Автор(ы): De Filippi F.M., Iacurto S., Grelle G., Sappa G.
Редактор(ы):
Год: 2021
Название: Magnesium as Environmental Tracer for Karst Spring Baseflow/Overflow Assessment - A Case Study of the Pertuso Karst Spring (Latium Region, Italy)
Источник: Water
Место публикации: .
Том: 13
Выпуск: 93
Страницы: 1-15
Web/Url: https://doi.org/10.3390/w13010093
№ полки:
Добавлено: Naumenko
Ключевые слова: karst spring, aquifer, magnesium, environmental tracer, discharge, baseflow, overflow, mass balance model
Источник: https://doi.org/10.3390/w13010093
Реферат: Following a previous research carried out on the same site, this paper presents the updateof the Mg2+ based method for the estimation of Pertuso Spring discharge, located in Central Italy.New collected data confirmed the validity of the proposed model and the conservative behaviour ofMg2+ for groundwater related to the Pertuso Spring aquifer. Further analysis allowed to obtain alocal linear relationship between magnesium concentration and total spring discharge (includingexploitation rate), regardless of the mixing model proposed with the Aniene River. As regards twosamples which fall out of the linear relationship and could have been detected as “outliers”, morein-depth data processing and sensitivity analyses revealed that the lowering in magnesium, at equaldischarges, is determined by the appearance of the quick-flow component, less mineralized andrelated to storm events. Results showed that under specific conditions, related to the absence orpresence of previous intense rainfall events, Mg2+ could be effectively a useful tracer for separating spring conduit flow (overflow) from diffuse flow (baseflow) within the karst aquifer.