• Proceedings of the KSEEG Conference
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• 2007.04a
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• pp.212-214
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• 2007

• Journal of Biosystems Engineering
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• v.17 no.2
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• pp.204-207
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• 1992

고구려, 백제, 신라의 삼국시대(三國時代) 천년 동안에 삼국사기(三國史記)에 나타난 농업재해(農業災害)에 관한 기록을 본바 한해(旱害)와 수해(水害)에 대한 기록이 제일 많고, 한해(旱害)에 대한 기록이 수해(水害)에 대한 기록이 수해(水害)에 대한 기록보다 두드러지게 많았다. 한해(旱害)에 대한 기록은 고구려 시대에 11회(回), 백제시대에 20회(回), 신라시대는 연대(年代)도 길어서 통일(統一)신라 이전에 22회(回) 그리고 통일신라 이후에 23회(回) 등 100회(回)에 가까운 한해(旱害)에 대한 기록을 볼 수 있다. 수해(水害)에 대한 기록은 한해(早害)에 대한 기록보다 적으나 고구려 시대에 5회(回), 백제시대에 3회(回), 그리고 신라시대에는 15회(回)의 수해(水害)(대수(大水))에 대한 기록이 보인다. 한해(早害)나 수해(水害)로 인하여 흉년(凶年)을 당했을 때, 특히 한해(旱害)에 대한 재해(災害)를 입었을 때에는 국가적(國家的)인 대책(對策)을 세워 기아민(飢餓民)의 구호(救護)에 힘을 기울였다는 기록은 얼마든지 있다. 여기에는 기우제(祈雨祭)를 지내여 민심(民心)을 수습하고 국가(國家)에서 비축(備蓄)하고 있었던 양곡(糧穀)으로 구호(救護)하였고 그 시대(時代)가 이천 년 전인 고구려, 백제, 신라의 건국 초기부터 라는 것을 볼 때 이들 구호(救護) 대책(對策)의 시행(施行)이 이천 년 전(前)으로 거슬러 올라간다는 것을 강조하고자 한다.

• Korean Architects
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• no.7 s.243
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• pp.42-47
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• 1989

• Korean Architects
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• no.3 s.240
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• pp.72-79
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• 1989

• Korean Architects
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• no.2 s.239
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• pp.59-61
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• 1989

• Korean Architects
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• no.4 s.241
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• pp.72-77
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• 1989

• Korean Architects
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• no.6 s.242
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• pp.41-47
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• 1989

• Korean Architects
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• no.8 s.244
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• pp.32-35
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• 1989

• Korean Journal of Heritage: History & Science
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• v.40
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• pp.357-386
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• 2007

At present, thirteen Buddhist bells of Unified Silla are known to the world: Six in Korea, five in Japan and two other bells, and three out of them are impossible to make out its original form. Therefore, we divided the form of Unified Silla Buddhist bells based on the ten other bells, and we tried out to prove the manufacturing technology by the comparison of the research material of Uncheon-dong bell and existing research materials of other bells, in other to find their linkage based on the alloy elemental composition. We divided Unified Silla Buddhist bell into two types: Type I has symmetric apsaras and regular patterns on its face and it was made in early Silla period; type II has asymmetric apsaras and irregular pattern arrangement and made in late Silla period. In particular, Uncheon-dong Buddhist bells is very similar to Komyoji[光明寺] temple bell from ninth century in Japan. It is peculiar that the apsaras on Uncheon-dong bell play vertical music instruments that are never seen in Unified Silla Buddhist bell. Most of Unified Silla Buddhist bell are compounded with Cu-Sn or Cu-Sn-Pb system. From eighth and ninth century, bells were cast with even composition of copper, tin and lead, and the bronze alloy ratio was similar to the record in Gogonggi[考工記], Jurye[周禮], a book from ancient China. Particularly, Uncheon-dong bell is in a rare case of Cu-Sn-Pb-As system. As had been rarely used in Unified Silla Buddhist bells, so we presented the relative research materials. As has the same nature as Pb. Because As easily volatilize at high temperature, it is hard to use. But it has its merit of solidity and durability. Pb enhances fluidity and thereby expresses the patterns more distinct; As makes the bell stronger. The result of lead isotope ratio could not exactly reveal a concrete producing center. However, over the analysis of our samples, hereby we suggest Uncheon-dong bell was made of materials from just one ore deposit.

• Journal of the Korean association of regional geographers
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• v.19 no.4
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• pp.580-599
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• 2013

After the unification of Three Kingdoms, Silla Dynasty had been on the prosperity with continuous population growth during approximately 120 years. However, Unified Silla Dynasty experienced 11 times of famine and bad year by frequent droughts during 50 years since the late 8th century, and these caused to political, economic and social changes. It is evident that Silla Dynasty slowly declined by the droughts and famines, although ancient records described as still on glory days. Since then, national power of Unified Silla Dynasty was abruptly weakened by migration of residents, and 9 times of rebellion or revolt occurred during 50 years in the late 9th century. As a result, political and social agitations reached the maximum. These led to the collapse of the Unified Silla Dynasty, and King Gyeongsoon handed over the dynasty to King Wanggeon, a founder of Goryeo Dynasty. These resulted from the 500-year-cycle droughts and human activities that seriously devastated the vegetations by using trees as an energy source for hundreds of thousands people during several centuries. The devastation of vegetation destroyed farm lands and led to large changes in river and groundwater systems, and eventually, increased damages by droughts.