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oint Inversion of the 3D P Wave Velocity Structure of the Crust and Upper Mantle under the Southeastern Margin of the Tibetan Plateau Using Regional Earthquake and Teleseismic Data
3D P-wave velocity structure China seismic array detection Panxi region Chuan-Dian Block Daliangshan Block southeastern margin of Qinghai–Tibet Plateau
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2018/4/10
The special seismic tectonic environment and frequent seismicity in the southeastern margin of the Qinghai–Tibet Plateau show that this area is an ideal location to study the present tectonic movement...
Strain pattern of the Southern Tyrrhenian slab from moment tensors of deep earthquakes:implications on the down-dip velocity
southern tyrrhenian seimin strain rate tensor down-dip velocity aseismic subduction
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2015/9/28
Seismic strain is analysed along the slab face of the Southern Tyrrhenian subduction zone using focal mechanisms of deep earthquakes which occurred in the period 1960-1998. Results show that the slab ...
Low velocity and low electricalresistivity layers in the middle crust
seismic and electromagnetic studies Earth's crust Baltic and Ukranian shields
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2015/9/14
Some Deep Seismic Sounding (DSS) revealed low velocity layers in the upper and middle crust of old platforms.The layers are often characterised by a lower electrical resistivity. It is not clear, howe...
Shear-wave velocity structure at Mt. Etna from inversion of Rayleigh-wave dispersion patterns (2 s < T < 20 s)
Mount Etna Rayleigh-wave dispersion S-wave velocity modeL Non-linear inversion Triangle method
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2015/8/28
In the present study, we investigated the dispersion characteristics of medium-to-long period Rayleigh waves (2 s < T < 20 s) using both single-station techniques (multiple-filter analysis, and phase-...
Faulting mechanism of the Campania–Lucania 1980 earthquake, Italy, from high-resolution, 3D velocity structure, aftershock relocation, fault-plane solutions, and post-seismic deformation modeling
Campania-Lucania 1980 earthquake analyses of the post-seismic data
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2015/8/27
This study performs a detailed reconstruction of the rupture mechanism of the 1980 Campania–Lucania (southern Italy) earthquake. This is achieved by relocation of the main event through computation of...
Crust and upper mantle velocity structure of the northwestern Indian Peninsular Shield from inter-station phase velocities of Rayleigh and Love waves
mantle velocity Indian Peninsular Shield
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2015/8/17
We measure the inter-station Rayleigh and Love wave phase velocities
across the northwestern Indian Peninsular shield (NW-IP) through crosscorrelation
and invert these velocities to evaluate the und...
Crust and upper mantle velocity structure of the northwestern Indian Peninsular Shield from inter-station phase velocities of Rayleigh and Love waves
Cratons Surface waves Lithosphere-Asthenosphere boundary Indian Peninsular shield
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2015/8/14
We measure the inter-station Rayleigh and Love wave phase velocities across the northwestern Indian Peninsular shield (NW-IP) through cross-correlation and invert these velocities to evaluate the unde...
Empirical relationships of shear wave velocity,SPT-N value and vertical effective stress for different soils in Mashhad,Iran
Shear wave velocity Vertical effective stress Standard penetration test Downhole test, Empirical relations Mashhad Iran
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2015/8/14
Shear wave velocity, Vs, is one of the important input parameters in seismic response analysis of the ground. Various methods have been examined to measure the soil Vs directly. Direct measurement of ...
Asymmetry of high-velocity lower crust on the South Atlantic rifted margins and implications for the interplay of magmatism and tectonics in continental breakup
The lower crust seaward - dipping reflector devonian volcanic edge seismic refraction
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2015/1/6
High-velocity lower crust (HVLC) and seaward-dipping reflector (SDR) sequences are typical features of volcanic rifted margins. However, the nature and origin of HVLC is under discussion. Here we prov...
Velocity structure and the role of fluids in the West Bohemia Seismic Zone
Double difference fault three-dimensional structure seismic belt regional earthquakes earthquake focal mechanism
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2015/1/6
In this study, we apply the double-difference tomography to investigate the detailed 3-D structure within and around the Novy Kostel Seismic Zone, an area in the Czech Republic known for frequent occu...
Constraining fault interpretation through tomographic velocity gradients: application to northern Cascadia
Constraining fault interpretation velocity gradients
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2015/1/4
Spatial gradients of tomographic velocities are
seldom used in interpretation of subsurface fault structures.
This study shows that spatial velocity gradients can be used
effectively in identifying...
Constraining fault interpretation through tomographic velocity gradients: application to northern Cascadia
Constraining fault interpretation tomographic velocity gradients northern Cascadia
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2015/1/4
Spatial gradients of tomographic velocities are seldom used in interpretation of subsurface fault structures. This study shows that spatial velocity gradients can be used effectively in identifying su...
Tomography of core-mantle boundary and lowermost mantle coupled by geodynamics: joint models of shear and compressional velocity
Composition and state Geological and geophysical evidences of deep processes
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2015/8/18
We conduct joint tomographic inversions of P and S travel time observations to obtain models of delta v_P and delta v_S in the entire mantle. We adopt a recently published method which takes into acc...
Crustal velocity structure of the Deccan Volcanic Province, Indian Peninsula, from observed surface wave dispersion
Deccan Volcanic Province Surface waves Crustal structure
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2015/8/18
Through inversion of fundamental mode group velocities of Love and Rayleigh waves, we study the crustal and subcrustal structure across the central Deccan Volcanic Province (DVP), which is one of the ...
Spurious velocity changes caused by temporal variations in ambient noise frequency content
Time-series analysis Interferometry Surface waves and free oscillations Coda waves
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2014/4/10
Ambient seismic noise cross-correlations are now being used to detect temporal variations of seismic velocity, which are typically on the order of 0.1 per cent. At this small level, temporal variation...