上海国土资源
上海國土資源
상해국토자원
2012年
4期
34~38
,共null页
南黄海 辐射沙洲 潮流 滩涂
南黃海 輻射沙洲 潮流 灘塗
남황해 복사사주 조류 탄도
south Yellow Sea; radial sandbank; tidal current; wetland
为揭示南黄海辐射沙洲海域夏季潮流特征和变化规律，于2011年7月12日～8月11日在南通岸9t,2个固定点利用ADCP潜标进行了分层海流和水位观测。结果表明：（1）海域为规则半日潮，潮差较强（A和B站最大潮差分别为8．07m和5．89m），属强潮海域；（2）剖面各层流速垂向差异明显，表层流速最大（A和B站月均流速分别为98．2cm／s和92．Ocm／s），向底层逐渐减小（A和B站月均流速分别为62．6cm／s和55．5cm／s）；表层流速受海况影响明显，两站各层最大流速均出现在涨潮时段涨急时刻（A和B站最大流速分别为234cm／s和229cm／s）；（3）A和B站潮流均属往复流，受地形限制涨落潮主流向和深槽的延伸方向基本一致；表层流流向受风况影响显著，甚至出现单一流向；（4）A和B站余流流速从底层至表层递增，表层流速最大，流向分别为西南或偏西北与西北向，方向均为向岸型，有利于滩涂淤涨和水产养殖山／发展。
為揭示南黃海輻射沙洲海域夏季潮流特徵和變化規律，于2011年7月12日～8月11日在南通岸9t,2箇固定點利用ADCP潛標進行瞭分層海流和水位觀測。結果錶明：（1）海域為規則半日潮，潮差較彊（A和B站最大潮差分彆為8．07m和5．89m），屬彊潮海域；（2）剖麵各層流速垂嚮差異明顯，錶層流速最大（A和B站月均流速分彆為98．2cm／s和92．Ocm／s），嚮底層逐漸減小（A和B站月均流速分彆為62．6cm／s和55．5cm／s）；錶層流速受海況影響明顯，兩站各層最大流速均齣現在漲潮時段漲急時刻（A和B站最大流速分彆為234cm／s和229cm／s）；（3）A和B站潮流均屬往複流，受地形限製漲落潮主流嚮和深槽的延伸方嚮基本一緻；錶層流流嚮受風況影響顯著，甚至齣現單一流嚮；（4）A和B站餘流流速從底層至錶層遞增，錶層流速最大，流嚮分彆為西南或偏西北與西北嚮，方嚮均為嚮岸型，有利于灘塗淤漲和水產養殖山／髮展。
위게시남황해복사사주해역하계조류특정화변화규률，우2011년7월12일～8월11일재남통안9t,2개고정점이용ADCP잠표진행료분층해류화수위관측。결과표명：（1）해역위규칙반일조，조차교강（A화B참최대조차분별위8．07m화5．89m），속강조해역；（2）부면각층류속수향차이명현，표층류속최대（A화B참월균류속분별위98．2cm／s화92．Ocm／s），향저층축점감소（A화B참월균류속분별위62．6cm／s화55．5cm／s）；표층류속수해황영향명현，량참각층최대류속균출현재창조시단창급시각（A화B참최대류속분별위234cm／s화229cm／s）；（3）A화B참조류균속왕복류，수지형한제창락조주류향화심조적연신방향기본일치；표층류류향수풍황영향현저，심지출현단일류향；（4）A화B참여류류속종저층지표층체증，표층류속최대，류향분별위서남혹편서북여서북향，방향균위향안형，유리우탄도어창화수산양식산／발전。
The characteristics of currents operating in a vertical profile were investigated by measuring vertical current speed and direction in two fixed locations in the southern Yellow Sea, near Nantong, Jiangsu Province. Current flow was measured from July 12 to August 11, 2011 using an ADCP. The area is macrotidal, experiencing semi-diurnal tides with a tidal range of 8.07 m and 5.89 m at monitored stations A and B, respectively. There are significant differences in tidal current velocity throughout the vertical profile. Surface currents were inferred from sea conditions. The average velocity decreased from the surface （98.2 cm/s at station A and 92.0 cm/s at station B） to the bottom （62.6 cm/s at station A and 55.5 cm/s at station B）. Intertidal and spring-neap flows are highly variable, with peak velocities of 234 cm/s and 229 cm/ s recorded during flood tidal stages at stations A and B, respectively. In the study area, the current direction alternated, and was consistent with the orientation of deep channels. The surface current was inferred from sea conditions, and consistently flowed in the same direction. In the vertical profile, average residual flow velocity was highest at the surface and lowest at the seabed. The residual flow was directed southwest at station A, and west and northwest at station B. In both cases, residual flow was toward the coastline where wetlands are located. This is likely to benefit the wetland in terms of accretion and the development of aauatic habitats.
