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Çѱ¹¼öÀÚ¿øÇÐȸ / v.33, no.5, 2000³â, pp.519-526
¼­¿ïÁöÁ¡ ¿¬°­¼ö·® ÀÚ·á¿¡ ³ªÅ¸³­ Àå±â °ÇÁÖ±âÀÇ ÀçÇö °¡´É¼º¿¡ °üÇÑ °íÂû
( An Investigation of the Recurrence Possibility of Long Dry Periods shown in the Annual Rainfall Data at Seoul )
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This study is to investigate the recurrence possibility of consecutive dry years such as the long dry period around 1900 in the annual rainfall data at Seoul station. The truncation levels, as the criterion for the dry years, are decided such as to make the occurrence of dry years follow the Poissonian distribution, which assures independent occurrence of dry years. For the truncation level of mean-0.5stdv, the occurrence of dry years is found to satisfy the Poissonian distribution weakly with 99% significance level, but for those of mean-0.75stdv and mean-stdv with 95% significance level. For these truncation levels, the long dry period around 1900 is divided into several short consecutive dry years. The Poisson process has then been applied to derive the occurrence probability of consecutive dry years. For the truncation level of mean-0.75stdv or below, the Poisson process was found to reproduce similar occurrence probabilities to the observed. Especially for the lowest truncation level used in the study (mean-stdv), we could see that the occurrence probability of consecutive dry years estimated for the data collected before the long dry period around 1900 was higher that those for the data collected after the long dry period, thus, it could be concluded that the possibility of long dry periods is decreasing recently.cently.
 
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°ú¿ìÇØ;¹ß»ýÈ®·ü;Æ÷¾Æ¼Û ºÐÆ÷;Æ÷¾Æ¼Û °úÁ¤;dry year;occurrence probability;Poisson distribution;Poisson process;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.33, no.5, 2000³â, pp.519-526
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011920729853)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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