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A body of liquid water located at a depth of 1.5 km has been inferred from radar data in the South Polar Cap. However, the high temperatures that would facilitate the existence of liquid water or brine at that depth are not consistent with estimations of heat flow that are based on the lithosphere\u2019s flexure. Attempts to reconcile both issues have been inconclusive or otherwise unsuccessful. Here, we analyze the possible role(s) of subsurface ammonia and\/or methanol in maintaining water in a liquid state at subsurface temperatures that are compatible with the lithosphere strength. Our results indicate that the presence of these compounds at the base of the SPLD can reconcile the existence of liquid water with previous estimations of surface heat flow.<\/jats:p>","DOI":"10.1089\/ast.2024.0075","type":"journal-article","created":{"date-parts":[[2025,2,17]],"date-time":"2025-02-17T12:22:06Z","timestamp":1739794926000},"page":"201-208","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["Ammonia or Methanol Would Enable Subsurface Liquid Water at the Martian South Pole"],"prefix":"10.1177","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1879-6847","authenticated-orcid":false,"given":"Isabel","family":"Egea-Gonz\u00e1lez","sequence":"first","affiliation":[{"name":"Departamento de F\u00edsica Aplicada, Escuela Superior de Ingenier\u00eda, Universidad de C\u00e1diz, C\u00e1diz, Spain."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6243-1362","authenticated-orcid":false,"given":"Christopher P.","family":"McKay","sequence":"additional","affiliation":[{"name":"Space Science Division, NASA Ames Research Center, Moffett Field, California, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John E.","family":"Hallsworth","sequence":"additional","affiliation":[{"name":"Institute for Global Food Security, School of Biological Sciences, Medical Biology Centre, Queen\u2019s University Belfast, Belfast, UK."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9739-8788","authenticated-orcid":false,"given":"Alberto","family":"Jim\u00e9nez-D\u00edaz","sequence":"additional","affiliation":[{"name":"Departamento de Biolog\u00eda y Geolog\u00eda, F\u00edsica y Qu\u00edmica Inorg\u00e1nica, ESCET, Universidad Rey Juan Carlos, Madrid, Spain."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Javier","family":"Ruiz","sequence":"additional","affiliation":[{"name":"Departamento de Geodin\u00e1mica, Estratigraf\u00eda y Paleontolog\u00eda; Facultad de Ciencias Geol\u00f3gicas, Universidad Complutense de Madrid, Madrid, Spain."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2025,3,18]]},"reference":[{"issue":"6","key":"e_1_3_6_2_1","first-page":"1191","article-title":"Super-long anabiosis of ancient microorganisms in ice and terrestrial models for development of methods to search for life on Mars, Europa and other planetary bodies","volume":"38","author":"Abyzov SS","year":"2006","unstructured":"Abyzov SS, , Duxbury NS, , Bobin NE, et al. 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