Storm surges prediction in terms of a typhoon model which includes effects of land topography and roughness

根据台风模型进行风暴潮预测，其中包括陆地地形和粗糙度的影响

基本信息

批准号：
08650602
负责人：
YAMASHITA Takao
金额：
$ 1.34万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650602/
关键词：
Storm Surges Typhoon Models Numerical Prediction Wind Field on the Sea Sea Surface Stresses MASCON Model モデル台風波浪

项目摘要

Storm surge simulation in small closed basins surrounded by mountains such as Osaka Bay is difficult-especially in the wind field prediction or simulation, which is affected by complex land topography. Fujita's typhoon model has been traditionally employed for the estimation of typhoon fields in Japan.Yoshizumi (1968) proposed a typhoon wind field model which describes the lower-layr winds in a moving typhoon with consideration of surface friction. It is employed here to estimate the typhoon wind field taking into account the effect of friction. As the wind field described by Yoshizumi's model does not include the effect of land topography, we introduce the 'MASCON' (mass conservation) model to take into account the effects of deceleration and acceleration of wind velocity due to land topography, in this research.This is a new model of typhoon wind field which is developed here by combining the Yoshizumi's and MASCON models. The pressure field is formulated by Schloemer's equation which assumes a symmetric pressure pattern.A study on advancement in numerical models for storm surge prediction was carried out by means of numerical simulations of storm surges in which new model of typhoon wind field (MASCON-Y Model) was employed. Its validity was examined by hindcast of storm surges caused by Typhoons 9426,6523 and 6118 in Osaka Bay, the Isewan Typhoon in Ise Bay.

在大阪湾（Osaka Bay）包围的小型封闭盆地中的风暴潮模拟很难 - 尤其是在风场预测或模拟中，受复杂的土地地形影响。传统上，藤田的台风模型用于估算日本的台风田。考虑到摩擦的影响，它被用来估算台风风场。正如Yoshizumi的模型所描述的风场不包括土地地形的效果一样，我们介绍了“ Mascon”（大众保护）模型，以考虑到由于土地地形而引起的风速减速和加速度的效果，在这项研究中。这是在此处通过Yoshizizumi和Mascon的模型结合的Typhoon Wind Field的新模型。压力场是由Schloemer's方程提出的，该方程假设了对称压力模式。对风暴浪涌预测的数值模型的进步研究是通过风暴潮的数值模拟进行的，其中采用了新的台风风场（Mascon-Y模型）。由Ise Bay的Isewan Typhoon在大阪湾的台风9426,6523和6118引起的风暴潮的后广播检查了其有效性。