MedFlux collaborative research project

Project Description

The MedFlux collaborative research project will test two hypotheses of the influence of "ballast" on the flux of particulate matter through the water column. It either 1) acts as a physical shielding of the organic matter protecting it as it falls through the water column, or 2) is the ratio of mineral ballast to organic carbon that controls the sinking velocity and consequently the organic carbon flux to the deep sea. The project has two major objectives:

  1. [1] To assess the extent to which settling velocity separation techniques accurately and reliably measure in-situ settling velocities and to devise mechanical improvements and/or statistical correction procedures to overcome any deficiencies.
  2. [2] To develop perspectives and protocols that take advantage of the different sampling characteristics of in-situ pumps, sediment traps, and optical instruments, combined with radiochemical analysis, to assess the dependence of settling velocity and remineralization on particle size and the organic and inorganic composition of particles.

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Lead Principal Investigator

Cindy Lee (Stony Brook University, NY, USA)

Mailing Address:
Stony Brook University
109 Challenger Hall
Stony Brook, NY 11794-5000
Phone: 631-632-8741
E-mail Address:


list with contact information maintained at SUNY Stonybrook » participant list

Participating Institutions

included in participant list » list of institutions

Project Proposal

original proposal abstract (PDF format)

Project Web Site

at SUNY Stonybrook »

Project Data and Results

Final Database:  access to online relational database of final data
MedFlux web site:  online archive of original project cruise data

Related Info

funding is provided by the U.S. National Science Foundation