Abstract
this study, we investigated a method to strengthen water transport between the sediment and the upper water column in a bay, which is induced by ebb and flood tides as a sediment characteristics improvement technique. For using this model, it turned out that the device, an air holder, newly developed to hold air in sediments. Effect of the device was identified by laboratory experiments under varying water pressure at the same level as ebb and flood tides. The simulation model which is estimated a method is able to estimate the effect on water transport with the device. A compared result of laboratory experiments with simulated results, this model is applicable and the device is useful. Several pieces of the device were laid in the sediments at Ivfiike muddy tidal flat in Omuta City, Fukuoka, Japan. Biological effects were identified by measuring mad flat's oxidation-reduction potential (ORP), that is, the sediments turned aerobic.
