[표제지 등]
제출문
요약문
SUMMARY
목차
제1과제 SBP 디지털 자료 취득 시스템 개발 연구 34
제1절 서론 36
제2절 SBP 시스템의 특성 및 계수화 작업 37
1. SBP 시스템의 구성 37
2. SBP 시스템의 출력부와 계수화 장비 38
제3절 SBP 계수화자료의 신호처리 40
1. 탐사지역 개관 41
2. 아날로그 자료와 디지털 자료의 비교 41
3. 계수화 자료의 신호처리 42
4. 신호처리 자료의 해석 47
제4절 결과 및 기대효과 48
참고문헌 49
제2과제 탐사자료처리 및 활용기법 개발 70
제1절 서론 72
제2절 심해저자료의 데이터베이스화 73
1. 심해저 데이터베이스의 운영시스템 73
2. 심해저자료의 분류 75
3. 데이터타입에 따른 DB구조 해석 78
4. 시험운영을 위한 DB 데이터 입력 80
제3절 심해저 DB의 통합관리 시스템 81
1. 심해저 DB의 client/server 환경 81
2. 심해저 DB 및 GIS 구축 및 운영 82
3. GIS를 이용한 공간DB 구성 85
4. MapInfo GIS의 활용 86
제4절 심해저 DB 및 GIS의 시험 운영 88
제5절 토의 및 결론 89
참고문헌 92
사용자 설명서 93
Appendix. The marine geophysical data exchange format-"MGD77" 137
제3과제 북동적도 태평양 KODOS 환경연구 : 퇴적물내의 ATP를 이용한 미생물 생체량 분석 150
제1절 서론 152
제2절 재료 및 방법 154
1. 시료채취 154
2. 입도 및 함수율 155
3. 유기탄소 함량(POC; Particulate Organic Carbon) 155
4. ATP 분석 155
제3절 결과 및 토의 156
1. 입도 및 함수율 156
2. 유기탄소 함량 157
3. T-ATP (Total ATP) 157
4. D-ATP (Dissolved ATP) 158
5. 시료채취 방법에 따른 분포양상 159
참고문헌 161
제4과제 심해저 퇴적물의 전단강도 측정 연구 172
제1절 서론 174
제2절 시료 채취 175
제3절 계산 방법 178
제4절 측정 기기 및 측정 과정 179
제5절 베인의 회전속도 181
제6절 연구 지역 및 지질 개요 184
제7절 퇴적물의 일반적 특성 186
제8절 정점별 측정 결과 187
1. 정점 1 187
2. 정점 3 188
3. 정점 5 190
4. 정점 15 191
5. 정점 23 193
6. 정점 25 194
제9절 종합결과 및 토의 195
1. 퇴적물의 전단강도와 함수율 변화의 관계 195
2. 수동 베인과 전동베인을 이용한 퇴적물의 전단강도 측정 결과 비교 196
3. 선상과 실험실 측정 결과 비교 196
4. 전동베인을 이용한 전단강도 측정의 장점 197
5. 전단강도와 퇴적물내 생교란 작용과의 관계 198
6. 전단강도와 해저지형과의 관계 198
7. 퇴적물의 탄산질 함량과 전단강도와의 관계 199
8. 퇴적물의 전단 강도 변화를 일으키는 다른 주요 요인들 200
제10절 결론 201
참고문헌 204
부록 210
부록 유엔해양법협약의 심해저 (the Area)광물자원 개발규정에 관한 연구 278
Contents
[title page etc.] 1
SUMMARY 12
Chapter 1. A Study on the Development of PC Based Automatic Digitizing and Data Processing System for the Conventional Analog Type Subbottom Profiler (SBP) 34
Section 1. Introduction 36
Section 2. Configuration of the System and the Digitalizing 37
1. Configuration of the SBP System 37
2. Output Node of the System and Digitalizing Devices 35 38
Section 3. Signal Processing of the Digitalized Data 40
1. Outlook of the Trial Cruise Area 41
2. Comparison of Analog and Digital Output Data 41
3. Signal Processing of Digitalized Data 42
4. Interpretation of the Processed Data 47
Section 4. Conclusion 48
Reference 49
Chapter 2. A Study on Application and Processing Technique of Deep-sea Exploration Data 70
Section 1 Introduction 72
Section 2 Deep-sea Database 73
1. Database Operation System 73
2. Data Type Analysis 75
3. Data Structure Analysis 78
4. Data Input for Test 80
Section 3 Deep-sea Database Management System 81
1. Client/Server 81
2. DB and GIS 82
3. DB Analysis for GIS 85
4. MapInfo GIS 86
Section 4 Operation Test of Deep-sea DB and GIS 88
Section 5 Discussions and Conclusions 89
References 92
User's Guide 93
Appendix MGD 77 format 137
Chapter 3. Environmental Study of KODOS Area in Northeast equatorial Pacific 150
Section 1. Introduction 152
Section 2. Materials and Methods 154
1. Sampling 154
2. Grain Size and Water Contents 155
3. Organic Carbon Contents 155
4. ATP Analysis 155
Section 3. Results and Discussions 156
1. Grain Size and Water Contents 156
2. Organic Carbon Contents 157
3. T-ATP 157
4. D-ATP 158
5. Distribution Patterns with sampling methods 159
References 161
Chapter 4 Measurements of the Shear Strength of Deep-sea Sediments 172
Section 1. Introduction 174
Section 2. of Collection 175
