| 地磁观测数据重构技术研究 |
| |
| 引用本文： | 姚休义,滕云田,杨冬梅,姚远,陈俊.地磁观测数据重构技术研究[J].地震学报,2016,38(6):878-888. |
| |
| 作者姓名： | 姚休义 滕云田 杨冬梅 姚远 陈俊 |
| |
| 作者单位： | 1.中国昆明 650224 云南省地震局 |
| |
| 基金项目： | 地震科技星火计划项目XH13022云南省地震局青年基金项目201504地震科技星火计划项目(XH13022)和云南省地震局青年基金项目(201504)共同资助 |
| |
| 摘 要： | 基于地磁相对记录数据在1 000 km范围内有较高的相关性，本文以缺失数据台站的邻近台站作为参考台站，通过关系拟合及加权对缺失数据进行了重构.数据仿真结果表明:重构数据与原始数据的变化形态极为一致，磁静日平均重构残差仅为0.11 nT，磁扰日平均重构残差为0.23 nT；重构数据与原始数据的功率谱密度变化特征基本相同，相关性高达1.0.此外，从时域和频域上验证了空间加权法在地磁相对记录数据重构上的有效性，将其应用于实际缺失数据重构中也取得了较好的效果.
|
| 关 键 词： | 空间相关性 缺数 重构 残差 |
| 收稿时间： | 2015-09-20 |
On reconstruction technique of geomagnetic observation data |
| |
| Institution: | 1.Earthquake Administration of Yunnan Province, Kunming 650224, China2.Institute of Geophysics, China Earthquake Administration, Beijing 100081, China3.Tonghai Seismic Station, Earthquake Administration of Yunnan Province, Yunnan Tonghai 652700, China4.Mengcheng Seismic Station, Earthquake Administration of Anhui Province, Anhui Mengcheng 233527, China |
| |
| Abstract: | This paper applies space weighting method to rebuild geomagnetic missing data based on the high correlation of observatory data in the range of 1 000 km. The simulation results show that variation of rebuilt data is consis-tent to that of original data, and their average residual is 0.11 nT in quiet day, and reaches 0.23 nT in disturbed day. The correlation of their power spectral density reaches up to 1.0. Furthermore, the space weighting method is verified to be effective for geomagnetic data reconstruction in time and frequency domains, and also achieves good results in the actual data reconstruction. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地震学报》浏览原始摘要信息 |
| 点击此处可从《地震学报》下载免费的PDF全文 |
|
