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Assessment of Sediment Yield according to Observed Dataset

  • Lee, Sangeun (Department of Energy and Mineral Resources Engineering, Kangwon National University) ;
  • Kang, Sanghyeok (Department of Civil Engineering, Kangwon National University)
  • Received : 2016.10.09
  • Accepted : 2016.10.21
  • Published : 2016.10.31

Abstract

South Korea is a maritime nation, surrounded by water on three sides; hence, it is important to preserve in a sustainable manner. Most areas, especially those bordering the East Sea, have been suffering from severe coastal erosion. Information on the sediment yield of a river basin is an important requirement for water resources development and management. In Korea, data on suspended sediment yield are limited owing to a lack of logistic support for systematic sediment sampling activities. This paper presents an integrated approach to estimate the sediment yield for ungauged coastal basins by using a soil erosion model and a sediment delivery rate model in a geographic information system (GIS)-based platform. For applying the sediment yield model, a basin specific parameter was validated on the basis of field data, that, ranging from 0.6 to 1.2 for the 19 gauging stations. The calculated specific sediment yield ranged from 17 to $181t/km^2.yr$ in the various basin sizes of Korea. We obtained reasonable sediment yield values when comparing the measured data trends around the world with those in Korean basins.

Keywords

Monsoon region;Sediment delivery rate;Sediment yield;Modeling

Acknowledgement

Supported by : Kangwon National University

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