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热带海洋学报 ›› 2011, Vol. 30 ›› Issue (2): 123-130.doi: 10.11978/j.issn.1009-5470.2011.02.123cstr: 32234.14.j.issn.1009-5470.2011.02.123

• 海洋地貌学 • 上一篇    下一篇

海南博鳌海域的沉积物输运趋势与沉积速率

张亮1, 贾建军2, 高建华1, 龚文平3, 汪亚平1   

  1. 1. 南京大学海岸与海岛开发教育部重点实验室, 地理与海洋科学学院, 江苏 南京 210093; 2. 国家海洋局海底科学重点实验室, 国家海洋局第二海洋研究所, 浙江 杭州 310012; 3. 中山大学海洋学院, 广东 广州 510275
  • 收稿日期:2010-05-29 修回日期:2010-07-18 出版日期:2011-05-06 发布日期:2011-05-04
  • 通讯作者: 贾建军, 男, 研究员, 主要从事河口海岸沉积动力学研究。E-mail: jjjia@sio.org.cn
  • 作者简介:张亮(1983—), 男, 山东省德州市人, 硕士研究生, 主要从事海洋沉积学研究。E-mail: zhangliang1698@126.com
  • 基金资助:

    国家自然科学基金项目(40776049); 国家“908”项目(HN908-02-05、908-02-01-08)

Sediment transport and deposition rate along the Boao coast, Hainan Island

ZHANG Liang1, JIA Jian-jun2, GAO Jian-hua1, GONG Wen-ping3, WANG Ya-ping1   

  1. 1. Key Laboratory of Coast and Island Development, School of Geographic and Oceanographic Sciences, Nanjing University, Nan-jing 210093, China; 2. Laboratory of Submarine Geosciences, SOA, Second Institute of Oceanography, SOA, Hangzhou 310012, China; 3. School of Marine Science, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2010-05-29 Revised:2010-07-18 Online:2011-05-06 Published:2011-05-04
  • Contact: 贾建军, 男, 研究员, 主要从事河口海岸沉积动力学研究。E-mail: jjjia@sio.org.cn
  • About author:张亮(1983—), 男, 山东省德州市人, 硕士研究生, 主要从事海洋沉积学研究。E-mail: zhangliang1698@126.com
  • Supported by:

    国家自然科学基金项目(40776049); 国家“908”项目(HN908-02-05、908-02-01-08)

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被引次数

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摘要：

2001年与2009年分别在博鳌海域进行表层沉积物和柱状沉积物取样,通过粒度分析和计算获取沉积物粒度参数, 借助放射性同位素测年估算沉积速率。结果表明, 与2001年相比, 目前万泉河口、沙美内海有细化趋势(由粗砂变为细砂), 玉带滩北部沉积物变粗, 而玉带滩南部变化不大。此外, 目前沙美内海北部沉积物输运趋势和2001年正好相反, 南部则基本一致。万泉河口北侧沙嘴由淤积变为侵蚀, 与实地调查一致。玉带滩北部沉积物沿岸向南、向外海输运, 原处于侵蚀状态的南部岸段现已处于稳定阶段, 这与2001年和2009年两个时段的岸线对比结果吻合。210Pb测年结果发现, 潟湖内的沉积速率约为2mm•a-1, 和2001年的测年结果基本一致。

关键词: 沉积物粒度参数, 粒径趋势分析, 沉积速率, 博鳌

Abstract:

Surface and core sediment samples were collected at the Boao Estuary in 2001 and 2009. On the basis of grain size analysis and 210Pb dating, grain size parameters and sediment transport pathway were acquired; sedimentation rates were es-timated by a radioisotope method. The results show that the sediments in the estuary of the Wanquan River, Shameineihai Lagoon, and the northern Yudai sand barrier indicate a trend of becoming finer (from coarse sand to finer sand) from 2001 to 2009, while in the southern Yudai sand barrier keeps the sand condition almost unchanged. In addition, the sediment transport trend of the northern Shameineihai Lagoon was reversed to what was in 2001, while in the southern part the condition was almost unchanged. The northern bank of the Wanquan River changed from siltation into erosion, which was identified by the fieldwork survey in 2009. The sediment in the northern Yudai sand barrier currently transported southward along the shore, and then moved offshore to the open sea. The southern beaches are becoming stable from previous erosion, which is consistent to the coastline comparison of 2001 and 2009. The deposition rate at the Shameineihai Lagoon was 2 mm/yr on average, which was similar to the results in 2001.

Key words: sediment grain size parameter, grain size trend analysis, sedimentation rate, Boao