CAJ | 학술논문

根据Dar Zarrouk曲线与视电阻率曲线基本重合的性质,以及纵向电导和横向电阻的概念,推导出一种利用视电阻率曲线直接反演垂向电阻率分布的方法.把大地表示为一维层状均匀模型,每个极距对应一个深度,深度之间地层电阻率不变,把某个深度之上的横向电阻率和纵向电阻率用对应的视电阻率代替.公式中不用求对数,只需简单的运算即可把视电阻率随极距变化的曲线直接转换为电阻率随深度变化的曲线.算例表明,本方法能反演复杂的一维模型,可以为进一步的精确反演提供初始模型.
근거Dar Zarrouk곡선여시전조솔곡선기본중합적성질,이급종향전도화횡향전조적개념,추도출일충이용시전조솔곡선직접반연수향전조솔분포적방법.파대지표시위일유층상균균모형,매개겁거대응일개심도,심도지간지층전조솔불변,파모개심도지상적횡향전조솔화종향전조솔용대응적시전조솔대체.공식중불용구대수,지수간단적운산즉가파시전조솔수겁거변화적곡선직접전환위전조솔수심도변화적곡선.산례표명,본방법능반연복잡적일유모형,가이위진일보적정학반연제공초시모형.
Based on the Dar Zarrouk curves and the conception of longitudinal conductance and transverse resistance,a direct inversion method of one-dimension direct current sounding curves is derived.Earth is represented as 1-D layered homogeneous model,each polar distance corresponds to a depth,the resistivity between adjacent layers is homogeneous.The longitudinal conductance and transverse resistance over certain depth are replaced with the corresponding apparent resistivity.This method is simple,without calculating derivative and logarithm.The apparent resistivity curves can easily be transformed into the curves of resistivity vs depth.The inversion results can be used as initial model for more accuracy inversion.