Use of 222 radon as a simple tool for surface water–groundwater connectivity assessment: a case study in the arid L imarí basin, north‐central C hile
2013; Wiley; Volume: 28; Issue: 3 Linguagem: Inglês
10.1111/wej.12057
ISSN1747-6593
AutoresRicardo Oyarzún, Elizabeth Jofré, Hugo Maturana, Jorge Oyarzún, Evelyn Aguirre,
Tópico(s)Landslides and related hazards
ResumoAbstract We report the results from a pilot study on the use of 222 Rn ( 222 radon) for river–aquifer interaction assessment in the L imarí watershed, north‐central C hile. Previous studies on this tool for such applications are not abundant at international level, and no records exist for C hile. The lowest 222 Rn levels (less than 1000 Bq/m 3 ) were found in water reservoirs, thus indicating that this isotope is easily lost (and therefore usually absent) in surface waters. Conversely, the highest levels of 222 Rn were found in groundwater, with maxima activities around 20 000 Bq/m 3 . This remarkable contrast allowed clear identification of zones of surface water–groundwater connectivity in the searched watershed domain.
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