| 分形插值法在地电场干扰数据处理中的应用 |
| |
| 引用本文： | 王兰炜,张兴国,张宇,胡哲.分形插值法在地电场干扰数据处理中的应用[J].地震学报,2021,43(3):350-358. |
| |
| 作者姓名： | 王兰炜 张兴国 张宇 胡哲 |
| |
| 作者单位： | 中国北京 100036 中国地震局地震预测研究所 |
| |
| 基金项目： | 国家重点研发计划（2018YFF01013700）和中国大陆综合地球物理场观测仪器研发专项（Y201801）共同资助 |
| |
| 摘 要： | 当地电场和地电阻率同场地观测时，地电场观测会受到地电阻率观测的供电干扰，这类干扰时间短、干扰形态和出现时间固定，影响了地电场观测数据的正常变化形态，给数据分析和地震科学研究造成困难。为解决这一干扰问题，本文在比较分形插值方法与传统插值方法优劣的基础上，采用分形插值方法对受干扰的地电场观测数据进行重建，以提高信号重建的精度。结果表明，采用该方法重建的数据是对原数据很好的近似，可有效地恢复观测数据信息，保持观测数据原有的变化趋势。
|
| 关 键 词： | 地电场 同场地观测 供电干扰 分形插值 |
| 收稿时间： | 2020-08-14 |
Application of fractal interpolation method to geo-electric field interference data process |
| |
| Wang Lanwei,Zhang Xingguo,Zhang Yu,Hu Zhe.Application of fractal interpolation method to geo-electric field interference data process[J].Acta Seismologica Sinica,2021,43(3):350-358. |
| |
| Authors: | Wang Lanwei Zhang Xingguo Zhang Yu Hu Zhe |
| |
| Institution: | Institute of Earthquake Forecasting，China Earthquake Administration，Beijing 100036，China |
| |
| Abstract: | Geo-electric field and geo-electrical resistivity observation is one of the most important ways of earthquake monitoring. In recent years, geoelectric field observation has been subjected to more and more interference caused by subways, high-voltage direct current transmission, and electrical facilities, etc. Among all these interferences, there is a special type of known interference in the earthquake geo-electric field observation, which is so-called “interference from current” caused by the electric current in measuring geo-electrical resistivity if the geo-electric field and geo-electrical resistivity were observed at the same site. This kind of interference is characterized by short interference time, fixed interference waveform and fixed appearance time, and it will cause difficulties in identifying normal variation of geo-electric field and analyzing data. This paper deals with approaches of eliminating the interference data by using interpolation method. The fractal interpolation method and traditional Lagrange interpolation method were separately used. On the basis of introducing the principle of the two interpolation method, the processing result of the two methods on simulation data and actual data are compared, it demonstrates that fractal interpolation method has higher accuracy than that of Lagrange interpolation method. Then the fractal interpolation method was used in the actual data processing. The result shows that the method not only retrieves the section information effectively, but also preserves the overall original variation tendency of the observation data. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 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 |
|
