Construction of Dynamic Soil Profile in Nagoya City Based on the Combination of Existing Soil Data and Microtremor Records Using Object-Oriented GIS

尽管地震破坏与土壤条件之间有很强的关系，但有关土壤动力特性的数据无论在质量还是数量上都是不够的。因此，建立一个综合和集成现有土壤数据的框架，并将其与地震观测数据和微动数据联合收割机结合起来，就变得非常重要。因此，在本研究项目中，我们建立了各种现有土壤数据的数据库，并新开发了面向对象的地理信息系统，其中名古屋市任意截面的土壤构型被内插，并使用新开发的回归方程估计的动态土壤模型评估土壤放大。此外，我们在名古屋市约300个地方进行了大量的微动测量。通过对地脉动记录的H/V谱分析，明确了名古屋市整个地区的卓越周期。在此基础上，利用上述地理信息系统对观测周期与计算周期之间的关系进行了检验，并对地震基岩以下的土壤剖面进行了反推。

In spite that there is a strong relationship between the earthquake damage and the soil condition, data related to dynamic properties of soil are not enough in the sense of quality and quantity. It becomes important to make a framework to synthesize and integrate the existing soil data and to combine them with the seismic observation data and microtremor data. Therefore, in this research project, we made databases of varieties of existing soil data and newly developed the object oriented geographical information system where the soil configuration in arbitrary section in Nagoya city is interpolated and the soil amplification is evaluated using dynamic soil model estimated by newly developed regression equation. Also, we made a lot of microtremor measurements at about three hundreds places in Nagoya city. By evaluating H/V spectra of microtremor records, we clarified the predominant periods in the whole area of Nagoya city. Based on the examination of the relationship between the observed periods and the calculated ones using above GIS, the soil profiles up to earthquake bedrock are inversely estimated.