江苏条子泥沙洲内缘区潮滩粒度特征及其影响因素

陈君; 陈宏友; 徐国华; 王义刚; 蔡辉

doi:10.3724/SP.J.1140.2011.06021

江苏条子泥沙洲内缘区潮滩粒度特征及其影响因素

1 河海大学港口海岸与近海工程学院, 南京 210098;
2 江苏省农业资源开发局, 南京 210008

基金项目:

中央高校基本科研费项目(B1020098)

国家自然科学基金项目(40806018)

江苏近海海洋综合调查与评价项目(JS-908-01-02-01)

详细信息

作者简介:
陈君(1974-),女,副教授,博士,主要从事海岸动力地貌研究,E-mail:junchen@hhu.edu.cn

中图分类号: P736.2
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出版历程
- 收稿日期: 2011-03-19
- 修回日期: 2011-06-27

GRAIN SIZE CHARACTERISTICS AND INFLUENCE FACTORS OF THE TIDAL FLAT DEPOSITS AT THE TIAOZINI SANDBANK, JIANGSU PROVINCE

1 Harbour, Coastal and Nearshore Engineering of Hohai University, Nangjing 210098;
2 Agricultural Resources Development Bureau of Jiangsu Province, Nangjing 210008

摘要

摘要: 条子泥沙洲位于江苏岸外辐射沙脊群的核心区,水动力条件独特,地貌复杂。利用2009年5月11日在条子泥沙洲内缘区3条断面的潮滩表层沉积物粒度资料,分析该区域潮滩沉积物的粒度参数特征、沉积物粒度组成及沿程变化等,探讨不同岸段的沉积特征与水动力环境特征的相关性,以及影响潮滩沉积特征的主要因素等。结果表明,潮滩沉积物以砂质粉砂为主,自堤向海由细变粗,平均粒径为4~6 Φ,分选较好,正偏态,峰态尖锐,以跃移搬运为主;影响潮滩沉积的主要因素有沙洲潮沟系统的演变、不同时期的匡围工程、海岸盐沼发育等,其中不同匡围工程所形成的曲折人工岸线是导致潮滩沉积物差异特征性的主要原因。
- 粒度参数 /
- 潮滩剖面 /
- 潮沟系统 /
- 匡围工程 /
- 江苏条子泥沙洲
Abstract: The Tiaozini sandbank is located in the center of the Radiative Sandy Ridges along the coast of Jiangsu province, formed in a special hydrodynamic environment with complex geomorphology. Surface sediment samples were collected from the tidal flat of the Tiaozini sandbank on May 11, 2009. Grain size parameters (i.e. mean size, sorting coefficient, skewness and kurtosis), the composition of sediment and the elevation of tidal flat along three profiles were acquired. Our results indicate that the sediment consists of sandy silt coarsening seawards. It is about 4-6Φ in mean size, and well sorted, with positive skewness and sharp kurtosis. Components of saltation dominate. The depositional features of the tidal flat deposits are mainly influenced by tidal creeks, tidal salt marshes, the erosion and deposition of the sand banks and land reclamation activities. Irregular coastlines caused by land reclamation in different periods are the main factor influencing the characteristics of the tidal flat.
- grain size parameter /
- tidal flat profile /
- tidal creeks /
- land reclamation /
- Tiaozini sandbank

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参考文献(12)

[1]	Suursaar U, Jaagus J, Kont A,et al. Field observations on hydrodynamic and coastal geomorphic processes off Harilaid Peninsula (Baltic Sea) in winter and spring 2006-2007[J]. Estuarine, Coastal and Shelf Science, 2008, 80:31-41.
[2]	Matthew Kirwan, Stijn Temmermanb. Coastal marsh response to historical and future sea-level acceleration[J]. Quaternary Science Reviews, 2009, 28:1801-1808.
[3]	Paula D Pratolongo, Gerardo M E Perillo, M Cintia Piccolo. Combined effects of waves and plants on a mud deposition event at a mudflat-saltmarsh edge in the Bahía Blanca estuary[J]. Estuarine, Coastal and Shelf Science, 2010, 87:207-212.
[4]	Douglas A George, Paul S Hill. Wave climate,sediment supply and the depth of the sand-mud transition:A global survey[J]. Marine Geology, 2008, 254:121-128.
[5]	王爱军,汪亚平,杨扬,等. 江苏王港潮间带表层沉积物特征及输运趋势[J].海洋地质与第四纪地质,2004,24(1):124-129. [WANG Aijun, WANG Yaping, YANG Yang. Surface sediment characteristics and transport trends on the Wanggang intertidal flat, Jiangsu Province[J]. Marine Geology and Quaternany Geology, 2004, 24(1):124-129.]
[6]	任美锷. 江苏省海岸带和海涂资源综合调查[M]. 北京:海洋出版社, 1986:25-37.[REN Meie. Comprehensive Investigation of the Coastal Zone and Tidal Flat Resources of Jiangsu Province[M]. Beijing:China Ocean Press, 1986:25 -37.]
[7]	McManus J.Grain size determination and interpretation[M]//In:Techniques in Sedimentology,Techniques in Sedimentology. Backwell, Oxford.1988:63-85.
[8]	Folk R L, Andrews P B, Lewis D W, Detrital sedimentary rock classification and nomenclature for use in New Zealand[J]. New Zealand Journal of Geology and Geophysica, 1970, 13:937-968.
[9]	Blair T C, McPherson J G. Grain-size and textural classification of coarse sedimentary particles[J]. Journal of Sedimentary Research, 1999,69(1):6-19.
[10]	陈才俊.江苏淤长型淤泥质潮滩的剖面发育[J].海洋与湖沼,1991,11(4):360-368. [CHEN Caijun. Development of depositional tidal flat in Jiangsu Province[J]. Oceanologia et Limnologia Sinica, 1991, 22(4):360-368.]
[11]	江苏省农业资源开发局.江苏沿海垦区[M]. 北京:海洋出版社,1999:62-85.[Agricultural Resources Development Bureau of Jiangsu Province. Coastal Reclamation of Jiangsu Province[M]. Beijing:China Ocean Press, 1999:62 -85.]
[12]	毛志刚,王国祥,刘金娥,等. 苏北滨海湿地不同植被带沉积物粒度特征分析[J].海洋科学进展,2008,26(4):454-463. [MAO Zhigang, WANG Guoxiang, LIU Jiner, et al. Characteristics of grain-size distributions in different vegetation zones of coastal wetland in north Jiangsu[J]. Advances in Marine Science, 2008, 26(4):454-463.]