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Çѱ¹¼öÀÚ¿øÇÐȸ / v.17, no.4, 1984³â, pp.281-291
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¼¶Áø° ¿ùÀ¯Ãâ·®ÀÇ Ãß°èÇÐÀû ¸ðÇü
( Stochastic Modelling of Monthly flows for Somjin river ) |
| ÀÌÁ¾³²;ÀÌÈ«±Ù; °æÈñ´ëÇб³ °ø°ú´ëÇб³¼ö;¼¿ï´ëÇб³ º¸°Ç´ëÇпø;
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| Çѱ¹ÇÏõÀ¯¿ªÀÇ °¿ì·®°üÃøÀÚ·á´Â dzºÎÇϳª ÇÏõÀ¯·®ÃøÁ¤ÀÚ·á°¡ ¸¹°í ¼¶Áø° À¯¿ª³»ÀÇ ¾Ð·Ï°ú ¼ÛÁ¤ÀÇ À¯·®°üÃø±â·ÏÀÌ ºñ±³ÀûÀå±â°£¿¡ °ÍÀÌ ÀÖ°í, À¯¼ÓÃøÁ¤À» ¸¹ÀÌ Çϰí ÀÖÀ¸¹Ç·Î º»À¯¿ªÀڷḦ °¡Áö°í ¿ùÀ¯Ãâ·®°è¿ÀÇ ¸ðÇü½ÄÀ» À¯µµÇÏ¿´´Ù. º»¸ðÇü½ÄÀº ¿ù°¿ì·®±â·ÏÀ¸·Î¼ ¿ùÀ¯Ãâ·® »êÃâ½ÄÀ» Box & JenkinsÀÇ ´ëüÇÔ¼ö¸ðÇü½Ä¿¡´Ù ARIMAÀÇ ÀÜÂ÷¸ðÇü½ÄÀ» °¡ÇÏ¿© À¯µµÇÑ °ÍÀÌ´Ù. ¶Ç ±â °¿ì·®°ú À¯Ãâ·® ÀÚ·á°£¿¡´Â ÀÜÂ÷½Ã°è¿ÀÌ Á¤»ó°øºÐ»êÀ» °®´Â´Ù´Â °¡Á¤ÇÏ¿¡ ¸ðÇü½ÄÀ» ÀÛ¼ºÇÏ¿´´Ù. ÀÚ±â»ó°ü ÇÔ¼öÀÇ Æ¯¼ºÀ¸·ÎºÎÅÍ ARIMA¸ðÇüÀ» À¯µµÇÔ¿¡µµ ¸ÕÀú °è»ê½ÄÀ¸·Î °¢º¯¼ö¸¦ »êÃâÇϰí, ÀÌ º¯¼ö¸¦ ´Ù¼ÒÁ¶Á¤¹Ýº¹½ÃÄÑ °¡Àå Á¤È®ÇÑ À¶Å뼺ÀÖ´Â Box & Jenkins ¹æ½ÄÀÇ ¸ðÇü½ÄÀ» ÀÛ¼ºÇÏ¿´´Ù. ¼¶Áø°¿¡¼ °¡Àå ÀûÁ¤¸ðÇü½ÄÀ» ´ÙÀ½°ú °°Àº ÀϹݽÄÀ¸·Î ÁÖ¾îÁ³´Ù. ¿©±â¼ $Y_t=($omega$o-$omega$_1B) C_iX_t+$varepsilon$t$ $Y_t$ ¿ùÀ¯Ãâ·®, $X_t$: ¿ù °¿ì·®, $C_i$: ¿ùÀ¯Ãâ·ü, $$omega$o-$omega$_1$ : ´ëüº¯¼ö $$varepsilon$_t$ : ÀÜÂ÷(ÀÓÀÇ¿ÀÂ÷¼ººÐ) ¼¶Áø°¼öÀ§°üÃø¼ÒÀÇ ±â ¿ùÀ¯Ãâ·® ±â·ÏÀÚ·á·Î¼ ¿ùÀ¯Ãâ·®°Ô¿ÀÇ ¸¸Á·ÇÒ¸¸ÇÑ ¸ðÇüÀ» ºñ±³°ËÅä ¿¬±¸ÀÛ¼ºÇÏ¿´´Ù. |
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| In our Koreans river basins there are many of monthly rainfall data, but unfortrnately streamflow data needed are rare. Analysing monthly rainfall data of Somjin river basin, the stochastic theory model for calculation of monthly streamflow series of that region is determined. The model is composed of Box & Jenkins stansfer function plus ARIMA residual models. This linear stochastic differenced time series equation models can adapt themselves to the structure and variety of rainfall, streamflow data on the assumption of the stationary covarience. The fiexibility of Box-Jenkins method consists mainly in the iterative technique of building an AIRMA model from observations and by the use of autocorrelation functions. The best models for Somjin river basin belong to the general calss: $Y_t=($omega$o-$omega$_1B) C_iX_t+$varepsilon$t$ $Y_t$ monthly streamflow, $X_t$ : monthly rainfall, $C_i$ :monthly run-off, $$omega$o-$omega$_1$ : transfer parameter, $$varepsilon$_t$ : residual The streamflow series resulted from the proposed model is satisfactory comparing with the exsting streamflow data of Somjin gauging station site. |
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.17, no.4, 1984³â, pp.281-291
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO198411920091097)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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