Temporal and spatial variability in The Guadalquivir Estuary: a real- time telemetry challenge

Transcription

1 Temporal and spatial variability in The Guadalquivir Estuary: a real- time telemetry challenge F.J. Gutiérrez 1 FRANCISCO.GUTIERREZ@ICMAN.CSIC.ES G. Navarro 1, F.J. Gutiérrez 1, M. Diez-Minguito 2, M.A. Losada 2 y J. Ruiz 1 (1) Grupo de Oceanografía de Ecosistemas, Instituto de Ciencias Marinas de Andalucía (ICMAN), Consejo Superior de Investigaciones Científicas (CSIC) (2) Grupo de Dinámica de Flujos Ambientales, Centro Andaluz de Medio Ambiente (CEAMA) Universidad de Granada - Junta de Andalucía

2 Outline The Subject: The Guadalquivir Estuary Objetives and methodology Hidrodynamics Methods and data validation Results Water Quality Methods and data validation Results Conclusions

3 The Subject of the Study The Guadalquivir Estuary PORTUGAL SPAIN ATLANTIC OCEAN Doñana Natural Park Gulf of Cadiz GULF OF CADIZ Sevilla Sanlúcar de Barrameda MOROCCO

4 Objectives Main objective of the proyect: Development of an Integral Method to Diagnose and Forecast the Consequences of Human Actions on The Guadalquivir Estuary Need of A comprehensive hydrodynamic and hydrological data set Achieved through Design, build and install a network for continuous monitoring (near real-time telemetry + moorings)

5 Near Real-Time Continuous Monitoring Meteorology, Hydrodynamics, Water Quality 42th International Liège Meteorology, Hydrodynamics and Water Quality Real-TimeTelemety Network

6 Meteorology, Hydrodynamics, Water Quality + Tide Gauge Network Meteorology, Hydrodynamics and Water Quality Real-Time Telemety Network Other moored instrumentation: 42th International Liège Tide gauges

7 Meteorology, Hydrodynamics, Water Quality + Tide Gauge Network + ADCP/Directional Waves Meteorology, Hydrodynamics and Water Quality Real-Time Telemety Network Other moored instrumentation: Tide gauges Thermistor Chain +CTD 42th International Liège ADCP x 2

8 REAL-TIME Meteorology, Hydrodynamics, Water Quality 42th International Liège + Tide Gauge Network + ADCP/Directional Waves

9 42th International Liège Instrumentation summary

10 Methodology (I) Temporal Scales Overtides: arising from the non-linear interactions affecting a single astronomical constituent. The frequencies of these higher harmonics are an exact multiple of the frequency of the astronomical constituent on which it is based: M4, M6 Tidal components: related to the semidiurnal components: M2, S2, N2 Daily meteorological scales, with a typical temporal scale of few days, related to river discharges, extra tropical cyclones, local sea-breeze oscillations and offshore winds variability. Compound and low frequency tides: arising from a combination of tidal components and friction phenomena. Seasonal: with typical periods of several months related with the seasonal cycles Annual/Inter-Annual: maximum period solved

11 Methodology (II) Spatial Scales The data set generated allows the full characterization of processes over a wide range of temporal scales (interannual to over-tide) all along the last 60-km stretch of the estuary

12 Outline The Subject: The Guadalquivir Estuary Objetives and methodology Hidrodynamics Methods and data validation Results Water Quality Methods and data validation Results Conclusions

13 Hydrodynamics method (I) Meteorological Station 1 station, 6 samples per hour temperature, pressure, relative humidity, solar radiation, wind velocity (magnitude and direction) Continuous monitoring generates 864 meteorological registers per day accesible in near real-time.

