초록 ▼

$\square$ 연구내용
$\cdot$탄성파탐사자료 현장취득
- 울릉분지 분포해역에서 탄성파탐사 자료취득
자료취득 계획량 : 1,000 L-km
$\cdot$탄성파탐사자료 전산처리
- 2007년도 울릉퇴적분지분포해역 탄성파탐사자료 기본전산처리
자료처리 계획량 1,000 L-km
- 2006년도 제주퇴적분지분포해역(동부) 탄성파탐사자료 정밀전산처리
자료처리 계획량 : 1,500 L-km
$\cdot$탄성파탐

$\square$ 연구내용
$\cdot$탄성파탐사자료 현장취득
- 울릉분지 분포해역에서 탄성파탐사 자료취득
자료취득 계획량 : 1,000 L-km
$\cdot$탄성파탐사자료 전산처리
- 2007년도 울릉퇴적분지분포해역 탄성파탐사자료 기본전산처리
자료처리 계획량 1,000 L-km
- 2006년도 제주퇴적분지분포해역(동부) 탄성파탐사자료 정밀전산처리
자료처리 계획량 : 1,500 L-km
$\cdot$탄성파탐사자료 해석 및 도면작성
- 도미퇴적분지 분포해역(동부) 탄성파탐사자료 해석
자료해석 계획량 : 5,000 $km^2$
$\cdot$탄성파탐사자료 평가 및 도면작성
- 흑산퇴적분지 분포해역 탄성파탐사자료 평가
자료평가 계획량 : 10,000 $km^2$
$\square$ 연구범위
$\cdot$탄성파탐사자료 현장취득
- 울릉분지 분포해역에 대한 탄성파탐사 자료취득
탐사선 : 탐해2호
탐사장비 : Trinav System, Gunco System, Triacq System
$\cdot$탄성파탐사자료 전산자료처리
- 자료처리시스템 : Landmark 사의 Promax 시스템
- 저급중합단면
- 구조보정단면
$\cdot$탄성파탐사자료 해석
- 자료해석 S/W Landmark 사의 Geographix
- 탄성파 층서해석
- 탄성파 구조해석
- 음향기반-광역부정합면 지질구조도와 등층후도 등 도면작성
$\cdot$탄성파탐사자료 평가
- 퇴적분지의 탄성파 층서
- 퇴적분지 성인 및 구조발달사
- 퇴적분지 퇴적환경 연구
- 지질구조도, 퇴적환경도, 에너지자원부존유망지역 분포도 등 도면작성

Abstract ▼

Results of the Study
1. The results of the seismic data acquisition and processing in 2008 are as follows :
- Number of survey lines : 8 seismic lines
- Total length of the lines : 351 Line-km
2. Data processing and interpretation of 2D seismic data was carried out in the western part of

