摘要
基于海表气压项改进的FVCOM(Finite-Volume Coastal Ocean Model)海洋模式,研发胶州湾高分辨率三维风暴潮漫滩数值模式(JS-FVCOM)。利用JS-FVCOM模式通过对天文潮、台风强度和径流3要素的不同组合,共设计了5个试验,分别进行风暴潮漫滩模拟实验。分析各试验结果得到如下结论:(1)随着台风最大风速的增加,风暴潮增水迅速增加,当综合水位超过防潮堤高程后增水速度明显减慢。海水淹没范围和淹没深度受综合水位超防潮堤高程时间影响明显。(2)在入海河流的河口区,当洪水位与高潮位相遇时,由于高潮位的顶托作用,洪水下泄不畅,造成综合水位上升明显,极易发生海水漫溢现象。JS-FVCOM的模拟结果清楚地再现了海水漫堤的淹没过程,可为紧急情况下的人员疏散提供科学的基础数据。
Based on FVCOM（Finite-Volume Coastal Ocean Model） ocean model with improved sea surface atmosphere item,the high resolution 3D storm surge and inundation numerical model（JS-FVCOM） was developed in the Jiaozhou Bay,which has a much finer resolution especially in the Dagu River Estuary,where the grid sizes equal to about 20 m.Besides,by adopting MPI calculating method,the calculating time can be further reduced,which can satisfy the need of practical operation.With different combinations of three essential factors such as astronomic tides,typhoon intensity and river flux,five numerical experimentations were designed to simulate the process of storm surge.The results show that 1）the storm surge increases rapidly with the increase of typhoon intensity,however,it starts to decrease significantly when the water level is higher than the dike;2）in tidal estuary,where the flooding encounters high tide,the floodplain will happen easily;3） the JS-FVCOM model can successfully simulate the process of the storm surge with reasonable flooded coverage and water level,which can provide scientific and credible simulation data for the emergency response work,such as risk assessment of storm surge and staff evacuation.
出处
《海洋科学》
CAS
CSCD
北大核心
2013年第2期118-125,共8页
Marine Sciences
基金
中国科学院海洋研究所海洋环流与波动重点实验室开放基金(KLOCAW0909
KLOCAW1206)
山东省海洋生态环境与防灾减灾重点实验室开放基金课题(2011016)