14 Hydrodynamics method method(ii) Water Dynamics Stations 7 stations, 21 depths (6 in near real-time), 4 profiles per hour 3 ENU velocity components, pressure, temperature, pich and roll Continuous monitoring generates water-dynamics registers per day accesible in near real-time Added-Value to Navigation Buoys

15 Hydrodynamics data validation Water Dynamics Velocity Profiles V río (cm/s) V boya 30 (cm/s)

16 Outline The Subject: The Guadalquivir Estuary Objetives and methodology Hidrodynamics Methods and data validation Results Water Quality Methods and data validation Results Conclusions

17 Water Dynamics Results Tide analysis: main harmonics (Pawlowicz m_tide)

18 Water Dynamics Results Tide analysis: main harmonics (Pawlowicz m_tide.m) ALP1 UPS1 > h -1 < 0.05 h -1 EPS2 ETA2 > h -1 < h -1 MM MSF < h -1 MN4 S4 > h -1 < 0.17 h -1 2MN6 2SM6 > 0.20 h -1 < 0.25 h -1

19 Water Dynamics Results Spatial distribution of main tide components M2, S2 y N2 Amplitude Phase Phase

20 Water Dynamics Results April 2008, river discharge The stations can sense changes in the velocity regime of the estuary due to discharge peaks

21 Outline The Subject: The Guadalquivir Estuary Objetives and methodology Hidrodynamics Methods and data validation Results Water Quality Methods and data validation Results Conclusions

22 Water Quality method Water Quality Stations 8 estations, 4 depths, 2 discrete profiles per hour conductivity, temperature, dissolved oxygen, turbidity and fluorescence Continuous monitoring generates water-quality registers per day accesible in near realtime. Navigation Buoys Added-Value

23 Water Quality data validation Temperature

24 Water Quality data validation Salinity High frequency sampling avoids aliasing issues

25 Water Quality data validation Dissolved Oxigen

26 Water Quality data validation Turbidity

27 Outline The Subject: The Guadalquivir Estuary Objetives and methodology Hidrodynamics Methods and data validation Results Water Quality Methods and data validation Results Conclusions

28 Water Quality Results (I) Salinity distribution along The Guadalquivir Estuary Low-discharge regime, Q<50 m 3 /s 31/08/2008 Q = 20 m 3 /s High tide Average (M2 period) Low tide Salinity distribution is highly influenced by discharge So is the distibution of planktonic, bentonic and ictyoplanktonic organisms along the estuary Standard regime, Q = 424 m 3 /s

29 Water Quality Results (II) Salinity drop Conventional regime after summer Winter heavy rains 23-dic-2009 discharge peak

30 Water Quality Results (III) Spring-08 Summer-08 Autum-08 Winter-08/09 Spring-09 Summer-09 Autum-09 Winter-09/10 Dump discharge Salinity Dissolved oxygen Dry-wet seasonal cycle Spring Neap Spring Neap Spring Neap Spring Neap Tide amplitude Meteorological and fortnight analysis Salinity Turbidity Dissolved oxygen Tidal amplitude Tidal analysis Turbidity Salinity Dissolved oxygen Turbidity

31 Water Quality Results (IV) A B C D E F G May 2007 Discharge Turbidity G A TSS > 30x10 3 mg/l for several months F B C D E

32 Outline The Subject: The Guadalquivir Estuary Objetives and methodology Hidrodynamics Methods and data validation Results Water Quality Methods and data validation Results Conclusions

33 Conclusions The near real-time telemetry network deployed at the Guadalquivir estuary has measured meteorological, hydrodynamical and water quality parameters since February All the stations are operationally robust, and they have solved all the scales of interest in the estuary, with minimum maintenance, for two years.

34 Temporal and spatial variability of hydrological variables in THANK Guadalquivir YOU River Estuary through a real time telemetry network VERY MUCH F.J. Gutiérrez 1 FOR YOUR ATTENTION FRANCISCO.GUTIERREZ@ICMAN.CSIC.ES G. Navarro Questions? 1, F.J. Gutiérrez 1, M. Diez-Minguito 2, M.A. Losada 2 y J. Ruiz 1 (1) Grupo de Oceanografía de Ecosistemas, Instituto de Ciencias Marinas de Andalucía (ICMAN), Consejo Superior de Investigaciones Científicas (CSIC) (2) Grupo de Dinámica de Flujos Ambientales, Centro Andaluz de Medio Ambiente (CEAMA) Universidad de Granada - Junta de Andalucía

35 Desing and Construction

36 Instalation

37 more instalation

38 42th International Liège and more instalation

39 Maintenance

40 more maintenance