Results 21 to 30 of about 1,052 (200)

Seismic waveform inversion for core–mantle boundary topography [PDF]

Geophysical Journal International, 2014
ISSN:0956 ...
Colombi, Andrea, Nissen-Meyer, Tarje, Boschi, Lapo, Giardini, Domenico   +3 more
openaire   +3 more sources

Frequency-Wavenumber Domain Elastic Full Waveform Inversion with a Multistage Phase Correction

Remote Sensing, 2022
Elastic full waveform inversion (EFWI) is essential for obtaining high-resolution multi-parameter models. However, the conventional EFWI may suffer from severe cycle skipping without the low-frequency components in elastic seismic data.
Yong Hu, Li-Yun Fu, Qingqing Li, Wubing Deng, Liguo Han   +4 more
doaj   +1 more source

Seismic prediction technology for thin sandstone reservoir of Dainan Formation in Majiazui Oilfield [PDF]

Youqicang pingjia yu kaifa
Dainan Formation in Majiazui Oilfield is characterized by developed fractures and is primarily composed of structural-lithologic reservoirs. The reservoirs exhibit thin vertical thickness and rapid lateral distribution changes, demanding high precision ...
CHEN Hongcai, LI Zhaorui
doaj   +3 more sources

ASKI: A modular toolbox for scattering-integral-based seismic full waveform inversion and sensitivity analysis utilizing external forward codes

SoftwareX, 2016
Due to increasing computational resources, the development of new numerically demanding methods and software for imaging Earth’s interior remains of high interest in Earth sciences.
Florian Schumacher, Wolfgang Friederich
doaj   +1 more source

Joint Regional Waveform, First-Motion Polarity, and Surface Displacement Moment Tensor Inversion of the 3 September 2017 North Korean Nuclear Test

The Seismic Record, 2021
The 3 September 2017 Mw 5.2 North Korean underground nuclear test (DPRK2017) is the largest man-made explosion with surface displacements observed by Synthetic Aperture Radar (SAR) and showed as much as 3.5 m of horizontal permanent deformation. Although
Rodrigo Chi-Durán, Douglas S. Dreger, Arthur J. Rodgers, Avinash Nayak   +3 more
doaj   +1 more source

Stochastic inversion method based on compressed sensing frequency division waveform indication prior

Frontiers in Earth Science
The stochastic inversion method using logging data as conditional data and seismic data as constraint data has a higher vertical resolution than the conventional deterministic inversion method.
Minmin Huang, Leyi Xu, Yanhui Zhu, Ye He, Zhiye Li, Ying Lin   +5 more
doaj   +1 more source

Resource-Efficient Acoustic Full-Waveform Inversion via Dual-Branch Physics-Informed RNN with Scale Decomposition

Applied Sciences
Full-waveform velocity inversion has long been a primary focus in seismic exploration. Full-waveform inversion techniques employing physics-informed recurrent neural networks (PIRNNs) have recently gained significant scholarly attention.
Cai Lu, Jijun Liu, Liyuan Qu, Jianbo Gao, Hanpeng Cai, Jiandong Liang   +5 more
doaj   +1 more source

Wave Equation‐Based Local Traveltime Inversion

Earth and Space Science, 2020
Full waveform inversion (FWI) is a strongly nonlinear optimization problem, which suffers from cycle skipping when the initial velocity model is not good enough or the seismic data lack low frequencies.
Y. Hu, L. G. Han, Y. S. Liu, Z. Y. Jin
doaj   +1 more source

Full-waveform inversion of short-offset, band-limited seismic data in the Alboran Basin (SE Iberia) [PDF]

Solid Earth, 2019
We present a high-resolution P-wave velocity model of the sedimentary cover and the uppermost basement to ∼3 km depth obtained by full-waveform inversion of multichannel seismic data acquired with a 6 km long streamer in the Alboran Sea (SE
C. Gras, D. Dagnino, C. E. Jiménez-Tejero, A. Meléndez, V. Sallarès, C. R. Ranero, C. R. Ranero   +6 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