Section 3. Calculation Methods 178
Section 4. Test Systems and Procedures 179
Section 5. Rotational Rate of Shear Vane 181
Section 6. Study Area and Geological Outline 184
Section 7. General Properties of Deep-sea Sediments 186
Section 8. Results 187
1. Site-1 187
2. Site-3 188
3. Site-5 190
4. Site-15 191
5. Site-23 193
6. Site-25 194
Section 9. Discussion 195
1. Relationship between Shear Strength and Water Content 195
2. Comparison of Hand-held Vane and Motorized Vane System 196
3. Comparison of on Board Test and in Test Laboratory Test 196
4. Advantage of Motorized Shear Vane System 197
5. Relationship between Bioturbation and Shear Strength 198
6. Relationship between Topography and Shear Strength 198
7. Relationship between Water Content and Shear Strength 199
8. Other Properties Related to Shear Strength 200
Section 10. Conclusions 201
References 204
Appendix 210
Appendix 278
Table 3-1. Concentrations (ng/g dry sediment) of total ATP (T-ATP) and dissolved ATP (D-ATP), and the percentage of D-ATP to T-ATP 164
Table 4-1. Already reported vane shear apparatus, rotation speed(shear rate) and user 250
Table 4-2. Water depth, corer, length of sediment, vane shear apparatus, measuring times, and test place in each sampling sites 251
Table 4-3. Maximum and residual shear strength of sediment, measured by motorized vane system and hand-held vane on board and in laboratory 252
Fig. 1-1. The schematic diagram of subbottom profiler on R/V Onnuri (a) without CESP, (b) with CESP (longer pulse generator) 50
Fig. 1-2. Photography showing the connection between SBP's output node, oscilloscope, and analog printer 51
Fig. 1-3. Electrical signal plot of reflected energy from sea floor using oscilloscope 52
Fig. 1-4. Arbitrary waveform function generator used to test the trial version of digital acquisition system in the laboratory 53
Fig. 1-5. IBM PC compatible A/D & D/A converter card 54
Fig. 1-6. Pre-amplifier used in this study 55
Fig. 1-7. Array of transducers installed on the hull of R/V Onnuri 56
Fig. 1-8. Location of the application site and survey line 57
Fig. 1-9. Scanned image of the SBP's analog output profile 58
Fig. 1-10. Partial digital output section along the survey line in Fig.8 59
Fig. 1-11. (a) Arbitrary chosen one sample trace in Fig. 10, (b) primary reflected wave in sample trace (a), and (c) amplitude spectrum of primary reflected wave in (b) 60
Fig. 1-12. Angular frequency plot of the bandpass filter 61
Fig. 1-13. Angular frequency plot of the Hanning window 62
Fig. 1-14. Bandpass filtered result of sample trace in Fig. 11(a) 63
Fig. 1-15. Bandpass filtered profile of Fig. 10 64
Fig. 1-16. Envelope Section of Fig. 15 using Hilbert transform 65
Fig. 1-17. Principle of smoothing technique with a rectangular or boxcar window (moving average) 66
Fig. 1-18. Principle of smoothing technique with a triangle window 67
Fig. 1-19. Triangle window smoothing result of Fig. 16 68
Fig. 1-20. Trace picking result with conventional and interpolated method on Fig. 19 69
Fig. 2-1. Menu box in manganese nodule DB 119
Fig. 2-2. The relationship diagram between geological and geochemical DB 120
Fig. 2-3. Menu box in manganese crust DB 121
Fig. 2-4. Menu box in environmental research DB 122
Fig. 2-5. Data structure in station logbook DB 123
Fig. 2-6. Data structure in FFG logbook DB 124
