| 均衡态:动力-沉积-地貌系统的跨尺度联系 |
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| 引用本文： | 李炎.均衡态:动力-沉积-地貌系统的跨尺度联系[J].海洋学报,2018,40(7):38-42. |
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| 作者姓名： | 李炎 |
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| 作者单位： | 国家海洋局第二海洋研究所 国家海岛开发与管理研究中心, 浙江 杭州 310012;厦门大学 福建省海陆界面生态环境重点实验室, 福建 厦门 361005 |
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| 基金项目： | 国家自然科学基金（41576095）。 |
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| 摘 要： | 潮汐汊道P-A关系、岸线轮廓、浅海沙波剖面轮廓等3个海洋动力地貌学案例，属于能够同时满足"沿程能耗率处处相等，输沙率沿程递变处处相等，沉积速率处处相等"规律的动力-沉积-地貌系统均衡态。这种在流体力学、沉积动力学和动力地貌学时空尺度跨度很大的交集中涌现的均衡态，为引导出动力-沉积-地貌系统跨尺度联系，实现动力-沉积-地貌系统的跨尺度模拟，留下宝贵的理论研究与应用检验窗口。
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| 关 键 词： | 潮汐汊道 平衡海滩 浅海沙波 均衡态 |
| 收稿时间： | 2017/7/3 0:00:00 |
| 修稿时间： | 2017/12/11 0:00:00 |
The equilibrium status: a cross-scale linkage for hydrodynamics, sedimentology, and geomorphology |
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| Li Yan.The equilibrium status: a cross-scale linkage for hydrodynamics, sedimentology, and geomorphology[J].Acta Oceanologica Sinica (in Chinese),2018,40(7):38-42. |
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| Authors: | Li Yan |
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| Institution: | State Research Centre for Island Exploitation and Management, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361005, China |
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| Abstract: | The P-A relationships of tidal inlets, the plan forms of shoreline, and the forms of offshore sand waves are analyzed as three coastal morphodynamic cases for the hydrodynamic, sedimentological and geomorphic systems. Along their equilibrium profiles, equal energy dissipation rate, equal increment in sediment transport rate, and equal sedimentary rate are arise together within large ranges of spatial and temporal scale. Such grading organised equilibrium statuses in the mixing fields among fluid mechanics, sediment dynamics, and morphodynamics, have been opened some valuable and clearly windows, research and practice, leading to cross-scale linkage and cross-scale modelling for the complex hydrodynamic, sedimentological and geomorphic systems. |
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| Keywords: | tidal inlet equilibrium beach sand wave equilibrium status |
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