Results of the Study
1. The results of the seismic data acquisition and processing in 2008 are as follows :
- Number of survey lines : 8 seismic lines
- Total length of the lines : 351 Line-km
2. Data processing and interpretation of 2D seismic data was carried out in the western part of the Domi Basin using the seismic profiles acquired in 2007 by R/V Tamhae II.
One regional unconformities and 4 local unconformities were identified in the Domi Basin. The depositional sequence boundaries can be devided into three such as top of acoustic basement and two local unconformities but mapped top of the acoustic basement (MSB) and the megasequences (MS) between acoustic basement and regional unconformity. The depositional environments and tectonic structure developed in the Domi Basin was proposed as follows:
- There are 3 sags developed on the Korean Platform in the Domi Basin.
- A general trend of the faults bounding the half graben structures is ENE-WSW.
- The rifting was interpreted to start in the Late Cretaceous and two times of rifting and tectonic inversions were experienced during the Oligocene.
- In the rifting stage, there were volcanics and volcanoclastic depositions accumulated in the study area. As sediments getting younger, deposition pattern changed from fluvial to lacustrine and shallow marine type.
3. At the point of source rock, straigraphic Interpretation of 2D seismic data was carried out in the Gunsan Basin. Two prospect areas are delineated f3r the further studies such as 3D seismic survey or drilling sites.
4. Data assessment of 2D seismic data was carried out in the Heugsan Basin using the seismic data acquired in 2004 by R/V Tamhae II and provided from KNOC. One regional unconformities was identified in the Heugsan Basin. The outline of the Heugsan Basin was proposed as follows:
- The Heugsan Basin may be divided into two sags by massif.
- The rifting was interpreted to start in the Late Cretaceous and two times of rifting and tectonic inversions were experienced.
- In the same time of rifting stage, a large amounts of carbonate deposits were accumulated in the study area.
- Most of NW-SE and NE-SW trending growth fault groups and strike-slip fault groups are thought to be conjugate fault to the main fault system with N-S direction
- No prospect area is delineated for the further studies such as 3D seismic survey.
Application of the Study Results
$\square$ Science and Technology Research
$\cdot$To provide basic data and informations such as evolution and environments of the sedimentary basins in the Korea continental shelf.
$\cdot$To provide basic data and informations such as geological structure and stratigraphy to assess marine mineral and energy resources.
$\cdot$To provide basic data for understanding of tectonic researches of the Korean Peninsula and the Northeast Asia.
$\square$ Socio-economic Application
$\cdot$To provide data and informations to plan national energy supply program.
- Estimation of the potential value of the energy resources reserved in the Korea continental shelf.
$\cdot$To provide data for the determination of the EEZ boundary and secure the offshore sovereignty and marine resources.
$\cdot$To support technical cooperation with North Korea for the offshore mineral and energy resources development program.
$\square$ Public and Industrial Application
$\cdot$Domestic and foreign offshore hydrocarbon exploration and deep sea geophysical exploration.
$\cdot$To provide basic data and exploration technology for the public purpose civil engineering and construction project.
$\cdot$Training technical and research manpower for marine exploration.

