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- W2010801054 abstract "In response to hazards posed by earthquake-induced tsunamis, the National Oceanographic and Atmospheric Administration developed a system for issuing timely warnings to coastal communities. This system, in part, involves matching data collected in real time from deep-ocean buoys to a database of precomputed geophysical models, each associated with a geographical location. Currently, trained operators must handpick models from the database using the epicenter of the earthquake as guidance, which can delay issuing of warnings. In this article, we introduce an automatic procedure to select models to improve the timing and accuracy of these warnings. This procedure uses an elastic-net-based penalized and constrained linear least-squares estimator in conjunction with a sweeping window. This window ensures that selected models are close spatially, which is desirable from geophysical considerations. We use the Akaike information criterion to settle on a particular window and to set the tuning parameters associated with the elastic net. Test data from the 2006 Kuril Islands and the devastating 2011 Japan tsunamis show that the automatic procedure yields model fits and verification equal to or better than those from a time-consuming hand-selected solution." @default.
- W2010801054 created "2016-06-24" @default.
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- W2010801054 date "2014-04-03" @default.
- W2010801054 modified "2023-10-14" @default.
- W2010801054 title "Automated Tsunami Source Modeling Using the Sweeping Window Positive Elastic Net" @default.
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- W2010801054 doi "https://doi.org/10.1080/01621459.2013.879062" @default.
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