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Mathematical modeling and Hyperspectral imaging. Eli Ateljevich DWR Delta Modeling Section April 3, 2013. Yolo Bypass. Sacramento River. Sacramento. Tributaries. Delta Island Consumptive Use. Martinez. Tidal Surface Elevation & Water Quality. Stockton. Exports. San Joaquin River.

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mathematical modeling and hyperspectral imaging

Mathematical modeling and Hyperspectral imaging

Eli Ateljevich

DWR Delta Modeling Section

April 3, 2013

slide2

Yolo Bypass

Sacramento River

Sacramento

Tributaries

Delta Island Consumptive Use

Martinez

Tidal Surface Elevation & Water Quality

Stockton

Exports

San Joaquin River

Image from USBR GIS Group

DSM2: Our 1D Model

Inflow & water quality

Export flow

variables of interest
Variables of Interest
  • Temperature (<50m)
  • Turbidity/Sediment
  • Bathymetry and inundated area (< 5m)
  • Island consumptive use: land use/hydrology
  • Particular constituents:
    • Chlorophyll/nutrients
    • Mercury (just askin’)
  • Altimetry (time res? accuracy?)
  • Velocity
  • Salinity

Model hydrodynamics

Important model application

temperature
Temperature
  • Fish
  • Nutrients
  • Hydrodynamics
  • Etc…

Comparison by Yi Chao, JPL

turbidity sediment
Turbidity/Sediment
  • Utilized by Smelt/Salmon
    • Aquatic discussion
  • Mercury in Yolo
inundated region
Inundated Region
  • Applications:
    • Flooding
    • Yolo habitat
    • Elevation maps
  • Resolution:
    • Habitat: 10-20m
    • Elev maps < 5m

Source: MODIS

bathymetry in the intertidal zone
Bathymetry in the Intertidal Zone
  • High resolution data but…
  • Land water interface gaps up to 40m wide
  • Imaging may help
  • Vegetation maps may help
    • also help with roughness
delta island consumptive use
Delta Island Consumptive Use
  • Major uncertainty
    • Flow and salt/quality
  • Diversions and returns
  • Modeled using:
    • Land use/crops
    • Hydrology
altimetry
Altimetry
  • Applications:
    • Storm surge + sea level rise
    • Initialization
    • Validation
  • At issue:
    • Resolution
    • Accuracy (differential?)
    • How often?
  • Can learn bathymetry from inundated area
    • or IA from bathymetry and altimetry

San Francisco

velocity
Velocity
  • We are starting to use HF Radar in the Bay:
    • Model validation
    • Initialization/assimilation
salinity
Salinity
  • Probably not a hyperspectral item
    • L-band?
    • Indirect measurement?
  • Lots of ground truth
  • Scale issues:
    • Bay: lots of water, medium PSU
    • Delta: small channels, < 1 PSU
      • But that is where the glory is, policy-wise
overarching conclusions
Overarching conclusions
  • The problem is multi-scale
    • The difficult, narrow place is where the glory is (DWR)
    • The Bay/estuary is needed “on the way up”
  • Two goals 1) improve models and 2) enable new studies
  • Real-time info is valuable for operations but …
  • Planning is often hypothetical and the payoff to improving planning is big.
contact info
Contact Info

Eli Ateljevich

eli@water.ca.gov