The Mexican National Seismological Service (SSN) was founded on 5 September 1910, in response to commitments made by Mexico to the International Association of Seismology in 1903. The first seismic instruments installed in 1904 were a Bosch–Omori seismograph and a Palmieri seismoscope. The SSN was formally inaugurated on 5 September 1910, a few days before the revolution broke out; a political struggle that lasted over two decades. The SSN was inaugurated with a central station in Tacubaya, Mexico City, and two secondary stations. Wiechert seismographs were selected by the SSN for its budding network. Despite the adverse economic and political situation, the SSN managed to grow and install more stations during the turmoil. Besides the installation of new seismic stations and reporting the location and macroseismic data of earthquakes in Mexico, the SSN staff produced remarkable reports of important earthquakes that occurred in those early years. Notable among these are the detailed reports on the 19 November 1912 and 4 January 1920 earthquakes on the Trans‐Mexican volcanic belt. These reports have shaped the estimations of seismic hazard in this highly populated region of Mexico. In the first aftershock studies reported, the SSN took Wiechert instruments to the epicentral areas of a large subduction earthquake in 1907 and to the city of Xalapa, in the vicinity of the 1920 crustal earthquake. With foresight in those early years of seismology, the SSN scientists correctly attributed the 1912 earthquake to a local active fault. The seismograms collected in 1920 confirmed that it was a crustal earthquake and not an in‐slab event. Lack of funding and official interest did not permit the modernization of the SSN for many decades. National interest in the Service was boosted by the 19 September 1985 destructive earthquake.

中文翻译：

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墨西哥国家地震局成立110周年：对其早期贡献的描述

墨西哥国家地震局（SSN）成立于1910年9月5日，以响应墨西哥在1903年对国际地震学协会的承诺。1904年安装的第一台地震仪器是Bosch-Omori地震仪和Palmieri地震仪。SSN于革命爆发前几天的1910年9月5日正式成立。持续了二十多年的政治斗争。SSN在墨西哥城Tacubaya设有一个中央车站和两个二级车站。SSN选择了Wiechert地震仪作为其萌芽网络。尽管出现了不利的经济和政治形势，SSN在动荡期间仍设法增长并安装了更多的电台。除了安装新的地震台站并报告墨西哥地震的位置和宏观地震数据外，SSN的工作人员就早期发生的重要地震提供了惊人的报道。其中值得注意的是有关1912年11月19日和1920年1月4日跨墨西哥火山带地震的详细报告。这些报告影响了墨西哥这个人口稠密地区的地震危险性估计。在报道的第一次余震研究中，SSN将Wiechert仪器带到1907年大俯冲地震的震中区和1920地壳地震附近的哈拉帕市。SSN科学家怀着对地震早期的远见卓识，正确地将1912年地震归因于局部活动断层。1920年收集的地震图证实这是地壳地震，而不是板内事件。数十年来，缺乏资金和官方利益使得SSN不能实现现代化。1985年9月19日的破坏性地震激发了国家对该部门的兴趣。