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Applied Analysis Inc.
630 Boston Road
Suite 201
Billerica, MA 01821
 PH: 978-663-6828
FAX: 978-663-6389



Water Quality Mapping

Applied Analysis Inc. has developed comprehensive, proprietary software for water quality monitoring based on many years of research and experience in spectral analysis algorithm development. This software can be used to map several water quality parameters simultaneously. There are four primary advantages to this approach:

· Provides synoptic view of water body
· Permits repetitive coverage
· Uses multispectral data (not hyperspectral)
· Only requires low-cost data
Chocktawhatchee Bay – 1989 Suspended Minerals on Landsat TM

· TMDL studies
· 301D listing
· Point source and non-point source pollution identification
· Trophic status indications
· Water clarity studies
· Water quality changes over time
Track changes in bottom depth over wide areas
· Supplement point surveys
· Locate navigable passages
· Characterize outflow areas

Our QSC2 software processes multispectral and hyperspectral images to measure the water quality parameters of:

· Suspended Chlorophyll (Chl)
· Suspended Minerals (SM)
· Colored Dissolved Organic Carbon (CDOC)
· Depth
In addition, the following parameters are derived from these measurements:
· Secchi Depth
· Turbidity
· Horizontal and vertical subsurface sighting distance
· Trophic Status Indicator (TSI)

The QSC2 process utilizes subpixel analysis software to compensate automatically for atmospheric effects, sun and sky reflections from the water surface, subpixel contributions from exposed land, and variations in the bottom material properties. The software allows for a direct measurement of the scene-averaged water column characteristics, enabling accurate and uniform water column characterization and scene-to-scene analysis.


AAI's web site has a new look to it. This new look better reflects what AAI is all about. (more)

External Links
· Leica-Geosystems
· Space Imaging
· DigitalGlobe
· SPOT Image
· USGS EarthExplorer
· USGS Landsat 7
· GeoCommunity
· Geography Network
· Flight Landata

Demo web-based mapping using the Geodata Visualization System (more)

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