Field Survey of the February 17, 1996 Irian Jaya Tsunami

1996 年 2 月 17 日伊里安查亚海啸的实地调查

• 批准号: 9633792
• 负责人: Costas Synolakis
• 金额: $ 1.35万
• 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: 1996-05-01 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9633792&HistoricalAwards=false
• 关键词: Field; Survey; February; 17; 1996

9633792 Synolakis This action is to support the participation of U.S. researchers in the international effort to learn from the February 17, 1996 Irian Jaya earthquake and tsunami, in order to gather and study perishable inundation data. The participants will join the International Tsunami Survey Team which has surveyed six of the 1992-1994 worldwide events, resulting in a small but valuable database of inundation data. On February 17, 1996, a strong earthquake shook Biak Island off Irian Jaya in East Indonesia. The earthquake-generated tsunami waves propagated to Japan, where the measured height of the attenuated waves was approximately one meter, with a reported wave height on reaching the west coast of the United States of up to 7cm. The US participants will: (1) measure maximum penetration points (maximum runup) at different locations, (2) attempt to estimate tsunami inundation velocities, and (3) interview eyewitnesses to determine the nature and number of runup waves observed. Runup data are highly perishable, given that reconstruction efforts start a few days, if not hours, after the event. Even in remote areas, storms and wind-generated waves may alter the topography or scatter the debris line which is used for estimating the location of the penetration points. It is for this reason that travel to the site must occur as soon as possible after the event to document the coastal effects of a damaging tsunami. Accurate information of the runup height distribution will allow a better definition of the tectonic source motion, which in turn will permit the calibration of a source model for future use. It is anticipated that the team will be able to obtain profile data in the survey which will be used both to augment the modeling, and also to evaluate how important beach topography is for first- order predictions. ***

9633792 Synolakis这项行动是为了支持美国研究人员参与国际努力，从1996年2月17日伊里安查亚地震和海啸中吸取教训，以收集和研究易腐烂的洪水数据。 参加者将加入国际海啸调查队，该调查队调查了1992-1994年世界范围内发生的六次海啸事件，从而建立了一个规模虽小但很有价值的水灾数据库。 1996年2月17日，印度尼西亚东部伊里安查亚附近的比亚克岛发生强烈地震。 地震产生的海啸波传播到日本，在那里测得的衰减波高度约为1米，据报道到达美国西海岸的波高高达7厘米。 美国与会者将：（1）测量不同位置的最大穿透点（最大爬升），（2）尝试估计海啸淹没速度，（3）采访目击者以确定观察到的爬升波的性质和数量。 由于重建工作在事件发生后几天甚至几小时内就开始了，因此，启动数据非常容易损坏。 即使在偏远地区，风暴和风产生的波浪也可能改变地形或使用于估计穿透点位置的碎片线散开。 正是由于这个原因，必须在事件发生后尽快前往现场，以记录破坏性海啸对海岸的影响。 助跑高度分布的准确信息将允许更好地定义的构造源运动，这反过来又将允许源模型的校准，以供将来使用。 预计该小组将能够在调查中获得剖面数据，这些数据将用于增强建模，并评估海滩地形对一阶预测的重要性。 ***