『각사등록』에 의한 조선시대 경상도지역 측우기 강우량자료 복원 및 분석
Restoration and Analysis of Chugugi Rainfall Data in『 Gaksadeungnok』 for the Gyeongsang-do during the Joseon Dynasty
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초록
The Chugugi and Wootaek data of Gyeongsang-do (Dagu, Jinju, Goseong) wererestored from 『Gaksadeungnok』, the governmental documents reported by the local governmentto the central during the Joseon Dynasty, and analyzed. The duration of the restored datarepresents 6 years for Daegu (1863, 1872, 1890, 1897, 1898, and 1902), 3 years for Jinju(1897, 1898, and 1900), and 2 years for Goseong (1871 and 1873). Total number of therestored data was 134, including 83 in Daegu, 25 in Jinju, and 26 in Goseong with the periodranging from March to September. The summer data from June to August accounts for approximately50% (73 data), while the April data also shows relatively high number of 22, followedby September and March. Most data was collected from March to October, while this timewinter data was not found even in October. The rainfall patterns using Chugugi data wereinvestigated. First, the number of days with rainfall by annual mean showed 41 days in Daegu,39 in Jinju, 33 in Goseong, respectively. In terms of the time series distribution of daily rainfall,the ratio between the number of occurrences with over 40 mm of heavy rainfall and thenumber of rainy days showed 14 times (8%) in Daegu, 24 (39%) in Jinju, and 4 (6%) inGoseong, respectively. The maximum daily rainfall during the period was recorded with 80mmin Jinju on August 24, 1900. The result of analyzing monthly amount of rainfall clearly indicatedmore precipitation in summer (June, July and August) with the relatively high records of284 mm and 422 mm in April, 1872 and July, 1902, respectively, in Daegu, while Jinjurecorded the highest value of 506 mm in June, 1898. When comparing the data with thoseobserved by Chugugi in Seoul during the same period from『 Seungjeongwonilgi』, the monthlyrainfall patterns in Daegu and Seoul were quite similar except for the year of 1890 and 1897 inwhich many data were missing. In particular, in June 1898 the rainfall amount of Jinjurecorded as much as 506 mm, almost 4 times of that of Seoul (134 mm). Based on this, it ispossible to presume that there was a large amount of the precipitation in the southern regionduring 1898. According to the calculated result of Wootaek data based on Chugugi observations,the unit of 1 ‘Ri’ and 1 ‘Seo’ in Daegu can be interpreted into 18.6 mm and 7.8 mm. When taking into consideration with the previous result found in Gyeonggi-do (Cho et al., 2013), 1 ‘Ri’ and 1 ‘Seo’ may be close to 20.5 mm and 8.1 mm, however, more future investigations and studies will be essential to verify the exact values.
Abstract
The Chugugi and Wootaek data of Gyeongsang-do (Dagu, Jinju, Goseong) wererestored from 『Gaksadeungnok』, the governmental documents reported by the local governmentto the central during the Joseon Dynasty, and analyzed. The duration of the restored datarepresents 6 years for Daegu (1863, 1872, 1890, 1897, 1898, and 1902), 3 years for Jinju(1897, 1898, and 1900), and 2 years for Goseong (1871 and 1873). Total number of therestored data was 134, including 83 in Daegu, 25 in Jinju, and 26 in Goseong with the periodranging from March to September. The summer data from June to August accounts for approximately50% (73 data), while the April data also shows relatively high number of 22, followedby September and March. Most data was collected from March to October, while this timewinter data was not found even in October. The rainfall patterns using Chugugi data wereinvestigated. First, the number of days with rainfall by annual mean showed 41 days in Daegu,39 in Jinju, 33 in Goseong, respectively. In terms of the time series distribution of daily rainfall,the ratio between the number of occurrences with over 40 mm of heavy rainfall and thenumber of rainy days showed 14 times (8%) in Daegu, 24 (39%) in Jinju, and 4 (6%) inGoseong, respectively. The maximum daily rainfall during the period was recorded with 80mmin Jinju on August 24, 1900. The result of analyzing monthly amount of rainfall clearly indicatedmore precipitation in summer (June, July and August) with the relatively high records of284 mm and 422 mm in April, 1872 and July, 1902, respectively, in Daegu, while Jinjurecorded the highest value of 506 mm in June, 1898. When comparing the data with thoseobserved by Chugugi in Seoul during the same period from『 Seungjeongwonilgi』, the monthlyrainfall patterns in Daegu and Seoul were quite similar except for the year of 1890 and 1897 inwhich many data were missing. In particular, in June 1898 the rainfall amount of Jinjurecorded as much as 506 mm, almost 4 times of that of Seoul (134 mm). Based on this, it ispossible to presume that there was a large amount of the precipitation in the southern regionduring 1898. According to the calculated result of Wootaek data based on Chugugi observations,the unit of 1 ‘Ri’ and 1 ‘Seo’ in Daegu can be interpreted into 18.6 mm and 7.8 mm. When taking into consideration with the previous result found in Gyeonggi-do (Cho et al., 2013), 1 ‘Ri’ and 1 ‘Seo’ may be close to 20.5 mm and 8.1 mm, however, more future investigations and studies will be essential to verify the exact values.
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