摘要
1/25万区域地震构造图是城市活断层探测工作的成果图件之一。目前各城市的1/25万区域地震构造图多是在已有的1/20万地质图的基础上编绘出来的,由于目前可收集到的纸制1/20万地质图均是北京54坐标系统下的图件,而《中国地震活动断层探测技术系统技术规程》要求的1/25万区域地震构造图是西安80坐标系下的图件。文中介绍了用ArcGIS软件实现利用1/20万地质图编绘1/25万区域地震构造图的方法。
1 ： 250,000 regional seismotectonic map is one of graphic documents achieved in the urban active fault survey project. At present, the 1 ： 250,000 regional seismotectonic maps of various cities are drawn mostly basing on the existing 1：200, 000 geological maps. The available paper-made 1 ： 200, 000 geological maps are the graphic documents under Beijing 54 Coordinates Systems. However, according to Stipulation on Technical System for China Earthquake Active Fault Surveying issued by China Earthquake Administration, the 1 ： 250, 000 regional seismotectonic maps are the graphic documents under Xi＇an 80 Coordinate Systems.
This article introduces the basic concepts of coordinates systems and the map projection and proposes explicitly that when scanning and digitizing paper geological map, the coordinate＇s projection parameters indicated in the paper geological map shall be taken for setting up projection information. The conversion of screen coordinates to map coordinates is realized through space coordinate registration, and by projection conversion, the Beijing 54 Coordinates System is converted to Xi＇an 80 Coordinates System. Finally, with the aid of ArcGIS software, the 1 ： 250, 000 regional seismotectonic maps are compiled based on 1 ： 200, 000 geologic maps.
出处
《地震地质》
EI
CSCD
北大核心
2007年第2期412-417,共6页
Seismology and Geology
基金
国家发展与改革委员会发改投资"城市活断层试验探测"项目(20041138)资助
作者简介
张兰凤，女，1956年出生，实验师，主要从事GIS制图、GIS数据库建设等工作，电话：010—62009416。
通讯作者：于贵华，女，1966年出生，主要从事GIS在活动构造中的应用等方面的研究，电话：010-62009136．E-mail：ygh0060@vip．sina．com。
