Results 11 to 20 of about 636,438 (150)

Characterising ice slabs in firn using seismic full waveform inversion, a sensitivity study [PDF]

Journal of Glaciology, 2023
The density structure of firn has implications for hydrological and climate modelling, and ice-shelf stability. The structure of firn can be evaluated from depth models of seismic velocity, widely obtained with Herglotz–Wiechert inversion (HWI), an ...
Emma Pearce, Adam D. Booth, Sebastian Rost, Paul Sava, Tuğrul Konuk, Alex Brisbourne, Bryn Hubbard, Ian Jones   +7 more
doaj   +2 more sources

Seismic full waveform inversion in archaeological prospecting [PDF]

, 2023
Seismic full waveform inversion is introduced as novel high-resolution imaging tool in archaeological prospection. The full waveform inversion approach allows the high-resolution characterization of low-contrast sedimentary layers, high-contrast stone wall structures and air-filled cavities.
Daniel Köhn, Manuel Zolchow, Rebekka Mecking, Dennis Wilken, Tina Wunderlich, Denise De Nil, Wolfgang Rabbel   +6 more
openaire   +3 more sources

Time-lapse seismic attenuation as a tool for monitoring hydrocarbons and CO2 in geological materials [PDF]

, 2011
Both laboratory experiments and theoretical models have shown seismic attenuation to be sensitive to various petrophysical properties of rock and pore fluids, making attenuation a potentially useful time-lapse attribute to measure and interpret through ...
Blanchard, Thomas David
core   +6 more sources

Source-independent full-waveform inversion of seismic data [PDF]

Geophysics, 2003
Abstract A rigorous full-waveform inversion of seismic data has been a challenging subject, partly because of the lack of precise knowledge of the source. Since currently available approaches involve some form of approximations to the source, inversion results are subject to the quality and choice of the source information used.
Lee, Ki Ha, Kim, Hee Joon
openaire   +3 more sources

Envelope-based constrained model for multiparameter pre-stack seismic inversion

Journal of Petroleum Exploration and Production Technology, 2022
Pre-stack seismic inversion is an effective method to estimate multiparameter from seismic reflection data in the oil–gas reservoir exploration. In order to get a reliable inverted parameter result, a constrained model is commonly used to reduce the ...
Junzhen Shan, Guochen Wu, Sen Yang, Hongying Liu   +3 more
doaj   +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

Full waveform inversion with combined misfit functions and application in land seismic data

Frontiers in Earth Science, 2023
Full waveform inversion reconstructs subsurface structures by matching the synthetic waveform to the observed waveform. Inaccuracy of the source wavelets can, thus, easily lead to an inaccurate model.
Jianyong Song, Zhifang Yang, Hong Cao, Weiguang He, Wenyong Pan, Meng Li, Na Tian   +6 more
doaj   +1 more source

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

Data-Driven Seismic Waveform Inversion: A Study on the Robustness and Generalization [PDF]

IEEE Transactions on Geoscience and Remote Sensing, 2020
Acoustic- and elastic-waveform inversion is an important and widely used method to reconstruct subsurface velocity image. Waveform inversion is a typical non-linear and ill-posed inverse problem. Existing physics-driven computational methods for solving waveform inversion suffer from the cycle skipping and local minima issues, and not to mention ...
Zhongping Zhang, Youzuo Lin
openaire   +2 more sources

Estimation of gas hydrate concentration from multi-component seismic data at sites on the continental margins of NW Svalbard and the Storegga region of Norway [PDF]

, 2008
High-resolution seismic experiments, employing arrays of closely spaced, four-component ocean-bottom seismic recorders, were conducted at a site off western Svalbard and a site on the northern margin of the Storegga slide, off Norway to investigate how ...
Mienert, J., Chand, S., Westbrook, Graham, Reston, Timothy J., Haacke, R. R., Gei, D., Carcione, JM, Dean, S, Mienert, Jürgen, Gei, D, Minshull, TA, Westbrook, G.K., Madrussani, G, Long, C, Reston, T.J., Westbrook, G. K., Flueh, E., Carcione, J.M., Peacock, S., Foucher, JP, Peacock, S, Bünz, S., Carcione, J. M., Flueh, E, Zillmer, Matthias, Zillmer, M, Camerlenghi, A, Rossi, G., Flueh, Ernst R., Chand, S, Foucher, J-P., Haacke, R.R., Minshull, T. A., Vanneste, M, Haacke, RR, Buenz, S, Minshull, T.A., Nouze, H, Camerlenghi, A., Dean, S., Nouzé, H., Rossi, G, Mienert, J, Reston, Timothy, Long, C., Vanneste, M., Foucher, J.-P., Madrussani, G., Zillmer, M.   +48 more
core   +1 more source