地震图缩微化管理综述

Summing-up on documentation of seismogram microforms

７．０级以上的地震，其地震波将传播到地球的每一个角落并可记录下来，所以，地震图是研究地球内部构造的信息媒介。地震图缩微化有利于地震资料保护和交流，全球历史地震图缩微计划的实施，表明地球科学开展广泛合作的必要性。中美地震科学技术合作带动了我国地震图的缩微化，国际资料交换，使我国ＳＫ台网资料与美国ＷＷＳＳＮ接轨，并实现全球共享。我国的地震图缩微系统，设备配套、完善规范，每年缩微国内外大地震记录日约１００００张；中国地震图缩微库的建成已向全社会提供服务。

An earthquake with Ms≥7.0, its seismic waves will travel throughout the worle, and that may be recorded. Therefore seismograms are firsthand information researching the interior of the earth. Seismogram microforms conveniently suit for using and being kept in store. TheGlobal History Seismogram Microforms Plan in pratice points out necessity of wide cooperation in geoscience. The seism science and technology cooperation between PRC and USA puts seismo-gram micrographics in China into effect. By exchanging the data of SK Seismograph Network (SKSN) in China and the data of WWSSN,both may be used with advantage. The seismogram microphotography system in China has equipped with a perfect group of instruments and making standards, about ten thousand seismograms recored with earthquakes throughout the world have been made to microfilms by this system yearly. The seismogram microfilms database of China has formed with service to users.