Mobile QR Code QR CODE : Journal of the Korean Society of Civil Engineers

  1. ํ•œ์–‘๋Œ€ํ•™๊ต ๋Œ€ํ•™์› ๊ฑด์„คํ™˜๊ฒฝ๊ณตํ•™๊ณผ ์„๋ฐ•์‚ฌ๊ณผ์ • (Hanyang University)
  2. ํ•œ์–‘๋Œ€ํ•™๊ต ๋Œ€ํ•™์› ๊ฑด์„คํ™˜๊ฒฝ๊ณตํ•™๊ณผ ์„๋ฐ•์‚ฌ๊ณผ์ • (DHanyang University)
  3. ์„ฑ๊ท ๊ด€๋Œ€ํ•™๊ต ์ˆ˜์ž์›์ „๋ฌธ๋Œ€ํ•™์› ๋ฐ•์‚ฌ๊ณผ์ • (Sungkyunkwan University)
  4. ํ•œ์–‘๋Œ€ํ•™๊ต ๊ณตํ•™๋Œ€ํ•™ ๊ฑด์„คํ™˜๊ฒฝํ”Œ๋žœํŠธ๊ณตํ•™๊ณผ ๊ต์ˆ˜ (Hanyang University)


์ด๋ณ€๋Ÿ‰ ๊ฐ€๋ญ„๋นˆ๋„ํ•ด์„, ๋‹ค๋ชฉ์ ๋Œ, ์šฉ์ˆ˜๊ณต๊ธ‰๋Šฅ๋ ฅ, ์ด์ˆ˜์•ˆ์ „๋„
Bivariate drought frequency analysis, Multi-purpose dam, Water supply capacity, Water supply safety

  • 1. ์„œ ๋ก 

  • 2. ์—ฐ๊ตฌ๋ฐฉ๋ฒ•

  •   2.1 ์ˆ˜๋ฌธํ•™์  ๊ฐ€๋ญ„์˜ ์ •์˜

  •   2.2 ์ด๋ณ€๋Ÿ‰ ๊ฐ€๋ญ„๋นˆ๋„ํ•ด์„

  • 3. ์—ฐ๊ตฌ์ง€์—ญ ๋ฐ ์ž๋ฃŒ

  • 4. ์ ์šฉ ๋ฐ ๊ฒฐ๊ณผ

  •   4.1 ๊ฐ€๋ญ„์‚ฌ์ƒ์˜ ์ •์˜

  •   4.2 ์šฐ๋ฆฌ๋‚˜๋ผ ๊ณ„์ ˆ๋ณ„ ๊ฐ€๋ญ„ ํŠน์„ฑ

  •   4.3 ๊ณ„์ก€๋ณ„ ์šฉ์ˆ˜๋ถ€์กฑ๋Ÿ‰ ์‚ฐ์ •

  • 5. ๊ฒฐ ๋ก 

1. ์„œ ๋ก 

๊ฐ€๋ญ„์€ ๊ด€์ ์— ๋”ฐ๋ผ ๊ธฐ์ƒํ•™์ , ์ˆ˜๋ฌธํ•™์ , ๋†์—…์ , ์‚ฌํšŒ๊ฒฝ์ œ์  ๊ฐ€๋ญ„์œผ๋กœ ๋ถ„๋ฅ˜๋˜๊ณ  ์žˆ์œผ๋‚˜ ์ผ๋ฐ˜์ ์œผ๋กœ ํ‰๋…„๋ณด๋‹ค ์ ์€ ์–‘์˜ ๊ฐ•์ˆ˜๋Ÿ‰ ๋˜๋Š” ํ•˜์ฒœ์œ ๋Ÿ‰์ด ๋ฐœ์ƒํ•˜๋Š” ๊ฒƒ์œผ๋กœ์จ ์ •์˜ํ•  ์ˆ˜ ์žˆ๋‹ค. ๊ฐ€๋ญ„๊ณผ ๋ฌผ ๋ถ€์กฑ์€ ๊ฐ™์€ ๊ฐœ๋…์œผ๋กœ ์ดํ•ด๋˜๋Š” ๊ฒฝ์šฐ๊ฐ€ ๋งŽ์ง€๋งŒ, ๊ฐ€๋ญ„์€ ๊ธฐ์ƒ ๋ณ€๋™์— ์˜ํ•ด ๋ฐœ์ƒํ•˜๋Š” ์ž์—ฐ์žฌํ•ด์ด๋ฉฐ ๋ฌผ ๋ถ€์กฑ์€ ์ˆ˜์ž์› ์‹œ์Šคํ…œ์˜ ์šด์˜ ์‹คํŒจ๋กœ ์ธํ•ด ์•ผ๊ธฐ๋œ๋‹ค(Van Loon and Van Lanen, 2012). ๋”ฐ๋ผ์„œ ์šฉ์ˆ˜์˜ ๋ถ€์กฑ์€ ์ฃผ๋กœ ์šฉ์ˆ˜ ๊ณต๊ธ‰ ๋ฐ ์ˆ˜์š”์˜ ๋ณ€ํ™”์— ์˜ํ•œ ๊ฒƒ์ด๋ฉฐ ์ˆ˜์ž์› ์‹œ์Šคํ…œ ๋‚ด์˜ ์œ ์ž…๋Ÿ‰๊ณผ ์œ ์ถœ๋Ÿ‰์˜ ๊ท ํ˜•์ด ๋ฌด๋„ˆ์งˆ ๋•Œ ๋ฐœ์ƒํ•œ๋‹ค. ์ด๋Š” ์ฃผ๋กœ ์ˆ˜์ž์›์˜ ๋ถ€์ ์ ˆํ•œ ๊ด€๋ฆฌ ๋˜๋Š” ์ธ๊ฐ„์‚ฌํšŒ์˜ ๋ณ€ํ™”์— ์˜ํ•œ ๊ฒƒ์ด์ง€๋งŒ ๋Œ€๋ถ€๋ถ„์˜ ๊ฒฝ์šฐ ์šฉ์ˆ˜๋ถ€์กฑ์€ ์‹ฌ๊ฐํ•œ ๊ฐ€๋ญ„์‚ฌ์ƒ์œผ๋กœ ์ธํ•ด ์ด‰๋ฐœ๋œ๋‹ค.

์ด์ˆ˜์•ˆ์ „๋„๋ž€ ์šฉ์ˆ˜๊ณต๊ธ‰์„ ์œ„ํ•œ ์‹œ์„ค์ด ์šฉ์ˆ˜์ˆ˜์š”์— ๋Œ€ํ•ด ์‹คํŒจํ•˜์ง€ ์•Š๊ณ  ์šฉ์ˆ˜๋ฅผ ๊ณต๊ธ‰ํ•  ์ˆ˜ ์žˆ๋Š” ์•ˆ์ •์„ฑ ์ •๋„๋ฅผ ์˜๋ฏธํ•˜๋ฉฐ, ์šฉ์ˆ˜๊ณต๊ธ‰์‹œ์„ค์˜ ์„ค๊ณ„ ๋ฐ ์šด์˜์˜ ๊ธฐ์ค€์œผ๋กœ ์‚ฌ์šฉ๋œ๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ ์šฐ๋ฆฌ๋‚˜๋ผ์˜ ๊ฒฝ์šฐ ์น˜์ˆ˜์™€ ๊ด€๋ จ๋œ ์ˆ˜์ž์›์‹œ์„ค์˜ ์šด์˜ ๋ฐ ์„ค๊ณ„ ๊ธฐ์ค€์€ ๋ช…ํ™•ํ•˜๊ฒŒ ์ œ์‹œ๋˜์–ด ์žˆ๋Š” ๋ฐ˜๋ฉด, ์ด์ˆ˜์— ๋Œ€ํ•œ ์•ˆ์ „๋„๋ฅผ ํ‰๊ฐ€ํ•˜๊ธฐ ์œ„ํ•œ ํ‘œ์ค€ํ™”๋œ ๋ฐฉ๋ฒ•์€ ์ •๋ฆฝ๋˜์ง€ ์•Š์€ ์‹ค์ •์ด๋‹ค. ์šฐ๋ฆฌ๋‚˜๋ผ์˜ ์šฉ์ˆ˜๊ณต๊ธ‰๋Šฅ๋ ฅ ํ‰๊ฐ€ ์ง€ํ‘œ๋Š” ์ฃผ๋กœ ๋ณด์žฅ๊ณต๊ธ‰๋Ÿ‰๊ณผ ์‹ ๋ขฐ๋„ ๊ธฐ์ค€์ด ์‚ฌ์šฉ๋˜๋ฉฐ, ์ผ๊ด€๋œ ์ง€์นจ์ด ์—†๊ธฐ ๋•Œ๋ฌธ์— ๋Œ์„ ์„ค๊ณ„ํ•  ๋•Œ๋งˆ๋‹ค ์‚ฌ์šฉ๋œ ์ž๋ฃŒ๊ธฐ๊ฐ„๊ณผ ํ‰๊ฐ€ ๊ธฐ์ค€์ด ๋‹ค๋ฅด๊ฒŒ ์ ์šฉ๋˜์—ˆ๋‹ค. ๋˜ํ•œ ๊ฐ€๋ญ„์„ ํ‰๊ฐ€ํ•  ๊ฒฝ์šฐ, ๋ฌผ ๋ถ€์กฑ ์ด๋Ÿ‰๋งŒ์„ ์‚ฐ์ •ํ•˜์˜€๊ณ , ๊ฐ€๋ญ„ ์ง€์†๊ธฐ๊ฐ„์— ๋Œ€ํ•œ ๊ณ ๋ ค๋ฅผ ํ•˜์ง€ ๋ชปํ–ˆ๋‹ค.

