□
[□]
□ | □
These changes showed evidence of an ice edge bloom at the pack ice side , relatively low biology at the shelf-slope ( perhaps due to deeper mixing ) , and a coastal shelf increase in these in-situ parameters . Our Revolution was much deeper than that . Before Leg 181 , the ultimate depocenter for material winnowed off the top of the Chatham Rise was unknown , but it seems likely that sediment becomes trapped in topographic lows in deeper waters on both the north and south flanks of the Rise . This zone is favorable for damaging root rot organisms unless it is deeper than the root system . super ( 222 ) Rn is transported from the " shallow crustal fraction " by two mechanisms ; ( a ) by diffusion and ( b ) pressure driven by stable gases of deeper origin .