苍梧M_S5.4地震和呼图壁M_S6.2地震震前重力非潮汐变化特征

发布时间：2018-06-01 16:56

  本文选题：苍梧MS.地震 + 呼图壁MS.地震　； 参考：《大地测量与地球动力学》2017年12期

【摘要】：分别对苍梧M_S5.4地震震前的梧州台和呼图壁M_S6.2地震震前的库尔勒台连续重力观测数据进行分析研究。结果表明,2次地震前梧州台和库尔勒台分别观测到10个月和7个月左右的重力非潮汐持续性上升变化,月均变化速度分别为5.0μGal/月和5.1μGal/月,累计变化分别约为50μGal和35μGal。经现场核实和理论计算排除环境干扰影响,认为2次地震震前数月的重力非潮汐持续上升变化与孕震过程有关,可为构建连续重力观测地震预测指标体系提供重要参考。
[Abstract]:The continuous gravity observation data of the Wuzhou station before the Cangwu M_S5.4 earthquake and the Kuerle station before the Hutubi M_S6.2 earthquake were analyzed and studied respectively. The results show that the variation of gravity nontidal persistence is observed in Wuzhou station and Korla station for 10 months and 7 months before the two earthquakes. The average monthly variation rate is 5.0 渭 Gal/ month and 5.1 渭 Gal/ month respectively, and the accumulative variation is about 50 渭 Gal and 35 渭 Gal, respectively. By field verification and theoretical calculation, it is considered that the continuous rise of gravity non-tide in the months before the two earthquakes is related to the seismogenic process, which can provide an important reference for the establishment of the earthquake prediction index system of continuous gravity observation.
【作者单位】： 地壳运动监测工程研究中心;中国地震局地震研究所(地震大地测量重点实验室);
【基金】：地壳运动监测工程研究中心主任基金(NEIS201404) 中国地震局地震科技星火计划(XH15055) 国家自然科学基金(41304057)~~
【分类号】：P312.4;P315.72
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本文编号：1964967