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Transport processes: Time scale correlation between flow and scalar concentration

Transport processes: Time scale correlation between flow and scalar concentration. Chris Enright CWEMF DSM2 Workshop February 6, 2007. Or, how Geometry “filters” estuarine drivers (tides, river input). Chris Enright CWEMF DSM2 Workshop February 6, 2007. Transport processes.

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Transport processes: Time scale correlation between flow and scalar concentration

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  1. Transport processes:Time scale correlation between flow and scalar concentration Chris Enright CWEMF DSM2 Workshop February 6, 2007

  2. Or, how Geometry “filters” estuarine drivers (tides, river input) Chris Enright CWEMF DSM2 Workshop February 6, 2007

  3. Transport processes • For modeling purposes, validate that DSM2 transports salt etc. for the right reason… • Reasons: Advection and dispersion

  4. Advective Transport • Correlation between net flow and net scalar concentration • Mostly from river input and spring-neap estuary fill-drain cycle • Advective Flux = <Qt><Ct>

  5. Dispersive Transport • Correlation between tidal flow and tidal scalar concentration • Driven by tide • Dispersive Flux = <Q’t*C’t>

  6. Total Flux • Superposition of advective and dispersive flux. • Total Flux = advection + disperion <Qt*Ct> = <Qt><Ct> + <Q’t*C’t> • Compute with model output and field data and compare.

  7. Sheldrake Slough First Mallard Branch Suisun Marsh and Bay

  8. Comparing Sheldrake Sl. and First Mallard Branch Sheldrake Slough First Mallard Branch Suisun Slough • Similar tidal prism • Similar source water • Different adjacent land use

  9. First Mallard Branch Suisun Slough

  10. First Mallard Branch Suisun Slough

  11. First Mallard Branch No Levees Suisun Slough

  12. First Mallard Branch No Levees Suisun Slough Marsh plain elevation is ~ MHHW

  13. First Mallard Branch No Levees Edge of Marsh Plain is ~ 6.7 feet NAVD88 Suisun Slough Marsh plain elevation is ~ MHHW

  14. First Mallard Branch No Levees Edge of Marsh Plain is ~ 6.7 feet NAVD88 Suisun Slough Marsh plain elevation is ~ MHHW Sonde ADCP

  15. Sheldrake Slough Suisun Slough

  16. Sheldrake Slough Suisun Slough Completely diked

  17. Sheldrake Slough Diversion/Drain Culverts Suisun Slough Completely diked

  18. Sheldrake Slough Diversion/Drain Culverts Suisun Slough Moderately subsided marsh plain depending on land use practice Completely diked

  19. Sheldrake Slough Diversion/Drain Culverts Suisun Slough Moderately subsided marsh plain depending on land use practice ADCP Sonde Completely diked

  20. Comparing Typical Cross-section Hypsography MHHW Levee Borrow Ditch MSL Managed Pond ~ Sheldrake Slough MLLW Mean Sea Level

  21. Comparing Typical Cross-section Hypsography MHHW Levee Borrow Ditch MSL Managed Pond ~ Sheldrake Slough MLLW Mean Sea Level Marsh plain MHHW MSL ~ First Mallard Branch MLLW

  22. Comparing Typical Cross-section Hypsography MHHW Levee Borrow Ditch MSL Managed Pond ~ Sheldrake Slough MLLW Spring High Tide Marsh plain MHHW MSL ~ First Mallard Branch MLLW

  23. Data is flow, temperature, chlorophyll, salt and DO flux at these locations: First Mallard Branch Sheldrake Slough Suisun Slough

  24. Comparing Hydrodynamics

  25. Tidal Flow EBB (out) Tidal Flow 0 FLOOD (in) FLOW (cfs) EBB (out) 0 FLOOD (in) April 2004 | May | June | July | August

  26. Tidal and Net Flow EBB (out) Tidal Flow Residual “Net” Flow 0 FLOOD (in) FLOW (cfs) EBB (out) 0 FLOOD (in) April 2004 | May | June | July | August

  27. Salt Flux Total = Advective + Dispersive FluxFluxFlux (Spring-Neap)(Tides) <Qt*Ct> = <Qt><Ct> + <Q’t*C’t> EBB (out) Flux (kg/s) FLOOD (in) EBB (out) FLOOD (in) April 2004 | May | June | July | August

  28. DO Flux Total = Advective + Dispersive FluxFluxFlux (Spring-Neap)(Tides) <Qt*Ct> = <Qt><Ct> + <Q’t*C’t> EBB (out) Flux (g/s) FLOOD (in) EBB (out) FLOOD (in) April 2004 | May | June | July | August

  29. Temperature Flux 3 Temperature Flux (C*m /s) Total = Advective + Dispersive FluxFluxFlux (Spring Neap)(Tides) <Qt*Ct> = <Qt><Ct> + <Q’t*C’t> EBB (out) FLOOD (in) EBB (out) FLOOD (in) April 2004 | May | June | July | August

