CAJ | 학술논문

利用2007年4月和7月在巴达棱湾进行的旱季和雨季水位、流速、悬沙浓度的全潮观测资料，结合2007年5月~2008年4月周年风、波浪资料，分析该海域悬沙分布特征和运移趋势，并利用机制分解法分析悬沙输运机制。结果表明，研究海域的水体含沙量存在旱季低、雨季高的季节变化，以及大潮高、小潮低的潮期变化；在平面上表现出东西两侧大、中间小，近岸高、远海低的分布特征。单宽输沙量方向与余流方向一致，表现为旱季冲刷、雨季淤积，即旱季指向外海，雨季指向湾内。通量机制分析结果表明，欧拉余流是悬沙输运的主要控制因素，其方向和大小决定了泥沙输移方向和输移量，在水深较深海域，垂向重力环流是相对次要的，而在水深较浅的海域相对次要的是悬沙潮泵输运项。
이용2007년4월화7월재파체릉만진행적한계화우계수위、류속、현사농도적전조관측자료，결합2007년5월~2008년4월주년풍、파랑자료，분석해해역현사분포특정화운이추세，병이용궤제분해법분석현사수운궤제。결과표명，연구해역적수체함사량존재한계저、우계고적계절변화，이급대조고、소조저적조기변화；재평면상표현출동서량측대、중간소，근안고、원해저적분포특정。단관수사량방향여여류방향일치，표현위한계충쇄、우계어적，즉한계지향외해，우계지향만내。통량궤제분석결과표명，구랍여류시현사수운적주요공제인소，기방향화대소결정료니사수이방향화수이량，재수심교심해역，수향중력배류시상대차요적，이재수심교천적해역상대차요적시현사조빙수운항。
Base on the sea level, current, suspended sediment concentration data observed during the dry season in April 2007 and the rainy season in July 2007 in the Tuy Phong Bay, and combined with the annual data of wind and wave from May 2007 to April 2008, the distribution and transport trend of suspended sediment in this area was analyzed. We also carried out dynamic mechanism analysis of suspended sediment transport using the mechanism decomposition method. We found that the suspended sediment concentration had the seasonal property of being lower in dry season and higher in rainy season, the tidal property of being higher during spring tide and being lower during neap tide, and the spatial property of being higher at the east and west sides and being lower in the middle of the bay and of being higher in the near coast region and being lower in the offshore region. The direction of sediment transport per width was consistent with the residual current direction, which was offshore in dry season and onshore in rainy season. The result of transport dynamic analysis showed that the Eulerian residual current was the main control factor for suspended sediment transport, and that the direction and mass of sediment transportation were determined by the residual current, with the secondary control factors being vertical movement in deeper region and tidal pumping in shallow region.