Ocean Dynamics

, Volume 61, Issue 6, pp 753–765

Temporal and spatial variability in the Guadalquivir estuary: a challenge for real-time telemetry

  • Gabriel Navarro
  • Francisco Javier Gutiérrez
  • Manuel Díez-Minguito
  • Miguel Angel Losada
  • Javier Ruiz
Article
Part of the following topical collections:
  1. Multiparametric observation and analysis of the Sea

Abstract

Meteorological, hydrological, and hydrodynamic data for 3 years (2008–2010) have been used to document and explain the temporal and spatial variability of the physical–biogeochemical interactions in the Guadalquivir River Estuary. A real-time, remote monitoring network has been deployed along the course of the river between its mouth and Seville to study a broad range of temporal scales (semidiurnal, diurnal, fortnightly, and seasonal). This network consists of eight hydrological monitoring stations capable of measuring temperature, conductivity, dissolved oxygen, turbidity, and chlorophyll fluorescence at four depths. In addition, six stations have been deployed to study hydrodynamics, obtaining 20-cell water column current profiles, and there is a meteorological station at the river mouth providing data for understanding atmospheric interactions. Completing this data-gathering network, there are several moorings (tide gauges, current/wave sensors, and a thermistor chain) deployed in the estuary and river mouth. Various sources of physical forcing, such as wind, tide-associated currents, and river discharge, are responsible for the particular temporal and spatial patterns of turbidity and salinity found in the estuary. These variables force the distribution of biogeochemical variables, such as dissolved oxygen and chlorophyll fluorescence. In particular, episodes of elevated turbidity (when suspended particle matter concentration >3,000 mg/l) have been detected by the network, together with episodes of declining values of salinity and dissolved oxygen. All these patterns are related to river discharge and tidal dynamics (spring/neap and high/low tide).

Keywords

Guadalquivir estuary Real-time remote monitoring Sensor technology Telemetry Water quality 

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Gabriel Navarro
    • 1
    • 2
  • Francisco Javier Gutiérrez
    • 1
    • 2
  • Manuel Díez-Minguito
    • 1
    • 2
  • Miguel Angel Losada
    • 1
    • 2
  • Javier Ruiz
    • 1
    • 2
  1. 1.Department of Ecology and Coastal ManagementInstituto de Ciencias Marinas de Andalucía ICMAN-CSICPuerto RealSpain
  2. 2.Grupo de Dinámica de Flujos AmbientalesUniversidad de GranadaGranadaSpain

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