CAJ | 학술논문

于2013年6月8日至6月9日在江苏如东潮滩进行海底地貌与沉积动力学观测。采用“差值法”从声呐数据中提取底形信息，并分析底形演化与水动力、悬沙浓度的关系。底形数据结果表明，潮周期内底床形态变化明显；分析同步的沉积动力学观测数据发现，底床形态的起伏程度与流速呈正相关关系。随着流速增加，近底部水体悬沙浓度增加，底床形态起伏程度增加；流速减小，近底部水体悬沙浓度回落，底床形态的起伏程度降低。分别分析东西向与南北向底床起伏程度与流速的关系表明，流向对沙纹的起伏程度具有重要影响，垂直沙纹走向的水流会增大底床形态的起伏程度，平行沙纹走向的水流会减小底床形态起伏程度。
우2013년6월8일지6월9일재강소여동조탄진행해저지모여침적동역학관측。채용“차치법”종성눌수거중제취저형신식，병분석저형연화여수동력、현사농도적관계。저형수거결과표명，조주기내저상형태변화명현；분석동보적침적동역학관측수거발현，저상형태적기복정도여류속정정상관관계。수착류속증가，근저부수체현사농도증가，저상형태기복정도증가；류속감소，근저부수체현사농도회락，저상형태적기복정도강저。분별분석동서향여남북향저상기복정도여류속적관계표명，류향대사문적기복정도구유중요영향，수직사문주향적수류회증대저상형태적기복정도，평행사문주향적수류회감소저상형태기복정도。
The hydrodynamics andseabed morphology survey were carried out on the Rudong (Jiangsu)tidal flat in June 8 and June 9,2013.The differencemethod were utilized to extract the bedform information from observed sonar data.Then arelationship was established between the bedform evolution and hydrodynamic/suspended sediment con-centration.The changes in seabed morphology are significant within a single tidal cycle.In addition,a positive relationship was present between the seabed roughness and current velocity.As the current speed increased,the suspended sediment concentration near bottom and the seabedroughnessincreased,and vice versa.Finally,itconcluded that the current direction controlled theseabedroughness.The current crossing the sand ripple couldincrease the roughness of seabed whilethe current along the sand ripple coulddecrease the roughness.