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An Analysis of Channel Landforming Characteristics at the Estuary of the Gagokcheon Due to Change in a Riverine Environment

  • Crisisonomy
  • Abbr : KRCEM
  • 2019, 15(8), pp.97-106
  • DOI : 10.14251/crisisonomy.2019.15.8.97
  • Publisher : Crisis and Emergency Management: Theory and Praxis
  • Research Area : Social Science > Public Policy > Public Policy in general
  • Received : July 5, 2019
  • Accepted : August 23, 2019
  • Published : August 31, 2019

Jong Ho Choi 1 Kye-Won Jun 1

1강원대학교

Accredited

ABSTRACT

The estuary of the Gagokcheon flowing into the East Sea is undergoing aggradation. Channel landforming is a process of sediment accretion, gradually establishing vegetation and eventually becoming land. This phenomenon will likely affect riverine ecosystems, interfering with the interaction between water bodies and putting the flood control function of a water channel at serious risk. Several years of intensive stream monitoring in an effort to establish strategies to counter this phenomenon revealed that channel landforming resulted from both natural factors and anthropogenic activities. However, it is difficult to identify its causes quantitatively by the existing onsite monitoring methods. To overcome this problem, this study aims to propose a channel landforming mitigation plan by analyzing the hydraulic characteristics of the Gagokcheon estuary using the 2D hydraulic analysis and sediment transport model, SRH-2D. The study results showed that the change in rainfall patterns has greater impact on aggradation than the artificial change to channel environment.

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