Results 21 to 30 of about 3,299,544 (255)

Waveform inversion of the S reflector west of Spain: fine structure of a detachment fault. [PDF]

, 2005
The S reflection west of Iberia has been interpreted as a low-angle detachment fault separating crustal fault blocks from partially serpentinized mantle. We apply full waveform inversion to investigate the fine structure of S.
Minshull, TA, Reston, Timothy J., Reston, T.J., Leythaeuser, T., Reston, Timothy, Minshull, T.A., Minshull, T. A., Leythaeuser, T   +7 more
core   +1 more source

The imprint of crustal density heterogeneities on regional seismic wave propagation [PDF]

, 2016
Density heterogeneities are the source of mass transport in the Earth. However, the 3-D density structure remains poorly constrained because travel times of seismic waves are only weakly sensitive to density.
A. Fichtner, A. Płonka, Seismology, NWO-VIDI: Full waveform inversion for upper-mantle density structure, Plonka, A.I., Blom, N.A., Fichtner, A., N. Blom   +7 more
core   +2 more sources

Full waveform tomographic images of the peak ring at the Chicxulub impact crater [PDF]

, 2011
17/06/013 PDF version attached, OK to pub.Peak rings are a feature of large impact craters on the terrestrial planets and are generally believed to be formed from deeply buried rocks that are uplifted during crater formation.
Grieve, R. A. F., J. V. Morgan, P. J. Barton, G. L. Christeson, Morgan, J. V., Gulick, S. P. S., Warner, MR, R. A. F. Grieve, Barton, PJ, Christeson, G. L., Grieve, RAF, Warner, M. R., Morgan, JV, M. R. Warner, S. P. S. Gulick, Christeson, GL, Gulick, SPS, Collins, G. S., G. S. Collins, Collins, GS, Barton, P. J.   +20 more
core   +1 more source

Simultaneous Inversion of Layered Velocity and Density Profiles Using Direct Waveform Inversion (DWI): 1D Case

Frontiers in Earth Science, 2022
To better interpret the subsurface structures and characterize the reservoir, a depth model quantifying P-wave velocity together with additional rock’s physical parameters such as density, the S-wave velocity, and anisotropy is always preferred by ...
Zhonghan Liu, Yingcai Zheng, Hua-Wei Zhou   +2 more
doaj   +1 more source

Acoustic 2D full waveform inversion to solve gas cloud challenges

Annals of Geophysics, 2015
The existing conventional inversion algorithm does not provide satisfactory results due to the complexity of propagated wavefield though the gas cloud.
Srichand Prajapati, Deva Ghosh
doaj   +1 more source

Simulation scripts and data for full waveform inversion using spyro

, 2021
Python scripts, meshes, and P-wave velocity models that were used to perform the 2D and 3D full waveform inversion (FWI) experiments documented in the paper titled "Full waveform inversion using triangular waveform-adapted ...
Keith J. Roberts
core   +1 more source

Estimation of 3D vegetation structure from waveform and discrete return airborne laser scanning data [PDF]

, 2012
This study presents and compares new methods to describe the 3D canopy structure with Airborne Laser Scanning (ALS) waveform data as well as ALS point data.
Olofsson, Kenneth,, Lindberg, Eva,, Sveriges lantbruksuniversitet., Olsson, Håkan,, Kenneth Olofsson, Holmgren, Johan,, Håkan Olsson, Johan Holmgren, Olofsson, Kenneth, Lindberg, Eva, Holmgren, Johan, Eva Lindberg, Olsson, Håkan   +12 more
core   +1 more source

A Physics-Based Neural-Network Way to Perform Seismic Full Waveform Inversion

IEEE Access, 2020
Seismic full waveform inversion is a common technique that is used in the investigation of subsurface geology. Its classic implementation involves forward modeling of seismic wavefield based on a certain type of wave equation, which reflects the physics ...
Yuxiao Ren, Xinji Xu, Senlin Yang, Lichao Nie, Yangkang Chen   +4 more
doaj   +1 more source

Source-Independent Waveform Inversion Method for Ground Penetrating Radar Based on Envelope Objective Function

Remote Sensing, 2022
For the full waveform inversion, it is necessary to provide an accurate source wavelet for forwarding modeling in the iteration. The source wavelet estimation method based on deconvolution technology can solve this problem to some extent, but we find ...
Xintong Liu, Sixin Liu, Chaopeng Luo, Hejun Jiang, Hong Li, Xu Meng, Zhihui Feng   +6 more
doaj   +1 more source

Strategies for elastic full waveform inversion

, 2020
The advent of modern supercomputers, in conjunction with larger, more comprehensive datasets, has led to a paradigm shift in seismic imaging. Full waveform inversion is routinely employed as a tool to estimate subsurface properties of the Earth with ...
Matharu, Gian
core   +1 more source