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2014年8月3日云南鲁甸发生MS6.5地震,在震中及其周边地区分布的中国数字强震动台网的81个台站获取了这次地震的主震强震动记录。特别是位于极震区鲁甸龙头山镇财政所强震动台,完整记录到这次地震的地震动时程,其东西向PGA达948.5 cm/s2,该台站周边多栋多层建筑物底层完全倒塌和损毁,与记录所反映的强烈震动相吻合。初步分析强震动观测记录,讨论了本次地震的震中位置、破裂方向和强震动衰减速率等问题。
On August 3, 2014, 81 stations of China Digital Strong Motion Network distributed in the epicenter and surrounding areas of MS6.5 Earthquake in Ludian, Yunnan Province recorded the main shock records of this earthquake. Especially in the earthquake zone Ludian Longtoushan town finance strong shock platform, a complete record of the earthquake’s seismic time history, its east-west PGA up to 948.5 cm / s2, the station around the multi-storey building bottom Completely collapsed and destroyed, in line with the strong vibrations reflected in the record. Preliminary analysis of strong earthquake observation records, discusses the epicenter location of the earthquake, the direction of rupture and strong vibration decay rate and other issues.