How navigable are fluid mud layers?

Safe navigation through ports and waterways is determined by the space available under a ship's keel, but a seabed of fluid mud can get in the way.

Is high quality sediment monitoring worth its weight in gold?
Is high quality sediment monitoring worth its weight in gold?

Dredging activities often result in the suspension of sediment into the water column in the vicinity of the activity. Sediment release to the aquatic environment and the effects of this release are often the prime environmental concern associated with dredging.

Sediment Transport and Sediment Management in the Elbe Estuary, Germany
Sediment Transport and Sediment Management in the Elbe Estuary, Germany

To manage costs and the long-term effects of dredging in highly dynamic estuarine areas, continued scientific research, modelling and analysis are indispensable.

Remediation of Contaminated Sediment: A Worldwide Status Survey of Regulation and Technology
Remediation of Contaminated Sediment: A Worldwide Status Survey of Regulation and Technology

Remediation projects are becoming more frequent: Here’s a snapshot of the current state of the industry, including which countries at present have a regulatory framework and/or technical framework in place (and which do not), and what technologies are actively being used.

Possibilities of Minimising Sedimentation in Harbours in a Brackish Tidal Environment
Possibilities of Minimising Sedimentation in Harbours in a Brackish Tidal Environment

By studying the different mechanisms of sediment movement, solutions were developed to reduce sedimentation in harbours, and thus reduce the need for maintenance dredging.

The Day After We Stop Dredging: A World Without Sediment Plumes?
The Day After We Stop Dredging: A World Without Sediment Plumes?

To assess the environmental benefits of an “idyllic” world without dredging, the impacts of dredging activities are compared to the impacts of other human and natural sources of sediment plumes.

Deepening, Cleaning and Processing Sediment from the Miami River
Deepening, Cleaning and Processing Sediment from the Miami River

The Miami River corridor was home to early Native American settlements, and in the early 1900s it was dredged in order to assist in draining the Everglades, the subtropical marshland in southern Florida. As the city of Miami developed, the river became a major outlet for storm water and untreated sewage. In 1990 the USACE recommended that maintenance dredging be done to remove sediments impacting navigation.

Morphodynamic-Numerical Simulations of Dredged Matter Open Disposal
Morphodynamic-Numerical Simulations of Dredged Matter Open Disposal

This study analysing changes in the bottom-topography at dredged material disposal sites and the interaction between disposed matter and the surrounding density currents received the IADC Award at the CEDA Dredging Days.