Relation between Ishikari River mouth stability and construction of the Ishikari Bay New Port

摘要

Changes in river mouth morphology are mainly affected by longshore currents and sediment deposition by the river. River mouth closures are important because they can lead to flooding. Although jetties and river mouth excavation are employed as countermeasures for preventing or limiting river mouth closure, such measures are not long-term solutions to the problem. Stabilization of the river mouth of the Ishikari River on the Ishikari Coast is described in this study.