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  • Evaluating Cross-Shore Sediment Grain Size Distribution, Sediment Transport, and Morphological Evolution of a Nearshore Berm at Fort Myers Beach, Florida

    Abstract: Navigation channels are periodically dredged to maintain safe depths. Dredged sediment was historically placed in upland management areas or in offshore disposal areas. Florida state law prohibits placement of beach fill sediment that contains more than 10% by weight of silt and clay, which is typically a characteristic of dredged material. An alternative is placement in a nearshore berm. Some potential benefits of nearshore berms include wave energy dissipation, reduced cost of dredging and shore protection, and possible onshore movement of the berm material. This study considers sediment distribution, morphological evolution, sediment transport, and shoreline trends along Fort Myers Beach, Florida, related to the nearshore berm constructed in August 2016. Due to timing of the field study, this report also includes information on the influence of a major hurricane that impacted the area. The overall conclusion of this study is that the dredge-sourced sediment in the berm performed as expected. Within 2 years, the berm adjusted to the shoreface environment, maintained a large part of its original volume, and contributed to protection of the beach and shoreline. The impact of Hurricane Irma included a shift in sediment textures and a large but temporary increase in shoreface sediment volumes.
  • PUBLICATION NOTICE: Characterization of eroded mud aggregates with the Flume Imaging Camera System (FICS) and its added value to sediment management projects

    Abstract: The goal of this technical note (TN) is to describe the functionality and added research value of the Flume Imaging Camera System (FICS), a US Army Engineer Research and Development Center (ERDC)-developed system designed to measure the size of sediment particles immediately following erosion.
  • PUBLICATION NOTICE: Technical Feasibility of Creating a Beach Grain Size Database with Citizen Scientists

    ABSTRACT:  The goal of this Coastal and Hydraulics Engineering Technical Note (CHETN) is to investigate the feasibility of collecting beach grain size information with images collected by citizen scientists to build a globally accessible database. Engaging citizen scientists in scientific information collection through crowdsourcing has become a more popular and cost-effective way to collect large amounts of data while increasing interest in the research through public engagement (Irwin 2018). Citizen scientists equipped with their personal smartphones allow for very large datasets to be collected that would otherwise be financially or logistically impossible. Additionally, it provides an opportunity to educate and engage the general public.