Real-time Monitoring of the Derwent and Huon Estuaries in Southern Tasmania

Greg TimmsSenior Research ScientistTasmanian ICT Centre, CSIRO20 May 2009

Wealth from Oceans

The Tasmanian Marine Analysis Network (TasMAN)

Collecting and integrating real-time data to support multiple uses of the Derwent/Huon/Channel Region in southern Tasmania

• The role of the Tasmanian ICT Centre• Present existing data in a standard format/interface• Set up infrastructure/communications to enable real-time data collection from

the region• New data collection technologies• Data management and streaming data processing (e.g. event detection)• Integration of data with CSIRO models for forecasting• Data visualisation

• Current partners/data providers/stakeholders• HydroTas• Bureau of Meteorology• IMOS• CSIRO Marine and Atmospheric Research

The role of sensor networks

• Provide the ability to collect real-time and near real-time data• Automated collection

• Enables quick response to events

• Monitor recovery

• Limits costs and liabilities

• Enables reliable short-term forecasts (when coupled with models)

TasMAN

• Sensor locations• CSIRO Wharf

• Derwent mouth

• Mid-Derwent

• North-West Bay

• Huon

• Storm Bay

• Temp & Salinity initially• Turbidity/ Dissolved O2 /

Fluorescence later

Derwent

D’EntrecasteauxChannel

Surface nodeUnderwater node

Huon

Derwent

D’EntrecasteauxChannel

Deployed nodePlanned node

Huon

SeaBirdSBE-37 sensor

acoustic modem with batteries and Fleck

Sensor Cluster – Mouth of the Derwent

inductive cable withattached sensors

mooring

high gain (7 dBi)antenna

acousticrelease

pycnocline mooring chain

Fixed automated sensors

• Time series data, single location• Real-time comms (Radio, Acoustic, Satellite, 3G phone) or

loggers

Fixed automated sensors - challenges

• Security (particularly in coastal and estuarine environments)• Physical damage (waves, wind, etc)• Permissions• Cost – $3k up to $150k+• Deployment/maintenance• Biofouling

Mobile sensor nodes

CSIRO Autonomous Underwater Vehicle

• Now at third generation

• Starbug research focus• Vision-based navigation & control• Autonomy• Cooperative robotics• Human robot interface• 3D visualisation• Robot sensor network interaction

• Starbug specifications• Mass: 26kg• Length: 1.2 m• Propulsion: 5 thrusters• Endurance: 12 hrs @ 0.6m/s• Sensors: 4 cameras, pressure, GPS

Autonomous Data Collection

Autonomous Data Collection – depth profile

Autonomous Data Collection – depth profile

Identifying events in the river

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8/08/2008 10/08/2008 12/08/2008 14/08/2008 16/08/2008 18/08/2008 20/08/2008 22/08/2008

Date

Wa

ter

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era

ture

(d

eg

C)

CSIRO Wharf (Depth: -9.5 m)

Tinderbox (Depth: -16.5 m, 19 km downstream)

Channel (Depth: -17.5 m, 20 km downstream)

Snow melt? – a cold water plume in the Derwent (Aug 2008)

Integrating with models - output

Bluelink Model(Global Ocean Forecasting)

10km grid

SE Tasmania Model (CMAR) (Ocean/Estuary Forecasting)

polar grid – 400m to 2km

MESOLAPS Model(Global Atmospheric Model)

Derwent River Flowand temperature

(Hydro Tas)hourly data

Huon River Flow(BoM)

hourly data

Hobart wind speed and direction

(BoM)hourly data

TasMAN (Tas ICT Centre)15 min temperature and salinity

data at six locations

Nowcast and up to 24 hour forecast of salinity and

temperature in estuaries and coastal waters of SE Tasmania

Model-Sensor Integration (current situation)

Comparison

Bluelink Model(Global Ocean Forecasting)

10km grid

SE Tasmania Model (CMAR) (Ocean/Estuary Forecasting)

polar grid – 400m to 2km

MESOLAPS Model(Global Atmospheric Model)

Derwent River flowand temperature

(Hydro Tas)hourly data

Huon River flow(BoM)

hourly data

Hobart wind speed and direction

(BoM)hourly data

TasMAN (Tas ICT Centre)15 min temperature, chlorophyll, dissolved oxygen and salinity data at 15-17 locations

Nowcast and up to 24 hour forecast of salinity

and temperature in estuaries and coastal

waters of SE Tasmania

Model-Sensor Integration (plan)

Maria Island NRS (IMOS)

hourly data

Early warning andpredicted movement

of algal blooms

Identification of systemic changes in

river conditions

Identification ofnew sites

suitable for marine industry

Sensor tasking

TasMAN - Data Visualisation

Sensor Observation Service (April 2009)

TasMAN - Data Visualisation

Web interface (November 2008)

Thank you

Tasmanian ICT CentreDr Greg TimmsSenior Research Scientist

Phone: +61 3 6232 5572Email: greg.timms@csiro.auWeb: www.csiro.au/science/TasMAN

Contact UsPhone: 1300 363 400 or +61 3 9545 2176Email: Enquiries@csiro.au Web: www.csiro.au