Results 11 to 20 of about 70 (69)
Ambient noise multimode surface wave tomography
Progress in Earth and Planetary ScienceAbstractSeismic techniques using earthquakes are powerful tools for exploring the Earth’s internal structure. However, the earthquake distribution limits the spatial resolution. In recent years, ambient noise surface wave tomography using ambient seismic wave field has resolved these limitations.
Kiwamu Nishida +2 more
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Is ambient noise tomography across ocean basins possible? [PDF]
Geophysical Research Letters, 2006 Based on year‐long cross‐correlations of broad‐band seismic records obtained at sixty‐six stations within or adjacent to the Pacific Basin, we show that broad‐band ambient noise is observed to propagate coherently between island stations and between island and continent stations. For many station pairs, high signal‐to‐noise ratio (SNR) fundamental mode
Lin, Fan-Chi +2 more
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A new stacking technique in ambient noise tomography [PDF]
Earthquake Science, 2010 We have developed a new stacking technique in ambient noise tomography to obtain high-quality dispersion curves of Rayleigh waves. This technique is used to stack the vertical components of the Estimated Green Functions (EGFs) obtained respectively from cross correlation of the ambient noise data recorded by a remote seismic station and one of the ...
Jing Liu +7 more
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Ambient noise tomography with a large seismic array
Comptes Rendus. Géoscience, 2011 The emergence of large-scale arrays of seismometers across several continents presents the opportunity to image the Earth's structure at unprecedented resolution, but methods must be developed to exploit the capabilities of these deployments.
Michael H. Ritzwoller +2 more
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Imaging Alpine crust using ambient noise wave-equation tomography [PDF]
Geophysical Journal International, 2020 SUMMARYWe present an improved crustal Vs model and Moho depth map using ambient noise wave-equation tomography. The so-called ‘ambient noise wave-equation tomography’ is a method to invert seismic ambient noise phase dispersion data based on elastic waveform simulation, which accounts for 3-D and finite-frequency effects.
Lu, Yang +4 more
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Shear-Wave Tomography Using Ocean Ambient Noise with Interference [PDF]
Remote Sensing, 2020 Ambient noise carries abundant subsurface structure information and attracts ever-increasing attention in the past decades. However, there are lots of interference factors in the ambient noise in the real world, making the noise difficult to be utilized in seismic interferometry.
Guoli Wu +3 more
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Western Java Ambient Noise Tomography: A Preliminary Result
Journal of Physics: Conference Series, 2019 Western Java, Indonesia, has at least three important active faults: the Cimandiri, Lembang, and Baribis Faults, which pose a great danger for the cities near them. It is crucial to have a better understanding of shallow crustal structure to delineate active faults and deep basins in order to support seismic hazard and disaster mitigation efforts in ...
Shindy Rosalia +4 more
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Love wave tomography in Italy from seismic ambient noise [PDF]
Earthquake Science, 2010 We estimate Love wave empirical Green’s functions from cross-correlations of ambient seismic noise to study the crust and uppermost mantle structure in Italy. Transverse-component ambient noise data from October 2005 through March 2007 recorded at 114 seismic stations from the Istituto Nazionale di Geofisica e Vulcanologia (INGV) national broadband ...
Hongyi Li +2 more
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A nonlinear multiscale inversion approach for ambient noise tomography
Geophysical Journal International, 2020 SUMMARYAmbient noise tomography (ANT) has been considerably used in the last decade in both academic and industrial research. In this work, we propose an innovative technique for ANT based on nonlinear multiscale inversions. Our method relies on a progressive increase in the model parametrization to reduce the nonlinearity of the inverse problem.
Iván Cabrera-Pérez +5 more
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Crustal structure of Australia from ambient seismic noise tomography [PDF]
Journal of Geophysical Research: Solid Earth, 2012 Surface wave tomography for Australian crustal structure has been carried out using group velocity measurements in the period range 1–32 s extracted from stacked correlations of ambient noise between station pairs. Both Rayleigh wave and Love wave group velocity maps are constructed for each period using the vertical and transverse component of the ...
Saygin, Erdinc, Kennett, Brian
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