GMT在地震应急产品中的应用——地应力图的绘制  

Application of GMT in Seismological Emergency Technology Products——Drawing of Stress Field Map

作　　者：汪园园 李盛乐[1] 刘珠妹[1] 郑思源 刘小利[1] Wang Yuanyuan;Li Shengle;Liu Zhumei;Zheng Siyuan;Liu Xiaoli(Institute of Seismology,China Earthquake Administration,Wuhan 430071,China)

机构地区：[1]中国地震局地震研究所,武汉430071

出　　处：《震灾防御技术》2020年第2期431-442,共12页Technology for Earthquake Disaster Prevention

摘　　要：针对目前地应力符号绘制困难、地应力图加工与发布依赖于人工编辑等问题,提出使用GMT自定义符号技术设计符合地学界通用符号标准的应力符号,给出利用GMT绘制地应力图的整体流程,最终实现了地应力数据矢量和应力状态信息的准确表达,并帮助用户简化地应力图绘制程序、提高信息报送的时效性。以龙门山区域应力分布为例,多方位对比国内外制图方法。结果表明,使用GMT自定义符号技术设计的应力符号不仅简化了地应力图的绘制程序,且表达出的应力数据信息更丰富。该技术已应用于《震后趋势判定技术系统》中,并在地震趋势会商工作中发挥重要作用。In view of the current difficulty of geo-stress symbol drawing, and the operation of geo-stress depends on manual editing, it is proposed to use the custom symbol technology of GMT to design stress symbols that meet the standards in the geosciences, and the whole process drawing stress map by GMT is given, and the accurate expression of stress data and stress regime information is realized. In this way, it helps users to simplify the procedures in drawing maps and improve the efficiency of information reporting. By studying the drawing of the stress distribution map of Longmen mountain area, we compare with domestic and foreign drawing methods in many ways. The results show that the stress symbols designed by custom symbol technology in this paper not only simplify the drawing process, but also enrich the stress data information. This paper has applied the results of the mapping to Post-earthquake trend determination technology system, which played an important role in seismic trend conference.

关 键 词：GMT软件 龙门山应力区 自定义符号技术 自动产出 

分 类 号：P315.9[天文地球—地震学] P285[天文地球—固体地球物理学]