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独山子台跨断层垂直形变观测资料干扰消除研究

, PP. 523-531

Keywords: 断层形变,干扰消除,独山子,自适应噪声对消,模极大值

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Abstract:

?????结合多参考自适应噪声对消和小波模极大值去噪理论,研究了新疆独山子台跨断层垂直形变观测数据的干扰因素及消除方法,结果表明利用气象温度数据和断层两盘温差数据作为两个噪声参考输入进行自适应噪声对消,可有效消除信号中的年周期变化;利用小波模极大值去噪方法,可以抑制信号中的高频白噪声成分,使信号畸变更加明显。仿真结果及实际应用均验证了此方法的有效性与实用性,消除干扰后的垂直形变数据与台站100km范围内4级以上地震有较好的对应性,反映了独山子台对周边地区4级以上地震的映震能力。

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