Table 1: Classification Thresholds and Relationship to Visible Oil Groups
DV SEACAST Hypothetical
Threshold Image Thickness Oil Appearance
Colour (um)
> 7700 light grey 0.0 Ambient sea
3000 <DV x 7700 mid-grey 0.08 Visible as silvery sheen (light oiling)
s 3000 dark grey 2.0 Darker brown colours (heavy oiling)
Radarsat NOAA
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Seacast
Figure 5 Data Flow Diagram for the SEACAST System Showing Data Dissemination Over the Internet.
432 Intemational Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 7, Budapest, 1998
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