Second -Derivate of MT Apparent Resistivity Data : A Possible Solution to Detectability

摘要：

Very broad band of natural magneto telluric (MT) signal with signal penetration determined by theskin depth provides MT method capability to probe shallow and deep features equally well albeitwith decreasing resolution as the depth increases. We used a new processing scheme involvingsecond derivative of the apparent resistivity curve to enhance the effects of thin conducting layersin continental crusts at different depth which are otherwise masked in conventional resistivitypseudo sections. As the second derivative of apparent resistivity curve exhibits a peak/ trough foreach interface, the configuration of an interface can be easily marked in a seismic-like plot ofthese data. Analyses of synthetic data over two different models, viz., Deccan Trap, India andRhine Graben-Black forest region, Germany demonstrate the potential of the scheme developed.

关键词： Second-Derivative Magnetotelluric Continental Crusts

作者: Bimalendu B Bhattacharya Shalivahan Ranjit K Shaw

作者单位: S N Bose National Center for Basic Sciences, Sector III, JD Block Salt Lake, Kolkata 700 098,India, Department of Applied Geophysics, Indian School of Mines University, Dhanbad 826 004, Department of Applied Geophysics, Indian School of Mines University, Dhanbad 826 004,Presently at Fu

会议类型: 国际会议

会议名称: The 19th International Workshop on Electromagnetic Induction in the Earth(第十九届国际地球电磁感应学术研讨会)

会议地点: 北京

会议语种:英文

页码: 813-817

在线出版日期: 2008-10-23（万方平台首次上网日期，不代表论文的发表时间）