海南博鳌海域的沉积物输运趋势与沉积速率

doi:10.11978/j.issn.1009-5470.2011.02.123

Journal of Tropical Oceanography ›› 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

• Marine geomorphology • Previous Articles Next Articles

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. 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 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)

Abstract

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

ZHANG Liang,JIA Jian-jun,GAO Jian-hua,GONG Wen-ping,WANG Ya-ping. Sediment transport and deposition rate along the Boao coast, Hainan Island[J].Journal of Tropical Oceanography, 2011, 30(2): 123-130.

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

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