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| 基于小波分析的河北省及邻区流动重力场时空动态变化分析 |
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侯晓真1, 祝意青2, 刘芳2, 马栋1, 屈曼1, 陈建国1, 刘洪良3, 张展伟3, 高晨1
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1.河北省地震局, 石家庄 050021;2.中国地震局第二监测中心, 西安 710054;3.河北省地震局流动测量队, 河北保定 071000
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| 摘要: |
| 搜集河北省及其邻近地区2010~2014年8期流动重力观测数据和周围绝对重力观测数据，利用小波多尺度分解方法获取河北及邻近区域（110°~120°E，36°~42°N）范围内不同尺度、不同场源深度下的分解结果，并结合该时间段内震例，通过对多期实验结果进行分析，对研究区内的重力变化情况及异常特征有更为清晰的认识，其结论可为河北省及邻近地区后续震情分析、研判提供一定参考。 |
| 关键词: 小波多尺度分解 功率谱 重力场 河北及邻近地区 |
| DOI： |
| 分类号:P315 |
| 基金项目:河北省地震科技星火计划项目（DZ20190424078、DZ20180316005）共同资助 |
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| Analysis of Spatio-temporal Dynamics of Gravity Field in Hebei Province and Its Adjacent Areas Based on Wavelet Analysis |
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Hou Xiaozhen1, Zhu Yiqing2, Liu Fang2, Ma Dong1, Qu Man1, Chen Jianguo1, Liu Hongliang3, Zhang Zhanwei3, Gao Chen1
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1.Hebei Earthquake Agency, Shijiazhuang 050021, China;2.The Second Monitoring Center, China Earthquake Administration, Xi'an 710054, China;3.Mobile Survey Team of Hebei Earthquake Agency, Baoding 071000, Hebei, China
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| Abstract: |
| We collected the gravity observation data of Hebei Province and its neighboring regions(110°~120°E,36°~42°N) from 2010 to 2014,and used multi-scale wavelet decomposition to get data at different scales and depth. Combined with the case of earthquakes in this period,we have a clearer understanding of the gravity changes and abnormal characteristics in the study area. The conclusions can provide some reference for the subsequent seismic situation analysis and judgment in Hebei Province and its neighboring regions. |
| Key words: Multi-scale wavelet decomposition Power spectrum Gravity field Hebei Province and its adjacent areas |
