Porewater peepers in tank of
DI water before deployment at Sapelo Island, GA.
Slits in coverplate at 1-2
cm intervals expose underlying chambers (covered by 0.2 micron membrane)
to DI water in tank. The tank is bubbled under N2 gas to remove
O2 before inserting the peepers into the saltmarsh sediment.
The DI water in the chambers will be allowed to equilibrate with the surrounding
sediment pore waters for approximately 4 weeks.
.
Peeper being removed after approximately 4 weeks
equilibration with surrounding sediment pore waters:
After removal, peeper is transported to field laboratory
in portable N2 glovebag to avoid reoxidation of reduced chemical
species in pore waters:
Pore waters are extracted by puncturing glovebag
and membrane covering each chamber with a syringe and withdrawing fluid:
