Savannah, Georgia Tsunami Forecast Grids for MOST Model

The Savannah, Georgia Forecast Model Grids provides bathymetric data strictly for tsunami inundation modeling with the Method of Splitting Tsunami (MOST) model. MOST is a suite of numerical simulation codes capable of simulating three processes of tsunami evolution: generation, transoceanic propagation, and inundation of dry land. Tsunami waves are computationally propagated across a set of three nested grids (A, B, and C), each of which is successively finer in resolution, moving from offshore to onshore. Nearshore details are resolved to the point that model output can be directly compared with tide gauge observations and can provide estimates of wave arrival time, wave amplitude and simulation of wave inundation onto dry land. A Grid Resolution: 30 arc-sec in x direction. 35.3 arc-sec in y direction. B Grid Resolution: 10 arc-sec in the x direction. 11.7944 arc-sec in the y direction. C Grid Resolution: 2 arc-sec in the x direction. 2.36 arc-sec in the y direction

佐治亚州萨凡纳预报模型网格（Savannah, Georgia Forecast Model Grids）仅为采用裂波法（Method of Splitting Tsunami，MOST）模型开展的海啸淹没模拟提供水深数据。
裂波法模型是一套数值模拟代码集，可模拟海啸演化的三大过程：海啸生成、跨洋传播以及向陆地的淹没推进。
计算过程中，海啸波将在三层嵌套网格（A、B、C）上完成传播，从远海至近岸方向，各网格的分辨率依次提升，精度逐步提高。
该模型对近岸细节的解析精度足以让模型输出结果直接与验潮站观测数据进行比对，同时可估算海啸波的到达时刻、波幅，并模拟海啸向陆地的淹没过程。
A网格分辨率：x方向为30角秒，y方向为35.3角秒。
B网格分辨率：x方向为10角秒，y方向为11.7944角秒。
C网格分辨率：x方向为2角秒，y方向为2.36角秒。