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为了满足四川汶川8级特大地震灾后恢复重建工作的迫切需要,编制了汶川地震灾区地震动参数区划图。该区划图是对全国地震区划图的局部修订,重点根据震后初步的发震构造现场调查获得的新资料,以及震后对龙门山断裂带地震构造条件的新的认识,对潜在震源区划分方案及其地震活动性参数进行了重点调整和修订,并据此对灾区地震动参数进行了计算,完成地震动参数区划。本文简要介绍了区划图编制的情况及其重要结果。
In order to meet the urgent need of post-disaster reconstruction of Wenchuan Earthquake in Sichuan Province, a zoning map of seismic motion parameters in Wenchuan earthquake-stricken area was prepared. The zoning map is a partial revision of the national seismic zoning map, focusing on new data obtained from the initial seismogenic structure field survey after the earthquake and new understanding of the earthquake tectonic conditions of the Longmen Shan fault zone after the earthquake. Program and its seismicity parameters are adjusted and revised. Based on the above, the ground motion parameters in the disaster area are calculated to complete the zoning of ground motion parameters. This article briefly introduces the zoning map preparation and its important results.