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The link between great earthquakes and the subduction of oceanic fracture zones [PDF]

open access: yesSolid Earth, 2012
Giant subduction earthquakes are known to occur in areas not previously identified as prone to high seismic risk. This highlights the need to better identify subduction zone segments potentially dominated by relatively long (up to 1000 yr and more ...
R. D. Müller, T. C. W. Landgrebe
doaj   +1 more source

Barium content of Archaean continental crust reveals the onset of subduction was not global

open access: yesNature Communications, 2022
Only subduction zone can produce Ba-rich TTG, representing a proxy for the onset of subduction. Statistical increases in Ba contents of Archaean TTGs reveal the diachronous onset of subduction from regional at 4 Ga to globally complete after 2.7 ...
Guangyu Huang   +4 more
doaj   +1 more source

What Controls Maximum Magnitudes of Giant Subduction Earthquakes?

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Giant earthquakes with magnitudes above 8.5 occur only in subduction zones. Despite the developments made in observing large subduction zone earthquakes with geophysical instruments, the factors controlling the maximum size of these earthquakes are still
Iskander A. Muldashev   +1 more
doaj   +1 more source

Numerical models of slab migration in continental collision zones [PDF]

open access: yesSolid Earth, 2012
Continental collision is an intrinsic feature of plate tectonics. The closure of an oceanic basin leads to the onset of subduction of buoyant continental material, which slows down and eventually stops the subduction process.
V. Magni   +3 more
doaj   +1 more source

Sporadic low-velocity volumes spatially correlate with shallow very low frequency earthquake clusters

open access: yesNature Communications, 2017
In the Nankai subduction zone a low-velocity zone (LVZ) has been detected. Here, the authors present shear wave velocity profiles to show that low frequency earthquakes correlate with the distribution of the LVZ in the Nankai subduction zone.
Takashi Tonegawa   +5 more
doaj   +1 more source

Thermal structure of continental subduction zone: high temperature caused by the removal of the preceding oceanic slab

open access: yesEarth and Planetary Physics, 2021
The thermal structure of the continental subduction zone can be deduced from high-pressure and ultra-high-pressure rock samples or numerical simulation. However, petrological data indicate that the temperature of subducted continental plates is generally
Ting Luo, Wei Leng
doaj   +1 more source

Slow Geodynamics and Fast Morphotectonics in the Far East Tethys

open access: yesGeochemistry, Geophysics, Geosystems, 2022
How can the sluggish, long‐wavelength mantle convection be expressed by so many time and space scales of morphotectonic activity? To investigate these relationships, we explore the Java‐Banda subduction zone, where geodynamic records cluster.
L. Husson   +9 more
doaj   +1 more source

P and S Wave Anisotropic Tomography of the Banda Subduction Zone

open access: yesGeophysical Research Letters, 2023
In subduction zones with slab‐slab interactions, the pattern of mantle convection is very complex and still unclear. In this study, we jointly invert a large number of P and S wave arrival time data of local earthquakes for 3‐D isotropic and anisotropic ...
Yuanyuan Hua, Dapeng Zhao, Yi‐Gang Xu
doaj   +1 more source

The Mesozoic Subduction Zone over the Dongsha Waters of the South China Sea and Its Significance in Gas Hydrate Accumulation

open access: yesJournal of Marine Science and Engineering
The Mesozoic subduction zone over the Dongsha Waters (DSWs) of the South China Sea (SCS) is a part of the westward subduction of the ancient Pacific plate.
Pibo Su, Zhongquan Zhao, Kangshou Zhang
doaj   +1 more source

Bidirectional Loading of the Subduction Interface: Evidence From the Kinematics of Slow Slip Events

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Subduction zones host some of Earth's most damaging natural hazards, including megathrust earthquakes and earthquake‐induced tsunamis. A major control on the initiation and rupture characteristics of subduction megathrust earthquakes is how the coupled ...
K. A. McKenzie   +2 more
doaj   +1 more source

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