๋”ฐ๋ผ์„œ ์„ค๊ณ„ํ™์ˆ˜๋Ÿ‰์„ ํ†ตํ•ด ์ˆ˜๊ณต๊ตฌ์กฐ๋ฌผ์˜ ์„ค๊ณ„ ๊ธฐ์ค€ ๋ฐ ์•ˆ์ „๋„๋ฅผ ํ‰๊ฐ€ํ•˜๋Š” ๊ฒƒ๊ณผ ๊ฐ™์ด, ๊ฐ€๋ญ„์— ๋Œ€ํ•ด์„œ๋„ ์œ ์—ญ์˜ ๊ฐ€๋ญ„์žฌํ˜„ํŠน์„ฑ์„ ํ†ตํ•ด ์ˆ˜์ž์› ์‹œ์Šคํ…œ์˜ ์œ„ํ—˜๋„์™€ ์šฉ์ˆ˜๊ณต๊ธ‰๋Šฅ๋ ฅ์„ ํ‰๊ฐ€ํ•  ํ•„์š”์„ฑ์ด ์žˆ๋‹ค. ๊ฐ€๋ญ„์˜ ๋ฐœ์ƒํŠน์„ฑ์„ ํ™•๋ฅ ๋ก ์ ์œผ๋กœ ์ถ”๋ก ํ•˜๊ธฐ ์œ„ํ•ด์„œ๋Š” ํ™•๋ฅ ๋ก ์  ๋นˆ๋„ํ•ด์„๋ฐฉ๋ฒ•์„ ์ ์šฉํ•  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ์ด๋ฅผ ํ†ตํ•ด ๊ฐ€๋ญ„์— ๋Œ€ํ•œ ์ˆ˜๋ฌธํ•™์  ์œ„ํ—˜๋„๋ฅผ ์ •๋Ÿ‰ํ™”ํ•˜์—ฌ ๋‚˜ํƒ€๋‚ผ ์ˆ˜ ์žˆ๋‹ค. ํ™•๋ฅ ๋ก ์  ํ•ด์„๋ฐฉ๋ฒ•์— ๊ธฐ์ดˆํ•œ ๊ฐ€๋ญ„์˜ ์žฌํ˜„ํŠน์„ฑ ํ‰๊ฐ€๋Š” ๋‹ค์–‘ํ•œ ์ง€์—ญ์—์„œ์˜ ๊ฐ€๋ญ„ ์œ„ํ—˜๋„ ํ‰๊ฐ€๋ฅผ ์œ„ํ•ด ์ ์šฉ๋œ ๋ฐ” ์žˆ๋‹ค(Ganguli and Reddy, 2012; Li et al., 2015; Yoo et al., 2016a; Yu et al., 2016). ๋˜ํ•œ ๊ฐ€๋ญ„ ๋™์•ˆ ์ง€์—ญ์˜ ์šฉ์ˆ˜๊ณต๊ธ‰๋Šฅ๋ ฅ์„ ํ‰๊ฐ€ํ•˜๊ธฐ ์œ„ํ•œ ํ™•๋ฅ ๊ฐ€๋ญ„์‹ฌ๋„(design drought)์˜ ๊ฐœ๋…์ด ์ œ์‹œ๋œ ๋ฐ” ์žˆ๋‹ค(Frick et al., 1990; Yoo et al., 2016b). ๊ทธ๋Ÿฌ๋‚˜ ํ™์ˆ˜์™€ ๋‹ค๋ฅด๊ฒŒ ๊ฐ€๋ญ„์€ ์‹ฌ๋„์™€ ์ง€์†๊ธฐ๊ฐ„์˜ ๋‘ ๊ฐ€์ง€ ๋ณ€์ˆ˜๋ฅผ ํ†ตํ•ด ์ •์˜๋˜๋Š” ์ด๋ณ€๋Ÿ‰ ์ˆ˜๋ฌธ์‚ฌ์ƒ์ด๋‹ค. ์ด๋Ÿฌํ•œ ์ธ์‹์ด ๊ฐ•ํ™”๋จ์— ๋”ฐ๋ผ ์ตœ๊ทผ ์—ฐ๊ตฌ์—์„œ๋Š” ๊ธฐ์กด์˜ ๋‹จ๋ณ€๋Ÿ‰ ๋นˆ๋„ํ•ด์„๋ณด๋‹ค ๋‹ค๋ณ€๋Ÿ‰ ๋นˆ๋„ํ•ด์„์„ ํ†ตํ•ด ์‚ฐ์ •๋œ ๊ฒฐ๊ณผ๋ฅผ ํ†ตํ•ด ์žฌํ˜„ํŠน์„ฑ์„ ๋” ๋ช…ํ™•ํ•˜๊ฒŒ ํŒŒ์•…ํ•  ์ˆ˜ ์žˆ๋Š” ๊ฒƒ์œผ๋กœ ์•Œ๋ ค์ ธ ์žˆ๋‹ค(Shiau and Shen, 2001; Shiau, 2003).

๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ๋Œ ์œ ์—ญ์—์„œ ๋ฐœ์ƒํ–ˆ๋˜ ๊ณผ๊ฑฐ ์ˆ˜๋ฌธํ•™์  ๊ฐ€๋ญ„์‚ฌ์ƒ์„ ์ •์˜ํ•˜๊ณ , ์‹ฌ๋„์™€ ์ง€์†๊ธฐ๊ฐ„์„ ๋ชจ๋‘ ๊ณ ๋ คํ•˜๋Š” ๊ฐ€๋ญ„๋นˆ๋„ํ•ด์„์„ ํ†ตํ•ด ํ™•๋ฅ ๋ก ์ ์œผ๋กœ ์žฌํ˜„ํŠน์„ฑ์„ ํ‰๊ฐ€ํ•˜์˜€๋‹ค. ์ด๋Ÿฌํ•œ ์ด๋ณ€๋Ÿ‰ ๊ฐ€๋ญ„๋นˆ๋„ํ•ด์„ ๊ฒฐ๊ณผ์˜ ์‹ ๋ขฐ๋„๋ฅผ ํฌ๊ฒŒ ์ขŒ์šฐํ•˜๋Š” ๊ณผ์ •์€ ์ฃผ๋ณ€ํ™•๋ฅ ๋ถ„ํฌ๋ฅผ ๊ฒฐํ•ฉํ•˜์—ฌ ๊ฒฐํ•ฉํ™•๋ฅ ๋ถ„ํฌํ•จ์ˆ˜๋ฅผ ์‚ฐ์ •ํ•˜๋Š” ๊ฒƒ์œผ๋กœ, ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ์ฝ”ํ”Œ๋ผ ํ•จ์ˆ˜๋ฅผ ์ด์šฉํ•˜์˜€๋‹ค. ๋ณธ ์—ฐ๊ตฌ์—์„œ ์‚ฐ์ •๋œ ๊ฒฐํ•ฉํ™•๋ฅ ๋ถ„ํฌํ•จ์ˆ˜์˜ ์กฐ๊ฑด๋ถ€ ํ•จ์ˆ˜๋ฅผ ์ด์šฉํ•˜์—ฌ ํŠน์ • ๊ฐ€๋ญ„ ์ง€์†๊ธฐ๊ฐ„์˜ ์žฌํ˜„๊ธฐ๊ฐ„๋ณ„ ๊ฐ€๋ญ„์‹ฌ๋„๋ฅผ ๊ฒฐ์ •ํ•  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ์ด๋ฅผ ํ™•๋ฅ ๊ฐ€๋ญ„์‹ฌ๋„๋กœ์„œ ์ •์˜ํ•˜์˜€๋‹ค. ์ตœ์ข…์ ์œผ๋กœ ํ™•๋ฅ ๊ฐ€๋ญ„์‹ฌ๋„๋ฅผ ํ†ตํ•ด ๋‹ค๋ชฉ์ ๋Œ์ด ํŠน์ • ๊ฐ€๋ญ„ ์กฐ๊ฑด์—์„œ ์šฉ์ˆ˜ ๋ถ€์กฑ ์—†์ด ์•ˆ์ •์ ์ธ ๊ณต๊ธ‰์ด ๊ฐ€๋Šฅํ•œ์ง€ ํ‰๊ฐ€ํ•˜์˜€๋‹ค.

