Advertisement

Journal of Mountain Science

, Volume 10, Issue 2, pp 199–206 | Cite as

Debris flow in metropolitan area — 2011 Seoul debris flow

  • Chan-Young YuneEmail author
  • Yun-Ki Chae
  • Joongcheol Paik
  • Gihong Kim
  • Seung-Woo Lee
  • Heung-Seok Seo
Article

Abstract

A large number of debris flows occurred simultaneously at around 8:30 to 8:50 a.m. on July 27, 2011, at the center of Seoul, Korea. This area is located in the southern part of Seoul and is a densely populated district. As a result of the debris flow event, 16 people were killed, 30 houses were buried, and 116 houses were damaged around Umyeon Mountain, a relatively small mountain with a height of 312.6 m. Since the debris flow event, field investigations on the initiation and transportation zones of debris flows have been carried out. Rainfall data were collected from the automatic weather stations (AWSs) which are operated by the Korea Meteorological Administration (KMA). Video files recorded by residents were also acquired and used to analyze the flow characteristics of the debris flow. Field investigation shows that about 40 debris flows occurred around Umyeon Mountain and most of the debris flows were initiated by small slope failures. The effects of the precipitation that triggered the debris flows were analyzed as well. A landslide hazard map which considers slope gradient and aspect, strength of soil, hazard record, rainfall conditions, and vegetation, was constructed and compared with the initiation zones of debris flows.

Keywords

Debris flows Field investigation Rainfall Flow characteristics Hazard map 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Cruden DR, Varnes DJ (1996) Landslide types and processes. In: Turner AK and Schuser RL(eds.), Landslides investigation and Mitigation(Special Report 247): 36–75. Transportation Research Board. US National Research Council, Washington DC.Google Scholar
  2. Hutchinson JN (1988) Morphological and geotechnical parameters of landslides in relation to geology and hydrogeology, Landslide Proceeding 5th International Symposium on Landslides 1: 3–35.Google Scholar
  3. Iverson RM, Reid ME, Logan M, et al. (2011) Positive feedback and momentum growth during debris flow entrainment of wet bed sediment. Nature Geoscience 4: 116–121.CrossRefGoogle Scholar
  4. Johnson AM, Rahn PH (1970). Mobilization of debris flows. Zeitschrift fur Geomorphologie 9: 168–186.Google Scholar
  5. Lee SW, Kim GH, Yune CY, et al. (2012) Development of Landslide-Risk Prediction Model thorough Database Construction. Journal of Korea Geotechnical Society 28(4): 23–33. (In Korean)Google Scholar
  6. Paik JC, Park SD (2009) Understanding of debris flow and field monitoring. Journal of Korean Society of hazard mitigation 9(4): 61–70. (In Korean)Google Scholar
  7. Prochaska AB, Santi PM, Higgins JD, et al. (2008) A study of methods to estimate debris flow velocity. Landslides 5(4): 431–444.CrossRefGoogle Scholar
  8. Son SH, Choi B, Paik J (2012) Characteristics of rainfall and groundwater table in a small forested watershed of Mt. Umyeon. Proceedings of 38th Korea Society of Civil Engineering Conference and Civil Expo 2012. Gwangju, Korea. (In Korean)Google Scholar
  9. Yun HJ, Lee CW, Woo CS, et al. (2009) Development of prediction model for the occurrence and damage of debris flow. Korea Forest Research Institute. Research Report 09-20: 92–107. (In Korean)Google Scholar
  10. Yune CY, Jun KJ (2011). National investigation on the landslides and debris flows in 2011, Korea. River and Road in Mountain Area 4: 15–19. (In Korean)Google Scholar

Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Chan-Young Yune
    • 1
    Email author
  • Yun-Ki Chae
    • 1
  • Joongcheol Paik
    • 1
  • Gihong Kim
    • 1
  • Seung-Woo Lee
    • 1
  • Heung-Seok Seo
    • 2
  1. 1.Department of Civil EngineeringGangneung-Wonju National UniversityGangneungSouth Korea
  2. 2.Department of Construction EngineeringGangneung Yeongdong CollegeGangneungSouth Korea

Personalised recommendations