목차 Contents

• 제 1 장 서론 ...21
• 제 1 절 연구 배경 및 목적 ...21
• 제 2 절 연구 범위 ...23
• 제 2 장 국내외 기술 개발 현황 ...24
• 제 1 절 서언 ...24
• 제 2 절 해저 탄성파탐사기술 현황 ...25
• 1. 국내외 자료취득 기술 ...25
• 2. 국내외 전산처리 기술 ...27
• 3. 국내외 탐사자료 해석 기술 ...32
• 제 3 장 연구개발 수행 내용 및 결과 ...35
• 제 1 절 탄성파 탐사 자료취득 ...35
• 1. 탄성파 탐사 측선설계 ...35
• 2. 자료 취득변수 ...36
• 3. 항측 ...37
• 4. 음원 제조 ...44
• 5. 자료기록 ...46
• 6. 품질관리 ...47
• 제 2 절 탄성파탐사 자료처리 ...60
• 1. 서언 ...60
• 2. 전산처리 시스템 ...63
• 3. 전산처리 ...64
• 4. 전산처리 결과 ...92
• 제 3 절 탄성파자료 자료해석 ...93
• 1. 광역 지질 ...94
• 2. 탄성파 탐사자료 ...98
• 3. 도미퇴적분지 탄성파탐사자료 해석결과 ...98
• 제 4 절 탄성파탐사 자료평가 ...109
• 1. 군산퇴적분지 ...109
• 2. 흑산퇴적분지 ...122
• 제 5 절 연구결과 ...126
• 제 4 장 연구개발목표 달성도 및 대외기여도 ...130
• 제 5 장 연구개발결과의 활용계획 ...134
• 제 6 장 참고문헌 ...136
• Fig. 2-2-1. Common receiver gathers of OBS#3 in the 07FL-003 line(upper: vertical component, lower: hydrophone data) and their resolution(upper & lower right) ...29
• Fig. 2-2-2. Inline section of OBS #3 after 90 degrees trace rotation ...30
• Fig. 2-2-3. Common shot gather of OBS #4 of 201 wide refraction survey line ...31
• Fig. 2-2-4. P wave velocity profile of site-4(OBS#4) using Tau-sum inversion ...31
• Fig. 2-2-5. Reflection attributes used in seismic facies analysis ...34
• Fig. 3-1-1. Survey area and survey lines designed for this study ...35
• Fig. 3-1-2. System configuration of integrated navigation system(TRINAV) of Tamhae2 and flowchart for acquisition and processing of navigation data ...38
• Fig. 3-1-3. Vessel equipment deployment diagram for 08AQ 2-D seismic survey ...40
• Fig. 3-1-4. Final survey track chart(Refer to Fig. 3-1-1) ...44
• Fig. 3-1-5. Specification of airgun sub-array ...45
• Fig. 3-1-6. Basic QC processing jobs ...49
• Fig. 3-1-7 Source configuration and signature (or 2D seismic survey. (a) source configuration (b) source signature ...54
• Fig. 3-1-8. TIDI RMS profile for all sequence of 07AQ survey lines(a)~(t) ...57
• Fig. 3-1-9. Seismic interference noise on the 08AQ-106 seismic line ...58
• Fig. 3-1-10. Onboard processed brute stack seismic profile of Line 08AQ-102 for quality control ...59
• Fig. 3-2-1. 2D seismic data processing work flow for 07 AQ data set ...62
• Fig. 3-2-2. Quality control in geometry process, (a) CDP fold number, (b) CDP X-Y position plot with statistic histogram, (c) receiver offlet with trace number ...66
• Fig. 3-2-3. Parameter test to define optimal gain value. Left upper trace is set to 8 dB/sec, right upper shows 4 dB/sec, left lower corresponds 2 dB/sec, and right lower trace is raw shot record for field file identify number of 1,510 ...67
• Fig. 3-2-4. Trace edit and statistics result. Left window shows editing result of 8 different channel and right window show trace statistics data for all trace order with source index number, amplitude decay rate, frequency deviation, spikes and average trace energy ...68
• Fig. 3-2-5. Auto-correlogram to apply minimum phase predictive deconvolution filter. Left window: before deconvolutin, right: after deconvolution with red arrow indicates travel time where appears multiple reflection signal ...69
• Fig. 3-2-6. Brute stack with horizontally constant velocity and layer pick examples for sample survey line ...70
• Fig. 3-2-7. Velocity analysis process for 07AQ survey. left panel indicates velocity semblance computation, middle left panel shows CMP gather at the velocity picking point, middle right is neighboring 9 points to the velocity picking point and right panel is pre-computed window ...72
• Fig. 3-2-8. Volume Viewer of 07AQ survey showing geologic trend with color velocity map. Green color indicates low stacking velocity and light red color matches high stacking velocity ...73
• Fig. 3-2-9. Radon filtering result. Left panel is correspond to input data, middle shows modeled data by Radon analysis, and right seismic traces show filtered data Red arrow indicates a travel time where water bottom multiple noise exists ...74
• Fig. 3-2-10. Time migrated section of 07AQ seismic survey. (a) seismic line 07AQ-001, (b) seismic line 07AQ-005, (c) seismic line 07AQ-005A ...76
• Fig. 3-2-11 Time migrated section of 07AQ seismic survey. (a) seismic line 07AQ-002, (b) seismic line 07AQ-002A, (c) seismic line 07AQ-002B ...77
• Fig. 3-2-12. Time migrated section of 07AQ seismic survey. (a) seismic line 07AQ-003, (b) seismic line 07AQ-007, (c) seismic line 07AQ-011 ...78
• Fig. 3-2-13. Time migrated section of 07AQ seismic survey for seismic line 07AQ-004 ...79
• Fig. 3-2-14. Time migrated section of 07AQ seismic survey. (a) seismic line 07AQ-00 (b) seismic line 07AQ-006A ...80