2. ์—ฐ๊ตฌ๋ฐฉ๋ฒ•

2.1 ์ˆ˜๋ฌธํ•™์  ๊ฐ€๋ญ„์˜ ์ •์˜

๊ฐ€๋ญ„์€ ๋‹จ์ˆœํ•œ ๊ฐ•์ˆ˜์˜ ๋ถ€์กฑ ํ˜„์ƒ์—์„œ ์ถœ๋ฐœํ•˜์—ฌ ํŠน์ • ๋ชฉ์ ์„ ์œ„ํ•ด ์‚ฌ์šฉ๋˜๋Š” ์šฉ์ˆ˜์˜ ๋ถ€์กฑ ํ˜„์ƒ์„ ์•ผ๊ธฐํ•˜๊ธฐ ๋•Œ๋ฌธ์— ์‚ฌํšŒ๊ฒฝ์ œ์  ํ”ผํ•ด๋ฅผ ๊ฐ€์ ธ์˜จ๋‹ค. ๊ฐˆ์ˆ˜(low flow)๋Š” ๊ฐ€๋ญ„ ์ƒํ™ฉ์—์„œ ๋ฐœ์ƒ๋˜๋Š” ์ฃผ์š” ํ˜„์ƒ์ด์ง€๋งŒ ๋ฐ˜๋“œ์‹œ ๊ฐ€๋ญ„์„ ๋‚˜ํƒ€๋‚ด๋Š” ๊ฒƒ์€ ์•„๋‹ˆ๋ฉฐ ๊ฐ€๋ญ„์˜ ํฌ๊ธฐ(magnitude)๋ฅผ ๋‚˜ํƒ€๋‚ด๋Š” ์ง€ํ‘œ ์ค‘ ํ•˜๋‚˜์ด๋‹ค. ์ผ๋ฐ˜์ ์œผ๋กœ ๊ฐˆ์ˆ˜์ง€ํ‘œ(low flow index)๊ฐ€ ๋‚˜ํƒ€๋‚ด๋Š” ์ •๋Ÿ‰์ ์ธ ์–‘๊ณผ ๊ฐ€๋ญ„์‚ฌ์ƒ์„ ๋™์ผ์‹œํ•˜๋Š” ๊ฒฝํ–ฅ์ด ์žˆ๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ ๊ฐˆ์ˆ˜์ง€ํ‘œ๋Š” ํŠน์ • ๋ฒ”์œ„๋ฅผ ํ†ตํ•ด ๊ฐˆ์ˆ˜๋Ÿ‰์„ ์ •์˜ํ•˜๋Š” ๋ฐ˜๋ฉด, ์ˆ˜๋ฌธํ•™์  ๊ฐ€๋ญ„์€ ํ•˜์ฒœ์œ ๋Ÿ‰์ด ํ‰๋…„๊ณผ ๋น„๊ตํ•˜์—ฌ ์–ด๋Š ์ •๋„์˜ ๋ถ€์กฑ๋Ÿ‰์ด ์–ผ๋งˆ๋‚˜ ์˜ค๋ž˜ ์ง€์†๋˜๋Š”์ง€ ํฌ๊ธฐ์™€ ๊ธฐ๊ฐ„์„ ํ†ตํ•ด ํŠน์ง•์ง€์–ด์ง„๋‹ค.

๊ฐ€๋ญ„์‚ฌ์ƒ์„ ์ •๋Ÿ‰์ ์œผ๋กœ ํ‘œํ˜„ํ•˜๊ธฐ ์œ„ํ•ด ๊ฐ€์žฅ ๋งŽ์ด ์‚ฌ์šฉ๋˜๋Š” ๋ฐฉ๋ฒ•์€ ์ผ์ • ์ž„๊ณ„์ˆ˜์ค€ ์ดํ•˜์˜ ์—ฐ์†๋œ ๋ถ€์กฑ๋Ÿ‰ ๋ฐœ์ƒ์„ ๊ฐ€๋ญ„์‚ฌ์ƒ์œผ๋กœ ์ •์˜ํ•˜๋Š” ๊ฒƒ์œผ๋กœ, ์ž„๊ณ„์ˆ˜์ค€๋ฐฉ๋ฒ•(threshold level method)์ด๋ผ ํ•œ๋‹ค(Tallaksen, 2000). ์ž„๊ณ„์ˆ˜์ค€์€ ๋‹ค์–‘ํ•œ ๋ฐฉ๋ฒ•์œผ๋กœ ๊ฒฐ์ •๋  ์ˆ˜ ์žˆ์ง€๋งŒ ๊ทธ ๊ฐ’์— ๋”ฐ๋ผ ๊ฐ€๋ญ„์˜ ํŠน์„ฑ์ด ๊ฒฐ์ •๋˜๋ฏ€๋กœ ์ž„๊ณ„์ˆ˜์ค€์˜ ๊ฒฐ์ •์€ ๊ฐ€๋ญ„๋ถ„์„์— ์žˆ์–ด ๊ฐ€์žฅ ์ค‘์š”ํ•œ ๊ณผ์ •์ด๋‹ค. ์ˆ˜๋ฌธํ•™์  ๊ฐ€๋ญ„์˜ ์ž„๊ณ„์ˆ˜์ค€ ๊ฐ’์€ ์ฃผ๋กœ ์œ ์—ญ์˜ ์œ ํ™ฉ๊ณก์„ (flow duration curve)์„ ํ†ตํ•ด ์‚ฐ์ •๋œ๋‹ค.

์ผ(daily) ์ž๋ฃŒ๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ์‚ฐ์ •๋œ ์œ ํ™ฉ๊ณก์„ ์€ ์ผ์œ ๋Ÿ‰๊ณผ ๊ทธ์— ๋”ฐ๋ฅธ ์ดˆ๊ณผํ™•๋ฅ (exceedance probability) ์‚ฌ์ด์˜ ๊ด€๊ณ„๋ฅผ ๋‚˜ํƒ€๋‚ด๋ฉฐ, ์ดˆ๊ณผํ™•๋ฅ  ๊ฐ’์„ ๊ธฐ๋ฐ˜์œผ๋กœ ์œ ์—ญ๋ณ„๋กœ ์ˆ˜๋ฌธํ•™์  ํŠน์„ฑ์˜ ๋น„๊ต๊ฐ€ ๊ฐ€๋Šฅํ•˜๋‹ค. ๋˜ํ•œ ์ผ๋ณ„ ์ž„๊ณ„์ˆ˜์ค€์€ ํ™์ˆ˜๊ธฐ ๋˜๋Š” ๊ฐˆ์ˆ˜๊ธฐ์—๋„ ํ•˜์ฒœ์œ ๋Ÿ‰์ด ๋ถ€์กฑํ•ด์ง€๋Š” ๊ธฐ๊ฐ„์„ ๊ตฌ๋ถ„ํ•˜๋Š”๋ฐ ์œ ์šฉํ•˜๋‹ค. Hisdal and Tallaksen (2003)์€ ๊ธฐํ›„๊ฐ€ ๋‹ค์–‘ํ•œ ์ง€์—ญ์—์„œ๋Š” ๊ณ ์ •๋œ ๊ฐ’๋ณด๋‹ค ๊ณ„์ ˆ๋ณ„ ๋˜๋Š” ์ผ๋ณ„ ๋ณ€๋™์„ฑ์„ ๊ฐ–๋Š” ์ž„๊ณ„์ˆ˜์ค€์„ ์ ์šฉํ•˜๋Š” ๊ฒƒ์ด ๋” ํšจ๊ณผ์ ์ž„์„ ๋ฐํžŒ ๋ฐ” ์žˆ๋‹ค. N๋…„ ๋™์•ˆ์˜ ์ผ ์œ ๋Ÿ‰์ž๋ฃŒ๋ฅผ ์ด์šฉํ•˜์—ฌ ํ•ด๋‹น ์ผ์œ ๋Ÿ‰์— ๋Œ€ํ•œ ์ดˆ๊ณผํ™•๋ฅ ์€ Eq. (1)๊ณผ ๊ฐ™์ด ๊ณ„์‚ฐ๋œ๋‹ค.

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์—ฌ๊ธฐ์„œ, PIC8941.gif๋Š” ์—ฐ์ค‘ t์ผ์— ๋Œ€ํ•œ ์ดˆ๊ณผํ™•๋ฅ ์„ ์˜๋ฏธํ•˜๋ฉฐ, N์€ ๊ธฐ๋ก๋…„์ˆ˜, n์€ ์ผ(day)์ˆ˜, PIC8961.gif๋Š” t์ผ์— ์ธก์ •๋œ ์œ ๋Ÿ‰์˜ ์˜ค๋ฆ„์ฐจ์ˆœ ์ˆœ์œ„์ด๋‹ค.

