Rosette Sampler

General Information

Water sampling devices range from a bucket dropped over the side of a small boat to large water bottles sent toward the deep ocean seafloor on a wire. Probably the most commonly used water sampler is known as a rosette. It is a framework with 12 to 36 sampling bottles (typically ranging from 1.2- to 30-liter capacity) clustered around a central cylinder, where a CTD or other sensor package can be attached.

Technical Information

Advantages:
Relatively simple to use (rosette only)

Disadvantages:
Heavy to transport/deploy
May be very fragile

Deployment Gear/Constraints

Heavy gauge winch wire
High capacity boat

Further Information

Introductory text modified from: University-National Oceanographic Laboratory System (UNOLS), The Research Fleet, edited by Vicky Cullen; Moss Landing Marine Laboratories, Moss Landing, CA; 2000.

Water Sampling Rosette with CTD, Reykjavik, Iceland. (Photo by Dan Torres, Woods Hole Oceanographic Institution)
Ken Buesseler checking the rosette sampler prior to deployment. (Photo by Ken Kostel, Woods Hole Oceanographic Institution)
CTD rosette sampler deployment operations. (Photo by Dan Torres, Woods Hole Oceanographic Institution)
Alex Bergan and Taylor Crockford on Tioga deck with CTD rosette sampler. (Photo by Peter Wiebe, Woods Hole Oceanohgraphic Institution)