| 珠江河口虎门的地貌动力学研究 |
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| 引用本文： | 唐兆民,倪培桐,任杰,吴超羽.珠江河口虎门的地貌动力学研究[J].热带海洋学报,2007,26(2):34-37. |
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| 作者姓名： | 唐兆民 倪培桐 任杰 吴超羽 |
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| 作者单位： | 1. 中山大学近岸海洋科学与技术研究中心,广东,广州,510275;嘉应学院化学系,广东,梅州,514015
2. 中山大学近岸海洋科学与技术研究中心,广东,广州,510275 |
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| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划) |
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| 摘 要： | 以野外现场调查、数值模拟和前人研究成果综合分析虎门的地貌动力学特征。因峡口上、下游水域开阔,涨落潮过程中发育着强大的双向不对称射流系统;由于峡口区流速最大,发育着冲刷深槽,而峡口的上、下游因流速降低,泥沙有规律地沉积,形成了涨潮三角洲与落潮三角洲堆积体,出现纵向上“马鞍”形断面特征和横向上“槽-脊-滩”的地貌特征,与其动力特征相适应。
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| 关 键 词： | 珠江河口 虎门 地貌动力学 双向不对称射流 |
| 文章编号： | 1009-5470（2007）02-0034-04 |
| 收稿时间： | 2006-04-20 |
| 修稿时间： | 2006-08-02 |
A study on morphodynamics of Humen in Zhujiang River estuary |
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| TANG Zhao-min,NI Pei-tong,RENjie,WU Chao-yu.A study on morphodynamics of Humen in Zhujiang River estuary[J].Journal of Tropical Oceanography,2007,26(2):34-37. |
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| Authors: | TANG Zhao-min NI Pei-tong RENjie WU Chao-yu |
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| Institution: | 1. Center for Coastal Ocean Science and Technology, Sun Yat-sen University, Guangzhou 510275, China; 2. Chemical Department of Jia Ying University, Meizhou 514015, China |
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| Abstract: | The study focuses on the morphodynamics of Humen outlet based on the hydrographic investigations,numerical simulations and historical research data.There exists a bi-direction asymmetry jet system caused by expanding upstream and downstream reaches of the rocky gorge.With the largest current velocity in the gorge and the smaller velocity in its upstream and downstream reaches,the riverbed is scoured into a trough in the gorge,while sediment aggrades regularly in both the upstream and the downstream reaches of the gorge and forms a deposit composed of a flood delta and an ebb delta.The deposit has a saddle-shaped section lengthways and a morphological characteristic of "trough-ridge-shoal" breadthways,accordant with its dynamic character. |
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| Keywords: | Zhujiang River estuary Humen morphodynamics bi-direction asymmetry jet current |
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