๊ทธ๋Ÿฌ๋‚˜ ์ด๋Ÿฌํ•œ ์ผ๋ณ„ ์ž„๊ณ„์ˆ˜์ค€์˜ ์ ์šฉ์€ ๋‘ ๊ฐ€์ง€ ๋ฌธ์ œ์ ์„ ์•ผ๊ธฐํ•  ์ˆ˜ ์žˆ๋‹ค. ์ฒซ์งธ, ์—ฐ์†์ด๋ก ์„ ํ†ตํ•ด ๊ฐ€๋ญ„์„ ์ •์˜ํ•  ๋•Œ ํ•˜๋‚˜์˜ ๋Œ€ํ˜• ๊ฐ€๋ญ„์ด ์ž„๊ณ„์ˆ˜์ค€์— ์˜ํ•ด ๋ถ€๋“์ดํ•˜๊ฒŒ ์—ฌ๋Ÿฌ ๊ฐœ์˜ ๋ฏธ์†Œ๊ฐ€๋ญ„(minor drought) ์‚ฌ์ƒ์œผ๋กœ ๋‚˜๋ˆ ์ง€๋Š” ๊ฒฝ์šฐ๊ฐ€ ๋ฐœ์ƒํ•œ๋‹ค. ๋‘˜์งธ, ์งง์€ ๊ฐ„๊ฒฉ์„ ๋‘๊ณ  ์กด์žฌํ•˜๋Š” ์—ฌ๋Ÿฌ ๊ฐœ์˜ ๋ฏธ์†Œ๊ฐ€๋ญ„์€ ์ƒํ˜ธ ์˜์กด์ ์ธ ๊ด€๊ณ„๋ฅผ ๊ฐ€์ง„๋‹ค. ๋”ฐ๋ผ์„œ ๊ฐœ๋ณ„ ๊ฐ€๋ญ„์‚ฌ์ƒ์ด ์„œ๋กœ ๋…๋ฆฝ์ด๋ผ๋Š” ๋นˆ๋„ํ•ด์„์˜ ๊ธฐ๋ณธ ๊ฐ€์ •์„ ๋ฌด๋„ˆ๋œจ๋ฆด ์ˆ˜ ์žˆ๋‹ค. ๋˜ํ•œ ๋ฏธ์†Œ๊ฐ€๋ญ„์€ ๊ทนํ•œ์‚ฌ์ƒ์˜ ๋ถ„์„์— ์žˆ์–ด ์™œ๊ณก์„ ๋ฐœ์ƒ์‹œํ‚ค๋Š” ์›์ธ์œผ๋กœ์จ ์ž‘์šฉํ•˜๊ธฐ๋„ ํ•œ๋‹ค.

์ด๋Ÿฌํ•œ ๋ฌธ์ œ๋Š” ๋‚˜๋ˆ ์ง„ ๋ฏธ์†Œ๊ฐ€๋ญ„์„ ํ•˜๋‚˜์˜ ์‚ฌ์ƒ์œผ๋กœ ๊ฒฐํ•ฉํ•˜๋Š” ๊ฐ€๋ญ„ํ’€๋ง(pooling) ๊ณผ์ •์„ ์ ์šฉํ•จ์œผ๋กœ์จ ํ•ด๊ฒฐํ•  ์ˆ˜ ์žˆ๋‹ค. ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ํ’€๋ง ๊ธฐ๋ฒ•์˜ ํ•˜๋‚˜์ธ Sequent Peak Algorithm (SPA)๋ฅผ ์ ์šฉํ•˜์˜€๋‹ค(Vogel and Stedinger, 1987; Tallaksen et al., 1997).

SPA๋Š” ๋‘ ๊ฐœ์˜ ๊ฐ€๋ญ„์‚ฌ์ƒ ์ค‘ ์ฒ˜์Œ ๋ฐœ์ƒํ•œ ๊ฐ€๋ญ„์— ์˜ํ•ด ๋ฐœ์ƒํ•œ ๋ถ€์กฑ๋Ÿ‰์ด ์ž‰์—ฌ๋Ÿ‰์— ์˜ํ•ด ํšŒ๋ณต๋˜์ง€ ์•Š์•˜๋‹ค๋ฉด, ๊ฐ€๋ญ„์ด ๋๋‚˜์ง€ ์•Š์€ ๊ฒƒ์œผ๋กœ ์ •์˜ํ•˜์—ฌ ๋‘ ๊ฐ€๋ญ„ ์‚ฌ์ƒ์„ ํ•˜๋‚˜์˜ ๊ฐ€๋ญ„์œผ๋กœ ์ •์˜ํ•˜๋Š” ๋ฐฉ๋ฒ•์ด๋‹ค. ์œ ์ž…๋Ÿ‰ Q(t)์—์„œ ์ž„๊ณ„์ˆ˜์ค€์„ ์ œ์™ธํ•œ ๊ณผ๋ถ€์กฑ๋Ÿ‰ w(t)๋Š” Eq. (2)์™€ ๊ฐ™์ด ์‚ฐ์ •ํ•  ์ˆ˜ ์žˆ๋‹ค.

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2.2 ์ด๋ณ€๋Ÿ‰ ๊ฐ€๋ญ„๋นˆ๋„ํ•ด์„

์ด๋ณ€๋Ÿ‰ ๊ฐ€๋ญ„๋นˆ๋„ํ•ด์„์€ ๊ฐ€๋ญ„์‚ฌ์ƒ์˜ ์ฃผ์š” ํŠน์„ฑ์ธ์ž์ธ ์ง€์†๊ธฐ๊ฐ„๊ณผ ์‹ฌ๋„์˜ ๊ฒฐํ•ฉ๋ถ„ํฌ๋ฅผ ํ†ตํ•ด ๋ฐœ์ƒํŠน์„ฑ์„ ํ™•๋ฅ ์ ์œผ๋กœ ๋‚˜ํƒ€๋‚ด๋Š” ๊ณผ์ •์ด๋‹ค. ์ฝ”ํ”Œ๋ผ ํ•จ์ˆ˜๋Š” ์„œ๋กœ ๋‹ค๋ฅธ ์—ฌ๋Ÿฌ ํ™•๋ฅ ๋ถ„ํฌ๋ฅผ ๊ฒฐํ•ฉํ•˜๋Š” ๊ฒƒ์ด ๊ฐ€๋Šฅํ•˜๊ณ , ๋ณ€์ˆ˜๋“ค ์‚ฌ์ด์˜ ์˜์กด๊ตฌ์กฐ๋ฅผ ํŒŒ์•…ํ•˜๊ธฐ ์‰ฝ๊ธฐ ๋•Œ๋ฌธ์— ์ตœ๊ทผ ์ˆ˜์ž์› ๋ถ„์•ผ์—์„œ ๋‹ค์–‘ํ•˜๊ฒŒ ์ ์šฉ๋˜๊ณ  ์žˆ๋‹ค. ๊ฐ€๋ญ„์— ์žˆ์–ด ์žฌํ˜„๊ธฐ๊ฐ„์€ ํŠน์ • ๊ธฐ์ค€ ๊ฐ’๋ณด๋‹ค ์ž‘์€ ํฌ๊ธฐ๋ฅผ ๊ฐ–๋Š” ์‚ฌ์ƒ ์‚ฌ์ด์˜ ํ‰๊ท  ๋ฐœ์ƒ๊ฐ„๊ฒฉ์œผ๋กœ ์ •์˜๋œ๋‹ค. ์ฝ”ํ”Œ๋ผ ํ•จ์ˆ˜๋ฅผ ์ ์šฉํ•œ ๊ฒฐํ•ฉํ™•๋ฅ ๋ถ„ํฌ๋ฅผ ํ†ตํ•ด ์ด๋ณ€๋Ÿ‰ ์žฌํ˜„๊ธฐ๊ฐ„์„ ์‚ฐ์ •ํ•˜๋Š” ๋ฐฉ๋ฒ•์€ Eqs. (3) and (4)์™€ ๊ฐ™๋‹ค(Shiau, 2003).

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์—ฌ๊ธฐ์„œ, FD(d)์™€ FS(s)๋Š” ๊ฐ๊ฐ ๊ฐ€๋ญ„ ์ง€์†๊ธฐ๊ฐ„(D)๊ณผ ์‹ฌ๋„(S)์— ๋Œ€ํ•œ ํ™•๋ฅ ๋ถ„ํฌํ•จ์ˆ˜๋ฅผ ๋‚˜ํƒ€๋‚ด๋ฉฐ C๋Š” ์ฝ”ํ”Œ๋ผ ํ•จ์ˆ˜๋ฅผ ์˜๋ฏธํ•œ๋‹ค. TDS๋Š” Dโ‰ฅd์ด๊ณ  Sโ‰ฅs์ธ ๊ฒฝ์šฐ์˜ ๊ฒฐํ•ฉ์žฌํ˜„๊ธฐ๊ฐ„์ด๋ฉฐ E(L)์€ ํ‰๊ท  ๊ฐ€๋ญ„ ๋ฐœ์ƒ๊ฐ„๊ฒฉ์„ ๋‚˜ํƒ€๋‚ธ๋‹ค. ์ตœ๊ทผ ์ˆ˜๋ฌธ๋นˆ๋„ํ•ด์„์—์„œ๋Š” ๋‹ค์–‘ํ•œ ํ˜•ํƒœ๋ฅผ ํฌํ•จํ•˜๋ฉฐ ์‚ฐ์ •๊ณผ์ •์ด ๊ฐ„๋‹จํ•˜๊ณ  ์ˆ˜๋ฌธ๋ณ€์ˆ˜ ๊ฐ„์˜ ์ƒ๊ด€๊ด€๊ณ„๋ฅผ ์ž˜ ๋ฐ˜์˜ํ•˜๋Š” Archimedean ์ฝ”ํ”Œ๋ผ ํ•จ์ˆ˜๊ฐ€ ์ฃผ๋กœ ์ ์šฉ๋˜๊ณ  ์žˆ๋‹ค(Nelson, 1999; Zhang and Singh, 2006). ๋ณธ ์—ฐ๊ตฌ์—์„œ ์‚ฌ์šฉ๋œ ์„ธ ๊ฐ€์ง€ Archimedean ์ฝ”ํ”Œ๋ผ ํ•จ์ˆ˜๋Š” Table 1.๊ณผ ๊ฐ™๋‹ค.

