scholarly journals Broad-band Rayleigh wave tomography of Taiwan and its implications on gravity anomalies

2012 ◽  
Vol 39 (5) ◽  
pp. n/a-n/a ◽  
Author(s):  
Tzu-Ying Huang ◽  
Yuancheng Gung ◽  
Wen-Tzong Liang ◽  
Ling-Yun Chiao ◽  
Louis S. Teng
Keyword(s):  
Rayleigh Wave ◽  
Broad Band ◽  
Gravity Anomalies ◽  
Wave Tomography ◽  
Rayleigh Wave Tomography

scholarly journals Deep structure of the Hellenic lithosphere from teleseismic Rayleigh-wave tomography

2020 ◽  
Vol 221 (1) ◽  
pp. 205-230 ◽  
Author(s):  
I Kassaras ◽  
V Kapetanidis ◽  
A Karakonstantis ◽  
P Papadimitriou
Keyword(s):  
Rayleigh Wave ◽  
Upper Mantle ◽  
Broad Band ◽  
Shear Velocity ◽  
Velocity Model ◽  
Benioff Zone ◽  
Correlation Technique ◽  
Phase Velocity Dispersion ◽  
Wave Tomography ◽  
Rayleigh Wave Tomography

SUMMARY This research provides new constraints on the intermediate depth upper-mantle structure of the Hellenic lithosphere using a three-step Rayleigh-wave tomography. Broadband waveforms of about 1000 teleseismic events, recorded by ∼200 permanent broad-band stations between 2010 and 2018 were acquired and processed. Through a multichannel cross-correlation technique, the fundamental mode Rayleigh-wave phase-velocity dispersion curves in the period range 30–90 s were derived. The phase-velocities were inverted and a 3-D shear velocity model was obtained down to the depth of 140 km. The applied method has provided 3-D constraints on large-scale characteristics of the lithosphere and the upper mantle of the Hellenic region. Highlighted resolved features include the continental and oceanic subducting slabs in the region, the result of convergence between Adria and Africa plates with the Aegean. The boundary between the oceanic and continental subduction is suggested to exist along a trench-perpendicular line that connects NW Peloponnese with N. Euboea, bridging the Hellenic Trench with the North Aegean Trough. No clear evidence for trench-perpendicular vertical slab tearing was resolved along the western part of Hellenic Subduction Zone; however, subcrustal seismicity observed along the inferred continental–oceanic subduction boundary indicates that such an implication should not be excluded. The 3-D shear velocity model supports an N–S vertical slab tear beneath SW Anatolia that justifies deepening, increase of dip and change of dip direction of the Wadati-Benioff Zone. Low velocities found at depths <50 km beneath the island and the backarc, interrelated with recent/remnant volcanism in the Aegean and W. Anatolia, are explained by convection from a shallow asthenosphere.

A strategy for obtaining travel time in 3-D Rayleigh wave tomography

2022 ◽  
Vol 167 ◽  
pp. 108594
Author(s):  
Guang-Heng Luo ◽  
Jian-Wen Pan ◽  
Jin-Ting Wang ◽  
Feng Jin
Keyword(s):  
Rayleigh Wave ◽  
Travel Time ◽  
Wave Tomography ◽  
Rayleigh Wave Tomography

scholarly journals A first detailed look at the Greenland lithosphere and upper mantle, using Rayleigh wave tomography

2004 ◽  
Vol 158 (1) ◽  
pp. 267-286 ◽  
Author(s):  
Fiona A. Darbyshire ◽  
Tine B. Larsen ◽  
Klaus Mosegaard ◽  
Trine Dahl-Jensen ◽  
Ólafur Gudmundsson ◽  
...  
Keyword(s):  
Rayleigh Wave ◽  
Upper Mantle ◽  
Wave Tomography ◽  
Rayleigh Wave Tomography

Crustal and upper mantle structure of South China from Rayleigh wave tomography

2016 ◽  
pp. ggw477
Author(s):  
B. Shan ◽  
X. Xiong ◽  
K. F. Zhao ◽  
Z. J. Xie ◽  
Y. Zheng ◽  
...  
Keyword(s):  
Rayleigh Wave ◽  
South China ◽  
Upper Mantle ◽  
Mantle Structure ◽  
Upper Mantle Structure ◽  
Wave Tomography ◽  
Rayleigh Wave Tomography
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