METHANE 



STNH - S • 



600N 



P* 

 RS 



400N 



RS 

 15.87 8.02 P* 



200NW 200N 200NE 



RS P* p* 



RS 8.00 RS RS 



P* RS 



600W 400W 200W CTR 200E 400E 600E 



RS 

 P* 10.50 



200SW 200S 200SE 



KEY 



• 



400S 



* = DREDGED MATERIAL THICKNESS (CM) 



P* = DREDGED MATERIAL THICKER THAN REMOTS 

 WINDOW PENETRATION.(>20CM) 



RS = REDUCED SEDIMENT NEAR THE SEDIMENT - 



WATER INTERFACE IN AT LEAST ONE 9 



REPLICATE IMAGE. 600S 



NO VALUE INDICATES THE ABSENCE OF THESE FEATURES. 



Figure 3-23 A map showing the apparent distribution and 

 thickness of dredged material, averaged by station 

 at the STNH-S site in August 1985. 



