2024-03-28T20:03:15Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1092992022-12-21T08:48:59Zcom_10261_14com_10261_8com_10261_132col_10261_267col_10261_385
Contribution of groundwater discharge to the coastal dissolved nutrients and trace metal concentrations in Majorca Island: Karstic vs detrital systems
Tovar-Sánchez, Antonio
Basterretxea, Gotzon
Rodellas, Valentí
Sánchez-Quiles, David
García-Orellana, Jordi
Masqué, Pere
Jordi, Antoni
López, José María
García-Solsona, Ester
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas (España)
Ministerio de Ciencia e Innovación (España)
European Commission
nutrient cycling
nitrogen compound
nearshore environment
hydrogeology
Groundwater
dissolved load
discharge
Concentration (composition)
oxide
phosphate
trace metal
shoreline
© 2014 American Chemical Society. Submarine groundwater discharge (SGD) and derived nutrient (NO2 -, NO3 -, NH4 +, PO4 3-, and SiO2) and trace element (Cd, Co, Cu, Fe, Mo, Ni, Pb, V and Zn) loadings to the coastal sea were systematically assessed along the coast of Majorca Island, Spain, in a general survey around the island and in three representative coves during 2010. We estimated that brackish water discharges through the shoreline are important contributors to the DIN, SiO2, Fe, and Zn budgets of the nearshore waters. Furthermore, our results showed that SGD-derived elements are conditioned by the hydrogeological formations of the aquifer and discharge type. Thus, while rapid discharges through karstic conduits are enriched in SiO2 and Zn, the large detrital aquifers of the island typically present enhanced concentrations of Fe. The estimated total annual inputs of chemicals constituents discharged by SGD to the coastal waters were as follows: DIN: 610 × 103 kg yr-1, SiO2: 1400 × 103 kg yr-1, Fe: 3.2 × 103 kg yr-1, and Zn: 2.0 × 103 kg yr-1. Our results provide evidence that SGD is a major contributor to the dissolved pool of inorganic nutrients and trace metals in the nearshore waters of Majorca.
2015-01-13T10:42:49Z
2015-01-13T10:42:49Z
2014-09-12
2015-01-13T10:42:52Z
artículo
Environmental Science and Technology 48(20): 11819-11827 (2014)
http://hdl.handle.net/10261/109299
10.1021/es502958t
http://dx.doi.org/10.13039/501100004837
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100003339
eng
Postprint
http://dx.doi.org/10.1021/es502958t
openAccess
American Chemical Society