Temporal and spatial variability in the Guadalquivir estuary: a challenge for real-time telemetry |
| |
| Authors: | Gabriel Navarro Francisco Javier Gutiérrez Manuel Díez-Minguito Miguel Angel Losada Javier Ruiz |
| |
| Institution: | 1.Department of Ecology and Coastal Management,Instituto de Ciencias Marinas de Andalucía ICMAN-CSIC,Puerto Real,Spain;2.Grupo de Dinámica de Flujos Ambientales,Universidad de Granada,Granada,Spain |
| |
| 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: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
