Geomagnetic Field Variations before and after the Matuyama- Jaramillo Reversal in Western Turkmenistan
Geomagnetic Field Variations before and after the Matuyama- Jaramillo Reversal in Western Turkmenistan
复制标题
土库曼斯坦西部松山-哈拉米洛逆转前后地磁场变化
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
V. M. Trubikhin
中科院分区：
文献类型：
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作者：
G. Z. Gurarii;V. Bagin;A. Garbuzenko;V. M. Trubikhin
基于最大熵和积分小波方法，对松山-哈拉米洛反转之前的松山年代和哈拉米洛亚年代的静止地磁场进行处理，提供了与考古地磁研究相似的场变化谱。然而，使用小波图对这些光谱进行时间稳定性分析拒绝了一些推断的周期性，这些周期性可能反映了所研究的系列的奇异特征和准周期行为。可靠推断的频谱是离散的，并且对于不同的场分量和时间间隔通常是不同的，这可能是反转期间地球发电机运行模式发生变化的证据。
Based on the maximum entropy and integral wavelet methods, processing of the stationary geomag- netic field of the Matuyama chron prior to the Matuyama-Jaramillo reversal and of the Jaramillo subchron pro- vided the field variation spectrum similar to that derived from archaeomagnetic investigations. However, the time stability analysis of these spectra using their wavelet diagrams rejected some of the inferred periodicities which may reflect singular features and quasi-periodic behavior of the series under study. The spectra that were reliably inferred are discrete and often dissimilar for different field components and time intervals, which may be evidence of a change in the geodynamo operation mode during the reversal.