CAJ | 학술논문

利用2012年2月及8月长江口南港-北槽大、小潮水文测验资料，从涨落潮历时、流速、含沙量及含盐度等方面分析了南港-北槽洪枯季水沙盐纵向及垂向分布特征以及潮周期内含沙量变化特性。分析表明：南港-北槽沿程各垂线落潮平均历时洪季整体较枯季长，涨潮平均历时洪季整体较枯季短，且小潮期洪、枯季的这种差异更为明显；南港-北槽洪季落潮流速普遍大于枯季，涨潮流速普遍小于枯季；小潮期涨潮平均流速会出现近底层较表层大现象，且CSW-CS3出现滞流点；北槽中段-口外段洪季含沙量及垂向差异均较枯季大，南港圆圆沙段及北槽上段枯季含沙量较洪季大；潮周期内北槽中段各垂线上层含沙量均较小，且变化幅度相对较小，但下层含沙量变化达数倍乃至十几倍之多，且涨憩时段近底层含沙量可能特别高；洪枯季北槽中段均存在盐水楔，其位置洪季偏上、枯季偏下，最大浑浊带洪枯季位置变化与此基本一致。
이용2012년2월급8월장강구남항-북조대、소조수문측험자료，종창락조력시、류속、함사량급함염도등방면분석료남항-북조홍고계수사염종향급수향분포특정이급조주기내함사량변화특성。분석표명：남항-북조연정각수선락조평균력시홍계정체교고계장，창조평균력시홍계정체교고계단，차소조기홍、고계적저충차이경위명현；남항-북조홍계락조류속보편대우고계，창조류속보편소우고계；소조기창조평균류속회출현근저층교표층대현상，차CSW-CS3출현체류점；북조중단-구외단홍계함사량급수향차이균교고계대，남항원원사단급북조상단고계함사량교홍계대；조주기내북조중단각수선상층함사량균교소，차변화폭도상대교소，단하층함사량변화체수배내지십궤배지다，차창게시단근저층함사량가능특별고；홍고계북조중단균존재염수설，기위치홍계편상、고계편하，최대혼탁대홍고계위치변화여차기본일치。
The hydrological observations in both spring and neap tides are carried out in February and August respectively. Based on these data , this paper studies the changing characteristics of water , sediment and salinity from the south channel to the north passage. Conclusions are drawn as follows:1) The ebb tide duration is longer in the flood season while the rise tide duration is longer in the dry season on the whole. 2) The average flow velocity of the ebb tide is generally bigger in the flood season while the flood current speed is generally bigger in the dry season. During the period of neap tide, there exists the phenomenon that the average velocity of the flood tide near the bottom is bigger than the surface. 3) The value and vertical difference of sediment is larger in the flood season from midstream of the north channel to the water area outside. From the south channel to the upper reach of the north channel, the value of sediment is larger in the dry season. 4) There exists saltwater wedge in the midstream of the north channel which is upper in the dry season.