Relevant bibliographies by topics / Global tomography,surface waves,wavelets

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  2. Dissertations / Theses

Academic literature on the topic 'Global tomography,surface waves,wavelets'

Author: Grafiati
Published: 10 March 2023
Last updated: 31 July 2025

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Journal articles on the topic "Global tomography,surface waves,wavelets"

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Syaifuddin, Firman, Andri Dian Nugraha, Zulfakriza, and Shindy Rosalia. "Synthetic Modeling of Ambient Seismic Noise Tomography Data." IOP Conference Series: Earth and Environmental Science 873, no. 1 (2021): 012096. http://dx.doi.org/10.1088/1755-1315/873/1/012096.

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Abstract Ambient seismic noise tomography is one of the most widely used methods in seismological studies today, especially after a comprehensive Earth noise model was published and noise analysis was performed on the IRIS Global Seismographic Network. Furthermore, the Power Spectral Density technique was introduced to identify background seismic noise in the United States. Many studies have been carried out using the ambient seismic noise tomography method which can be broadly grouped into several groups based on the objectives and research targets, such as to determine the structure of the e
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Yuan, Yanhua O., and Frederik J. Simons. "Multiscale adjoint waveform-difference tomography using wavelets." GEOPHYSICS 79, no. 3 (2014): WA79—WA95. http://dx.doi.org/10.1190/geo2013-0383.1.

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Full-waveform seismic inversions based on minimizing the distance between observed and predicted seismograms are, in principle, able to yield better-resolved earth models than those minimizing misfits derived from traveltimes alone. Adjoint-based methods provide an efficient way of calculating the gradient of the misfit function via a sequence of forward-modeling steps, which, using spectral-element codes, can be carried out in realistically complex media. Convergence and stability of full-waveform-difference adjoint schemes are greatly improved when data and synthetics are progressively prese
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Peter, D., C. Tape, L. Boschi, and J. H. Woodhouse. "Surface wave tomography: global membrane waves and adjoint methods." Geophysical Journal International 171, no. 3 (2007): 1098–117. http://dx.doi.org/10.1111/j.1365-246x.2007.03554.x.

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Pan, Wenyong, Zhui Chen, Hong Cao, et al. "Elastic FWI of land W-VSP data: A case study in the Sichuan Basin of China." Leading Edge 44, no. 5 (2025): 414a1–414a7. https://doi.org/10.1190/tle44050414a1.1.

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Elastic full-waveform inversion (FWI) methods are expected to construct high-resolution subsurface elastic properties, which are of great importance for accurately characterizing and delineating hydrocarbon reservoirs. However, elastic FWI for land seismic data is challenging due to low signal-to-noise ratio data, complex near-surface environments, unknown source parameters, etc. In this study, elastic FWI is applied to multicomponent land walkaway vertical seismic profile data acquired in the Sichuan Basin of Southwest Oil and Gas Field in China. A series of methods and strategies are used to
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Dufumier, Hugues, and Jeannot Trampert. "Contribution of seismic tomography in moment-tensor inversions using teleseismic surface-wave spectra." Bulletin of the Seismological Society of America 87, no. 1 (1997): 114–22. http://dx.doi.org/10.1785/bssa0870010114.

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Abstract The knowledge of lateral heterogeneities is crucial for path corrections in moment tensor inversions using surface waves. After some attempts to use regionalized Earth models for very long-period surface-wave moment-tensor inversions, recent tomographic Earth models offer the possibility to make short-period path corrections and therefore retrieve more reliable moment tensors for teleseismic earthquakes. First we try to evaluate the precision required for path corrections in comparison with source effects. Some selected Earth models are tested to evaluate how their results compare to
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deSilva, Susini, and Vernon F. Cormier. "The relative contributions of scattering and viscoelasticity to the attenuation of S waves in Earth's mantle." Solid Earth 11, no. 1 (2020): 161–71. http://dx.doi.org/10.5194/se-11-161-2020.

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Abstract. The relative contributions of scattering and viscoelastic attenuation to the apparent attenuation of seismic body waves are estimated from synthetic and observed S waves multiply reflected from Earth's surface and the core–mantle boundary. The synthetic seismograms include the effects of viscoelasticity and scattering from small-scale heterogeneity predicted from both global tomography and from thermodynamic models of mantle heterogeneity that have been verified from amplitude coherence measurements of body waves observed at dense arrays. Assuming thermodynamic models provide an esti
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Gualtieri, Lucia, Etienne Bachmann, Frederik J. Simons, and Jeroen Tromp. "The origin of secondary microseism Love waves." Proceedings of the National Academy of Sciences 117, no. 47 (2020): 29504–11. http://dx.doi.org/10.1073/pnas.2013806117.

