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基于RRI反演的高频大地电磁测深在深边部矿产勘探中的试验研究
高频大地电磁测深 EH-4仪器 地球物理找矿 RRI反演
2009/5/12
随着我国国民经济的快速发展,对各种矿产资源的需求量越来越大.经过多年对近地表的矿产开采之后,找矿的目标逐渐向矿区深边部发展.本文阐述采用EH4电导率成像系统的高频大地电磁法,并且利用RRI反演,能够准确快速地探测大深度范围内的矿化异常,对矿区的深边部矿产的赋存状态进行超前地宏观预测,并将野外的成功实例进行分析。
频率域2维电磁测深资料的RRI反演
线源 电磁测深 RRI反演
2009/5/11
本文将大地电磁反演中的RRI方法应用于线源频率测深模型资料的反演中.当背景电导率变化很小时,可用变化前的电场来近似代替变化后的电场,从而在反演方程的推导过程中将有源电磁场中的源项消掉,得到和大地电磁场相同的反演方程,使有源电磁波的反演也可以应用RRI方法.反演过程中所需要的模型资料通过有限元方法得到,该资料不需做近场校正,直接用适合于有源电磁场的RRI方法反演,避免了近场校正带来的误差.数值模型结...
Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998-2002
Atmospheric particle formation events Vä rriö measurement station Finnish Lapland
2009/3/6
During the calendar years 1998-2002, 147 clear 8nm diameter particle formation events have been identified at the SMEAR I station in Värriö, northern Finland. The events have been classified...
Concentrations and fluxes of aerosol particles during the LAPBIAT measurement campaign at Värriö field station
aerosol particles LAPBIAT Vä rriö field station
2008/12/15
The LAPBIAT measurement campaign took place in the Värriö SMEAR I measurement station located in Eastern Lapland in the spring of 2003 between 26 April and 11 May. In this paper we describe ...