Articles | Volume 12, issue 8
Nat. Hazards Earth Syst. Sci., 12, 2581–2589, 2012
https://doi.org/10.5194/nhess-12-2581-2012

Special issue: 2nd International Conference on Ecohydrology and Climate...

Nat. Hazards Earth Syst. Sci., 12, 2581–2589, 2012
https://doi.org/10.5194/nhess-12-2581-2012

Research article 14 Aug 2012

Research article | 14 Aug 2012

Measurement frequency and sampling spatial domains required to characterize turbidity and salinity events in the Guadalquivir estuary (Spain)

E. Contreras and M. J. Polo E. Contreras and M. J. Polo
  • Fluvial Dynamics and Hydrology Research Group, Instituto Interuniversitario de Investigación del Sistema Tierra en Andalucía (IIISTA), University of Córdoba. Rabanales Campus, Leonardo da Vinci Building, 14071, Córdoba, Spain

Abstract. Estuaries are complex systems in which long water quality data series are not always available at the proper scale. Data proceeding from several water quality networks, with different measuring frequencies (monthly, weekly and 15 min) and different numbers of sampling points, were compared throughout the main channel of the Guadalquivir estuary. Higher frequency of turbidity sampling in the upper estuary is required. In the lower estuary, sampling points help to find out the ETM, and higher frequency sampling of EC is required because of the effect of the tidal and river components. This could be a feedback for the implementation of monitoring networks in estuaries.

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