A Benthic chamber with electric stirrer mixing
Citable URI
https://hdl.handle.net/1912/796DOI
10.1575/1912/796Keyword
Benthic chambers; Submersible motors; Boundary layerAbstract
Benthic chambers incorporating electric stirrer mixing have been designed and tested and have proven reliable during seven 18-31
day, 4300m ocean deployments. The chambers are 21 cm diameter by 31 cm long acrylic tubes sealed with pvc lids. A stepper
motor and pressure tolerant electronics contained within the lids are magnetically coupled to stirring paddles to provide mixing
within the chambers. The stirrers exhibit stable mixing rates and uniform speeds between chambers, require less than 1/3 watt of
power, and are maintenance free. Laboratory calibration of stirring and mixing characteristics demonstrate that areal averaged
equivalent seawater-sediment boundary layer thickness can be set to agree with in situ measured values.
Suggested Citation
Technical Report: Dickinson, Wayne, Sayles, Frederick L., "A Benthic chamber with electric stirrer mixing", 1992-02, DOI:10.1575/1912/796, https://hdl.handle.net/1912/796Related items
Showing items related by title, author, creator and subject.
-
Deployment of the northern fish cage and mooring, University of New Hampshire — Open Ocean Aquaculture Program summer 2000
(Woods Hole Oceanographic Institution, 2000-09)The University of New Hampshire - Open Ocean Aquaculture (UNH-OOA) program has worked for the past few years on developing the technology to deploy and maintain fish cages in open, exposed northern waters. In June 1999, ... -
The Arctic freshwater system : changes and impacts
(American Geophysical Union, 2007-11-20)Dramatic changes have been observed in the Arctic over the last century. Many of these involve the storage and cycling of fresh water. On land, precipitation and river discharge, lake abundance and size, glacier area and ... -
Ocean and coastal acidification off New England and Nova Scotia
(The Oceanography Society, 2015-06)New England coastal and adjacent Nova Scotia shelf waters have a reduced buffering capacity because of significant freshwater input, making the region’s waters potentially more vulnerable to coastal acidification. Nutrient ...
