Assessment of physical weathering in bedrock areas at the Trinity Peninsula, Antarctica: Towards a classification of the current weathering grade in polar areas

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dc.contributor.authorRuiz-Pereira, S.
dc.contributor.authorBeriain, E.
dc.contributor.authorCabre, A.
dc.contributor.authorCid-Aguero, P.
dc.date.accessioned2025-01-20T21:03:19Z
dc.date.available2025-01-20T21:03:19Z
dc.date.issued2022
dc.description.abstractThe Antarctic Peninsula is one of the world's most rapidly warming regions; over the last hundred years, glaciers have retreated, exposing new rocky areas to physical weathering. In its northernmost part, the Trinity Peninsula, physical weathering processes on exposed bedrock between west and east coasts may not be at the same weathering stage as surface temperature conditions are assumed historically different.
dc.description.abstractThus, we examined rock outcrops in ice-free coasts, assessed surface temperature conditions, rock fracturing degree from rock samples, and analyzed the local context for permafrost occurrence. The survey through Trinity Peninsula covered a transect over three ice-free locations between Cape Legoupil and Duse Bay (63 degrees 30'S).
dc.description.abstractOur findings support that ice-free-bedrock surfaces at both coasts of the Trinity Peninsula are at an early weathering stage under equivalent air temperature and wind speed conditions over the last decades. Temperature analysis indicated that if surface temperatures sustain its 2015-2016 magnitude, the permafrost distribution will likely become sporadic. Findings indicate that the physical weathering rates should have been significantly slower or have remained ice-covered much longer than in other areas of the Antarctic Peninsula. Nevertheless, a sustained surface warming will elicit higher physical weathering rates beyond the initial stage attested.
dc.description.funderChilean Antarctic Institute
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.jsames.2022.103913
dc.identifier.eissn1873-0647
dc.identifier.issn0895-9811
dc.identifier.urihttps://doi.org/10.1016/j.jsames.2022.103913
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93138
dc.identifier.wosidWOS:000838705200001
dc.language.isoen
dc.revistaJournal of south american earth sciences
dc.rightsacceso restringido
dc.subjectDuse bay
dc.subjectAntarctic peninsula
dc.subjectFrozen grounds
dc.subjectDeglaciation
dc.subjectThermal weathering
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleAssessment of physical weathering in bedrock areas at the Trinity Peninsula, Antarctica: Towards a classification of the current weathering grade in polar areas
dc.typeartículo
dc.volumen118
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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