Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/36997
Title: Sediment sorting by hopper dredging and pump-out operations : conceptual model and literature review
Authors: Priestas, Anthony M.
Smith, S. Jarrell
Brutsche, Katherine E.
Keywords: Beach erosion
Dredges
Dredging
Particle size determination
Sedimentation and deposition
Sediment transport
Shorelines
Publisher: Coastal and Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Report (Engineer Research and Development Center (U.S.));no. ERDC/CHL TR-20-8
Abstract: Dredged sediment placed on beaches or nearshore environments is customarily evaluated for compatibility with the native beach sediment to avoid unintended impacts to economic, environmental, or recreational resources. Consequently, some state regulatory authorities establish limits upon the fine-grained content for sediment designated for placement on certain beaches and nearshore environments. Hopper dredging operations for beach and nearshore placement typically include periods of overflow, which is recognized to produce some degree of separation between the size fractions of the dredged sediment. The degree of separation and the controlling factors of separation are presently poorly known and are the subject of this research. This report provides a conceptual model of the hopper dredging and placement processes, including the relevant processes associated with hopper dredge-associated sediment dynamics, generation and transport of the overflow sediment plume, and sediment winnowing at the beach outflow. Prior research is described, and knowledge gaps are identified. Finally, a research plan to validate prior research and to address knowledge gaps is presented. An annotated bibliography of relevant literature is given in an appendix. Documentation of the planned research presented herein will appear in future publications associated with this study.
Description: Technical Report
Gov't Doc #: ERDC/CHL TR-20-8
Rights: Approved for Public Release; Distribution is Unlimited
URI: https://hdl.handle.net/11681/36997
http://dx.doi.org/10.21079/11681/36997
Size: 53 pages / 1.26 MB
Types of Materials: PDF/A
Appears in Collections:Technical Report

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