Results 21 to 30 of about 3,752,884 (240)
Seismic Characterization of the Blue Mountain Geothermal Field
Energies, 2023 Subsurface characterization is crucial for geothermal energy exploration and production. Yet hydrothermal reservoirs usually reside in highly fractured and faulted zones where accurate characterization is very challenging because of low signal-to-noise ...
Kai Gao +2 more
doaj +1 more source
Acoustic full-waveform inversion in an elastic world
Geophysics, 2016 ABSTRACT Full-waveform inversion (FWI) is a technique used to obtain high-quality velocity models of the subsurface. Despite the elastic nature of the earth, the anisotropic acoustic wave equation is typically used to model wave propagation in FWI.
Calderon Agudo, O +3 more
openaire +2 more sources
Reflection Full Waveform Inversion with Decoupled Elastic-wave Equations in Inhomogeneous Medium [PDF]
, 2021 Reflection full-waveform inversion (RFWI) can reduce the nonlinearity of inversion providing an accurate initial velocity model for full-waveform inversion (FWI) through the tomographic components (low-wavenumber).
Liang, Zhanyuan +3 more
core +1 more source
Geometry-Encoded Soft Strain Sensing via Liquid-Metal Transmission Lines. [PDF]
Adv Sci (Weinh)This study presents a liquid‐metal transmission‐line strain sensor that achieves intrinsic decoupling by encoding axial elongation into propagation delay. The time‐domain readout remains stable under complex off‐axis. This enables reliable, repeatable, real‐time elongation measurement in dynamic, multiaxial loading environments for wearable electronics,
Liu Z +12 more
europepmc +2 more sources
Inverse Design of Pre-Strain via a Predictive Electromechanical Model for Enhanced Strain Sensing. [PDF]
Adv Sci (Weinh)An analytical electromechanical model rooted in microcrack evolution mechanics is globally calibrated from only eight pre‐strain datasets, enabling prediction of the complete sensing response at untested pre‐strain values within the calibrated design space (R2 > 0.99).
Shang JC +10 more
europepmc +2 more sources
Advanced Elastic and Reservoir Properties Prediction through Generative Adversarial Network
Applied Sciences, 2023 The prediction of subsurface properties such as velocity, density, porosity, and water saturation has been the main focus of petroleum geosciences.
Muhammad Anwar Ishak +6 more
doaj +1 more source
A Reflectivity Guided Elastic Full Waveform Inversion
Recent Advances in Exploration Geophysics, 2014 Full waveform inversion (FWI) produces subsurface images by minimizing the misfit between observed data and calculated model using iterative local optimization algorithms like conjugate gradient method. This approach requires a starting model which should appear in the neighborhood of the global solution of the FWI problem to ensure that the modeled ...
E.J. Hondori, H. Mikada, Eiichi ASAKAWA
openaire +2 more sources
Numerical simulations of pure quasi-P-waves in orthorhombic anisotropic media
Frontiers in Earth Science, 2023 The accurate simulation of anisotropic media is critical in seismic imaging and inversion. In recent years, some scholars have dedicated efforts to the study of precise elastic waves in anisotropic media; however, it is easy to separate P-wave and S-wave
Hao Wang +3 more
doaj +1 more source
Recent progress on full waveform inversion
地球与行星物理论评, 2023 Full waveform inversion is an acoustic/elastic/anelastic wave equation-based high accuracy seismic imaging method for studying the Earth's interior structure.
Hejun Zhu, Qinya Liu, Jidong Yang
doaj +1 more source
Georesursy, 2018 In sedimentary basin, elastic anisotropy can be described by a transverse isotropic medium and the attenuation in the seismic bandwidth can be approximated by a quasi-constant quality factor.
C. Barnes, M. Charara
doaj +1 more source