์ฝ”ํ”Œ๋ผ ํ•จ์ˆ˜๋กœ ์‚ฐ์ •๋œ ์ด๋ณ€๋Ÿ‰ ๊ฒฐํ•ฉํ™•๋ฅ ๋ถ„ํฌ๋Š” 3์ฐจ์›์˜ ํ˜•ํƒœ๋ฅผ ๊ฐ€์ง€๊ณ  ์žˆ์œผ๋ฉฐ, ์ด๋Ÿฌํ•œ ๋ถ„ํฌํ˜•ํƒœ๋Š” ์‹ค๋ฌด์—์„œ์˜ ์ ์šฉ์„ ์–ด๋ ต๊ฒŒ ํ•˜๋Š” ์š”์ธ์œผ๋กœ ์ž‘์šฉํ•œ๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ ์กฐ๊ฑด๋ถ€ ๊ฒฐํ•ฉํ™•๋ฅ ๋ถ„ํฌ๋ฅผ ํ™œ์šฉํ•˜์—ฌ ํŠน์ • ์ง€์†๊ธฐ๊ฐ„ ๋˜๋Š” ์‹ฌ๋„์— ๋”ฐ๋ฅธ 2์ฐจ์› ๋ถ„ํฌํ˜•ํƒœ๋กœ ํ‘œํ˜„์ด ๊ฐ€๋Šฅํ•˜๋‹ค. ์˜ˆ๋ฅผ ๋“ค์–ด, ์ง€์†๊ธฐ๊ฐ„์— ๋Œ€ํ•œ ํ™•๋ฅ ๋ถ„ํฌ V=FD(d)์— ๋Œ€ํ•œ, U= FS(s)์˜ ์กฐ๊ฑด๋ถ€ ํ™•๋ฅ ๋ถ„ํฌ๋Š” Eqs. (5) and (6)์™€ ๊ฐ™์ด ์‚ฐ์ •ํ•  ์ˆ˜ ์žˆ๋‹ค.

Table 1. Equations of Archimedean Copula FamiliesTable_KSCE_37_01_23_T1.jpg

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3. ์—ฐ๊ตฌ์ง€์—ญ ๋ฐ ์ž๋ฃŒ

์šฐ๋ฆฌ๋‚˜๋ผ ๋Œ์˜ ์ด์ˆ˜์•ˆ์ „๋„ ํ‰๊ฐ€๊ธฐ์ค€์€ ๊ฑด์„ค์‹œ๊ธฐ์— ๋”ฐ๋ผ ๋ณด์žฅ๊ณต๊ธ‰๋Ÿ‰ ๋ฐ ์‹ ๋ขฐ๋„์™€ ๊ฐ™์ด ๊ฐ๊ฐ ๋‹ค๋ฅธ ๊ธฐ์ค€์ด ์ ์šฉ๋˜์–ด ์™”๋‹ค. ๋ณด์žฅ๊ณต๊ธ‰๋Ÿ‰์€ ์ตœ๋Œ€ํ•œ๋ฐœ๊ณผ ๊ฐ™์€ ๊ธฐ์ค€๊ฐˆ์ˆ˜๋…„์— ๋Œ€ํ•œ ์œ ์ž…๋Ÿ‰ ์ž๋ฃŒ๋ฅผ ์ด์šฉํ•˜์—ฌ ํŠน์ • ๊ฐˆ์ˆ˜ ๊ธฐ๊ฐ„ ๋™์•ˆ ๋ณด์žฅํ•  ์ˆ˜ ์žˆ๋Š” ์ตœ๋Œ€๊ณต๊ธ‰๋Ÿ‰์„ ์‚ฐ์ •ํ•˜๋Š” ๋ฐฉ๋ฒ•์ด๊ณ , ์‹ ๋ขฐ๋„ ๊ธฐ์ค€์€ ๊ณผ๊ฑฐ์ž๋ฃŒ๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ๋ชจ์˜ ์šด์˜์„ ์ˆ˜ํ–‰ํ•˜์—ฌ ๊ณ„ํš๊ธฐ๊ฐ„ ๋™์•ˆ ๋ช‡ ํšŒ์˜ ์šฉ์ˆ˜๋ถ€์กฑ์ด ๋ฐœ์ƒํ•˜๋Š”์ง€ ์‚ฐ์ •ํ•˜๋Š” ๋ฐฉ๋ฒ•์ด๋‹ค. ์ด ๋‘ ๋ฐฉ๋ฒ•์€ ์‹ค์ธก์ž๋ฃŒ๊ฐ€ ์ ์—ˆ๋˜ ๊ณผ๊ฑฐ์— ์‚ฌ์šฉํ•˜๊ธฐ์— ์œ ์šฉํ–ˆ์œผ๋‚˜, ๊ฐ ๋Œ๋งˆ๋‹ค ๊ฑด์„ค์‹œ๊ธฐ๊ฐ€ ๋‹ฌ๋ผ ๊ธฐ๋ก์—ฐํ•œ์ด ์ƒ์ดํ•˜๊ณ , ๊ธฐ์ค€๊ฐˆ์ˆ˜๋…„์ด ์ตœ๋Œ€๊ฐ€๋ญ„๋…„๊ณผ ์ผ์น˜ํ•˜์ง€ ์•Š๋Š” ์œ ์—ญ์ด ๋ฐœ์ƒํ•˜๊ธฐ ๋•Œ๋ฌธ์— ์ด์ˆ˜์•ˆ์ „๋„ ํ‰๊ฐ€์— ์žˆ์–ด ์ผ๊ด€๋œ ๊ธฐ์ค€์ด๋ผํ•˜๊ธฐ ์–ด๋ ต๋‹ค.

๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ๋Œ์˜ ์šฉ์ˆ˜๊ณต๊ธ‰๋Šฅ๋ ฅ์„ ํ‰๊ฐ€ํ•˜๊ธฐ ์œ„ํ•ด ์ด๋ณ€๋Ÿ‰ ๋นˆ๋„ํ•ด์„์œผ๋กœ ์‚ฐ์ •๋œ ์žฌํ˜„๊ธฐ๊ฐ„์„ ์‚ฌ์šฉํ•˜์˜€์œผ๋ฉฐ, ๊ณผ๊ฑฐ ๋ฐœ์ƒํ–ˆ๋˜ ๊ฐ€๋ญ„์‚ฌ์ƒ์€ ์‹ค์ธก ๋Œ ์œ ์ž…๋Ÿ‰ ์ž๋ฃŒ๋ฅผ ์ด์šฉํ•˜์—ฌ ๋ถ„์„๋˜์—ˆ๋‹ค. ์ด๋ฅผ ์œ„ํ•ด ์†Œ์–‘๊ฐ•๋Œ(1974~2015), ์ถฉ์ฃผ๋Œ(1986~2015), ์•ˆ๋™๋Œ(1977~2015), ๋Œ€์ฒญ๋Œ(1981~2015), ์„ฌ์ง„๊ฐ•๋Œ(1975~2015)์˜ ๊ธฐ๋ก์—ฐํ•œ์ด 30๋…„ ์ด์ƒ์ธ 5๊ฐœ ๋‹ค๋ชฉ์ ๋Œ์„ ์—ฐ๊ตฌ์ง€์—ญ์œผ๋กœ ์„ ์ •ํ•˜์˜€์œผ๋ฉฐ, ์—ฐ๊ตฌ์ง€์—ญ์˜ ์›”ํ‰๊ท  ์œ ์ž…๋Ÿ‰, ๋ฐฉ๋ฅ˜๋Ÿ‰ ๋ฐ ๊ณ„ํš์šฉ์ˆ˜๊ณต๊ธ‰๋Ÿ‰์€ Table 2์™€ ๊ฐ™๋‹ค.

Table 2. Average Characteristics of Dam Basin (106 m3) (K-water, 2015)Table_KSCE_37_01_23_T2.jpg

