전기,전자탐사에 의한 경주남부(입실지역)의 울산단층 심부구조

• 발행기관: 대한자원환경지질학회
• 저자명: 손호웅 윤혜수 오진용
• 간행물 정보: 『자원환경지질』32권 2호, 161~167쪽, 전체 7쪽
• 주제분류: 자연과학 > 지질학
• 파일형태: PDF
• 발행일자: 1999.04.30

영문 초록

Electric and electromagnetic surveys were conducted to investigate the deep structure of the Ulsan fault in Ipsil area, south of Kyeongju. On this study, especially high-frequency magnetotelluric method of electromagnetic survey in the frequency range of 10~100,000 Hz was mainly employed to study the deep subsurface configuration. High-frequency MT survey was performed at 70 points of spacing 30~50 m, making 3.8 km survey line. As a survey result, a 2-km-depth 2-D cross-section was achieved. It shows vertical and horizontal subsurface variations of resistivity values. Near-surface layer having low resistivity value becomes thicker eastward up to 800m. There is a steep low resistivity zone in the west side of survey line, and there exists two low resistivity zones dipping west in the east side of survey line. Two low resistivity zones are interpreted to be related to major movement pattern of the Ulsan fault. This suggests that major fault lines are developed on both peripheral sides of the broad fault zone.

키워드

전기탐사 전자탐사 경주 입실지역 울산단층 심부구조 EM탐사 쌍극자배열 비저항탐사 MT측선 말방리 화강암