Pseudospectral 2D modeling of wave propagation provides a fresh look at receiver function data from the Hellenic subduction zone. It is shown that distinct Moho topography, which is suggested for this complex subduction environment from various geophysical data sets, can provide a conclusive explanation for previously observed “inverted” Moho phases in
Endrun, B. +4 more
openaire +4 more sources
Detailed Moho Topography Beneath the Southern Lhasa Terrane, Tibet by Receiver Functions
The collision of the Indian and Asian plates since about 55Ma has created the most gigantic plateau with the thickest crust of the world. There is, however, no general agreement on the modes of the crustal thickening. Even the crustal thickness of the Tibetan plateau still remains poorly determined. While it is generally accepted that the Tibetan crust
Li, X. +5 more
openaire +2 more sources
High-precision earthquake locations in Switzerland using regional secondary arrivals in a 3-D velocity model [PDF]
We present a new approach to relocate earthquakes in the greater western Alpine region using main crustal phases (Pg, Pn, PmP) that takes advantage of recent developments in P-wave velocity models and modelling of the Moho topography in the region, as ...
Giardini, Domenico +4 more
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Trans-UNet Network for Predicting Bathymetry in South China Sea From Gravity and Geological Data
This article proposes a method for constructing a seafloor topography model based on a Transformer-enhanced U-Net network (Trans-UNet) to improve the accuracy of bathymetry predictions.
Shuai Zhou +6 more
doaj +1 more source
Crustal imaging of the Northwest Himalaya and its foredeep region from teleseismic events
Over 450 receiver functions from 8 broadband stations located in the Indo-Gangetic plain and Northwest Himalayan region are analyzed to examine the crustal properties across the contiguous region.
Sowrav Saikia +4 more
doaj +1 more source
The western Alps : tomography, earthquake location and Moho topography
Les Alpes occidentales, résultat de la collision entre la plaque Eurasie et le promontoire apulien de la plaque Afrique, traversent l'Europe sur près de 1200 km. C'est l'une des chaînes de montagnes les mieux étudiées au monde, notamment par des méthodes d'imagerie géophysique.
openaire +1 more source
Applications of the transmitted Kirchhoff-Holmholtz method to transmitted body waves and possible structural effects at NTS [PDF]
We extend the Kirchhoff-Helmholtz integral method to calculate acoustic potentials which transmit through three-dimensional warped boundaries. We specify the potentials on an arbitrary surface with Snell's law and plane-wave transmission coefficients and
Helmberger, Donald V., Scott, Patricia
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Satellite magnetic modeling of north African hot spots [PDF]
The primary objectives of the MAGSAT mission was to measure the intensity and direction of magnetization of the Earth's crust. A significant effort was directed to the large crustal anomalies first delineated by the POGO mission.
Brown, C. R., Phillips, R. J.
core +1 more source
Local and regional minimum 1D models for earthquake location and data quality assessment in complex tectonic regions: application to Switzerland [PDF]
One-dimensional (1D) velocity models are still widely used for computing earthquake locations at seismological centers or in regions where three-dimensional (3D) velocity models are not available due to the lack of data of sufficiently high quality.
Clinton, John +2 more
core
Shear wave structure of a transect of the Los Angeles basin from multimode surface waves and H/V spectral ratio analysis [PDF]
We use broad-band stations of the ‘Los Angeles Syncline Seismic Interferometry Experiment’ (LASSIE) to perform a joint inversion of the Horizontal to Vertical spectral ratios (H/V) and multimode dispersion curves (phase and group velocity) for both ...
Beroza, Gregory C. +3 more
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