Fig. 2-7. The example of database(table) in Deep-sea Database 125
Fig. 2-8. The network system in Deep-sea Database and GIS 126
Fig. 2-9. Log-on menu box in Access software 127
Fig. 2-10. Log-on menu box in MapInfo software 127
Fig. 2-11. The example of bathymetric color chart in Access DB 128
Fig. 2-12. The initial menu of Deep-sea Database system 129
Fig. 2-13. The main menu box of Database in Access DB 130
Fig. 2-14. The image map(raster type) of bathymetry 131
Fig. 2-15. The image (raster type) map and contour(vector type) map of bathymetry with layer control box 132
Fig. 2-16. The overlay map of slopness in N3 area 133
Fig. 2-17. The image map and contour map of abundance with information box 134
Fig. 2-18. The image map and contour map of abundance with layer control box 135
Fig. 2-19. The image map of gravity anomaly in Ni area 136
Fig. 3-1. A map showing Korea Deep Ocean Study (KODOS) area 165
Fig. 3-2. Sediment classification based on sand-silt-clay ratios in the study area 166
Fig. 3-3. Vertical profiles of water content in the sediment collected with box corer (BC) and multiple corer (MC) 167
Fig. 3-4. Vertical profiles of particulate organic carbon (POC) in the sediment samples collected with box corer (BC) and multiple corer (MC) 168
Fig. 3-5. Vertical profiles of total ATP in the sediment samples collected with box corer (BC) and multiple corer (MC) 169
Fig. 3-6. Vertical profiles of dissolved ATP in the sediment samples collected with box corer (BC) and multiple corer (MC) 170
Fig. 4-1. An Box corer(spade corer) in its sampling configuration 260
Fig. 4-2. Multiple corer in its sampling configuration 261
Fig. 4-3. Major parts and operation sequence of box corer (spade corer) (1) Decent, (2) Box penetration into sediment, (3) Spade rotation(box closure), (4) Ascent following box withdrawal 262
Fig. 4-4. Major parts and operation sequence of multiple corer (1) On bottom, (2) Tubes penetration into sediment, (3) Top valves and core catchers rotation (tubes closure), (4) Ascent following tubes withdrawal 263
Fig. 4-5. The shape of vane blade 264
Fig. 4-6. The measurement of shear strength using a hand-held vane on board 265
Fig. 4-7. The measurement of shear strength using a motorized vane shear system in laboratory 266
Fig. 4-8. Position of vane shear testes in each core section 267
Fig. 4-9. Maximum and residual shear strength following change of torque and time 268
Fig. 4-10. General sediment facies and geography of the north equatorial Pacific Ocean(van Andel and Heath, 1973; Horn et al., 1973). Note; Survey area comprise the distribution of siliceous clay zone 269
Fig. 4-11. Location of sampling sites on bathymetric and topographic map of survey area 270
Fig. 4-12. The photograph of sediment samples showing the various depths of a color boundary (arrow) 271
Fig. 4-13. Relationship between water content and shear strength in deep-sea sediment 274
Fig. 4-14. Water content of sediment plotted against depth below the seafloor 275
Fig. 4-15. Shear strength plotted against time ① Maximum and residual shear strength following change of time in normal trend ② Irregular trend when vane contact to buried Mn-nodule 276
Fig. 4-16. Undisturbed shear strength of deepsea sediment, sampled on slope and plane area, measured by motorized vane system, plotted against depth below the seafloor 277