suggested the top of this topographic feature was more severely 

 disturbed than the surrounding seafloor. 



In August, Stage III infauna were evident throughout the 

 mound (Figure 3-16) . Evidence of these high-order successional 

 stages (Figure 3-21) was lacking at several stations (25E, 25W, 

 25S, 200S, and 600E) in the November survey. These stations were 

 concentrated near the center of the mound and indicated greater 

 physical disturbance in that region. The lack of Stage III infauna 

 at station 600E, however, indicated that the surrounding seafloor 

 was also affected. 



The post-storm OSI values (Figure 3-22) were 

 significantly lower than those observed in August (compare with 

 Figure 3-17; Mann-Whitney U-test, p < 0.001). The low OSI values 

 reflected both the shallower RPD values and the retrograde 

 successional status. Overall, the STNH-N disposal mound, 

 previously one of the most successfully recolonized CLIS disposal 

 mounds, had been markedly disturbed by Hurricane Gloria. 



3.3.2 Stamford-New Haven South (STNH-S) 

 August 



The STNH-S disposal mound was surveyed in January and 

 August 1983 and in September 1984. These three surveys consisted 

 of 11 stations located on a cross-shaped sampling grid. On 13 

 August 1985, a REMOTS® survey was performed on an expanded sampling 

 grid identical to the grid used at STNH-N (Figure 3-23) . 



No change in the major modal grain-size was detected in 

 this survey. As documented in earlier surveys, all stations had 

 a major textural mode of >4 phi (silt-clay) with admixtures of very 

 fine sand. 



A visible pre-disposal datum allowed the measurement of 

 dredged material thickness at many stations (Figure 3-23) . An area 

 to the southeast consisting of five stations (400E, 600E, 200SE, 

 400S, and 600S) did not show evidence of the deposition of dredged 

 material. These stations showed high-reflective, thoroughly 

 bioturbated bottom sediments. Reduced sediment was found at or 

 near the surface at 47^ of the STNH-S stations (Figure 3-23) . 



The frequency distribution for boundary roughness (Figure 

 3-24) displayed values which were not significantly different from 

 those found in September 1984. 



The major mode of apparent RPD depths (Figure 3-24) in 

 September 1984 was centered at 4.0 cm, while the major mode 

 recorded for this survey was 3.0 cm. The mapped RPD values (Figure 



11 



