GPR 탐사를 통해 본 경주 첨성대 기초 및 주변의 유구 분석 = GPR Analysis on Underground Features and Foundation Structure of Cheomseongdae, Gyeongju

다국어 초록 (Multilingual Abstract)

Cheomseongdae in Gyeongju, known as an astronomical observatory, is a cultural monument with greathistorical, academic, and artistic value, as its unique shape is preserved well in its original form. The outer structure,ground stability, and seismic reliability of Cheomseongdae have been assessed by numerous researchers throughvarious scientific methods, but research on the underground structure has been insufficient.
This paper contains detailed models of the underground structure of Cheomseongdae interpreted in 2D and3D images based on the data acquired through GPR surveys conducted of features in and around the base ofCheomseongdae.
As a result, the existence of twelve small features arranged in a circle, although only about half of them remain,was confirmed at a depth of 0.4 – 0.6m. Furthermore, a structure three bays long (north-south direction) andfour bays wide (east-west direction) was detected beneath Cheomseongdae at the depth of 0.7 – 1.0m. Otherthan 2 layers of foundations as is known, a square structure with the dimensions of 7m x 7m is situated at a depthof 0.6m, directly under Cheomseongdae, and what is reading that is expected to be the foundation structure ofCheomseongdae was detected and confirmed. This foundation structure is circular with a diameter in the east-westdirection of 11m and in the north-south direction of 12m.
The northern, western, and eastern edges of this foundation structure are about 1m away from the foundationof Cheomseongdae, whereas the the south side extends to about 5m wide.

참고문헌 (Reference)

1 한국물리탐사학회, 2004

2 이문규, "첨성대를 어떻게 볼 것인가 - 첨성대 해석의 역사와 신라시대의 천문관" 한국과학사학회 26 (26): 3-28, 2004

3 서금석, "천문대로서의 첨성대 이설(異說)에 대한 재론(再論)" 한국고대사학회 (86) : 149-194, 2017

4 한국과학기술원, "제4차 첨성대 대토론회"

5 국립문화재연구소, "석조문화재 안전관리 방안 연구보고서 - 첨성대를 중심으로" 2011

6 손호웅, "석조구조물의 효율적 유지 관리를 위한 형상역공학적, 지반공학적 및 구조동역학적 특성 연구 –첨성대를 중심으로-"

7 경주시, "경주 첨성대 정밀구조 안전진단 용역 보고서" 2014

8 국립문화재연구소, "경주 첨성대 자동계측시스템 구축 완료보고서" 2017

9 국립문화재연구소, "경주 첨성대 실측 훼손도 평가 조사보고서" 2009

10 Park, "Noninvasive geotechnical site investigation for stability of Cheomseongdae" 13 : 2012

11 Goodman, D., "GPR remote sensing in archaeology" Spring 2013