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The interaction of ocean surface waves produces pressure fluctuations at the seafloor capable of generating seismic waves in the solid Earth. The accepted mechanism satisfactorily explains secondary microseisms of the Rayleigh type, but it does not justify the presence of transversely polarized Love waves, nevertheless widely observed. An explanation for two-thirds of the worldwide ambient wave field has been wanting for over a century. Using numerical simulations of global-scale seismic wave propagation at unprecedented high frequency, here we explain the origin of secondary microseism Love w
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Yordkayhun, Sawasdee. "Geophysical Characterization of a Sinkhole Region: A Study toward Understanding Geohazards in the Karst Geosites." Sains Malaysiana 50, no. 7 (2021): 1871–84. http://dx.doi.org/10.17576/jsm-2021-5007-04.

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The outstanding geosites in Satun UNESCO Global Geopark, Thailand are mainly karst topography. Sinkhole which is originated from the dissolution of karst rocks by groundwater or acidic rainwater is one of the potential natural disasters in these geosites. To gain the confident among geotourism, detecting karst features, cavities and surficial dissolution is crucial in risk assessment and sustainable geopark management. As a part of geohazard assessment, non-invasive geophysical methods were applied for detecting near-surface defects and karst features. In this study, electrical resistivity tom
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Zahmatkesh, Homayoon, and Abbas Abedeni. "Non-Parametric Wavelet Functional Analysis for Horizontal and Vertical displacements Derived from GPS Stations in Western Alaska during the Year 2012." Earth Science Research 6, no. 2 (2017): 112. http://dx.doi.org/10.5539/esr.v6n2p112.

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In order to analyze the dynamic processes of the Earth interior and the effect of the propagation of the seismic waves to the surface, a comprehensive study of the Earth crust kinematics is necessary. Although the Global Positing System (GPS) is a powerful method to measure ground displacements and velocities both horizontally and vertically as well as to infer the tectonic stress regime generated by the subsurface processes (from local fault systems to huge tectonic plate movements and active volcanoes), the complexity of the deformation pattern generated during such movements is not always e
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Porritt, Robert W., Thorsten W. Becker, Lapo Boschi, and Ludwig Auer. "Multiscale, radially anisotropic shear wave imaging of the mantle underneath the contiguous United States through joint inversion of USArray and global data sets." Geophysical Journal International 226, no. 3 (2021): 1730–46. http://dx.doi.org/10.1093/gji/ggab185.

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SUMMARY EarthScope's USArray seismic component provided unprecedented coverage of the contiguous United States and has therefore spurred significant advances in tomographic imaging and geodynamic modelling. Here, we present a new global, radially anisotropic shear wave velocity tomography model to investigate upper mantle structure and North American Plate dynamics, with a focus on the contiguous United States. The model uses a data-adaptive mesh and traveltimes of both surface waves and body waves to constrain structure in the crust and mantle in order to arrive at a more consistent represent
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Dissertations / Theses on the topic "Global tomography,surface waves,wavelets"

1

Liu, Kui. "Surface Wave Propagation and Global Crustal Tomography." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/25428.

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In this thesis, a finite-frequency theory is developed to calculate Born sensitivity kernels for Rayleigh-wave phase and amplitude measurements that are valid in regions near seismic stations. Calculations of sensitivity kernels for inter-station measurements show that exact travelling-wave representation of Green tensor is necessary when station spacing is close to or smaller than the seismic wavelength. This finite-frequency theory will allow us to take advantage of dense seismic arrays to obtain high-resolution surface-wave tomography using inter-station measurements. The non-linear dep
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Carannante, S. "Multiresolution Spherical Wavelet Analysis in Global Seismic Tomography." Thesis, 2008. http://hdl.handle.net/2122/8357.

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Every seismic event produces seismic waves which travel throughout the Earth. Seismology is the science of interpreting measurements to derive information about the structure of the Earth. Seismic tomography is the most powerful tool for determination of 3D structure of deep Earth's interiors. Tomographic models obtained at the global and regional scales are an underlying tool for determination of geodynamical state of the Earth, showing evident correlation with other geophysical and geological characteristics. The global tomographic images of the Earth can be written as a linear combinations
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Journal articles
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