초록

- 강릉과 삼척 간 해역에 대한 지질 및 지구물리 분야 선상조사 실시
- 북위 37도~38도, 동경 129도~131도의 약 23,000 $km^2$ 해역
- 1:250,000축척 광역 해저지질 주제도 제20집 발간
- 절판본 해저지질도 디지털 DB화 및 재발간
- 해저지질도 대외 서비스 및 지원
- 사업 홍보

Abstract ▼

The 'Marine Geotogical and Geophysical Mapping of the Korean Seas' is a government program with a goal to publish regional scale (1:250,000) thematic maps of Korean and its adjacent seas. The program aims to develop a better understanding of ohgin, character, evolution and potential economic value o

The 'Marine Geotogical and Geophysical Mapping of the Korean Seas' is a government program with a goal to publish regional scale (1:250,000) thematic maps of Korean and its adjacent seas. The program aims to develop a better understanding of ohgin, character, evolution and potential economic value of Korean seafloor environments with respect to geologic and geophysical points of views. The program was launched in 1975 and has been conducted more than thirty years since 1980. Up to now ca. 92.7% of the target area (ca. 300,000 $km^2$) has been surveyed and 87% of total planned maps were published though the quality of survey data having changed depending on research environment.
This report is a final summary of the three-year (2007 to 2009) Project the main object of which is to publish a 1:250,000-scale map oft he offshore area between Kangneung-Samcheock cities and the Ulleung Island in the East Sea. Geographically, the area is located in the rectagular zone within $37^{\circ}30'\sim38^{\circ}00'N$ in latitude and $130^{\circ}00'\sim131^{\circ}00'E$ in longitude. The areal extent reaches up to approximately 23,000 $km^2$. This year the survey was conducted in the northwestern part of the area for fifteen days from 15th, Sep. to 29th, Sep.
2,750 line-km records of single-beam and multi-beam echo-sounders, 3.5 kHz chirp acoustic profiler, digital multi-channel air-gun seismic system, gravimeter and magnetometer were achieved during the last three years. Based on onboard interpretation of the chirp acoustic profiles 42 cored samples were also recovered. The survey vessel was the R/V Tamhae II of Korea histitute of Geoscience and Mineral Resources and the ship's position was controlled and logged with TRINAV navigation system.
Collating the acquired geophysical data and cored samples laboratory analyses were performed and five resultant thematic maps were made and published for seafloor bathymetry, geology, total thickness of sedimentary strata, magnetic and gravity anomalies as the 'Marine Geology Map of the Korean Seas, Series XIX (Kangneung-Samcheok Area)'.
This report is produced through the research fund of the Ministry of Knowledge Economy (MKE) of Korea.

목차 Contents

• 제 1 장 서론 ...16
• 제 2 장 국내외 기술개발 현황 ...18
• 제 1 절 국내 기술개발 현황 ...18
• 제 2 절 해외 기술개발 현황 ...22
• 제 3 장 연구개발 수행내용 및 결과 ...26
• 제 1 절 연구지역 개괄 ...26
• 제 2 절 연구 방법 ...30
• 1. 선상자료 취득 ...30
• 2. 자료처리 및 분석 ...45
• 제 3 절 연구 결과 ...56
• 1. 수심 및 해저지형 ...56
• 2. 천부지층 퇴적상 및 물성 특성 ...57
• 3. 심부퇴적층 탄성파 층서 및 층후 ...77
• 4. 중력 특성 ...78
• 5. 자력 특성 ...78
• 제 4 절 결론 ...81
• 제 4 장 연구개발 목표 달성도 및 결과의 활용도 ...83
• 참고문헌 ...85
• List of Figures
• Fig. 1.1. Survey areas for marine geology mapping program as of 2009 ...17
• Fig. 2.1. Survey tracks around the Korean peninsular before 1983(Chough, 2000) ...18
• Fig. 2.2. Survey tracks made by Korean agencies and cooperationsbetween 1983 and 1999 (Chough, 2000) ...19
• Fig. 2.3. R/V Tamhae 2 ...19
• Fig. 2.4. 한국지질자원연구원에서 제공하는 수치해저지질도 자료 현황 ...21
• Fig. 2.5. 일본해양연구개발기구(JAMSTEC) Japan Agency for Marine-Earth Science and Technology)에서 개발하여 사용 중인 심해무인잠수정 ...22
• Fig. 2.6. 미국 지질조사소가 제작한 Massachusetts주 연안지역 해저 지형 및 지질도 ...23
• Fig. 2.7. 영국의 1:250,000 축척 연안 해저지질도 발간 현황 ...24
• Fig. 2.8. 일본의 해저지질도 발간 현황 ...25
• Fig. 3.1. 동해 및 주변해의 지리적, 지정학적 위치(출처: Google Earth) ...26
• Fig. 3.2. 동해의 초기 열개 모델(Jolivet and Tamaki, 1992) ...27
• Fig. 3.3. 해저지질도 제20집 조사구역과 인근 지역의 국영문 해저지명(국립해양조사원, 2007). 굵은 선의 붉은색 사각형은 2009년도 조사구역 ...28
• Fig. 3.4. 조사지역 인근 육상의 지질(출처: 한국지질자원연구원 지질자원제도 웹 서비스, http://gmap.kigam.re.kr). ...29
• Fig. 3.5. 조사기간 중 항측자료 취득 및 모니터링을 위하여 사용된 탐해2호의 Trinav 항측 시스템(좌: Trinav GPS, 우: Trinav RT). ...31
• Fig. 3.6. 항측 기준점 (Ref. Point)과 각 사용 장비들의 이격거리를 보여주는 도면 ...32
• Fig. 3.7. 멀티빔 Sirmad EM12S 장비 모식도 ...34
• Fig. 3.8. 멀티빔 자료처리 과정 ...36
• Fig. 3.9. 조사지역 음속 수직 단면도 ...38
• Fig. 3.10. Noise diagram shown by the TRIACQ system. ...39
• Fig. 3.11. G-880 해상 자력계 시스템의 예인용 센서 ...42
• Fig. 3.12. (a) Benthos Chirp II acoustic profiler system, (b) A piston corer used for this survey. ...43
• Fig. 3.13. Location of core samples (blue cirlces) acquired in the sur area during 2007 to 2009. Orange lines denote the tracks chirp acoustic profiling. ...43
• Fig. 3.14. Gravimeter used for the survey (Microg LaCoste사). ...45
• Fig. 3.15. A picture of the multi-sensor core logger of KIGAM(Geotek MSCL-S) (above). Schematic diagram illustrating central sensor array of a MSCL (lower). Automated MSCL system is composed 4 sensors, each measuhng gamma density, P-wave velocity, electrical resistivity, and magnetic susceptibility of core sedimer (modified after Geotek, 2000). ...51
• Fig. 3.16. Digital image aquisition device attached to a XRF scan ...52
• Fig. 3.17. Spectrophotometer CM-2500d (left) and representation color solid for L*a*b* color space (hght). The numbers each end of circles indicate ranges of L*a*b* values. ...53
• Fig. 3.18. Digital X-ray scanner and sample image. ...53
• Fig. 3.19. Microtrac사의 S3500 모델 레이저 회절 입도분석기의 모습과 내부구조 및 측정원리(아래). ...55
• Fig. 3.20. 2007-2009년 동안 조사된 조사지역 (강릉-삼척 해역)의분포 ...56
• Fig. 3.21. 조사지역 경사 단면도 ...57
• Fig. 3.22. Chirp profile and core locations along the line 09MAP 09-1. ...58
• Fig. 3.23. Photographs and X-radiographs of 09MAP-P01 core. ...62
• Fig. 3.24. Profiles of textural composition, mean size, sorting, wat content, gamma ray attenuation (GRA) density, magnetic susceptibility, and p-wave velocity of core 09MAP-P01. ...63
• Fig. 3.25. Photographs and X-radiographs of 09MAP-P02 core. ...64
• Fig. 3.26. Profiles of textural composition, mean size, sorting, wat content, gamma ray attenuation (GRA) density, magnetic susceptibility, and p-wave velocity of core 09MAP-P02. ...65
• Fig. 3.27. Photographs and X-radiographs of 09MAP-P03 core. ...66
• Fig. 3.28. Profiles of textural composition, mean size, sorting, water content, gamma ray attenuation (GRA) density, magnetic susceptibility, and p-wave velocity of core 09MAP-P03. ...67
• Fig. 3.29. Photographs and X-radiographs of 09MAP-P04 core. ...68
• Fig. 3.30. Profiles of textural composition, mean size, sorting, water content, gamma ray attenuation (GRA) density, magnetic susceptibility, and p-wave velocity of core 09MAP-P04. ...69
• Fig. 3.31. Photographs and X-radiographs of 09MAP-P05 core. ...70
• Fig. 3.32. Profiles of textural composition, mean size, sorting, water content, gamma ray attenuation (GRA) density, magnetic susceptibility, and p-wave velocity of core 09MAP-P05. ...71
• Fig. 3.33. Photographs and X-radiographs of 09MAP-P06 core. ...72
• Fig. 3.34. Profiles of textural composition, mean size, sorting, water content, gamma ray attenuation (GRA) density, magnetic susceptibility, and p-wave velocity of core 09MAP-P06. ...73
• Fig. 3.35. Photographs and X-radiographs of 09MAP-P08 core. ...74
• Fig. 3.36. Profiles of textural composition, mean size, sorting, water content, gamma ray attenuation (GRA) density, magnetic susceptibility, and p-wave velocity of core 09MAP-P08. ...76
• Fig. 3.37. Total isopach map of the northern part of the study area (Kwon et al., 2009). ...77
• Fig. 3.38. Gravity anomaly map of the mapped area including 2009 survey area in the upper left. The unit is mGal and the contour interval is 5 mGal. Note the relatively high value near the Ulleung Island and the central area. ...79
• Fig. 3.39. Magnetic anomaly map of the mapped area including 2009 survey area. The unit is nT. ...80
• Fig. 3.40. 3-dimensional diagram of the bathymetric distribution of study area. View from northeast. List of Tables ...81
• List of Tables
• Table 3.1. 2009년 선상조사에 사용된 탄성파 탐사장비의 제원과 자료취득 사양 ...40
• Table 3.2. Locations and water depth of core sites ...44
• Table 3.3. Detailed specification of MSCL used for the measurement of geophysical properties of marine core sediments which obtained from Ulleung Basin, East Sea, Korea ...52
• Table 3.4. Annual achievement of geophysical data and core samples. ...81