South Esk Hydrological Sensor Web - Tasmania, Australia
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The Sensor Web is an advanced type of spatial data infrastructure in which different sensor assets can be combined to create a macro-instrument with massive sensing capability. This macro-instrument can be instantiated in many ways to achieve multi-modal observations across different spatial and temporal scales.
CSIRO is investigating how emerging standards and specifications for Sensor Web Enablement can be applied to the hydrological domain. To this end, CSIRO is implementing a Hydrological Sensor Web in the South Esk river catchment in NE Tasmania. The South Esk river catchment was chosen because of its size (3350km2, large enough to show up differences in catchment response to rainfall events), spatial variability in climate (there is an 800mm range in average annual rainfall across the catchment), fickle nature of seasonal flow, and relatively high-level of instrumentation. In 2011, the South Esk Hydrological Sensor Web was awarded the National iAward in the category of Sustainability and Green IT.
The Google Maps™ pane below presents a federated view of near real-time sensor data from the different sensor networks operating in the South Esk catchment. This is made possible by re-publishing near real-time sensor data provided by the Bureau of Meteorology (BoM), Hydro Tasmania, Tasmania Department of Primary Industries, Parks, Wildlife and Environment (DPIPWE), Forestry Tasmania and CSIRO via a standard web service interface (Sensor Observation Service) developed by the Open Geospatial Consortium (OGC). The Sensor Observation Service implementation that CSIRO is using was developed by 52North. Exposing sensor data via standard web service interfaces provides a much richer picture of what is going on in the catchment (enhanced situation awareness).
Each marker on the map represents a sensor and/or group of sensors. Markers are colour-coded to differentiate between the different agencies operating sensor assets in the catchment. Clicking on a marker will open a pop-up where recent sensor time series data can be viewed. The full dataset for each sensor can be accessed using the time series catalog. For faster response view using the Google Chrome web browser.