Results 121 to 130 of about 6,189 (221)

Modeling the influence of Moho topography on receiver functions: A case study from the central Hellenic subduction zone

open access: yesGeophysical Research Letters, 2005
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

open access: yes, 2008
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]

open access: yes, 2017
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
core  

Trans-UNet Network for Predicting Bathymetry in South China Sea From Gravity and Geological Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
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

open access: yesGeomatics, Natural Hazards & Risk, 2016
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

open access: yes, 2016
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]

open access: yes, 1985
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
core  

Satellite magnetic modeling of north African hot spots [PDF]

open access: yes
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]

open access: yes, 2018
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]

open access: yes, 2020
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
core  

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