03-03-2012, 02:13 PM
USE OF REMOTE SENSING TO ASSESS WETLAND AND WATER QUALITY
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Remote Sensing Techniques to assess wetlands
To conserve and manage wetland resources, it is important to monitor wetlands and their adjacent uplands.
Landsat MSS, Landsat TM, and SPOT are the major satellite systems that have been used to study wetlands
The combination of radar and optical data provide informations for improving wetland classification.
Precipitation
Accurate measurement of precipitation is significant for meteorological research and hydrology.
Ground-based radar is probably the most accurate method of determining a real precipitation in use today
Watershed geometry
Remote sensing data can be used to obtain almost any geographical information
It can provide quantitative topographic information of suitable spatial resolution which are extremely valuable for model inputs.
Drainage basin areas and stream networks are easily obtained from good imagery, even in remote regions
Integration with GIS
The pixel format of digital remote sensing data makes it ideal for merging with geographical information systems (GIS).
Remote sensing incorporated into the system in a variety of ways as
a measure of land use
monitoring of flood areas
rainfall distribution or soil moisture
