Results 31 to 40 of about 74,121 (304)

Water, oceanic fracture zones and the lubrication of subducting plate boundaries - insights from seismicity [PDF]

open access: yes, 2015
We investigate the relationship between subduction processes and related seismicity for the Lesser Antilles Arc using the Gutenberg-Richter law. This power lawdescribes the earthquakemagnitude distribution, with the gradient of the cumulative magnitude ...
Baptie, B   +8 more
core   +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

A multiphase seismic investigation of the shallow subduction zone, southern North Island, New Zealand [PDF]

open access: yes, 2001
The shallow structure of the Hikurangi margin, in particular the interface between the Australian Plate and the subducting Pacific Plate, is investigated using the traveltimes of direct and converted seismic phases from local earthquakes.
Aki   +38 more
core   +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

Horizontal mantle flow controls subduction dynamics [PDF]

open access: yes, 2017
It is generally accepted that subduction is driven by downgoing-plate negative buoyancy. Yet plate age –the main control on buoyancy– exhibits little correlation with most of the present-day subduction velocities and slab dips. “West”-directed subduction
Dal Zilio, Luca   +3 more
core   +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

Subduction-zone parameters that control slab behavior at the 660-km discontinuity revealed by logistic regression analysis and model selection

open access: yesFrontiers in Earth Science, 2022
The potential mechanisms that drive the behavior of subducted oceanic plates at the 660-km discontinuity are subject to debate. Here we conduct logistic regression analysis and model selection to determine the key subduction-zone parameters in natural ...
Atsushi Nakao   +6 more
doaj   +1 more source

An aseismic slip pulse in northern Chile and along-strike variations in seismogenic behavior [PDF]

open access: yes, 2006
We use interferometric synthetic aperture radar, GPS, and seismic observations spanning 5 to 18 years to reveal a detailed kinematic picture of the spatiotemporal evolution of fault slip in a region corresponding to the 30 July 1995 M_w 8.1 subduction ...
Pritchard, M. E., Simons, M.
core   +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

Juan de Fuca subduction zone from a mixture of tomography and waveform modeling [PDF]

open access: yes, 2012
Seismic tomography images of the upper mantle structures beneath the Pacific Northwestern United States display a maze of high-velocity anomalies, many of which produce distorted waveforms evident in the USArray observations indicative of the Juan de ...
Chu, Risheng   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy