Sediment Oxygen Demand Measurements Using Benthic Flux Chambers,
Abstract
Benthic flux chambers work according to a simple principle. Reactions taking place between sediment particles, pore waters, and the overlying water can be monitored by isolating a small volume of bottom water and observing the change in chemistry of this water with time. Benthic flux chambers are instruments that isolate bottom water in contact with the sediment and either monitor the chemistry of this water using sensors or collect subsamples of this water for subsequent chemical determination. In either case, a flux, or the rate of exchange of a substance between the sediment and overlying water, is determined by calculating the rate of change of species concentration within the chamber. It is very important that the flux chamber materials provide neither a source nor sink for the chemical species measured; this is especially important for oxygen flux measurements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1992
- Accession Number
- ADP007793
Entities
People
- Douglas E. Hammond
- William M. Berelson
Organizations
- University of Southern California