HYDRODYNAMIC CHARACTERISTICS OF YANCHENG COASTAL AREA IN JIANGSU PROVINCE
-
摘要:
通过2018年对江苏盐城近岸海域（射阳港至大丰港之间）布设的4个测流站位夏冬两季连续25 h海流、悬沙浓度的观测资料，对该地区的水动力特征进行了初步分析，结果表明：新洋港到四卯酉河口沿岸的潮流主轴的方向基本与等深线走向一致，呈现明显的往复流特征，射阳港附近站位（JS-YWPY01站）涨潮流以SW向为主，落潮流以NNE向为主；JS-YWPY02、JS-YWPY03和JS-YWPY04 3站涨潮流均以SE向为主，落潮流均以NW向为主，JS-YWPY03站和JS-YWPY04站涨潮流流速大于落潮流流速；25 h内出现2次涨落潮，落潮历时大于涨潮历时，而涨潮流速大于落潮流速，最大流速一般发生在中潮位时刻，最小流速均发生在高潮或低潮时刻，测区一带潮汐属于正规半日潮，潮流在观测周期内呈现显著的变化特征。
Abstract:Based on the observation data of current and suspended sediment concentration of four current measuring stations in Yancheng inshore sea area (between Sheyang port and Dafeng port) in 2018 for 25 consecutive hours in summer and winter, the hydrodynamic characteristics of the area are preliminarily analyzed. The results show that the main direction of the tidal current from Xinyang port to simaoyou estuary is basically consistent with the trend of the isobath, showing obvious reciprocating flow characteristics, and Sheyang port is attached In the near station (JS-YWPY01 station), the rising tide is mainly in SW direction, and the ebb tide is mainly in NNE direction; in JS-YWPY02, JS-YWPY03 and JS-YWPY04 stations, the rising tide is mainly in SE direction, and the ebb tide is mainly in NW direction, and the rising tide velocity in JS-YWPY03 and JS-YWPY04 station is greater than the ebb tide velocity; in 25 h, there are two ebb tides, the ebb tide duration is greater than the ebb tide duration, while the rising tide velocity is greater than the ebb tide velocity, and the maximum ebb tide velocity occurs The velocity generally occurs at the middle tide level, and the minimum velocity occurs at the high tide or low tide. The tide in the survey area belongs to normal semidiurnal tide, and the tide presents significant change characteristics in the observation period.
-
-
表 1 2018年夏季含沙量观测特征值
Table 1. The observed characteristic values of sediment concentration in summer of 2018
站位 表层/（kg/m3） 底层/（kg/m3） 表、底比 落、涨比 潮型 平均 最大 平均 最大 JS-YWPY01 0.74 1.46 0.99 1.84 1：1.34 1：1.27~1.58 大潮 JS-YWPY02 0.49 1.04 0.59 1.26 1：1.19 1：1.03~1.21 大潮后中潮 JS-YWPY03 0.04 0.19 0.35 0.73 1：9.05 1：0.91~1.28 小潮 JS-YWPY04 0.06 0.33 0.49 2.08 1：8.17 1：0.22~0.47 小潮后中潮 
下载: 导出CSV
表 2 2018年冬季含沙量观测特征值
Table 2. The observed characteristic values of sediment concentration in winter of 2018
站位 表层/（kg/m3） 底层/（kg/m3） 表、底比 落、涨比 平均 最大 平均 最大 JS-YWPY01 0.33 0.79 0.78 1.43 1：2.35 1：1.15~1.35 JS-YWPY02 0.17 0.38 0.29 0.82 1：1.69 1：0.96~1.44 JS-YWPY03 0.14 0.24 0.31 0.44 1：1.81 1：0.89~0.97 JS-YWPY04 0.10 0.15 0.25 0.34 1：1.42 1：0.85~0.94
下载: 导出CSV
-
[1] 王逸涵,王韫玮,于 谦,等. 江苏海岸中部近岸冬季潮汐和潮流特征[J]. 海洋科学,2019,43(10):1-9.
[2] 李 鹏,秦渭华. 南黄海辐射沙洲海域夏季潮流特征[J]. 上海国土资源,2012,33(4):34-38.
[3] 戴志军,施伟勇,陈 浩. 沙坝-潟湖海岸研究进展与展望[J]. 上海国土资源,2011,32(3):12-17. doi: 10.3969/j.issn.2095-1329.2011.03.006
[4] 任美锷. 江苏省海岸带与海涂资源综合调查报告[M]. 北京: 海洋出版社, 1986: 517.
[5] 丁贤荣,康彦彦,茅志兵,等. 南黄海辐射沙脊群特大潮差分析[J]. 海洋学报,2014,36(11):12-20.
[6] 刘志亮,胡敦欣. 黄海夏季近岸海区环流的初步分析及其与风速的关系[J]. 海洋学报,2009,31(2):1-7.
[7] Yuan D,Zhu J,Li C,et al. Cross-shelf circulation in the Yellow and East China Seas indicated by MODIS satellite observations[J]. Journal of Marine System,2008,70:134-149. doi: 10.1016/j.jmarsys.2007.04.002
[8] Yuan D,Li Y,Wang B,et al. Coastal circulation in the southwestern Yellow Sea in the summers of 2008 and 2009[J]. Continental Shelf Research,2017,143:101-117. doi: 10.1016/j.csr.2017.01.022
[9] Tak Y J,Cho Y K,Seo G H,et al. Evolution of wind-driven flows in the Yellow Sea during winter[J]. Journal of Geophysical Research:Oceans,2016,121:1970-1983.
[10] 陆 勤,陈沈良. 废黄河三角洲海域表层沉积物分布特征[J]. 上海国土资源,2011,32(1):14-19. doi: 10.3969/j.issn.2095-1329.2011.01.004
[11] 汤毓祥,姚兰芳. 南黄海潮流和潮余流的数值计算[J]. 海洋湖沼通报,1989(2):1-7.
[12] 万延森,张耆年. 江苏近海辐射状沙脊群的泥沙运动与来源[J]. 海洋与湖沼,1985,16(5):392-399.
[13] 王玉海. 新洋港侵蚀区高分辨率泥沙输运数值模型2019年度研究报告[R]. 中国水利水电科学研究院, 2019.
-
图(8)
表(2)
计量
- 文章访问数: 1379
- PDF下载数: 127
- 施引文献: 0