摘要
基于二连盆地满都拉图地区的宽频大地电磁(BMT)数据,开展了精细反演处理研究,旨在提高数据的反演精度与效果,为其他地区BMT数据的精细反演处理提供示范与借鉴。通过研究区BMT数据精细反演处理研究,选择OCCAM反演方法与TM+TE数据模式,反演参数选择背景模型为二维移动平均电阻率模型、正则因子为0.4、第一层厚度为40 m时,有效提升了数据的反演准确度,为后续资料的精细解释奠定了基础。研究结果表明:利用已知钻孔或地震资料等先验信息,首先开展有针对性的反演方法、反演数据模式以及反演参数等适用性试验研究,是确保资料减少多解性、获得可靠反演精度与效果的关键。
This study investigated the fine inversion of the broadband magnetotelluric(BMT)data of the Mandulatu area in the Erlian Basin,aiming to improve the inversion precision and performance of BMT data and to provide an example and reference for the fine in-version of BMT data of other areas.For the fine inversion of BMT data of the study area,this study selected the OCCAM inversion method and the TM+TE data mode.The inversion accuracy of data was effectively improved when the two-dimensional moving average resistivity model was selected as the background model,the regularization factor was set to 0.4,and the thickness of the first layer was set to 40 m.This result laid a basis for the subsequent fine interpretation of data.As shown by the results of this study,the key to re-ducing the multiplicity of solutions and obtaining reliable inversion precision and performance of data is to conduct an adaptive experi-mental study of the inversion methods,data modes,and parameters first using prior information,such as known borehole or seismic data.
作者
许第桥
李茂
XU Di-Qiao;LI Mao(Airborne Survey and Remote Sensing Center of Nuclear Industry,Shijiazhuang 050002,China;Hebei Provincial Key Laboratory of Aerial Detection and Remote Sensing Technology,Shijiazhuang 050002,China;CNNC Key Laboratory of Uranium Resources Geophysical Exploration Technology,Shiji-azhuang 050002,China)
出处
《物探与化探》
CAS
北大核心
2023年第4期994-1001,共8页
Geophysical and Geochemical Exploration
