Results 91 to 100 of about 636,438 (150)

Full Waveform Seismic Inversion for the Japan Region

, 2014
Geophysical Research Abstracts ...
Zukauskaite, Saule, Steptoe, Hamish, Fichtner, Andreas   +2 more
openaire   +2 more sources

Joint seismic/electrical effective medium modelling of hydrate-bearing marine sediments and an application to the Vancouver Island margin [PDF]

, 2008
Remote determination of the hydrate content of marine sediments remains a challenging problem.In the absence of boreholes, the most commonly used approach involves the measurement of Pwavevelocities from seismic experiments.
Best, A.I., Ellis, M.H., Minshull, T.A., Sinha, M.C.   +3 more
core   +1 more source

Full Seismic Waveform Inversion for the Japanese Islands

, 2015
ISSN:1607 ...
Zukauskaite, Saule, Steptoe, Hamish, Fichtner, Andreas   +2 more
openaire   +2 more sources

Three-dimensional joint inversion of traveltime and gravity data across the Chicxulub impact crater

, 2009
In 2005 an extensive new seismic refraction data set was acquired over the central part of the Chicxulub impact crater, allowing us to image its structure with much better resolution than before.
Morgan, J. V., Christeson, G.L., Vermeesch, P. M., Morgan, J.V., Surendra, A., Christeson, G. L., Barton, P.J., Vermeesch, P.M., Barton, P. J.   +8 more
core   +1 more source

Spectral-Element Simulations of 3-D Seismic Wave Propagation and Applications to Source and Structural Inversions [PDF]

, 2006
This thesis presents a concise introduction to the spectral-element method and its applications to the simulation of seismic wave propagation in 3-D earth models.
Liu, Qinya
core   +1 more source

The robustness of seismic moment and magnitudes estimated using spectral analysis [PDF]

, 2014
calculate seismic moment. This is an important topic for operators and regulators who require good magnitude estimates when monitoring induced seismicity.
Verdon, James P, A.L. Stork, J.-M. Kendall, J.P. Verdon, Stork, Anna L, Kendall, J-M   +5 more
core   +1 more source

How Does Neural Network Reparametrization Improve Geophysical Inversion?

Journal of Geophysical Research: Machine Learning and Computation
Full waveform inversion (FWI) is a high‐resolution seismic inversion technique and great efforts have been made to mitigate the multi‐solution problem, such as the traditional total variation (TV) regularization. Different from traditional regularization,
Yuping Wu, Jianwei Ma
doaj   +1 more source

Seismic waveform tomography with shot-encoding using a restarted L-BFGS algorithm

Scientific Reports, 2017
In seismic waveform tomography, or full-waveform inversion (FWI), one effective strategy used to reduce the computational cost is shot-encoding, which encodes all shots randomly and sums them into one super shot to significantly reduce the number of ...
Ying Rao, Yanghua Wang
doaj   +1 more source

Joint full waveform inversion and source localization of virtual and actual passive source seismic data

Scientific Reports
Full waveform inversion (FWI) using passive seismic data offers potential advantages for obtaining deep subsurface structural information. However, its application depends on a reliable background model and accurate source locations. Here, we introduce a
Xujia Shang, Liguo Han, Pan Zhang, Wensha Huang, Donghao Zhang   +4 more
doaj   +1 more source

Comparative study of gradient guided optimization inversion methods for full waveform inversion in seismic exploration

地球与行星物理论评
In order to study the specific application effect of gradient guided optimization methods such as gradient method and conjugate gradient method in the full waveform inversion algorithm flow of seismic exploration, the full waveform inversion algorithm ...
Wen Li, Changsheng Yuan, Yinjuan He
doaj   +1 more source