• Fig. 3-2-15. Time migrated section of 07AQ seismic survey. (a) seismic line 07AQ-008, (b) seismic line 07AQ-008A, (c) seismic line 07AQ-008B ...81
• Fig. 3-2-16. Time migrated section of 07AQ seismic survey, (a) seismic line 07AQ-009, (b) seismic line 07AQ-013, (c) seismic line 07AQ-015, (d) seismic line 07AQ-017 ...82
• Fig. 3-2-17. Time migrated section of 07AQ seismic survey for seismic line 07AQ-010 ...83
• Fig. 3-2-18. Time migrated section of 07AQ2 seismic survey. (a) seismic line 07AQ2-001, (b) seismic line 07AQ2-003, (c) seismic line 07AQ2-005 ...85
• Fig. 3-2-19. Time migrated section of 07AQ2 seismic survey. (a) seismic line 07AQ2-002, (b) seismic line 07AQ2-004, (c) seismic line 07AQ2-006 ...86
• Fig. 3-2-20. Time migrated section of 07AQ2 seismic survey. for seismic line 07AQ2-010 ...87
• Fig. 3-2-21. Time migrated section of 07AQ seismic survey. for seismic line 07AQ-012 ...88
• Fig. 3-2-22. Time migrated section of 07AQ2 seismic survey for seismic line 07AQ2-018 ...89
• Fig. 3-2-23. CDP fold number after geomeoy construction for 08AQ-102 seismic line(upper frame) and fold histogram(lower frame) ...90
• Fig. 3-2-24. Test stack section of 08AQ-102 seismic line ...91
• Fig. 3-3-1. Track chart of the Jeju Basin 2007 ...93
• Pig. 3-3-2. Geological Structural Divisions of the East China Sea ...96
• Fig. 3-3-3. Geological structure map of the Domi Basin ...99
• Fig. 3-3-4. The Geological Structral Map of the East China Basin ...100
• Fig. 3-3-5 Structural Map of Plio-Pleistocene Regional Unconformity ...101
• Fig. 3-3-6 Structural Map of Sea - floor ...102
• Fig. 3-3-7. Total Isochrone Map of Korean Continental Shelf Block V & Block VI in the East China Sea Basin ...103
• Fig. 3-3-8. The Interpretated Seismic Section(00~009) of Block V & Block VI in the East China Sea Basin within the Korean Continental Shelf ...104
• Fig. 3-3-9. The Interpretated Seismic Section(011~017, 2-001~005)of Block V & Block VI in the East China Sea Basin within the Korean Continental Shelf ...105
• Fig. 3-3-10. The Interpretated Seismic Section(002~006)of Block V & Block VI in the East China Sea Basin within the Korean Continental Shelf ...106
• Fig. 3-3-11. The Interpretated Seismic Section(006a~010, 2-002)of Block V & Block VI in the East China Sea Basin within the Korean Continental Shelf ...107
• Fig. 3-3-12. The Interpretated Seismic Section(2-004~2-018)of Block V & Block VI in the East China Sea Basin within the Korean Continental Shelf ...108
• Fig. 3-4-1. Left figure is the physiographic and tectonic map of the South Yellow Sea Basin. The box in the right figure represents distribution of seismic reflection data in the Kunsan Basin. five wells are shown ...111
• Fig. 3-4-2. Seismic profiles showing the top of acoustic basement, sequence bound: (SB1-SB 14), sequences(501-5013), megasequence boundaries(MSB I-MSB III) and megasequences(MSQ I-MSQ III). Ages of the top of the ace basement and SBI-SBl4 were correlated with the ages of the paleontology analysis results of the 5 wells drilled in the Kunsan Basin. See Fig. 3-4-l for location ...113
• Fig. 3-4-3. Geological structure map of the Kunsan Basin. 4 massifs(northern, north central and southern massifs) and 3 sags(northeast, central and southwest sags) are developed. Central and Southwest sags are consisted of 3 and 2 subunits, respectively. Central massifs are divided into 2 blocks. Several small subsags are scattered in the Northeast sag ...115
• Fig. 3-4-4. Prospect area of the Kunsan Basin ...119
• Fig. 3-4-5. Isochron maps of the sequences(SQ) 2, 3, 4 and 5. Shaded area indicates seismic facies map interpreted as lacustrine environment in each sequence. Contour intervals in ms two-way travel time ...120
• Fig. 3-4-6. Chart of Seismic Lines ...123
• Fig. 3-4-7. Isochron map of Acoustic basement - Regional Unconformity ...124
• Fig. 3-4-8. A seismic section showing the acoustic basement and regional unconformity ...124
• Fig. 3-4-9. Time structure map of the regional unconformity ...125
• Table 3-1-1. Acquisition parameters ...36
• Table 3-1-2. Geodetic parameters for 2008 survey ...39
• Table 3-1-3. Specifications of Each Navigation System ...41
• Table 3-1-4. Production line summary for 2-D seismic survey of 08AQ ...47
• Table 3-1-5. Results of dropout test for the 2D seismic source ...55
• Table 3-1-6. RMS values for 2D seismic survey ...56
• Table 3-3-1. Tectonic deformation of the East China Sea Shelf Basin and regional dynamics ...97