sediment

Swimmers are advised to protect their noses by keeping their heads above water, using nose plugs and avoiding stirring up sediment in stagnant or untreated freshwater.

Legal action has been launched to stop dredged sediment from being dumped in a protected marine area in East Sussex.

It established lasting protection for specified wilderness areas within national forests by prohibiting road construction and logging which can destroy or disrupt habitats, increase erosion and worsen sediment pollution in drinking water, among other outcomes.

They collected more than 40 long cores, or tubes, of seafloor sediment from locations around the peninsula.

The tsunami waves also deposited a large amount of sediment and debris throughout the harbor basin.