Results 41 to 50 of about 636,438 (150)

Elastic Wave Phase Inversion in the Local-Scale Frequency–Wavenumber Domain with Marine Towed Simultaneous Sources

Journal of Marine Science and Engineering
Elastic full waveform inversion (EFWI) is a crucial technique for retrieving high-resolution multi-parameter information. However, the lack of low-frequency components in seismic data may induce severe cycle-skipping phenomena in elastic full waveform ...
Shaobo Qu, Yong Hu, Xingguo Huang, Jingwei Fang, Zhihai Jiang   +4 more
doaj   +1 more source

Prediction of tight sandstone reservoirs based on waveform indication simulation

地质科技通报, 2022
With the deepening exploratory development, geological targets are gradually shifting from conventional reservoirs to unconventional ones. The sandstone reservoirs in the northeast margin of the Ordos Basin are stacked vertically and change quickly ...
Jia Du, Yancheng Liu, Jiebin Bai, Yingchun Zhang, Liming Lin, Suzhen Shi   +5 more
doaj   +1 more source

Collocated Geotechnical and Geophysical Test Dataset at Three Sites in Napier, New Zealand

Earthquake Spectra, Volume 42, Issue 4, November 2026.
Reliable assessment of liquefaction hazard, particularly in the context of groundwater fluctuations associated with hydroclimatic changes and variability between liquefaction assessment methods, necessitates supplementary data and advanced site characterization methods.
Aavash Ghimire, Kaleigh M. Yost, Andrew Stolte, Rolando Orense, Alfonso Mejia   +4 more
wiley   +1 more source

Post-stack inversion of seismic reflection data from the belvoir coalfield [PDF]

, 1995
Post-Stack inversion of reflection data in seismic exploration can be used to obtain detailed information about lithology variations in the zone of interest. Generalized Linear Inversion (GLI) has previously been applied as a useful tool to achieve this.
Gang, Tian
core  

Curvelet-Based Joint Waveform and Envelope Inversion of Early-Arrival Imaging Shallow Geological Structure

Lithosphere, 2022
Near-surface imaging structures often plays a significant role in the field of environmental and engineering geophysics. Early-arrival waveform inversion (EWI) is state-of-the-art method to imaging near-surface structures due to its high resolution ...
Chao Zhang, Qingxiang Meng, Cheng Li
doaj   +1 more source

Volatile Conduits Beneath Vulcano Island (Italy) Revealed by High‐Resolution Nodal Local Earthquake Tomography During Volcanic Unrest

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Understanding shallow magmatic and hydrothermal systems at active volcanoes is essential for interpreting unrest and forecasting eruptions. We present the first high‐resolution three‐dimensional Vp $Vp$, Vs $Vs$, and Vp/Vs $Vp/Vs$ models of Vulcano Island, Aeolian Islands, Italy, derived from a dense nodal seismic network.
Iván Cabrera‐Pérez, Douglas Sami Stumpp, Sofía Castro, Michaïl Henry, Tullio Ricci, Alessandra Sciarra, Matteo Lupi   +6 more
wiley   +1 more source

Integrated SOM Multi-Attribute Optimization and Seismic Waveform Inversion for Thin Sand Body Characterization: A Case Study of the Paleogene Lower E₃d₂ Sub-Member in the HHK Depression, Bohai Bay Basin

Applied Sciences
Thin-bedded beach-bar reservoirs in the continental faulted basins of eastern China hold significant potential, yet pose challenges for unconventional hydrocarbon development due to their thin-layer characteristics and heterogeneity.
Jing Wang, Dayong Guan, Xiaobo Huang, Youbin He, Hua Li, Wei Xu, Rui Liu, Bin Feng   +7 more
doaj   +1 more source

Estimating the critical angle of top near‐surface layers on the Moon

Near Surface Geophysics, Volume 24, Issue 5, Page 693-704, October 2026.
Abstract Near‐surface characterization of the lunar subsurface is essential for future exploration and infrastructure development, particularly for the construction of underground habitats that provide protection against radiation and micrometeorites. However, conventional seismic approaches for estimating subsurface properties typically rely on prior ...
Nelson Ricardo Coelho Flores Zuniga, Deyan Draganov   +1 more
wiley   +1 more source

Seismic shot-encoding schemes for waveform inversion [PDF]

, 2020
A shot-encoding technique can be used in seismic waveform inversion to significantly reduce the computational cost by reducing the number of seismic simulations in the inversion procedure.
da Costa, Carlos AN, Duarte, Edwin Fagua, Wang, Yanghua, Rao, Ying, de Araújo, João M   +4 more
core   +1 more source

Simulator‐Based Bayesian Inference of Enhanced Geothermal Reservoir Properties

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Inversions of dynamic multi‐scale multi‐physics subsurface system properties rely on the effective sampling of high‐dimensional parameter spaces and are thus notoriously difficult to perform. The associated models are defined by complex nonlinear relationships with potentially stochastic components, which lead to analytically intractable ...
Kwabena Atobra, Gregor Hillers, Vladimir Lyakhovsky, Eyal Shalev, Arto Klami, Ulpu Remes   +5 more
wiley   +1 more source