SEISMOLOGY AND GEOLOGY ›› 2013, Vol. 35 ›› Issue (3): 565-575.DOI: 10.3969/j.issn.0253-4967.2013.03.010

• CONTENTS • Previous Articles     Next Articles

3D VISUALIZATION AND MODELING OF SPATIAL RELATIONSHIP BETWEEN EARTHQUAKES AND ACTIVE FAULTS

LI Zi-hong1,2,3, LIU Hong-fu1, ZHANG Min4, ZENG Jin-yan2,3   

  1. 1. Taiyuan University of Technology, Taiyuan 030024, China;
    2. Earthquake Administration of Shanxi Province, Taiyuan 030021, China;
    3. National Continental Rift Valley Dynamics Observatory of Taiyuan, Taiyuan 030025, China;
    4. Beijing Geological Mineral Exploration Development Corporation, Beijing 100195, China
  • Received:2012-05-13 Revised:2013-07-07 Online:2013-09-30 Published:2013-10-12

地震与活动断裂空间关系的三维可视化建模

李自红1,2,3, 刘鸿福1, 张敏4, 曾金艳2,3   

  1. 1. 太原理工大学, 太原 030024;
    2. 山西省地震局, 太原 030021;
    3. 太原大陆裂谷动力学国家野外科学观测研究站, 太原 030025;
    4. 北京市地质矿产勘查开发总公司, 北京 100195
  • 通讯作者: 刘鸿福,教授,博士生导师,E-mail:lhfcxp@163.com
  • 作者简介:李自红,男,1969年生,1993年毕业于中南工业大学勘查地球物理专业,太原理工大学在读博士研究生,高级工程师,现主要研究方向为活动构造、地震工程和地震预测,电话:0351-5610548,E-mail:sxsdzjgcy@163.com。
  • 基金资助:

    中国地震局地震行业科研专项 "中国地震活断层探查: 华北构造区"(200908001)和地震行业科研专项 "中国综合地球物理场观测: 鄂尔多斯地块周缘地区"(20120800914)共同资助。

Abstract:

Nowadays,as the information is highly advanced,the visualization in scientific computing(VISC)is developing rapidly and the three-dimensional Geographic Information System(3D GIS)also becomes one of the hot topics of GIS research. The 3D geological modeling,which is closely related to the VISC and 3D GIS,has drawn more and more attention of domestic and foreign experts and scholars; it has been highly desirable to resolve the complex geological problems in a 3D space.In view of the above research topic and combining the project of Taiyuan Active fault Survey and Seismic Risk Assessment,the 3D space database of shallow seismic survey is established based on the detailed analysis and sorting of a large amount of exploration data in this paper. The algorithm of the 3D geological model is also designed by use of ArcGIS's powerful 3D displaying function,and then the program is developed using the AOVAB.Based on the 3D geological modeling technology which combines the VISC and 3D GIS,the 3D geological visualization model is developed for the Quaternary stratigraphic sections and fault profiles within the Taiyuan active fault survey area,and the 3D buffer model is also tried to be established under the ArcGIS environment in view of the 3D fault model. The statistical analysis of active fault data and seismic data is carried out,and the relationship between active faults and spatial distribution of earthquakes is studied.This study accomplished the 3D geological model for the Quaternary stratigraphic sections,fault profiles and 3D space buffer within the Taiyuan active fault survey area,and carried out the analysis of the relationship between faults and spatial distribution of historic earthquakes based on this model. These results have significance for theoretical and scientific studies,and can provide reference to active faults survey in other cities in the future.

Key words: active faults, ArcGIS, 3D fault model, 3D space of the buffer, 3D analysis

摘要:

在回顾国内学者利用2D GIS空间分析功能研究地震与活动断裂关系的基础上,认为利用3D GIS更能准确地分析地震与活动断裂之间的三维空间关系。采用中国地震活动断层探测技术系统设计的数据结构,在ArcGIS下构建了三维断层模型,尝试性地提出了基于三维断层模型的三维空间缓冲区模型; 并利用向量判别法实现了三维缓冲区的空间分析,进而实现了地震与活动断裂三维空间关系的分析方法,基于该模型对太原市区内主要断裂与地震的空间分布关系进行了初步定量分析研究。

关键词: 活动断裂, ArcGIS, 三维断层模型, 三维空间缓冲区, 三维空间分析

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