摘要
采用2011~2012年期间在蒙古国境内地磁测量得到的119点地磁数据,利用以球冠谐和和曲面样条方法得到的蒙古地区地磁场数值为基础数据,获得了2010.0年代蒙古地区岩石磁异常的空间分布,对蒙古地区岩石磁异常的空间分布进行了研究。结果表明,蒙古地区的岩石磁异常表现出东西差异,异常幅度在西部较大东部较小。蒙古西部南边界处表现为类弧形结构和贝加尔—乌兰巴托条带结构为蒙古地区较为显著的磁异常结构。
Using geomagnetic data of 119 measuring points in M ongolia from 2011 to 2012 obtained by geomagnetic measuring,basing on the geomagnetic data calculated by Spherical Cap Harmonic and Surfaces Spline methods,we obtained and studied the spatial distribution of the lithosphere geomagnetic anomaly in M ongolia in 2010. 0.The results show that the lithosphere magnetic anomaly in east M ongolia were different with that in West M ongolia,and the amplitude of anomaly was larger in western and less in eastern. There were 2 obvious structure of anomaly magnetic in M ongolia,one was an arc structure at Southern boundary of western M ongolia and the other one was a belt structure belong Baikal-Ulaanbaatar.
出处
《地震研究》
CSCD
北大核心
2015年第1期114-118,共5页
Journal of Seismological Research
基金
2011年度国家科技计划项目"远东地区地磁场
重力场及深部构造观测与模型研究"(2011DFB20120)
2012年度地震行业科研专项经费项目"中国综合地球物理场观测-鄂尔多斯地块周缘地区"(201208009)联合资助
关键词
岩石圈磁场
磁异常
蒙古地区
球冠谐和
曲面样条
lithosphere magnetic field
magnetic anomaly
Mongolia area
Spherical Cap Harmoni
Surfaces Spline
