Observations of the Sediment-Water Interface: Marine and Fresh Water Environments

Document Type

Article

Publication Date

10-1-2002

Department

Biological Sciences

School

Biological, Environmental, and Earth Sciences

Abstract

The sediment at the interface immediately beneath the water column is distinct from deeper-lying sediments in its properties and, at least quantitatively, in the processes driving diagenesis. Progress in understanding the sediment-water interface can be based on consideration of fundamentals of biogeochemical particle/fluid interactions and on application of certain biological techniques especially suited to this challenging portion of the sediment column. This article reports results achieved by combining theoretical fundamentals and specialized experimental techniques in the study of the interface from selected depositional environments. For fine-grained and sandy deposits from fresh-water to coastal marine environments, the interface is characterized by exaggerated microrelief, great porosity, and significant biological alteration. Additional application of this research approach is poised to further our understanding of engineering, and acoustic and xenochemical responses of sedimentary materials, with special emphasis on the influence of the bio-organic phase of the inter-face upon its fabric and physical properties.

Publication Title

Marine Georesources and Geotechnology

Volume

20

Issue

4

First Page

255

Last Page

274

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