Abstract
To realize long-term, continuous monitoring of deposition rate of sediments in rivers and coasts, we attempt to present a tipping-bucket type of sediment trap (TST), which was originally developed for measuring bed-load discharge in rivers at low cost. To check the fundamental performance of the TST, we conduct simple laboratory experiments for deposition of sediments. As field tests, we apply the TST to continuous monitoring for the deposition rate of sediments in three rivers. The observed results indicate that the TST can realize the continuous measurements of deposition in rivers. It should be also noted that the temporal variations of deposition rate of sediments during flood events may be observed clearly by using the TST.