4. ์ ์šฉ ๋ฐ ๊ฒฐ๊ณผ

4.1 ๊ฐ€๋ญ„์‚ฌ์ƒ์˜ ์ •์˜

๊ฐ€๋ญ„์‚ฌ์ƒ์„ ์ •์˜ํ•˜๊ธฐ ์œ„ํ•œ ์ž„๊ณ„์ˆ˜์ค€์„ ์„ ์ •ํ•˜๊ธฐ ์œ„ํ•ด ๋Œ ์œ ์ž…๋Ÿ‰ ์ž๋ฃŒ๋ฅผ ์ด์šฉํ•˜์—ฌ ์ผ๋ณ„ ์œ ํ™ฉ๊ณก์„ ์„ ์ž‘์„ฑํ•˜์˜€๋‹ค. ์ž„๊ณ„์ˆ˜์ค€์€ 50-95 ๋ฐฑ๋ถ„์œ„์ˆ˜๊นŒ์ง€ ๋‹ค์–‘ํ•˜๊ฒŒ ์ ์šฉํ•  ์ˆ˜ ์žˆ์œผ๋ฉฐ, ์—ฌ๋Ÿฌ ์ž„๊ณ„์ˆ˜์ค€์„ ๋น„๊ตํ•˜๋Š” ์—ฐ๊ตฌ๊ฐ€ ์ˆ˜ํ–‰๋œ ๋ฐ” ์žˆ๋‹ค(Wu et al., 2008; van Huijgevoort et al., 2012; Beyene et al., 2014; Sung and Chung, 2014). ๊ทธ๋Ÿฌ๋‚˜ ํ•˜๋‚˜์˜ ๊ธฐ์ค€์ด ๊ฒฐ์ •๋˜์–ด ์ œ์‹œ๋œ ๋ฐ” ์—†์œผ๋ฉฐ, ์œ ์—ญ์˜ ํŠน์„ฑ์— ๋งž๊ฒŒ ์„ ํƒ๋˜๋Š” ๊ฒƒ์ด ์ผ๋ฐ˜์ ์ด๋‹ค. Fig. 1 ์€ ์ผ๋ณ„ ๋Œ ์œ ์ž…๋Ÿ‰๊ณผ ์ž„๊ณ„์ˆ˜์ค€์„ ํ•จ๊ป˜ ๋„์‹œํ•œ ๊ฒƒ์œผ๋กœ, ๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” Eq. (1)์— ๋”ฐ๋ผ ์œ ํ™ฉ๊ณก์„ ์„ ์ž‘์„ฑํ•˜๊ณ  60 ๋ฐฑ๋ถ„์œ„์ˆ˜๋ฅผ ๊ฐ€๋ญ„์— ๋Œ€ํ•œ ์ž„๊ณ„์ˆ˜์ค€์œผ๋กœ ์‚ฌ์šฉํ•˜์˜€๋‹ค. ์ž„๊ณ„์ˆ˜์ค€ ์ดํ•˜์˜ ์—ฐ์†๋œ ์œ ๋Ÿ‰๋“ค์ด ๊ฐ€๋ญ„์‚ฌ์ƒ์œผ๋กœ ์ •์˜๋œ๋‹ค. ๋”ฐ๋ผ์„œ ๊ฐ€๋ญ„ ์ง€์†๊ธฐ๊ฐ„(duration)์€ ๊ฐ€๋ญ„์ด ์ง€์†๋œ ์ผ์ˆ˜์ด๋ฉฐ, ๊ฐ€๋ญ„ ์‹ฌ๋„(severity)๋Š” ๊ฐ€๋ญ„ ์ง€์†๊ธฐ๊ฐ„ ๋™์•ˆ ๋ฐœ์ƒํ•œ ์ž„๊ณ„์ˆ˜์ค€๋ณด๋‹ค ๋ถ€์กฑํ•œ ์œ ๋Ÿ‰์˜ ํ•ฉ์œผ๋กœ ์ •์˜๋œ๋‹ค.

Fig. 1

Drought Definition Using Threshold Level Method

Figure_KSCE_37_01_23_F1.jpg

๋ณธ ์—ฐ๊ตฌ์—์„œ ๊ฐ€๋ญ„ ์‹ฌ๋„ ๋ฐ ์ง€์†๊ธฐ๊ฐ„์„ 7๊ฐœ์˜ ํ™•๋ฅ ๋ถ„ํฌํ•จ์ˆ˜(Gaussian, Exponential, Gamma, Gumbel, GEV, Weibull, Generalized Pareto)์— ๋Œ€ํ•˜์—ฌ Kolmogorov-Smirov ๊ฒ€์ •์„ ์ˆ˜ํ–‰ํ•˜์˜€๋‹ค. ๊ทธ ๊ฒฐ๊ณผ ์‹ฌ๋„ ๋ฐ ์ง€์†๊ธฐ๊ฐ„์€ ๊ฐ๊ฐ ์ง€์ˆ˜ ๋ถ„ํฌ์™€ ๊ฐ๋งˆ ๋ถ„ํฌ๋ฅผ ๊ฐ€์žฅ ์ž˜ ๋”ฐ๋ฅด๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ์ฃผ๋ณ€ํ™•๋ฅ ๋ถ„ํฌํ•จ์ˆ˜๋ฅผ ๊ฒฐ์ •ํ•œ ํ›„ ์ฝ”ํ”Œ๋ผ ํ•จ์ˆ˜๋ฅผ ํ†ตํ•ด ์ด๋ณ€๋Ÿ‰ ๊ฒฐํ•ฉํ™•๋ฅ ๋ถ„ํฌํ•จ์ˆ˜ ์‚ฐ์ •ํ•˜์˜€๋‹ค. Archimedean ์ฝ”ํ”Œ๋ผ ํ•จ์ˆ˜ ์ค‘ Clayton, Frank, Gumbel์„ ๋Œ€์ƒ์œผ๋กœ ์ตœ์šฐ๋„๋ฒ•์„ ์ ์šฉํ•˜์—ฌ ์ตœ์ ์˜ ํ•จ์ˆ˜๋ฅผ ์„ ์ •ํ•˜์˜€์œผ๋ฉฐ, ๊ทธ ๊ฒฐ๊ณผ๋Š” Table 3๊ณผ ๊ฐ™๋‹ค. ๊ฐ€๋ญ„ ์‹ฌ๋„๋Š” ๋Œ ์œ ์—ญ์˜ ํฌ๊ธฐ์™€ ํŠน์„ฑ์— ๋”ฐ๋ผ 7.5~ 95.8๋ฐฑ๋งŒ m3๊นŒ์ง€ ๋‹ค์–‘ํ•œ ๋ฒ”์œ„๋ฅผ ๊ฐ–์ง€๋งŒ ์ง€์†๊ธฐ๊ฐ„์€ ํฌ๊ฒŒ 1๋…„์„ ๋„˜์–ด์„œ์ง€ ์•Š๋Š” ๊ฒƒ์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค. 5๊ฐœ ๋Œ์˜ ํ‰๊ท  ์ง€์†๊ธฐ๊ฐ„์€ 3๊ฐœ์›”์ด๊ณ  ํ‰๊ท  ์‹ฌ๋„๋Š” 45๋ฐฑ๋งŒ m3์ด๋‹ค.

Table 3. Drought Characteristics and Optimal Probability Distribution FunctionsTable_KSCE_37_01_23_T3.jpg

4.2 ์šฐ๋ฆฌ๋‚˜๋ผ ๊ณ„์ ˆ๋ณ„ ๊ฐ€๋ญ„ ํŠน์„ฑ

๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ๋ด„(3, 4, 5์›”), ์—ฌ๋ฆ„(6, 7, 8์›”), ๊ฐ€์„(9, 10, 11์›”), ๊ฒจ์šธ(12, 1, 2์›”)๋กœ ๋‚˜๋ˆ„์–ด ๊ณ„์ ˆ๋ณ„ ๊ฐ€๋ญ„๋ฐœ์ƒ ํŠน์„ฑ์„ ๋ถ„์„ํ•˜์˜€์œผ๋ฉฐ, ๊ทธ ๊ฒฐ๊ณผ๋Š” Table 4์— ๋‚˜ํƒ€๋‚ธ ๊ฒƒ๊ณผ ๊ฐ™๋‹ค. ๊ฐ€๋ญ„ ๋ฐœ์ƒ ํšŸ์ˆ˜๋Š” ๊ณ„์ ˆ๋ณ„๋กœ ๋น„์Šทํ•˜๊ฒŒ ๋‚˜ํƒ€๋‚ฌ์ง€๋งŒ ๊ทธ ์ค‘ ๋ด„์— ๊ฐ€์žฅ ๋นˆ๋ฒˆํ•˜๊ฒŒ ๊ฐ€๋ญ„์ด ๋ฐœ์ƒํ•˜์˜€์œผ๋ฉฐ ๊ฐ€์žฅ ๊ฐ€๋ญ„ ๋ฐœ์ƒ ๋นˆ๋„๊ฐ€ ๋‚ฎ์€ ๊ณ„์ ˆ์€ ๊ฒจ์šธ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ ๋ด„์€ ๊ฐ€๋ญ„ ๋ฐœ์ƒ ๋นˆ๋„๊ฐ€ ๋†’์Œ์—๋„ ๋ถˆ๊ตฌํ•˜๊ณ  ์ง€์†๊ธฐ๊ฐ„์ด ํ‰๊ท ์˜ 0.67๋ฐฐ ์ •๋„๋กœ ์งง๊ณ  ์‹ฌ๋„๋Š” ํ‰๊ท ๊ณผ ์œ ์‚ฌํ•œ ์ •๋„๋กœ ๋‚˜ํƒ€๋‚ฌ์œผ๋ฉฐ, ๊ฒจ์šธ์€ ๊ฐ€๋ญ„ ์ง€์†๊ธฐ๊ฐ„๊ณผ ์‹ฌ๋„๊ฐ€ ๋ชจ๋‘ ํ‰๊ท ๋ณด๋‹ค 0.85๋ฐฐ์™€ 0.54๋ฐฐ์ด๋ฉฐ, ์žฌํ˜„๊ธฐ๊ฐ„๋„ ํ‰๊ท ์˜ 0.37๋ฐฐ๋กœ ๊ฐ€์žฅ ์œ„ํ—˜๋„๊ฐ€ ๋‚ฎ์€ ๊ฒƒ์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค.

