Controlled-source electromagnetic data processing based on gray system theory and robust estimation
Sign Up to like & getrecommendations! Published in 2017 at "Applied Geophysics"
DOI: 10.1007/s11770-017-0646-5
Abstract: We propose a novel method that combines gray system theory and robust M-estimation method to suppress the interference in controlled-source electromagnetic data. We estimate the standard deviation of the data using a gray model because… read more here.
Keywords: robust estimation; gray system; method; source electromagnetic ... See more keywords
Comparison of structured and unstructured grids in marine controlled source electromagnetic inversions for offshore hydrocarbon exploration
Sign Up to like & getrecommendations! Published in 2019 at "Marine and Petroleum Geology"
DOI: 10.1016/j.marpetgeo.2018.11.008
Abstract: Abstract The grid chosen for marine controlled-source electromagnetic forward modeling and inversion is important because it affects the accuracy and efficiency of the latter. Providing these kinds of results is particularly difficult for offshore exploration.… read more here.
Keywords: marine controlled; source electromagnetic; controlled source; geometry ... See more keywords
Robust data processing of noisy marine controlled-source electromagnetic data using independent component analysis
Sign Up to like & getrecommendations! Published in 2017 at "Exploration Geophysics"
DOI: 10.1071/eg17139
Abstract: Data processing techniques are often used to estimate the noise-free response of marine controlled-source electromagnetic (CSEM) data and magnetotelluric transfer functions. We have implemented a new CSEM data processing scheme that uses a robust method… read more here.
Keywords: csem data; data processing; independent component; source electromagnetic ... See more keywords
Parallel 3-D marine controlled-source electromagnetic modelling using high-order tetrahedral Nédélec elements
Sign Up to like & getrecommendations! Published in 2019 at "Geophysical Journal International"
DOI: 10.1093/gji/ggz285
Abstract: We present a parallel and high-order Nédélec finite element solution for the marine controlled-source electromagnetic (CSEM) forward problem in 3-D media with isotropic conductivity. Our parallel Python code is implemented on unstructured tetrahedral meshes, which… read more here.
Keywords: marine controlled; source electromagnetic; order; controlled source ... See more keywords
Fast 3-D Controlled-Source Electromagnetic Modeling Combining UPML and Rational Krylov Method
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2022.3162695
Abstract: Controlled-source electromagnetic (CSEM) surveying is a critical tool for sensing and locating underground anomalies and structures. In this letter, based on uniaxial perfectly matched layer (UPML) and rational Krylov (RK) method, we propose a fast… read more here.
Keywords: upml rational; rational krylov; controlled source; krylov method ... See more keywords
Accelerating the Frequency Domain Controlled-Source Electromagnetic Data Inversion Using Rational Krylov Subspace Algorithm
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2022.3183838
Abstract: Controlled-source electromagnetic (CSEM) method is crucial for detecting and locating underground anomalies and structures. However, it is challenging to interpret the field data with multifrequency via 3-D CSEM inversion. To fully excavate and utilize the… read more here.
Keywords: rational krylov; inversion; controlled source; krylov subspace ... See more keywords