| 江苏北部潮滩沉积物中~(137)Cs和~(210)pb的分布特征(英文) |
| |
| 引用本文： | 刘志勇,潘少明,刘旭英,高建华. 江苏北部潮滩沉积物中~(137)Cs和~(210)pb的分布特征(英文)[J]. 地理学报(英文版), 2010, 20(1): 91-108. DOI: 10.1007/s11442-010-0091-3 |
| |
| 作者姓名： | 刘志勇 潘少明 刘旭英 高建华 |
| |
| 作者单位： | |
| |
| 基金项目： | No.2002CB412401，Scientific Research Foundation of Graduate School of Nanjing University，National Natural Science Foundation of China |
| |
| 摘 要： |
|
| 收稿时间： | 2008-10-29 |
Distribution of ~(137)Cs and ~(210)Pb in sediments of tidal flats in north Jiangsu Province |
| |
| LIU Zhiyong,PAN Shaoming,LIU Xuying,GAO Jianhua. Distribution of ~(137)Cs and ~(210)Pb in sediments of tidal flats in north Jiangsu Province[J]. Journal of Geographical Sciences, 2010, 20(1): 91-108. DOI: 10.1007/s11442-010-0091-3 |
| |
| Authors: | LIU Zhiyong PAN Shaoming LIU Xuying GAO Jianhua |
| |
| Affiliation: | Ministry of Education Key laboratory of Coastal and Island Development, Nanjing University, Nanjing 210093, China |
| |
| Abstract: | Seven cores were collected from different sediment zones of tidal flats at Xin-yanggang in north Jiangsu province in August 2007. Sediment grain-size distribution and radioisotopes of ~(137)Cs and ~(210)Pb analysis were carried out for these cores. Sediment rates of the cores and radioisotopes distribution in surface sediment in different zones of the tidal flat were calculated from the ~(137)Cs and ~(210)Pb activities in sediments cores. The results indicated that each tidal zone had experienced different evolution phases, hydrological dynamics in the tidal flats made the grain-size of the surface sediment change gradually. ~(137)Cs and ~(210)Pb activities on the superficial layer of the cores varied spatially and the reason was discussed. On tidal flats, the fluctuation of ~(137)Cs and ~(210)Pb activities in the cores reflected the special sedimentary characteristics. Vegetation affects the grain-size distribution and the vertical profiles of ~(137)Cs and ~(210)Pb in the upper depths. ~(137)Cs and ~(210)Pb chronology got the comparable average sediment rates on the tidal flat. The characteristics of ~(137)Cs and ~(210)Pb in the cores reflected various depositional dynamical environments in different tidal zones and gave information on the different evolvement phases of the tidal zones. Based on the information of grain-size distribution, texture of the cores, sediment rates and topography, the evolution lines of the tidal flat were reconstructed. |
| |
| Keywords: | tidal flats grain-size information ~(137)Cs and ~(210)Pb dating sediment rates north Jiangsu province |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《地理学报(英文版)》浏览原始摘要信息 |
|
点击此处可从《地理学报(英文版)》下载全文 |
