Doctoral Dissertation Research: The Generation of Cusps on Gravel Beaches: The Evaluation of Edge Waves and Self-Organization Hypotheses

博士论文研究：砾石滩上尖点的产生：边缘波和自组织假设的评估

• 批准号: 9628727
• 负责人: Douglas Sherman
• 金额: $ 0.94万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-01 至 1998-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9628727&HistoricalAwards=false
• 关键词: Doctoral; Dissertation; Research; Generation; Cusps

Wang, Jinkang U. of Southern California The presence or absence of beach cusps in a coastal environment may be considered as one diagnostic of the nearshore morphodynamic regime. This project will explore mechanisms of beach cusp formation on gravel beaches through the empirical evaluation of competing hypotheses. These are the standing edge-wave model and the system self organization model. For more than 20 years most coastal scientists have accepted the edge-wave theory. Recent analyses suggest that self organization may provide a better explanation. The research is designed to obtain the data necessary to discriminate between the two mechanisms. Field investigation will be carried out at Malin Head, Ireland, where cusps are common and active along a stretch of gravel shoreline, and condition favor a resolution of this conflict. Evaluations will require measurement and comparison of oscillatory currents and water surface fluctuations at several points adjacent to the foreshore, repetitive grid profiling, sediment sampling and measurement of swamp uprush. Through these efforts the controversy over the origins of beach cusps can be resolved. The research will expand our knowledge of several prominent beach morphology mechanisms.

南加州的王国王，在沿海环境中存在或不存在海滩尖头，可能被认为是近海形态动力学制度的诊断。 该项目将通过对竞争假设的经验评估在砾石海滩上探索海滩风口峰形成的机制。 这些是站立的边缘模型和系统自组织模型。 20多年来，大多数沿海科学家都接受了边缘理论。 最近的分析表明，自我组织可以提供更好的解释。 该研究旨在获得区分两种机制所需的数据。 现场调查将在爱尔兰的Malin Head进行，那里的尖齿在一段碎石海岸线上很普遍且活跃，条件有利于解决这一冲突的解决方案。 评估将需要测量和比较邻近近海，重复的网格分析，沉积物采样和测量沼泽Uprush的振荡电流和水面波动。 通过这些努力，可以解决关于海滩尖头的起源的争议。 这项研究将扩大我们对几种著名海滩形态机制的了解。