ShakeMap系统在福建地区的研究及应用

Abstract

ShakeMap系统是Wald et al.等人开发的一套开源、免费、准实时的烈度速报系统，能够在震后自动生成地震动峰值(PGA/PGV)等值图、仪器烈度分布图等产品，可以为震后各项应急救援的制定提供科学的参考依据。本文以该系统为基础，重新编译并应用于国内系统架构，并使用国内前人对地震动衰减和仪器烈度计算等方面的研究成果替换系统原有模块对其进行“改造”，期望获得真实反映出地震情况的产品。由于ShakeMap系统的产品内容为英文表述，使得国内大众对地震信息的获取和理解存在一定的困难，因而本文对ShakeMap系统的图形、网页和电子邮件通知等产品进行相应的本地化工作，以便于公众对信息的理解和地震信息的传播，提升系统的应用价值。最后，本文将“改造后”的ShakeMap系统应用于福建地区，并以2013年9月4日福建省莆田市仙游县M4.8级地震为例，说明改造后的系统在福建地区应用的可行性及局限性，期望为国内烈度速报系统的研究及应用提供一定的参考和借鉴。 ShakeMap developed by Wald et al. is an open source, free and real-time Rapid Seismic Intensity Reporting System can automatically generate products such as peak ground motion maps(peak ground acceleration map and peak ground velocity map), Intensity Instrumental distribution map and so on, which can give scientific basis for emergency rescue work after an earthquake. Based on the ShakeMap, we recompiled and installed it on the local operating system, and used the former research results on ground motion attenuation and instrumental intensity calculation founded by domestic scientists to replace the internal equations, to obtain the real ground motion products. Furthermore, the content of ShakeMap products are showed in English, which makes the products very difficult to receive and understand for the domestic public and very hard for information spreading, so we localized the content of maps, web pages and E-mail notifications to make those easy understanding and elevated the value of the system. In the end, we used the reformed ShakeMap in Fujian region and took the Xianyou earthquake that is M4.8 occurred in 4th, Sep-tember, 2013 in Fujian Province as an example to show the feasibility and limitation of the re-formed ShakeMap used in Fujian region. From the application we hope to give some hints and sup-ports for the development of the research on domestic Rapid Seismic Intensity Reporting System