Abstract:

Taking into account the drawbacks in the red tide extraction from single oceanic parameter, this paper presents a new red tide monitoring technique using multiple oceanic parameters. The method focuses on the sea surface temperature and chlorophyll-a concentration retrieved from MODIS imagery. In combination with suspended sediment concentration and sea water abnormalities, we have designed the discrimination rules, which take full advantages of each oceanic parameter to extract red tides, and avoid missing and erroneous information obtained based on a single parameter. MODIS imageries acquired on May 30 and June 11, 2004, covering the Bohai Sea, are taken as an example to show validity and feasibility of the proposed method.

Key words: MODIS, oceanic parameters, red tide monitoring, discrimination rules