摘要
地震影响场反映了地震动强度的空间分布或与空间相关的地震动场.在设计地震影响场时,首先需要设定地震.设定地震包括确定性和非确定性设定两种方法,用于估计区域或城市未来可能遭遇的地震危险.基于GIS的地震影响场的设计方法,是在选择确定性或非确定性设定地震的基础上,建立圆型或椭圆型地震烈度衰减关系、采用GIS技术勾画地震影响场.文中以我国东南地区常用的三个地震烈度衰减模型参数为例,介绍了基于GIS设计和勾画地震影响场的实现过程,主要应用在城市震害预测、地震应急和地震灾害损失快速评估中,有助于预防和减轻地震灾害损失.
The seismic influence field reflects the space distribution of seismic intensity or spacerelated seismic ground motion field. While designing the seismic influence field, the scenario earthquake must be taken into account first ,which includes deterministic and non-deterministic scenario. These two methods are used to estimate the possibility of future earthquake of certain region or urban. The GIS-based design method of seismic influence field is to establish circular or elliptic seismic intensity attenuation on the basis of the choice of deterministic and non-deterministic scenario as well as sketch the seismic influence field by using GIS technology. Taking three seismic intensity attenuation model parameters adopted by the southeast region of our country for example, the article introduced the process of realizing GIS-based design method of seismic influence field and sketching the seismic influence field,which was mainly applied in the prediction of urban earthquake disaster, earthquake emergency and rapid assessment of earthquake losses and was useful in preventing and mitigating losses incurred by earthquake.
出处
《应用基础与工程科学学报》
EI
CSCD
2008年第4期546-555,共10页
Journal of Basic Science and Engineering
基金
广州市科技攻关重大资助项目(2003Z1-D0011)
关键词
地震影响场
震害
烈度
GIS
seismic influence field
earthquake disaster
seismic intensity
GIS
