| 四分位法在地磁日变化观测数据分析中的应用 |
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| 引用本文： | 何宇飞,杨冬梅,朱荣,陈传华. 四分位法在地磁日变化观测数据分析中的应用[J]. 地震地磁观测与研究, 2011, 32(1): 65-70. DOI: 10.3969/j.issn.1003-3246.2011.01.012 |
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| 作者姓名： | 何宇飞 杨冬梅 朱荣 陈传华 |
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| 作者单位： | 何宇飞,杨冬梅,朱荣,He Yufei,Yang Dongmei,Zhu Rong(中国北京,100081,中国地震局地球物理研究所);陈传华,Chen Chuanhua(中国山东,271000,泰安基准地震台) |
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| 基金项目： | 国家地震行业专项，地震行业科研专项项目 |
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| 摘 要： | 四分位法可用于描述包括偏态分布、分布不明和分布末端无确定值等任何分布资料的特征,并且可以去除数据中大数的影响,较均值、标准差等更为稳定.针对地磁日变化数据的复杂性,不同时段数据分布特征的差异性和不确定性,在此引进四分位法加以分析.通过分析,提取地磁日变化中来自地磁场扰动、仪器记录错误、人为干扰以及可能与地震的孕育有关因...
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| 关 键 词： | 四分位法 地磁日变化观测数据 相对异常 |
The applicability of the quartile method in analyzing geomagnetic observation data |
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| He Yufei,Yang Dongmei,Zhu Rong,Chen Chuanhua. The applicability of the quartile method in analyzing geomagnetic observation data[J]. Seismological and Geomagnetic Observation and Research, 2011, 32(1): 65-70. DOI: 10.3969/j.issn.1003-3246.2011.01.012 |
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| Authors: | He Yufei Yang Dongmei Zhu Rong Chen Chuanhua |
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| Affiliation: | 1) Institute of Geophysics, China Earthquake Administration, Beijing 100081, China 2) Tai＇an Seismic Station, Shandong Province 271000, China |
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| Abstract: | The quartile method can be used to describe the data with any distribution, includingskewed distribution, unknown distribution and so on and it can effectively reduce the influence from the large data. Compared to the mean and the standard deviation, the median and the IQR are more stable parameter in the process of data analyzing. As the geomagnetic data was so complex and uncertain, we tried to apply the method to geomagnetic data analyzing. After carefully analyzing, some information can be extracted from the geomagnetic observation data, for example the instrument recording errors, the disturbances form geomagnetic field, the manmade disturbances and so on. There are also some abnormalities possible relate with earthquake or other unknown factor. Therefore, the applicability of the method in data processing and supervising is effective. |
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| Keywords: | IQR method geomagnetic observation data abnormality |
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