NEESR Payload: Determining the Added Hazard Potential of Tsunamis by Interaction with Ocean Swell and Wind Waves

NEESR 有效负载：通过与海浪和风浪的相互作用确定海啸的附加危险潜力

• 批准号: 0936579
• 负责人: James Kaihatu
• 金额: $ 10万
• 依托单位: Texas A&M Engineering Experiment Station
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-10-01 至 2012-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0936579&HistoricalAwards=false
• 关键词: NEESR; Payload; Determining; Added; Hazard

This award is an outcome of the NSF 09-524 program solicitation "George E. Brown Jr. Network for Earthquake Engineering Simulation (NEES) Research (NEESR)" competition and includes Texas A&M University (lead institution). This project will utilize the NEES equipment site at Oregon State University. The destructive power of a tsunami on the world's coastlines is unquestioned; ample evidence can be seen in photos of the aftermath of the 2004 Indian Ocean tsunami. The scale of destruction, however, has perhaps inadvertently justified the study of tsunamis in isolation from the other components of the ocean wave climate. The intellectual merit of the proposed work is the investigation of the tsunami phenomenon not as an isolated event, but as an inherent part of the world's ocean climate. For all their differences in destructive power, size, and generation, tsunamis and swell waves (which are always present on the ocean surface) are both gravity waves, and follow many of the same physical laws. Additionally, gravity waves of different frequencies exchange energy, which affects the shape of the front face of the wave and, in turn, the destructive power, travel time, and damage potential (structural damage and erosion) of the tsunami. Experiments will be conducted in the NEES Tsunami Wave Basin during summer 2010 to investigate this interaction. Both tsunamis and swell-band waves will be generated, in isolation and in combination, and their interaction determined by analysis of the measured velocities and free surface heights. Both standard (Fourier-based) and advanced (Hilbert-Huang transforms) methods will be used to determine the degree of the tsunami-swell interaction and the resulting changes on the evolution of the front face of the tsunami wave. These data will be used to determine the change in the tsunami front face characteristics due to the interaction with swell waves and further deduce the effect to its destructiveness.The broader impacts of the proposed activities concern the effect of the investigation on the profession's present understanding of the destructive power of the tsunami. This may in turn alter present policies for evacuation, construction, and public safety in coastal areas potentially subject to tsunami inundation. In addition, the research team will work with the NEES Tsunami Basin Facility's education and outreach personnel to enhance their programs for public education and engaging students into science and engineering. This will include live demonstrations of the added effect of swell wave-tsunami interaction on the destructiveness of an onrushing tsunami. Data from this project will be archived and made available to the public through the NEES data repository.

该奖项是NSF 09-524计划招标的结果“乔治·E·布朗（George E. Brown Jr. E. 该项目将利用俄勒冈州立大学的NEES设备网站。毫无疑问，海啸在世界海岸线上的破坏性力量是毫无疑问的。在2004年印度洋海啸的后果的照片中可以看到充足的证据。 然而，破坏的规模可能无意间证明了海啸的研究与海浪气候的其他组成部分隔离。 拟议工作的智力优点是对海啸现象的调查不是孤立的事件，而是世界海洋气候的固有部分。 尽管它们在破坏力，大小和产生方面的所有差异，海啸和膨胀波（始终存在于海面上）都是重力波，并且遵循许多相同的物理定律。 此外，不同频率的重力波交换能量，会影响波浪的前面形状，进而影响海啸的破坏力，旅行时间和破坏潜力（结构损害和侵蚀）。 在2010年夏季，将在NEES海啸波盆地进行实验，以研究这种相互作用。 海啸和膨胀波浪将被隔离和组合产生，并通过分析测得的速度和自由表面高度来确定它们的相互作用。 标准（基于傅立叶）和高级（Hilbert-huang变换）方法都将用于确定海啸的相互作用的程度，以及对海啸波的前面进化的结果变化。 这些数据将用于确定由于与膨胀波的相互作用并进一步推断出其破坏性的影响，海啸前面特征的变化。拟议活动的更广泛影响涉及调查对专业对目前对职业的影响的影响。海啸的破坏力。 反过来，这可能会改变沿海地区疏散，建设和公共安全的当前政策，可能会遭受海啸淹没。 此外，研究团队将与NEES海啸盆地设施的教育和外展人员合作，以增强其公共教育计划，并使学生参与科学和工程学。 这将包括膨胀波形相互作用对泛滥海啸破坏性的额外影响的实时演示。该项目的数据将通过NEES数据存储库进行存档并提供给公众。