English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Coal mining in southern Santa Catarina has been developed over a century and the absence of environmental management in mining projects caused significant quality changes in the surface and underground waters of the Araranguá Basin. In addition to the change in water quality, collapses have occurred in underground mines which caused the fracturing of overlying layers and allowed the expansion of aquifer systems and its integration with surface waters circulation processes. In order to better understand the impacts on water quality and groundwater flow conditions, samples of 9 wells from Rio Bonito Aquifer System, 4 wells from Alluvial Fan Aquifer System and 6 from surface waters of the same catchments were analyzed. Hydrochemical analysis indicates a predominance of calcium and sodium bicarbonate waters which when in contact with acid mine drainage are transformed into sulfated waters. The isotopic values δ2H and δ18O shows similarity to isotopic composition of meteoric waters, contributing to the hypothesis of the strong interaction between groundwater, waters from water table and surface waters, which occurs due to the ruptured tectonics affecting gondwana lithologies and it is intensified by the presence of underground mines.

INTERCONECTIVIDADE DE AQUÍFEROS E OS EFEITOS DA DRENAGEM ÁCIDA DE MINA NA QUALIDADE DAS ÁGUAS DA BACIA CARBONÍFERA DE SANTA CATARINA (SC)