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一次破坏性的或明显有感的地震发生以后,人们首先关心的是这次地震发生在哪里?震级有多大?要回答这个问题必须开展地震速报工作。在短时间内对已发生地震的参数(发震时刻、位置、强度)进行测定并向有关部门发出通报称为地震速报。 中国的地震速报可以追溯到东汉,公元138年张衡用候风地动仪测报了洛阳西北方向的一次地震(即甘肃临洮七级地震)。 1966年邢台地震后,我国在北京地区建立了区域性地震电信传输台网,从事区域地震速报工作。1970年开始在全国范围内逐步建立起中国地震速报台网,负责对发生在中国境内的M_s≥5.0、边境附近的M_s≥6.0、世界范围的
After a destructive or obvious earthquake, people first and foremost are concerned about where the earthquake occurred and how big the magnitude is? Earthquake speeches must be done to answer this question. In a short period of time the parameters of the earthquake have occurred (seismogenic time, location, intensity) were measured and sent a circular to the relevant departments known as the earthquake reports. Earthquake reports in China can be traced back to the Eastern Han Dynasty. In 138 AD, Zhang Heng used an active wind instrument to report an earthquake in the northwest of Luoyang (ie, a magnitude 7 earthquake in Linli, Gansu Province). After the Xingtai earthquake in 1966, China established a regional seismic telecommunications transmission network in Beijing to carry out regional earthquake quick report work. Beginning in 1970, China Earthquake Quotations Network was gradually established across the country and was responsible for measuring M_s≥5.0 in China, M_s≥6.0 near the border,