Improved Responses with Multitaper Spectral Analysis for Magnetotelluric Time Series Data Processing:Examples from Field Data  

作　　者：Matthew J.COMEAU Rafael RIGAUD Johanna PLETT Michael BECKEN Alexey KUVSHINOV 

机构地区：[1]Department of Geoscience&Engineering Delft University of Technology,The Netherlands [2]Institute of Geophysics,ETH,Zürich,Switzerland [3]Institut für Geophysik,Universität Münster,Germany

出　　处：《Acta Geologica Sinica(English Edition)》2024年第S01期14-17,共4页地质学报（英文版）

摘　　要：In order to attain good quality transfer function estimates from magnetotelluric field data(i.e.,smooth behavior and small uncertainties across all frequencies),we compare time series data processing with and without a multitaper approach for spectral estimation.There are several common ways to increase the reliability of the Fourier spectral estimation from experimental(noisy)data;for example to subdivide the experimental time series into segments,taper these segments(using single taper),perform the Fourier transform of the individual segments,and average the resulting spectra.

关 键 词：MAGNETOTELLURICS electrical resistivity time series PROCESSING Fourier analysis multitaper 

分 类 号：P631.325[天文地球—地质矿产勘探]