Midway Tsunami Forecast Grids for MOST Model

The Midway 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: 60 arc-sec. B Grid Resolution: 6 arc-sec. C Grid Resolution: 2 arc-sec.

中途岛预报模型网格数据集仅提供用于基于海啸分裂法（Method of Splitting Tsunami，简称MOST）开展海啸淹没模拟的水深地形数据。MOST是一套数值模拟代码套件，可模拟海啸演化的三大核心过程：海啸生成、跨洋传播与陆地淹没。研究人员通过三套逐级嵌套的网格（A、B、C网格）完成海啸波场的数值传播计算，三者的分辨率从远海到近岸依次提升。近岸区域的细节被高精度解析，使得模型输出可直接与验潮站观测数据进行比对，并可用于估算海啸波到达时刻、波幅，以及模拟海啸在陆地上的淹没过程。A网格分辨率：60角秒；B网格分辨率：6角秒；C网格分辨率：2角秒。