Table 4. Seasonal Drought Characteristics of Dam BasinsTable_KSCE_37_01_23_T4.jpg

์ง€์†๊ธฐ๊ฐ„์ด ์œ ์—ญ ํ‰๊ท ๋ณด๋‹ค ๊ฐ€์žฅ ๋†’์€ ๊ณ„์ ˆ์€ ๊ฐ€์„์ด๋ฉฐ, ๊ธด ์ง€์†๊ธฐ๊ฐ„์— ๋น„ํ•ด ์‹ฌ๋„๋Š” ํ‰๊ท ์˜ 0.55๋ฐฐ ์ •๋„๋กœ ๋‚ฎ๊ฒŒ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ๊ฐ€๋ญ„ ์œ„ํ—˜๋„๋ฅผ ๋‚˜ํƒ€๋‚ด๋Š” ์žฌํ˜„๊ธฐ๊ฐ„์€ ํ‰๊ท ์˜ 0.65๋ฐฐ๋กœ ํฌ์ง€ ์•Š์€ ๊ฒƒ์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค. ์œ ์ž…๋Ÿ‰์ด ๋น„๊ต์  ํ’๋ถ€ํ•œ ์—ฌ๋ฆ„์ฒ ์— ๋ฐœ์ƒํ•˜๋Š” ๊ฐ€๋ญ„์˜ ์ง€์†๊ธฐ๊ฐ„๊ณผ ์‹ฌ๋„๋Š” ํ‰๊ท ๋ณด๋‹ค 1.3๋ฐฐ์™€ 1.9๋ฐฐ ๋†’์œผ๋ฉฐ ์žฌํ˜„๊ธฐ๊ฐ„์€ 2.3๋ฐฐ ๋†’์€ ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค. ์—ฌ๋ฆ„์˜ ๊ฐ€๋ญ„๋ฐœ์ƒ ํ™•๋ฅ ์€ ๋น„๊ต์  ๊ฑด์กฐํ•œ ๊ณ„์ ˆ์ธ ๋ด„, ๊ฐ€์„๋ณด๋‹ค ๋†’์ง€ ์•Š์œผ๋‚˜ ์žฅ๋งˆ ๋ฐ ํƒœํ’์œผ๋กœ ํ‰๊ท  ์œ ์ž…๋Ÿ‰์ด ํฌ๊ธฐ ๋•Œ๋ฌธ์— ํ‰๋…„๋ณด๋‹ค ๊ฐ•์ˆ˜๋Ÿ‰์ด ์กฐ๊ธˆ๋งŒ ์ ์–ด๋„ ํฐ ์‹ฌ๋„๋ฅผ ๋‚˜ํƒ€๋‚ด๊ธฐ ๋•Œ๋ฌธ์— ๋‹ค๋ฅธ ๊ณ„์ ˆ๋ณด๋‹ค ์œ„ํ—˜๋„๊ฐ€ ๋†’์€ ๊ฒƒ์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค.

4.3 ๊ณ„์ก€๋ณ„ ์šฉ์ˆ˜๋ถ€์กฑ๋Ÿ‰ ์‚ฐ์ •

๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ๋‹ค๋ชฉ์  ๋Œ์˜ ์ด์ˆ˜์•ˆ์ „๋„๋ฅผ ํ‰๊ฐ€ํ•˜๊ธฐ ์œ„ํ•ด ํŠน์ • ์žฌํ˜„๊ธฐ๊ฐ„์„ ๊ฐ–๋Š” ๊ฐ€๋ญ„์ด ๋ฐœ์ƒํ•œ ์ƒํ™ฉ์„ ๊ฐ€์ •ํ•˜์—ฌ ๊ณ„์ ˆ๋ณ„ ํ‰๊ท  ๋Œ ์œ ์ž…๋Ÿ‰์—์„œ ํ™•๋ฅ ๊ฐ€๋ญ„์‹ฌ๋„๋ฅผ ์ œ์™ธํ•˜๊ณ  ๊ณ„ํš์šฉ์ˆ˜๊ณต๊ธ‰๋Ÿ‰๋Œ€๋กœ ์šฉ์ˆ˜๊ณต๊ธ‰์„ ์ˆ˜ํ–‰ํ•  ๋•Œ ์–ด๋Š ์ •๋„์˜ ๋ฌผ ๋ถ€์กฑ์ด ๋ฐœ์ƒํ•˜๋Š”์ง€ ์‚ฐ์ •ํ•˜์˜€๋‹ค. Table 2์—์„œ ํ™•์ธํ•  ์ˆ˜ ์žˆ๋“ฏ์ด ๊ณ„ํš์šฉ์ˆ˜๊ณต๊ธ‰๋Ÿ‰์€ ์‹ค์ œ ๋Œ์˜ ์ƒํ™ฉ์— ๋”ฐ๋ผ ์ธ์œ„์ ์ธ ์กฐ์ •์ด ์žˆ๊ธฐ ๋•Œ๋ฌธ์— ์‹ค์ œ ๋ฐฉ๋ฅ˜๋Ÿ‰๊ณผ ์ฐจ์ด๊ฐ€ ์žˆ์œผ๋‚˜ ๋Œ ์œ ์—ญ์—์„œ ์š”๊ตฌ๋˜๋Š” ์ƒํ™œ, ๋†์—… ๋ฐ ๊ณต์—…์šฉ์ˆ˜์— ์˜ํ•ด ๊ฒฐ์ •๋œ ๊ฐ’์ด๋ฏ€๋กœ ์ด์ˆ˜์•ˆ์ „๋„๋ฅผ ํ‰๊ฐ€ํ•  ๋•Œ ๊ธฐ์ค€์ˆ˜์š”๋Ÿ‰์œผ๋กœ ์‚ฌ์šฉ๋˜๊ธฐ์— ์ ํ•ฉํ•˜๋‹ค๊ณ  ํŒ๋‹จํ•˜์˜€๋‹ค. ์•ž์„œ ๋ถ„์„๋œ ๊ฒฐ๊ณผ์™€ ๊ฐ™์ด ์šฐ๋ฆฌ๋‚˜๋ผ์˜ ํ‰๊ท  ๊ฐ€๋ญ„ ์ง€์†๊ธฐ๊ฐ„์€ ์•ฝ 3๊ฐœ์›”์ด๋ฉฐ, ๋”ฐ๋ผ์„œ 3๊ฐœ์›”์— ํ•ด๋‹นํ•˜๋Š” ๊ฐ ์žฌํ˜„๊ธฐ๊ฐ„์— ๋”ฐ๋ฅธ ๊ฐ€๋ญ„์‹ฌ๋„๋ฅผ ํ™•๋ฅ ๊ฐ€๋ญ„์‹ฌ๋„๋กœ์จ ์‚ฐ์ •ํ•˜์˜€๋‹ค(Fig. 2).

Fig. 2

Design Drought for 3-month Duration

Figure_KSCE_37_01_23_F2.jpg

๊ฐ ๋Œ ์œ ์—ญ์—์„œ ๊ณ„์ ˆ๋ณ„ ํ™•๋ฅ ๊ฐ€๋ญ„์‹ฌ๋„์— ๋”ฐ๋ฅธ ์šฉ์ˆ˜๋ถ€์กฑ๋Ÿ‰์€Table 5์— ๋‚˜ํƒ€๋‚ธ ๊ฒƒ๊ณผ ๊ฐ™๋‹ค. ์šฐ๋ฆฌ๋‚˜๋ผ์˜ ๊ธฐ์ƒํ•™์  ํŠน์„ฑ ์ƒ 7, 8, 9์›”์— ์žฅ๋งˆ์™€ ํƒœํ’์œผ๋กœ ์ธํ•ด ๊ฐ•์šฐ๋Ÿ‰์ด ์ง‘์ค‘๋˜์–ด ์žˆ๊ธฐ ๋•Œ๋ฌธ์— ๋Œ ์œ ์ž…๋Ÿ‰์ด ๊ฐ€์žฅ ๋งŽ์€ ๊ณ„์ ˆ์€ ์—ฌ๋ฆ„๊ณผ ๊ฐ€์„์ด๋‹ค. ์—ฌ๋ฆ„์—๋Š” 100๋…„ ๋นˆ๋„์˜ ๊ฐ•ํ•œ ๊ฐ€๋ญ„์ด ๋ฐœ์ƒํ•˜์—ฌ๋„ 3๊ฐœ์›” ์ง€์†๊ธฐ๊ฐ„์„ ๊ฐ–๋Š” ํ™•๋ฅ ๊ฐ€๋ญ„์‹ฌ๋„ ํ•˜์—์„œ๋Š” ์šฉ์ˆ˜๋ถ€์กฑ์„ ๋‚˜ํƒ€๋‚ด์ง€ ์•Š๋Š” ๊ฒƒ์„ ํ™•์ธํ•˜์˜€๋‹ค. ๊ฐ€์„์—๋„ ์•ˆ๋™๋Œ๊ณผ ์„ฌ์ง„๊ฐ•๋Œ์„ ์ œ์™ธํ•˜๊ณ  5~10๋…„ ๋นˆ๋„ ์ •๋„์˜ ๊ฐ€๋ญ„์—๋Š” ์•ˆ์ •์ ์ธ ์šฉ์ˆ˜๊ณต๊ธ‰์ด ๊ฐ€๋Šฅํ•  ๊ฒƒ์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค. ๋ฐ˜๋ฉด ๊ฐ•์ˆ˜๋Ÿ‰์ด ์ ์€ ๋ด„๊ณผ ๊ฒจ์šธ์—๋Š” 1๋…„ ๋นˆ๋„์˜ ์ƒ์‹œ๊ฐ€๋ญ„์—๋„ ์šฉ์ˆ˜๋ถ€์กฑ์ด ๋ฐœ์ƒํ•˜๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค.

