Results 1 to 10 of about 219,012 (301)

Joint inversion of transient electromagnetic and radiomagnetotelluric data for enhanced subsurface characterization [PDF]

open access: yesScientific Reports
Joint inversion of geophysical data offers a robust means to improve the resolution and reliability of subsurface models, particularly when integrating methods with complementary depth sensitivities.
Ismael M. Ibraheem   +4 more
doaj   +2 more sources

Geostatistical joint inversion of frequency-domain electromagnetic data and direct current resistivity data for near-surface modelling [PDF]

open access: yesScientific Reports
Geophysical methods, such as electrical resistivity tomography (ERT) and frequency-domain electromagnetic (FDEM) induction, have been widely used for imaging and modelling the first meters of the Earth, in fields like agriculture, urban development ...
João Narciso   +2 more
doaj   +2 more sources

Selection of borehole temperature depth profiles for regional climate reconstructions [PDF]

open access: yesClimate of the Past, 2007
Borehole temperature depth profiles are commonly used to infer time variations in the ground surface temperature on centennial time scales. We compare different procedures to obtain a regional ground surface temperature history (GSTH) from an ensemble of
C. Chouinard, J.-C. Mareschal
doaj   +4 more sources

Joint geoacoustic inversion based on Pearson correlation coefficient constraints [PDF]

open access: yesJASA Express Letters, 2023
This Letter proposes a joint geoacoustic inversion method for modal group velocity dispersion and amplitudes of waveform by incorporating a Pearson correlation constraint. Numerical simulations show that this joint inversion leads to improved geoacoustic
Jiaqi Ding, Xiaofeng Zhao, Pinglv Yang
doaj   +1 more source

Three-Dimensional Joint Inversion of the Resistivity Method and Time-Domain-Induced Polarization Based on the Cross-Gradient Constraints

open access: yesApplied Sciences, 2023
The resistivity method and time-domain-induced polarization (TDIP) are two branches of electric exploration that are used to solve problems in mineral exploration, hydrogeology and engineering geology.
Depeng Zhu   +3 more
doaj   +1 more source

Joint migration inversion: features and challenges [PDF]

open access: yesJournal of Geophysics and Engineering, 2020
Abstract Joint migration inversion is a recently proposed technology, accommodating velocity model building and seismic migration in one integrated process. Different from the widely accepted full waveform inversion technology, it uses imaging parameters, i.e.
Eric Verschuur   +3 more
openaire   +3 more sources

Joint inversion of gravity and vertical gradient data based on modified structural similarity index for the structural and petrophysical consistency constraint

open access: yesGeodesy and Geodynamics, 2023
Joint inversion is one of the most effective methods for reducing non-uniqueness for geophysical inversion. The current joint inversion methods can be divided into the structural consistency constraint and petrophysical consistency constraint methods ...
Sheng Liu   +8 more
doaj   +1 more source

Consistent retrieval of land surface radiation products from EO, including traceable uncertainty estimates [PDF]

open access: yesBiogeosciences, 2017
Earth observation (EO) land surface products have been demonstrated to provide a constraint on the terrestrial carbon cycle that is complementary to the record of atmospheric carbon dioxide.
T. Kaminski   +5 more
doaj   +1 more source

Probabilistic approach to Gramian inversion of multiphysics data

open access: yesFrontiers in Earth Science, 2023
We consider a probabilistic approach to the joint inversion of multiphysics data based on Gramian constraints. The multiphysics geophysical survey represents the most effective technique for geophysical exploration because different physical data reflect
Michael S. Zhdanov   +3 more
doaj   +1 more source

Joint inversion of earthquake-based horizontal-to-vertical spectral ratio and phase velocity dispersion: Applications to Garner Valley

open access: yesFrontiers in Earth Science, 2022
Joint inversion of horizontal-to-vertical spectral ratios (HVSRs) and dispersion curves (DCs) from seismic noise recordings has been extensively used to overcome the lack of inversion uniqueness in the noise-based HVSR (NHV) or DC inversions alone ...
Rong Mianshui   +3 more
doaj   +1 more source

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