Inland water quality using WorldView-2: Improvements due to enhanced spectral and spatial features

Dekker, Arnold, Malthus, Tim, Cherukuru, Nagur, Park, YoungJe, Anstee, Janet, Botha, Elizabeth, Egli, Nora, Sherman, Brad, Devilla, Rosangela, Clementson, Lesley and Gillan, Kenny (2011). Inland water quality using WorldView-2: Improvements due to enhanced spectral and spatial features. In: 34th International Symposium for Remote Sensing of the Environment. The GEOSS Era: Towards Operational Environmental Monitoring. Proceedings. International Symposium on Remote Sensing of Environment (34th, ISRSE, 2011), Sydney, Australia, (). 10-15 April 2011.

Author Dekker, Arnold
Malthus, Tim
Cherukuru, Nagur
Park, YoungJe
Anstee, Janet
Botha, Elizabeth
Egli, Nora
Sherman, Brad
Devilla, Rosangela
Clementson, Lesley
Gillan, Kenny
Title of paper Inland water quality using WorldView-2: Improvements due to enhanced spectral and spatial features
Conference name International Symposium on Remote Sensing of Environment (34th, ISRSE, 2011)
Conference location Sydney, Australia
Conference dates 10-15 April 2011
Proceedings title 34th International Symposium for Remote Sensing of the Environment. The GEOSS Era: Towards Operational Environmental Monitoring. Proceedings
Place of Publication Haidian District. Beijing, PR China
Publisher ISPRS (International Society for Photogrammetry and Remote Sensing)
Publication Year 2011
Sub-type Published abstract
ISBN 9781877040832
1877040835
Total pages 1
Collection year 2012
Language eng
Formatted Abstract/Summary
Inland water quality needs to be monitored from the scale of ponds, to lakes, rivers and reservoirs, to all water bodies in catchments, nationally and globally. Satellite based earth observation is most likely to be the optimal tool for this purpose. However, most satellite sensors are designed for terrestrial sensing or for coarse scale ocean colour sensing.

For inland water quality remote sensing sufficient spatial and spectral resolution is required to detect and monitor phytoplankton pigments, coloured dissolved organic matter, suspended matter, vertical attenuation of light, macrophytes, bathymetry etc. The WorldView-2 sensor launched in 2009 is closing this gap between high spatial and high spectral resolution and is potentially the most suitable earth observation sensor for all but the largest inland water bodies.

We present preliminary results of a study into the feasibility of using DigitalGlobe WorldView 2 sensor data for mapping blooms and other optical water quality parameters in Lake Burley Griffin (Canberra, Australia). This sensor, launched in late 2009, provides high spatial resolution (1.8 m) and enhanced spectral resolution (8 bands) at high temporal frequency (up to 2.5 day revisit time when pointing from space). The study represents an integration of in situ optical, fluorescence and conventional water quality sampling with laboratory optical characterisation of the waters, combined with optical modelling and image analysis. We test the ability of the enhanced spectral information in WorldView2 to better map water quality parameters across the lake and even to distinguish individual phytoplankton types, specifically cyanobacteria.
Q-Index Code EX
Q-Index Status Confirmed Code
Institutional Status Non-UQ
Additional Notes Presented during Session 6.0.4: "Inland Water Quality" as Oral Presentation 243 (TS-53-1, Ref. 351).

 
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Created: Fri, 23 Mar 2012, 09:43:30 EST by Alexandra Simmonds on behalf of School of Geography, Planning & Env Management