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首页> 外文期刊>Journal of oceanography >HF Radar Detection of Tsunamis
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HF Radar Detection of Tsunamis

机译:海啸的高频雷达检测

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This paper demonstrates that HF radar systems can be used to detect tsunamis well before their arrival at a coastline. We solve the equations of motion and continuity on the ocean surface using models to simulate the signals produced by a tsunami approaching the east U.S. coast. Height and velocity profiles are derived along with expressions for the radar-observed current velocities in terms of bathymetry and tsunami height and period. Simulated tsunami-generated radial current velocities are superimposed on typical maps of radial velocity generated by a Rutgers University HF radar system. A detection parameter is defined and plotted to quantify the progress of the tsunami, which is shown to be detectable well before its arrival at the coast. We describe observations/warnings that would have been provided by HF radar systems at locations in the path of the 2004 Indian Ocean tsunami.
机译:本文证明,HF雷达系统可以在海啸到达海岸线之前很好地用于检测。我们使用模型来模拟海啸逼近美国东部沿海地区产生的信号,从而解决海洋表面的运动和连续性方程。高度和速度分布以及测深,海啸高度和周期方面的雷达观测到的当前速度的表达式被导出。模拟的海啸产生的径向电流速度叠加在罗格斯大学(Rutgers University)HF雷达系统产生的典型径向速度图上​​。定义并绘制检测参数以量化海啸的进展,海啸的进展证明在海啸到达海岸之前就可以检测到。我们描述了由HF雷达系统在2004年印度洋海啸路径上的位置所提供的观察/警告。

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