Results 11 to 20 of about 2,090 (259)

Deep crust analysis beneath northern Vietnam by using receiver functions: Implications for SE Asia continental extrusion

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2020
The shear-wave velocity structures of the crust and uppermost mantle of northern Vietnam were analyzed using the receiver function (RF) method at 25 broadband stations to investigate the regional crustal structure and its tectonic evolution.
Van-Duong Nguyen   +7 more
doaj   +1 more source

Crustal structure and its tectonic implications beneath the middle–lower Yangtze metallogenic belt in Anhui Province: 3D deep seismic sounding results from airgun source in inland waters

open access: yesFrontiers in Earth Science, 2023
To evaluate the effectiveness of using airguns as seismic sources in inland waters to detect the regional crustal structure, a mobile large-capacity airgun excitation experiment was conducted in October 2015 in the Anhui section of the middle–lower ...
Wenbin Guo   +8 more
doaj   +1 more source

A Feasibility Study on Monitoring Crustal Structure Variations by Direct Comparison of Surface Wave Dispersion Curves from Ambient Seismic Noise

open access: yesInternational Journal of Geophysics, 2020
This work assesses the feasibility of the direct use of surface-wave dispersion curves from seismic ambient noise to gain insight into the crustal structure of Bransfield Strait and detect seasonal seismic velocity changes. We cross-correlated four years
K. Muhumuza
doaj   +1 more source

Three-Dimensional Modeling of the Xichang Crust in Sichuan, China by Machine Learning

open access: yesApplied Sciences, 2022
Seismicity and distribution of earthquakes can provide active fault structural information on the crust at a regional scale. The morphology of faults can be derived from the epicentral distribution of micro-earthquakes.
Li-Wen Gong   +3 more
doaj   +1 more source

Crustal Structure beneath SLY1 Station from Joint Inversion of Receiver Function and Surface Wave Dispersion Analyses, Sulaymaniyah Area, NE Iraq

open access: yesIraqi Geological Journal, 2023
The crustal structure beneath the Sulaymaniyah area in northeast Iraq which is located in a seismically active zone, was investigated and the results were presented in this study. Teleseismic and regional earthquakes recorded by the Sulaymaniyah
Omer Ahmed, Wathiq Abdulnaby
doaj   +1 more source

3-D Crustal Velocity Structure in Northwestern Greece

open access: yesPure and Applied Geophysics, 2005
— The three-dimensional crustal velocity structure in the area of the northwestern Greek mainland was determined by P-wave travel time inversion, applying a two-step tomography procedure. The data set consists of the travel-time residuals of 584 well located earthquakes.
Drakatos, G.   +4 more
openaire   +2 more sources

Advances in the study of seismogenic and occurrence mechanism of strong earthquakes by using seismic tomography

open access: yes地球与行星物理论评, 2022
In this paper, we review the research progress of domestic and foreign scientists on the relationship between the occurrence of strong earthquakes and crustal heterogeneity, and analyze the advantages and problems of the main research methods.
Hongli Li   +4 more
doaj   +1 more source

Crustal and upper mantle velocity structure in Yunnan, Southwest China [PDF]

open access: yesTectonophysics, 2009
Abstract Four wide-angle seismic profiles acquired in analogue form in the 1980s from Yunnan, Southwest China, are re-digitized and re-interpreted for a detailed P-wave velocity structure of the crust and lithospheric mantle. The results reveal that the crust can be divided roughly into upper, middle and lower crusts with bottom depths of 17–25, 26 ...
Zhang, X, Wang, Y
openaire   +2 more sources

Spin Transition of Iron in Deep‐Mantle Ferromagnesite

open access: yesGeophysical Monograph Series, Page 115-125., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Jiachao Liu, Suyu Fu, Jung‐Fu Lin
wiley  

+5 more sources

Characteristics of local earthquake seismograms of varying dislocation sources in a stratified upper crust and modeling for P and S velocity structure: comparison with observations in the Koyna-Warna region, India

open access: yesAnnals of Geophysics, 2016
Vertical component record sections of local earthquake seismograms from a state-of-the-art Koyna-Warna digital seismograph network are assembled in the reduced time versus epicentral distance frame, similar to those obtained in seismic refraction ...
V. G. Krishna
doaj   +1 more source

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