  30. Chlorophyll Flux Total = Advective + Dispersive FluxFluxFlux (Spring-Neap)(Tides) <Qt*Ct> = <Qt><Ct> + <Q’t*C’t> EBB (out) Flux (g/s) FLOOD (in) Spring Tide AdvectiveFlux EBB (out) FLOOD (in) April 2004 | May | June | July | August

  31. Chlorophyll Flux Total = Advective + Dispersive FluxFluxFlux (Spring-Neap)(Tides) <Qt*Ct> = <Qt><Ct> + <Q’t*C’t> EBB (out) Flux (g/s) FLOOD (in) Neap Tide AdvectiveFlux EBB (out) FLOOD (in) April 2004 | May | June | July | August

  32. Chlorophyll Flux Total = Advective + Dispersive FluxFluxFlux (Spring-Neap)(Tides) <Qt*Ct> = <Qt><Ct> + <Q’t*C’t> EBB (out) Flux (g/s) FLOOD (in) Spring Tide Dispersive Flux EBB (out) FLOOD (in) April 2004 | May | June | July | August

  33. Chlorophyll Flux Total = Advective + Dispersive FluxFluxFlux (Spring-Neap)(Tides) <Qt*Ct> = <Qt><Ct> + <Q’t*C’t> EBB (out) Flux (g/s) FLOOD (in) Neap Tide Dispersive Flux EBB (out) FLOOD (in) April 2004 | May | June | July | August

  34. Conceptual Model Drivers (forcing mechanisms) Linkages (hydrodynamic processes) Outcomes (Chemical/Biological Habitat Characteristics)

  35. Conceptual Model Drivers (forcing mechanisms) Linkages (hydrodynamic processes) Outcomes (Chemical/Biological Habitat Characteristics) • Meteorology • Tides • River inputs • Exports/ • Diversions/ • Drainages

  36. Conceptual Model Drivers (forcing mechanisms) Linkages (hydrodynamic processes) Outcomes (Chemical/Biological Habitat Characteristics) • Meteorology • Tides • River inputs • Exports/ • Diversions/ • Drainages • Advection • Dispersion • - network • - velocity shear • - tidal trapping • Gravitational • Circulation

  37. Conceptual Model Drivers (forcing mechanisms) Linkages (hydrodynamic processes) Outcomes (Chemical/Biological Habitat Characteristics) • Meteorology • Tides • River inputs • Exports/ • Diversions/ • Drainages • Advection • Dispersion • - network • - velocity shear • - tidal trapping • Gravitational • Circulation • Gradients of • Residence time • Salinity • Temperature • Sediment • Biota • Toxics • etc.

  38. Conceptual Model Geometry (Like aFilter) Drivers (forcing mechanisms) Linkages (hydrodynamic processes) Outcomes (Chemical/Biological Habitat Characteristics) • Meteorology • Tides • River inputs • Exports/ • Diversions/ • Drainages • Advection • Dispersion • - network • - velocity shear • - tidal trapping • Gravitational • Circulation • Gradients of • Residence time • Salinity • Temperature • Sediment • Biota • Toxics • etc.

  39. Conceptual Model Geometry (Like aFilter) Drivers (forcing mechanisms) Linkages (hydrodynamic processes) Outcomes (Chemical/Biological Habitat Characteristics) • Meteorology • Tides • River inputs • Exports/ • Diversions/ • Drainages • Advection • Dispersion • - network • - velocity shear • - tidal trapping • Gravitational • Circulation • Gradients of • Residence time • Salinity • Temperature • Sediment • Biota • Toxics • etc.

  40. Conceptual Model Geometry (Like aFilter) Drivers (forcing mechanisms) Linkages (hydrodynamic processes) Outcomes (Chemical/Biological Habitat Characteristics) • Meteorology • Tides • River inputs • Exports/ • Diversions/ • Drainages • Advection • Dispersion • - network • - velocity shear • - tidal trapping • Gravitational • Circulation • Gradients of • Residence time • Salinity • Temperature • Sediment • Biota • Toxics • etc. First Mallard Branch

  41. Conceptual Model Geometry (Like aFilter) Drivers (forcing mechanisms) Linkages (hydrodynamic processes) Outcomes (Chemical/Biological Habitat Characteristics) • Meteorology • Tides • River inputs • Exports/ • Diversions/ • Drainages • Advection • Dispersion • - network • - velocity shear • - tidal trapping • Gravitational • Circulation • Gradients of • Residence time • Salinity • Temperature • Sediment • Biota • Toxics • etc. First Mallard Branch

  42. Conceptual Model Geometry (Like aFilter) Drivers (forcing mechanisms) Linkages (hydrodynamic processes) Outcomes (Chemical/Biological Habitat Characteristics) • Meteorology • Tides • River inputs • Exports/ • Diversions/ • Drainages • Advection • Dispersion • - network • - velocity shear • - tidal trapping • Gravitational • Circulation • Gradients of • Residence time • Salinity • Temperature • Sediment • Biota • Toxics • etc. Sheldrake Slough

  43. Thank you

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