{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T18:44:55Z","timestamp":1774464295032,"version":"3.50.1"},"reference-count":80,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2022,7,28]],"date-time":"2022-07-28T00:00:00Z","timestamp":1658966400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"HYDROARID","award":["POCI\/CTE\/GEX\/55399\/2004"],"award-info":[{"award-number":["POCI\/CTE\/GEX\/55399\/2004"]}]},{"name":"HYDROARID","award":["FCT-UIDB\/04349\/2020"],"award-info":[{"award-number":["FCT-UIDB\/04349\/2020"]}]},{"name":"HYDROARID","award":["FCT-UIDB\/04028\/2020"],"award-info":[{"award-number":["FCT-UIDB\/04028\/2020"]}]},{"name":"HYDROARID","award":["FCT-UIDB\/50019\/2021"],"award-info":[{"award-number":["FCT-UIDB\/50019\/2021"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia (FCT) and FEDER","award":["POCI\/CTE\/GEX\/55399\/2004"],"award-info":[{"award-number":["POCI\/CTE\/GEX\/55399\/2004"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia (FCT) and FEDER","award":["FCT-UIDB\/04349\/2020"],"award-info":[{"award-number":["FCT-UIDB\/04349\/2020"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia (FCT) and FEDER","award":["FCT-UIDB\/04028\/2020"],"award-info":[{"award-number":["FCT-UIDB\/04028\/2020"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia (FCT) and FEDER","award":["FCT-UIDB\/50019\/2021"],"award-info":[{"award-number":["FCT-UIDB\/50019\/2021"]}]},{"name":"CERENA\/|IST","award":["POCI\/CTE\/GEX\/55399\/2004"],"award-info":[{"award-number":["POCI\/CTE\/GEX\/55399\/2004"]}]},{"name":"CERENA\/|IST","award":["FCT-UIDB\/04349\/2020"],"award-info":[{"award-number":["FCT-UIDB\/04349\/2020"]}]},{"name":"CERENA\/|IST","award":["FCT-UIDB\/04028\/2020"],"award-info":[{"award-number":["FCT-UIDB\/04028\/2020"]}]},{"name":"CERENA\/|IST","award":["FCT-UIDB\/50019\/2021"],"award-info":[{"award-number":["FCT-UIDB\/50019\/2021"]}]},{"name":"IDL","award":["POCI\/CTE\/GEX\/55399\/2004"],"award-info":[{"award-number":["POCI\/CTE\/GEX\/55399\/2004"]}]},{"name":"IDL","award":["FCT-UIDB\/04349\/2020"],"award-info":[{"award-number":["FCT-UIDB\/04349\/2020"]}]},{"name":"IDL","award":["FCT-UIDB\/04028\/2020"],"award-info":[{"award-number":["FCT-UIDB\/04028\/2020"]}]},{"name":"IDL","award":["FCT-UIDB\/50019\/2021"],"award-info":[{"award-number":["FCT-UIDB\/50019\/2021"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Water"],"abstract":"<jats:p>The over-exploitation of coastal aquifers has led to seawater intrusion issues in many parts of the globe; this problem, which is associated with water recharge deficit and anthropogenic pollution, represents the main source of groundwater degradation in Santiago Island in the Republic of Cape Verde\u2019s archipelago. Brackish groundwater for agriculture and human consumption is being provided to several areas on Santiago Island as the only type of available water. Chemical and isotopic data obtained in three main groundwater systems were used in the characterization of the groundwater resources and in the identification of the main source responsible for their degradation. The obtained results indicate water\u2013rock interaction as the major process responsible for the groundwater quality reflecting its lithological composition. Carbonatite dissolution can be partially responsible for the calcium increase along the groundwater flow path. Isotopic data (\u03b42H, \u03b418O; 3H and 14C) combined with the water chemistry provided a wide characterization of the groundwater recharge and identification of salinization processes (like seawater intrusion and marine aerosols dissolution in different sectors of the island). In the eastern part of Santiago Island, a different isotopic pattern (2H-18O) was observed in the groundwater samples, which was likely ascribed to different climate conditions. Carbon-14 determinations indicate apparent groundwater ages between 3.5 and 5.1 ka BP.<\/jats:p>","DOI":"10.3390\/w14152339","type":"journal-article","created":{"date-parts":[[2022,7,29]],"date-time":"2022-07-29T01:41:16Z","timestamp":1659058876000},"page":"2339","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Radiocarbon Dating and Stable Isotopes Content in the Assessment of Groundwater Recharge at Santiago Island, Republic of Cape Verde"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2178-7848","authenticated-orcid":false,"given":"Paula M.","family":"Carreira","sequence":"first","affiliation":[{"name":"Centro de Ci\u00eancias e Tecnologias Nucleares (C2TN), Departamento de Engenharia e Ci\u00eancias Nucleares (DECN), Instituto Superior T\u00e9cnico, Universidade de Lisboa, Estrada Nacional 10, ao km 139,7, 2695-066 Bobadela LRS, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8766-7910","authenticated-orcid":false,"given":"Ant\u00f3nio","family":"Lobo de Pina","sequence":"additional","affiliation":[{"name":"Faculdade de Ci\u00eancias e Tecnologia, Universidade de Cabo Verde, Zona K do Palmarejo Grande, Praia, Santiago, Cape Verde"}]},{"given":"Alberto","family":"da Mota Gomes","sequence":"additional","affiliation":[{"name":"Faculdade de Ci\u00eancias e Tecnologia, Universidade de Cabo Verde, Zona K do Palmarejo Grande, Praia, Santiago, Cape Verde"}]},{"given":"Jos\u00e9 M.","family":"Marques","sequence":"additional","affiliation":[{"name":"Centro de Recursos Naturais e Ambiente (CERENA), Departamento de Engenharia Civil, Arquitetura e Georrecursos (DECivil), Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal"}]},{"given":"Fernando","family":"Monteiro Santos","sequence":"additional","affiliation":[{"name":"Instituto D. Luiz (IDL), Faculdade de Lisboa, Universidade de Lisboa, Campo Grande 016, 1749-016 Lisbon, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,7,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1233","DOI":"10.1016\/j.apgeochem.2003.12.006","article-title":"Hydrogeochemical and isotopic constraints on the origins of dryland salinity, Murray Basin, Victoria, Australia","volume":"19","author":"Cartwright","year":"2004","journal-title":"Appl. Geochem."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"163","DOI":"10.1016\/j.apgeochem.2013.12.012","article-title":"Source of groundwater salinity in coastline aquifers based on environmental isotopes (Portugal): Natural vs. human interference. 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