Results 61 to 70 of about 3,752,834 (199)

Subspace methods for time-lapse elastic full-waveform inversion

, 2018
The application of elastic full waveform inversion on time-lapse seismic data is arising from the boom in conventional full waveform inversion. In the past few years, many different inversion strategies are introduced for the time-lapse case, taking ...
Zhang, Zhendong, Alkhalifah, Tariq Ali
core   +1 more source

Multiparameter Elastic Full Waveform Inversion with Facies-based Constraints [PDF]

, 2018
Full waveform inversion (FWI) incorporates all the data characteristics to estimate the parameters described by the assumed physics of the subsurface. However, current efforts to utilize full waveform inversion beyond improved acoustic imaging, like in ...
Naeini, Ehsan Zabihi, Sun, Bingbing, Zhang, Zhendong, Alkhalifah, Tariq Ali   +3 more
core   +1 more source

Learned Regularizations for Multi‐Parameter Elastic Full Waveform Inversion Using Diffusion Models

Journal of Geophysical Research: Machine Learning and Computation
Elastic full waveform inversion (EFWI) promises to account for the Earth's elastic nature and corresponding reflectivity, which is often disregarded in the commonly used acoustic FWI.
Mohammad H. Taufik, Fu Wang, Tariq Alkhalifah   +2 more
doaj   +1 more source

Research on karst detection based on full waveform inversion imaging technology

Carsologica Sinica
The geological development of karst areas is highly complex, and accurately detecting underground karst caves presents a significant technical challenge to ensure the safety of construction projects.
Depeng GUAN, Yong GAO, Yi LI, Yaohui LIU
doaj   +1 more source

A Biofabricated Human Acinus‐on‐a‐Chip Unveils Mechanotransductive Drivers of Ventilator‐Induced Lung Injury via Decoupling Volutrauma and Barotrauma

Advanced Science, EarlyView.
This bioinspired acinus‐on‐a‐chip recapitulates VILI pathology, revealing that volutrauma drives P53/NF‐κB pathways while barotrauma triggers mitochondrial‐Wnt dysregulation. A fibrotic transitional cell cluster was identified. Pharmacological interventions targeting these pathways significantly ameliorated injury, establishing a mechanobiological ...
Heng Lu, Liansheng Liu, Zengyong Hu, Shuxian Fang, Ruohan Ren, Sidi Liu, Meng Zhao, Zhiting Luo, Ziyue Zhang, Wenlong Shao, Qian Liu   +10 more
wiley   +1 more source

Comparative analysis of Pn full-waveform inversion and travel-time tomography in imaging upper mantle azimuthal anisotropy

Frontiers in Earth Science
Conventional Pn-wave imaging techniques, typically based on the ray theory, rely on Pn travel times to resolve the 2-D velocity and azimuthal anisotropy structures of the uppermost mantle. However, these approaches neglect the finite-frequency effects of
Bing Lu, Bing Lu, Xueyang Bao, Xueyang Bao, Xueyang Bao, Yao-Chong Sun, Wei Zhang, Wei Zhang   +7 more
doaj   +1 more source

Micro/Nanoscale Acoustic Manipulation: From Particle Control to Autonomous Microswimmers

Advanced Science, EarlyView.
This conceptual framework illustrates acoustic technology as a multifunctional platform enabling passive particle manipulation across scales and autonomous propulsion of microswimmers. ABSTRACT Acoustic manipulation and propulsion technologies have emerged as powerful platforms for micro/nanoscale control, enabled by their non‐contact operation, label ...
Jiahui Chu, Lemin Zhang, Xu Wang, Wenzong Li, Yahua Liu   +4 more
wiley   +1 more source

Elastic waveform inversion using Gauss‐Newton method

, 2005
Seismic waveform inversion has been solved usually by a gradient type approach for acoustic media. In this paper, we present an elastic waveform inversion method based on the Gauss‐Newton method. Elastic wave propagation simulation and inversion are both
Kagan Tuncay, Tuncay, Kağan, Dong‐Hoon Sheen, Peter J. Ortoleva, Ortoleva, Peter J., Chang‐Eob Baag, Baag, Chang-eob, Sheen, Dong-hoon   +7 more
core   +1 more source

Thermoelastic full-waveform inversion for joint estimation of subsurface temperature and seismic velocities in geothermal exploration

Energy Geoscience
Seismic exploration is the most precise geophysical method for investigating and forecasting subsurface resources, yet its conventional fully elastic assumption neglects temperature effects, limiting its utility in geothermal studies.
Sen Yang, Benbing Ren, Xinmin Wu, Hao Xu, Tao Yang, Yingkai Qi, Zheng Qin, Kelin Chen   +7 more
doaj   +1 more source

Characterisation of shallow marine sediments using high-resolution velocity analysis and genetic-algorithm-driven 1D elastic full-waveform inversion [PDF]

, 2016
We estimate the elastic properties of marine sediments beneath the seabed by means of high-resolution velocity analysis and one-dimensional elastic full-waveform inversion performed on twodimensional broad-band seismic data of a well-site survey.
MAZZOTTI, ALFREDO, TOGNARELLI, ANDREA, ALEARDI, MATTIA   +2 more
core   +1 more source