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arXiv physics/0605254physics.geo-phphysics.gen-ph
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作为magnetic storms可能前兆的地磁测量的统计特性

Statistical properties of geomagnetic measurements as possible precursors for magnetic storms

Andres R. R. Papa, Lilian P. Sosman

摘要:

地磁测量记录被分析,寻找磁暴可能前兆的证据。在此基础上,对1998-2002年的主要磁暴进行了Dst指数定位。采用最近在文献中介绍的方法,对风暴前的时期和风暴前的时期进行了研究。两种类型的期间的统计特性进行了比较。其中一个比较的数量是已经发现的一些相关分布的幂律的斜率。发现了斜率分布之间的系统偏差,这可能是记录中非自组织成分的指纹。还发现了斜率值和相应的风暴强度之间的相关性,这可以作为磁暴预报的概率方法。数据来自低纬度Vassouras Magnetic Observatory。

英文摘要:

Records of geomagnetic measurements have been analyzed looking for evidences of possible precursors for magnetic storms. With this objective, the main magnetic storms in the period 1998-2002 have been located in Dst index record. Periods immediately before storms and periods well before them were studied by applying a method recently introduced in the literature. Statistical properties of both types of periods have been compared. One of the compared quantities was the slope of the power laws that have been found for some relevant distributions. A systematic deviation between slope distributions was found. This might be the fingerprint of a non self-organized component in records. There has also been found a correlation between slope values and the corresponding storm intensities, which could serve as a probabilistic approach to magnetic storms forecasting. Data is from the low latitude Vassouras Magnetic Observatory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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