Table 5. Water Shortage of Four Seasons under 3-month Duration Design Drought (106 m3)Table_KSCE_37_01_23_T5.jpg

Fig. 3์€ ์œ ์—ญ์˜ ๊ทœ๋ชจ๋ฅผ ๊ณ ๋ คํ•˜์—ฌ ๋Œ์˜ ๊ณ„์ ˆ๋ณ„ ์šฉ์ˆ˜๊ณต๊ธ‰๋Šฅ๋ ฅ์„ ๋น„๊ตํ•˜๊ธฐ ์œ„ํ•ด ํ‰๊ท  ์œ ์ž…๋Ÿ‰์— ๋น„ํ•ด ์–ด๋Š ์ •๋„์˜ ์šฉ์ˆ˜๋ถ€์กฑ๋Ÿ‰์ด ๋ฐœ์ƒํ•˜๋Š”์ง€ ๋น„์œจ๋กœ ๋‚˜ํƒ€๋‚ด์—ˆ๋‹ค. ๊ทธ ๊ฒฐ๊ณผ ๋ด„, ๊ฐ€์„์—๋Š” ์„ฌ์ง„๊ฐ•๋Œ, ์—ฌ๋ฆ„์—๋Š” ์•ˆ๋™๋Œ, ๊ฒจ์šธ์—๋Š” ์†Œ์–‘๊ฐ•๋Œ์˜ ์ด์ˆ˜์•ˆ์ „๋„๊ฐ€ ๊ฐ€์žฅ ๋‚ฎ์€ ๊ฒƒ์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค.

Fig. 3

Water Shortage of Four Seasons under 3-month Duration Design Drought

Figure_KSCE_37_01_23_F3.jpg

5. ๊ฒฐ ๋ก 

๋ณธ ์—ฐ๊ตฌ์—์„œ๋Š” ๋Œ ์œ ์ž…๋Ÿ‰ ์ž๋ฃŒ๋ฅผ ์ด์šฉํ•˜์—ฌ ๋Œ ์œ ์—ญ์—์„œ ๋ฐœ์ƒํ–ˆ๋˜ ๊ณผ๊ฑฐ ์ˆ˜๋ฌธํ•™์  ๊ฐ€๋ญ„์‚ฌ์ƒ์„ ์ •์˜ํ•˜๊ณ , ๊ณ„์ ˆ๋ณ„ ๊ฐ€๋ญ„ ํŠน์„ฑ์„ ๋ถ„์„ํ•˜์˜€๋‹ค. ๊ฐ€๋ญ„์˜ ์ฃผ์š” ํŠน์„ฑ ๋ณ€์ˆ˜์ธ ์‹ฌ๋„์™€ ์ง€์†๊ธฐ๊ฐ„์„ ์‚ฌ์šฉํ•˜์—ฌ ์ฝ”ํ”Œ๋ผ ํ•จ์ˆ˜๋ฅผ ์ ์šฉํ•œ ์ด๋ณ€๋Ÿ‰ ๊ฐ€๋ญ„๋นˆ๋„ํ•ด์„์„ ์ˆ˜ํ–‰ํ•˜์˜€์œผ๋ฉฐ, ์ด๋ฅผ ํ†ตํ•ด ํ™•๋ฅ ๋ก ์ ์œผ๋กœ ์žฌํ˜„ํŠน์„ฑ์„ ํ‰๊ฐ€ํ•˜์˜€๋‹ค. ๊ทธ ํ›„ ์‚ฐ์ •๋œ ๊ฒฐํ•ฉํ™•๋ฅ ๋ถ„ํฌํ•จ์ˆ˜์˜ ์กฐ๊ฑด๋ถ€ ํ•จ์ˆ˜๋ฅผ ์ด์šฉํ•˜์—ฌ 3๊ฐœ์›” ์ง€์†๊ธฐ๊ฐ„์— ๋Œ€ํ•œ ํ™•๋ฅ ๊ฐ€๋ญ„์‹ฌ๋„๋ฅผ ์‚ฐ์ •ํ•˜์˜€์œผ๋ฉฐ, ์ตœ์ข…์ ์œผ๋กœ ๋‹ค๋ชฉ์ ๋Œ์ด ํŠน์ • ๊ฐ€๋ญ„ ์กฐ๊ฑด์—์„œ ์•ˆ์ •์ ์ธ ์šฉ์ˆ˜๊ณต๊ธ‰์ด ๊ฐ€๋Šฅํ•œ์ง€ ํ‰๊ฐ€ํ•˜์˜€๋‹ค.

์šฐ๋ฆฌ๋‚˜๋ผ์˜ ์ˆ˜๋ฌธํ•™์  ํŠน์„ฑ์— ์˜ํ•ด ์—ฌ๋ฆ„์—๋Š” 3๊ฐœ์›” ์ง€์†๊ธฐ๊ฐ„์˜ ๊ฐ€๋ญ„์ด ๋ฐœ์ƒํ•ด๋„ ์ž์ฒด ์œ ์ž…๋Ÿ‰๋งŒ์œผ๋กœ ์•ˆ์ •์ ์ธ ์šฉ์ˆ˜๊ณต๊ธ‰์ด ๊ฐ€๋Šฅํ•˜๋ฉฐ, ๊ฐ€์„์—๋Š” ์•ˆ๋™๋Œ๊ณผ ์„ฌ์ง„๊ฐ•๋Œ์„ ์ œ์™ธํ•˜๊ณ  5~10๋…„ ๋นˆ๋„์˜ ๊ฐ€๋ญ„์—๋„ ๊ฒฌ๋”œ ์ˆ˜ ์žˆ๋Š” ๊ฒƒ์œผ๋กœ ๋ถ„์„๋˜์—ˆ๋‹ค. ๊ทธ๋Ÿฌ๋‚˜ ๊ฐ•์ˆ˜๋Ÿ‰์ด ์ ์€ ๋ด„๊ณผ ๊ฒจ์šธ์—๋Š” 1๋…„ ๋นˆ๋„์˜ ์ž‘์€ ๊ฐ€๋ญ„์—๋„ ์šฉ์ˆ˜๋ถ€์กฑ์ด ๋ฐœ์ƒํ•˜๋Š” ๊ฒƒ์œผ๋กœ ๋‚˜ํƒ€๋‚ฌ๋‹ค.

๋‹ค๋ชฉ์ ๋Œ์€ ์ƒํ™œยท๊ณต์—…ยท๋†์—…์šฉ์ˆ˜ ์™ธ์—๋„ ๋ฐœ์ „์šฉ์ˆ˜ ๋ฐ ์ƒํƒœํ™˜๊ฒฝ ์œ ์ง€๋ฅผ ์œ„ํ•œ ํ•˜์ฒœ์œ ์ง€์šฉ์ˆ˜ ๋“ฑ ๋‹ค์–‘ํ•œ ๋ชฉ์ ์˜ ์šฉ์ˆ˜๋ฅผ ๊ณต๊ธ‰ํ•˜๋ฏ€๋กœ ๊ณ„ํš์šฉ์ˆ˜๊ณต๊ธ‰๋Ÿ‰์„ ์ถฉ์กฑ์‹œํ‚ค์ง€ ๋ชปํ•  ๋•Œ ํฐ ์‚ฌํšŒ๊ฒฝ์ œ์  ํ”ผํ•ด๋ฅผ ์•ผ๊ธฐํ•  ์ˆ˜ ์žˆ๋‹ค. ์‹ค์ œ๋กœ 2014~2015๋…„ ๋ฐœ์ƒํ–ˆ๋˜ ๊ทน์‹ฌํ•œ ๊ฐ€๋ญ„์œผ๋กœ ์ธํ•ด ์†Œ์–‘๊ฐ•๋Œ๊ณผ ๋ณด๋ น๋Œ์€ ๊ธฐ๋ก์ ์ธ ์ €์ˆ˜์œ„๋ฅผ ๊ธฐ๋กํ•˜๋ฉฐ ํฐ ์œ„๊ธฐ์ƒํ™ฉ์„ ๊ฒช์€ ๋ฐ” ์žˆ๋‹ค. ๋”ฐ๋ผ์„œ ๋Œ์˜ ์šฉ์ˆ˜๊ณต๊ธ‰ํ‰๊ฐ€๋Š” ๊ฐ€๋ญ„์œผ๋กœ ์ธํ•œ ํ”ผํ•ด๋ฅผ ์ตœ์†Œํ™”ํ•  ์ˆ˜ ์žˆ๋Š” ๋Œ€์ฑ… ๋งˆ๋ จ๊ณผ ํ•จ๊ป˜ ์ˆ˜์ž์› ์‹œ์Šคํ…œ์˜ ์šด์˜ ๋˜๋Š” ์„ค๊ณ„์ง€์นจ์œผ๋กœ ํ™œ์šฉ๋  ์ˆ˜ ์žˆ๋‹ค.

Acknowledgements

๋ณธ ์—ฐ๊ตฌ๋Š” ๊ตญํ† ๊ตํ†ต๋ถ€ ๋ฌผ๊ด€๋ฆฌ์‚ฌ์—…์˜ ์—ฐ๊ตฌ๋น„์ง€์›(14AWMP- B082564-01)์— ์˜ํ•ด ์ˆ˜ํ–‰๋˜์—ˆ์œผ๋ฉฐ, ์ด์— ๊ฐ์‚ฌ๋“œ๋ฆฝ๋‹ˆ๋‹ค.

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