基于GIS和FVCOM数值模型的近海岸水动力计算——以渤海为例  

Offshore Hydrodynamic Calculation Based on GIS and FVCOM Numerical Model: A Case Study of Bohai Sea

作　　者：赵晓东[1] 王亮[2] 沈永明[2] 

机构地区：[1]大连大学院士创业园中日地层环境科学研究中心,大连116622 [2]大连理工大学海岸和近海工程国家重点实验室,大连116023

出　　处：《地理科学进展》2011年第9期1152-1158,共7页Progress in Geography

基　　金：国家自然科学基金重点项目(50839001)

摘　　要：GIS以其强大的空间数据存储、处理和分析功能已经广泛地应用于众多工程模型的建模和计算中。FV-COM模型对复杂地形岸界适应性好,同时又可以更好地保证质量的守恒性,是理想的近海岸水动力计算模型。以渤海的水动力计算为例,基于两者的耦合,提出了GIS支持下的近海岸水动力模拟计算前处理的空间数据管理、自动剖分网格和数据自动提取的方法,提高了建模、调试和前处理的效率。后处理使用了NetCDF和Geodatabase空间数据库格式存储多维计算结果数据,对渤海潮流和温盐的计算结果进行了验证和分析。计算结果表明,GIS耦合模型的使用能够方便模型数据的处理,大大提高模型的建模效率,清晰和生动地表达计算结果,反映了模拟研究区域的物理特性,对近海环境管理决策提供了数据和理论的决策支持。GIS, with its powerful spatial data storage, processing and analysis functions, has been widely used in many engineering modelling and calculations. FVCOM model is an ideal model for offshore hydrodynamic calculations, providing a better adaptability in the coastal region with complex geometry and ensuring the conservation of momentum, mass, and energy in a unit volume. A case study of Bohai Sea was conducted based on GIS coupling with FVCOM model, which provided a pre-processing of spatial data management, automatic mesh generation and data extraction with a result of improving the efficiency of modeling, debugging and pre-processing. In the post-processing, the NetCDF and Geodatabase spatial database format were used to store multi-dimensional calculation data. The calculation results of the tide and salinity of the Bohai Sea were also verified and analyzed. The results of analyses show that the GIS coupled model can facilitate data handling and greatly improve the modelling efficiency with clear and vivid visualization of the results, reflecting the physical characteristics of the study area, and providing decision-making support of data and theory for coastal environmental management.

关 键 词：水动力计算 GIS FVCOM 渤海 

分 类 号：P208[天文地球—地图制图学与地理信息工程] P753[天文地球—测绘科学与技术]