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                  |  |  | ■ 12d Model sample case
 
 
 Measuring the terrain of the lake bottom at intervals, coloring the sediments
(or the deep place), and displaying it on the bottom terrain.
 
 
 
                    
                      
                        |  | -Green mesh | : | Terrain of shore and bottom |  
                        |  | -Blue area | : | Areas where sediments are piled up. Well-colored place shows more deposits.
 |  
                        |  | -Red area | : | Areas where sand is scraped. The deeper the color is, the more sand is scraped.
 |  The places to be colored are determined from the difference between the
terrain created from the previous result and that created from the current
result.
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