표제지
목차
제1장 서론 10
1.1. 연구 배경 10
1.2. 연구 목적 14
제2장 자료 및 방법 16
2.1. 연구해역 특성 16
2.2. 해/조류 관측 18
2.3. 기상 자료 19
2.4. 분석 방법 26
제3장 조류 특성 29
3.1. 유속관측 자료의 기본 통계 29
3.2. 조화분석 결과 32
3.3. 조류타원 분석 결과 36
3.4. 예측 조류의 특성 40
제4장 기상조건에 따른 잔차류 변동 특성 43
4.1. 비조류(잔차류) 특성 43
4.2. 기상조건 변화에 따른 잔차류 반응 48
4.3. 잔차류에 대한 바람의 영향 53
4.4. 잔차류와 바람의 시공간적 변동 특성 60
4.5. 잔차류와 기상조건의 관계 65
제5장 요약 및 토의 68
5.1. 조류 특성 68
5.2. 기상조건에 따른 잔차류 변동 특성 69
참고문헌 76
ABSTRACT 83
Table 2-1. Basic statistics for wind data on three weather staions measured by Korea Meteorological Administration (KMA), and MERRA2 dataset, for... 26
Table 3-1. Basic statistics of selected layers for the current records in terms mean, mini- and maximal values, standard deviation of current speed. 32
Table 3-2. Basic statistics of selected layers for the current records in terms mean, mini- and maximal values, standard deviation of u- and v-components 32
Table 3-3. The major tidal harmonic constituents of the currents for selected layers. 35
Table 3-4. Tidal ellipses for the four major harmonic constituents of selected layers. 39
Table 3-5. Basic statistics of selected layers for estimated tidal currents in terms mean, mini- and maximal values, standard deviation of u- and... 42
Table 3-6. Basic statistics of selected layers for estimated tidal currents in terms mean, mini- and maximal values, standard deviation of flood and ebb currents. 42
Table 4-1. Basic statistics of selected layers for residual currents in terms mean, mini- and maximal values, standard deviation of u- and v-components. 45
Table 4-2. Cross-correlation coefficients and time lags for maximum absolute correlations. W1, W2 denote the two leading surface wind CEOF... 66
Fig. 2-1. Bathymetry near Anmyeon-do in the Yellow Sea. Black contours indicate water depth at 10 m interval. The mooring sites for an acoustic... 17
Fig. 2-2. (a) The temporal variations of zonal (upper panel) and meridional (bottom panel) winds on the three Korea Meteorological Administration (KMA) weather stations (Keunheung, Sabsi-do and Juk-do) and the MERRA2 dataset. (b)... 22
Fig. 2-3. (a) The temporal evolution of zonal (upper panel), meridional (middle panel) winds at the surface, and both in vector form (bottom panel). The band-passed filtered time series are overlaid in red (see the main text for details).... 23
Fig. 2-4a. Horizontal distribution of Sea Level Pressure (SLP) and surface wind field around Korea Peninsula during April 16 to 17, 2016. 24
Fig. 2-4b. Horizontal distribution of Sea Level Pressure (SLP) and surface wind field around Korea Peninsula during May 2 to 3, 2016. 25
Fig. 3-1. Time series vector of raw current records measured at (a)ST01 and (b)ST02. 31
Fig. 3-2. Tidal ellipses of major tidal harmonic constituents, obtained from harmonic analysis of observed current profile data at ST01. 37
Fig. 3-3. Tidal ellipses of major tidal harmonic constituents, obtained from harmonic analysis of observed current profile data at ST02. 38
Fig. 3-4. Time series vector of harmonic analysis results at (a)ST01 and (b)ST02. 41
Fig. 4-1. Time series of residual current in selected layers at ST01. Black (red) line represents (band-passed) residual current. 46
Fig. 4-2. Time series of residual current in selected layers at ST02. Black (red) line represents (band-passed) residual current. 47
Fig. 4-3. (a) Temporal evolution of weather conditions and residual currents for Apr 15 - 18, 2016. (b) Depth-averaged residual currents presented for every three hours after the... 51
Fig. 4-4. As for Fig. 4-3, but covering the period May 2-4, 2016. 52
Fig. 4-5. (a) Cumulative travel distance and (b) progressive vector diagram for band-passed wind. 55
Fig. 4-6. Cumulative travel distance and progressive vector diagram for band-passed residual current at (a) L08(surface), (b) L05(middle) and (c)... 56
Fig. 4-7. Cumulative travel distance and progressive vector diagram for band-passed residual current at (a) L08(surface), (b) L05(middle) and (c)... 57
Fig. 4-8. (a) The complex correlation coefficient and (b) phase, between residual current and wind field, at each vertical layer. 59
Fig. 4-9. Principal components of: (a) the two leading CEOF modes for the amplitudes of the surface wind field; and (b) the three leading modes for the amplitudes of the residual current profiles. Based on band-pass filtered time... 62
Fig. 4-10. The three leading CEOF modes for the residual current profiles. The black arrows indicate R1, blue arrows indicate R2, and red arrows... 64
Fig. 4-11. Power spectra for: (a) the PCs of the surface winds presented in the Fig. 4-3, overlaid with MERRA2 sea-level pressure; (b) the PCs of the residual currents. 67