. 70 (3), 152-164 (2021)fr
dspace.accessstatus.time2023-03-26 18:02:34
dspace.entity.typePublication
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relation.isAuthorOfPublication791dc259-ee6e-409c-9958-32d86899a061
relation.isAuthorOfPublication7cfa0245-0043-4670-bddf-79487062c075
relation.isAuthorOfPublication.latestForDiscovery2acc7b97-4677-4c63-9e83-aac7642ed0a6
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rioxxterms.project.funder-nameEstonian Ministry of Education and Researchfr
rioxxterms.versionVoRfr
rioxxterms.version-of-recordhttps://doi.org/10.3176/earth.2021.11fr
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