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Implementing ShakeMap for the New Madrid Seismic Zone

机译:为新马德里地震带实施ShakeMap

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Immediately after a damaging earthquake, emergency managers rapidly seek answers to many important questions: Where is die worst and/or least damage? What equipment and personnel must be mobilized and to what extent? ShakeMap was developed by the U.S. Geological Survey Earthquake Hazards Program to assist in answering these questions by producing near-real-time maps of ground motion and shakingintensity following significant earthquakes (Wild et al. 2004). To produce maps, ShakeMap mimics a dense array of seismometers by using an attenuation relationship to model peak ground motions at virtual or "phantom" stations between existing seismic stations. The modeled data are corrected for site amplification (Borcherdt 1994) and used to produce an instrumental intensity map, a hybrid Modified Mercalli map based on instrumental recording (Wald etal. 1999a). ShakeMap software, implemented predominantly in the Western United States (Northern and Southern California; Salt Lake City, Utah; and Seattle, Washington), requires a degree of regional customization to ensure accuracy of the maps. We report here on the Eastern United States software customization required for implementation of ShakeMap in the New Madrid Seismic Zone (NMSZ) and verification of the resulting maps.
机译:破坏性地震发生后,紧急应变人员立即寻求许多重要问题的答案:最坏和/或损失最少的地方在哪里?必须动员什么设备和人员,程度如何? ShakeMap是由美国地质调查局地震灾害计划开发的,旨在通过在发生重大地震后生成近实时的地面运动和震动强度地图来回答这些问题(Wild等,2004)。为了生成地图,ShakeMap通过使用衰减关系模拟现有地震台之间虚拟或“幻像”台站的峰值地面运动,模拟了密集的地震仪阵列。对模型化的数据进行位点扩增校正(Borcherdt,1994年),并用于生成仪器强度图,这是一种基于仪器记录的混合改良Mercalli图(Wald等,1999a)。 ShakeMap软件主要在美国西部(加利福尼亚州北部和南部;犹他州盐湖城和华盛顿西雅图)实施,需要一定程度的区域自定义以确保地图的准确性。我们在这里报告在新马德里地震区(NMSZ)中实施ShakeMap所需的美国东部软件定制以及所生成地图的验证。

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