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dc.contributor.advisor
dc.contributor.authorStolzenbach, Keith D.
dc.contributor.authorNewman, Kathleen A.
dc.contributor.authorWong, Charles S.
dc.date.accessioned2017-11-03T20:18:11Z
dc.date.available2017-11-03T20:18:11Z
dc.date.issued1992-11-15
dc.identifier.citationStolzenbach, Keith D., Kathleen A. Newman, and Charles S. Wong. "Aggregation of Fine Particles at the Sediment-Water Interface." Journal of Geophysical Research, 97, no. Cl l (15 November 1992): 17889-17898. DOI: 10.1029/92JC01827.en_US
dc.identifier.issn0148-0227
dc.identifier.urihttp://hdl.handle.net/10680/1324
dc.description.abstractThe presence of a bottom sediment layer agitated by mechanical stirring or by resident organisma (tubificid oligochaetes) significantly increases the rate at which fine (1 µm) cohesive particles are removed from suspension in laboratory columns. Measured rates of particle removal are equivalent to deposition velocities ranging from 0.23 m per day to 0.41 m per day. These rates are an order of magnitude faster than deposition by gravitational settling or coagulation with larger particles in the water column as observed in experimental controls. It is hypothesized that the increased removal rate is the result of aggregation in a sediment layer at the bed-water interface characterized by loosely bound (fluffy), porous material hydrodynamically coupled to the water column. According to this hypothesis particle removal occurs when motion of the overlying water or organism activity causes suspended fine particles to collide with and stick to the interfacial sediment. This new hypothesis is supported by the mass and size distribution of tracer particles recovered in cores and sediment traps at a coastal site and by theoretical estimates of interfacial aggregation rates.en_US
dc.description.sponsorshipThis work was supported by EPA grant CR-81181-01-01, by the MIT Sea Grant College Program, under NOAA Grant NA86AA-D-SG089, and by a postgraduate scholarship awarded to the second author by the Natural Sciences and Engineering Research Council of Canada.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/92JC01827
dc.language.isoenen_US
dc.publisherAmerican Geophysical Unionen_US
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectBenthic boundary layersen_US
dc.subjectErosion and sedimentation
dc.subjectMarine pollution
dc.titleAggregation of Fine Particles at the Sediment-Water Interfaceen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/92JC01827


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