﻿ 新疆精河6.6级地震前精河水平摆异常特征分析
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 大地测量与地球动力学  2019, Vol. 39 Issue (5): 547-550  DOI: 10.14075/j.jgg.2019.05.021

### 引用本文

XU Lu, XING Ximin. The Analysis of Anomalous Characteristics of Jinghe Horizontal Pendulum before Jinghe 6.6 Earthquake in Xinjiang[J]. Journal of Geodesy and Geodynamics, 2019, 39(5): 547-550.

### Foundation support

The Spark Program of Earthquake Technology of CEA, No.XH19049; Open Fund of the "13th Five-Year" Discipline of Xinjiang Uygur Autonomous Region, No. XJZDXK-M2017003;Combination Project with Monitoring, Prediction and Scientific Research of Earthquake Technology, CEA, No.CEA-JC/3JH-173103.

### Corresponding author

XING Ximin, senior engineer, majors in crustal deformation and earthquake, E-mail:442635690@qq.com.

### 第一作者简介

XU Lu, lecturer, majors in big data analysis and scientific computing, E-mail:461392767@qq.com.

### 文章历史

1. 伊犁师范学院数学与统计学院，新疆维吾尔自治区伊宁市解放西路448号，835000;
2. 新疆维吾尔自治区地震局，乌鲁木齐市新市区科学二街338号，830011

2017-08-09新疆精河县发生6.6级地震(北纬44.27°，东经82.89°)，震源深度11 km。本文结合发震构造、震源机制对精河6.6级地震前精河水平摆的异常特征进行深入探讨。

1 精河地震震源机制与发震构造

2 观测环境、地质构造及观测系统

3 数据分析

 图 2 精河水平摆日均值观测时序图(2010-01-01~2017-08-08) Fig. 2 The observed sequence diagram of the daily mean of the Jinghe horizontal

 $\begin{array}{l} y = - 0.000{\rm{ }}18{x^2} + 21.175{\rm{ }}4x - 615{\rm{ }}546.139{\rm{ }}8\\ y = - 0.875{\rm{ }}7x + 46{\rm{ }}287.0380{\rm{ }}1 \end{array}$

 $y = - 0.118{\rm{ }}741{x^2} + 7.99{\rm{ }}789x - 30.431{\rm{ }}015$
 图 3 精河水平摆与气温散点图 Fig. 3 Jinghe horizontal pendulum and temperature scatter diagram

 $y = - 16.083{\rm{ }}9x + 134.722{\rm{ }}3$

 图 4 精河水平摆两分量与气温回归分析残差曲线 Fig. 4 The residual curves of the two components and the temperature regression analysis are analyzed

4 异常与构造关系

 图 1 精河地震台与精河6.6级地震位置关系 Fig. 1 The relationship between the seismic station of Jinghe and the MS6.6 earthquake in Jinghe
5 结语

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The Analysis of Anomalous Characteristics of Jinghe Horizontal Pendulum before Jinghe 6.6 Earthquake in Xinjiang
XU Lu1     XING Ximin1,2
1. College of Mathematics and Statistics, Yili Normal University, 448 West-Jiefang Road, Yining 835000, China;
2. Earthquake Agency of Xinjiang Uygur Autonomous Region, 338 Second-Kexue Street, Urumqi 830011, China
Abstract: Taking Jinghe horizontal pendulum observation data as the research object, we eliminate the influence of temperature on observation data to extract the abnormal characteristics of observed data. Then, combining this with the seismogenic structure of the earthquake, focal mechanism, station location and seismogenic tectonic relationship, etc., before the earthquake anomaly of Jinghe horizontal pendulum, we infer: (1) the NS component continues to be inclined since June 2016; (2) the EW component has been rapidly leaning since September 2016, and on 17 December the rate of leaning accelerates again by 0.48, which is caused by the stress accumulation before the magnitude 6.6 earthquake.
Key words: Jinghe M6.6 earthquake; Jinghe horizontal pendulum; focal mechanism; seismogenic structure; seismic anomaly