Estuarine sediment transport by gravity-driven movement of the nepheloid layer, Long Island Sound
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Abstract
Interpretation of sidescan-sonar imagery provides evidence that down-slope gravity-driven movement of the nepheloid layer constitutes an important mode of transporting sediment into the basins of north-central Long Island Sound, a major US East Coast estuary. In the Western Basin, this transport mechanism has formed dendritic drainage systems characterized by branching patterns of low backscatter on the seafloor that exceed 7.4 km in length and progressively widen down-slope, reaching widths of over 0.6 km at their southern distal ends. Although much smaller, dendritic patterns of similar morphology are also present in the northwestern part of the Central Basin. Because many contaminants display affinities for adsorption onto fine-grained sediments, and because the Sound is affected by seasonal hypoxia, mechanisms and dispersal pathways by which inorganic and organic sediments are remobilized and transported impact the eventual fate of the contaminants and environmental health of the estuary.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Estuarine sediment transport by gravity-driven movement of the nepheloid layer, Long Island Sound |
| Series title | Geo-Marine Letters |
| DOI | 10.1007/s00367-008-0118-2 |
| Volume | 28 |
| Issue | 4 |
| Year Published | 2008 |
| Language | English |
| Contributing office(s) | Woods Hole Coastal and Marine Science Center |
| Description | 10 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Geo-Marine Letters |
| First page | 245 |
| Last page | 254 |
| Country | United States |
| State | Connecticut, Massachussetts, New York |
| Other Geospatial | Long Island Sound |
| Google Analytic Metrics | Metrics page |