Seismic structure of the southeast Australian lithosphere from surface and body wave tomography

2012 ◽  
Vol 572-573 ◽  
pp. 111-122 ◽  
Author(s):  
N. Rawlinson ◽  
S. Fishwick
Keyword(s):  
Body Wave ◽  
Seismic Structure ◽  
Wave Tomography

scholarly journals Upper mantle seismic structure beneath central East Antarctica from body wave tomography: Implications for the origin of the Gamburtsev Subglacial Mountains

2013 ◽  
Vol 14 (4) ◽  
pp. 902-920 ◽  
Author(s):  
Andrew J. Lloyd ◽  
Andrew A. Nyblade ◽  
Douglas A. Wiens ◽  
Samantha E. Hansen ◽  
Masaki Kanao ◽  
...  
Keyword(s):  
Upper Mantle ◽  
Body Wave ◽  
East Antarctica ◽  
Seismic Structure ◽  
Wave Tomography

Seismic Body-Wave Tomography in Fennoscandia

2021 ◽  
Author(s):  
Nevra Bulut ◽  
Valerie Maupin ◽  
Hans Thybo
Keyword(s):  
Velocity Structure ◽  
Body Wave ◽  
Low Frequency ◽  
General Purpose ◽  
Depth Range ◽  
Quality Of Data ◽  
S Waves ◽  
Velocity Models ◽  
The North ◽  
Wave Tomography

<p><span>We present a seismic tomographic image of Fennoscandia based on data from the ScanArray project in Norway, Sweden, and Finland, which operated during 2012-2017, together with data from earlier projects and stationary stations. We use relative traveltime residuals of P- and S- waves in high- and low-frequency bands and apply the frequency-dependent crustal correction. We use seismic signals from earthquakes at epicentral distances between 30° and 104° and magnitudes larger than 5.5. The general purpose of this study is to understand the possible causes of the high topography in Scandinavia along the passive continental margins in the North Atlantic as well as the interrelation between structure at the surface and in the lithospheric mantle.</span></p><p><span>We present an upper-mantle velocity structure for most Fennoscandia derived for the depth range 50-800 km with a 3D multiscale parameterization for an inversion mesh-grid with dimensions </span><em><span>dx</span></em><span>=</span><em><span>dy</span></em><span>=17.38 km and </span><em><span>dz</span></em><span>=23.44 km. In all body-wave tomography methods, smearing of anomalies is expected. Therefore resolution tests are critical for assessing the resolution of the parameters determined in the velocity models. The resolution of the models depends on several factors, including the noise level and general quality of data, the density of observations, the distance and back-azimuthal distribution of sources, the damping applied, and the model parameterization. We use checkerboard and model-driven (block and cylindrical) tests for assessing the resolution of our models.</span></p><p><span>Seismic models derived in this study are compared to existing and past topography to contribute to understanding mechanisms responsible for the topographic changes in the Fennoscandian region. The models also provide a basis for deriving high-resolution models of temperature and compositional anomalies that may contribute to understanding the observed, enigmatic topography.</span></p>

scholarly journals Upper mantle structure of the northeastern Arabian Platform from teleseismic body-wave tomography

2020 ◽  
Vol 307 ◽  
pp. 106549
Author(s):  
Simone Pilia ◽  
Hao Hu ◽  
Mohammed Y. Ali ◽  
Nicholas Rawlinson ◽  
Aiguo Ruan
Keyword(s):  
Upper Mantle ◽  
Body Wave ◽  
Mantle Structure ◽  
Upper Mantle Structure ◽  
Wave Tomography ◽  
Arabian Platform

scholarly journals Supplemental Material: Seismic evidence for craton chiseling and displacement of lithospheric mantle by the Tintina fault in the northern Canadian Cordillera

2020 ◽  
Author(s):  
Clément Estève ◽  
et al.
Keyword(s):  
Lithospheric Mantle ◽  
Body Wave ◽  
Canadian Cordillera ◽  
Length Scale ◽  
Sks Splitting ◽  
Wave Tomography

Methodology for SKS splitting analysis and teleseismic body-wave tomography, calculation of thermal length scale, comparion of NCC with cratonic xenoliths, eight supplemental figures, and a table with compiled estimates.<br>

Seismic structure using body wave arrivals at SOSUS hydrophone arrays

1996 ◽  
Vol 100 (4) ◽  
pp. 2639-2639
Author(s):  
Philip D. Slack ◽  
Christopher G. Fox ◽  
Robert P. Dziak
Keyword(s):  
Body Wave ◽  
Seismic Structure
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