韓国における流砂観測システムの現状と課題

抄録

Since 2013, National Institute of Forest Science started the sediment transport monitoring in mountain rivers to clarify effects of forest damages due to forest fire and landslide on the sediment discharge from mountainous catchment. For this monitoring project, National Institute of Forest Science collaborated with National Institute for Land and Infrastructure Management. We used hydrophone (Japanese pipe hydrophone) for bedload monitoring and turbidity meter for suspended load monitoring. We set three observation stations in 2013, and other three observation stations in 2015. We also focus effects of bedrock geology on sediment discharge, thus, we conducted the sediment discharge monitoring at catchments underlain by three different bedrock geology, such as igneous rock, sedimentary rock and metamorphic rock. We successfully observed the sediment discharge during several heavy rainstorms to date.