华北地区地磁总强度大地噪声的研究
-
摘要: 利用北京台的地磁矢量资料实现了对华北地区地磁总强度21点差值大地噪声的拟合.通过上述拟合研究了该地区总强度大地噪声的水平与特点,并提出一种判别拟合是否可信的有效方法.分析表明,对于构造磁效应而言大地噪声是一种值得重视的噪声.华北地区总强度差值的磁化率效应比较弱,方向性效应是该地区大地噪声的主要成分.同时,由大地噪声特点推测了华北地区介质磁性异常分布的大致特点.另外,通过对排除大地噪声后剩余噪声的研究,得到了该地区地磁总强度21点值台网的平均观测水平值与源场噪声水平值及其与台距的关系.
-
-
[1] Beahn, T. J.,1976.Geomagnetic field gradient measurements and noise reduction techniques in Colorado. J. Geo phys. Res.,81,6276——6280.
[2] Davis, P. M.,Stacey. F. D.Zablocki, C. J and Olsen,J.V.,1979.Improved signal discrimination in tectono magnettsm:discovery of a volcanomagnetic effect at Kilanea.Hawaii. Phys. Earth Plan. Int.,19. 331——336.
[3] Davis. P. M. and Johnston, M.J.S. . 1983.Localized geomagnetic change near active Faults in California. J.Geo phys. Res.,9452——9460.
[4] Poehls. K. A. and .lackson, D.D. 1978. Tectonomagnetic events detection using empirical transfer functions. J.Geophys. Res.,83. B10,4933——4940.
[5] Rikitake. T.. 1966.Elimination of non local changes from total intensity values of geomagnetic field. Bu11.Inst.Tokyo Univ.,44. 1041——1070.
[6] Steppe, J. A.,1979.Reducing noise in tectonomagnetic experiments by linear regression. J.Geophys.Res., 3063——3067
[7] Ware. R. H.,1979.High——accuracy magnetic field difference measurements and improved noose reduction techniques for use in tectonomagnetic studies. J. Geophys.Res.,.84, B11.6291——6295.[1] Beahn, T. J.,1976.Geomagnetic field gradient measurements and noise reduction techniques in Colorado. J. Geo phys. Res.,81,6276——6280.
[2] Davis, P. M.,Stacey. F. D.Zablocki, C. J and Olsen,J.V.,1979.Improved signal discrimination in tectono magnettsm:discovery of a volcanomagnetic effect at Kilanea.Hawaii. Phys. Earth Plan. Int.,19. 331——336.
[3] Davis. P. M. and Johnston, M.J.S. . 1983.Localized geomagnetic change near active Faults in California. J.Geo phys. Res.,9452——9460.
[4] Poehls. K. A. and .lackson, D.D. 1978. Tectonomagnetic events detection using empirical transfer functions. J.Geophys. Res.,83. B10,4933——4940.
[5] Rikitake. T.. 1966.Elimination of non local changes from total intensity values of geomagnetic field. Bu11.Inst.Tokyo Univ.,44. 1041——1070.
[6] Steppe, J. A.,1979.Reducing noise in tectonomagnetic experiments by linear regression. J.Geophys.Res., 3063——3067
[7] Ware. R. H.,1979.High——accuracy magnetic field difference measurements and improved noose reduction techniques for use in tectonomagnetic studies. J. Geophys.Res.,.84, B11.6291——6295.
计量
- 文章访问数: 1127
- HTML全文浏览量: 14
- PDF下载量: 94
下载:
