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Drought Classification Method for Jeju Island using Standard Precipitation Index

표준강수지수를 활용한 제주도 가뭄의 공간적 분류 방법 연구

  • Park, Jae-Kyu (Korea Rural Community Corporation) ;
  • Lee, Jun-ho (Department of Civil Engineering, Jeju National University) ;
  • Yang, Sung-Kee (Department of Civil Engineering, Jeju National University) ;
  • Kim, Min-Chul (Department of Civil Engineering, Jeju National University) ;
  • Yang, Se-Chang (Jeju Special Self-Governing Provincial Council)
  • Received : 2016.09.02
  • Accepted : 2016.11.27
  • Published : 2016.11.30

Abstract

Jeju Island relies on subterranean water for over 98% of its water resources, and it is therefore necessary to continue to perform studies on drought due to climate changes. In this study, the representative standardized precipitation index (SPI) is classified by various criteria, and the spatial characteristics and applicability of drought in Jeju Island are evaluated from the results. As the result of calculating SPI of 4 weather stations (SPI 3, 6, 9, 12), SPI 12 was found to be relatively simple compared to SPI 6. Also, it was verified that the fluctuation of SPI was greater fot short-term data, and that long-term data was relatively more useful for judging extreme drought. Cluster analysis was performed using the K-means technique, with two variables extracted as the result of factor analysis, and the clustering was terminated with seven-time repeated calculations, and eventually two clusters were formed.

Keywords

References

  1. Edwards, D. C., Mckee, T. B., 1997, Characteristics of 20th century drought in the united states at multiple time scales, Atmospheric Science Paper, 634, 101-112.
  2. IPCC, 2007, Climate change 2001 : The scientific basis, IPCC contribution of working group I to the third assessment report of the intergovernmental panel on climate change, Cambridge University Press, Cambridge.
  3. Kim, S. S., 2011, Drought assessment in the Korean Peninsula through drought frequency analysis, University of Seoul.
  4. Kwon, J. J., 2013, Improvement of the classification standard of drought index for the Korean Peninsula, Master Thesis, Seokyeong University.
  5. Lee, D. R., 1999, Relationship between El Ni o/southern oscillation and drought in Korea, Journal of Korea Water Resources Association, 32(2), 111-120.
  6. Lee, E. Y., 2013, Spatial characteristics of drought in South Korea by standard precipitation index, Master Thesis, Konkuk University.
  7. Lee, J. H., 2016, Impact analysis of discharge and drought of climate change scenario in Jeju Island, Jeju National University.
  8. Mckee, T. B., Doesken, N. J., Jleist, J., 1993, The relationship of drought fequency and duration of time scales, Proceedings Eighth Conference on Applied Climatology, Anaheim, C. A., 179-187.
  9. Song, S. H., Choi, K. J., 2012, An appropriate utilization of agricultural water resources of Jeju island with climate change(I), Koran Society of Soil and Groundwater Environment, 17(2), 62-70. https://doi.org/10.7857/JSGE.2012.17.2.062
  10. Song, S. H., Lee, B. S., Choi, K. J., Kim, J. S., Kim, G. P., 2014, Evaluation of drought effect on groundwater system using groundwater level data in Jeju Island, Journal of the Environmental Sciences, 23(4), 637-647. https://doi.org/10.5322/JESI.2014.4.637
  11. Yoon, Y. N., Ahn, J. H., Lee, D. R., 1997, An Analysis of drought using the Palmer's method, Journal of Korea Water Resources Association, 30(4), 317-326.