Results 31 to 40 of about 2,530 (204)

Slip rates on the Chelungpu and Chushiang thrust faults inferred from a deformed strath terrace along the Dungpuna river, west central Taiwan [PDF]

open access: yes, 2007
The Chelungpu fault produced the September 1999 M_w = 7.6 Chi-Chi earthquake, central Taiwan. The shortening rate accommodated by this structure, integrated over several seismic cycles, and its contribution to crustal shortening across the Taiwanese ...
Bonilla   +45 more
core   +4 more sources

Afterslip of the 2010 Chilean earthquake

open access: yesGeophysical Research Letters, 2010
Analysis of normal‐mode amplitudes excited by the Chilean earthquake of 27 February, 2010, shows that theoretical amplitudes computed for the Global Centroid Moment Tensor solution (GCMT) underestimate observation for frequencies below 1 mHz. Data are systematically larger and there is a hint that this ratio increases toward lower frequencies ...
Toshiro Tanimoto, Chen Ji
openaire   +1 more source

Adjoint-based direct data assimilation of GNSS time series for optimizing frictional parameters and predicting postseismic deformation following the 2003 Tokachi-oki earthquake

open access: yesEarth, Planets and Space, 2020
Postseismic Global Navigation Satellite System (GNSS) time series followed by megathrust earthquakes can be interpreted as a result of afterslip on the plate interface, especially in its early phase.
Masayuki Kano   +3 more
doaj   +1 more source

2010年马乌莱MW8.8地震震后形变三维黏弹性数值模拟

open access: yesDizhen xuebao, 2021
2010年智利马乌莱MW8.8地震发生在纳斯卡板块与南美板块的板块边界处,引起了显著的同震和震后效应。GPS台网数据显示记录到的同震海向位移最大约5 m,垂向沉降最大约50 cm。在经过对俯冲效应、季节变化等效应的校正后,震后6年的海向最大位移约68 cm,垂向抬升最大约20 cm。马乌莱地震显著的震后形变对该区域的地下三维黏弹性结构有良好的约束。本文建立了智利中南部俯冲带区域的三维有限元模型,黏弹性的地幔楔及海洋地幔均使用伯格斯体材料,并在断层面上设置2 km厚的软弱层以模拟震后余滑 ...
Yixing Zhang   +2 more
doaj   +1 more source

Heterogeneous coupling of the Sumatran megathrust constrained by geodetic and paleogeodetic measurements [PDF]

open access: yes, 2008
Geodetic and paleogeodetic measurements of interseismic strain above the Sumatran portion of the Sunda subduction zone reveal a heterogeneous pattern of coupling.
Abercrombie   +98 more
core   +3 more sources

Stress buildup in the Himalaya [PDF]

open access: yes, 2004
The seismic cycle on a major fault involves long periods of elastic strain and stress accumulation, driven by aseismic ductile deformation at depth, ultimately released by sudden fault slip events. Coseismic slip distributions are generally heterogeneous
Avouac, J. P.   +3 more
core   +1 more source

Rupture and Afterslip Controlled by Spontaneous Local Fluid Flow in Crustal Rock

open access: yesJournal of Geophysical Research: Solid Earth, 2023
AbstractShear rupture and fault slip in crystalline rocks like granite produce large dilation, impacting the spatiotemporal evolution of fluid pressure in the crust during the seismic cycle. To explore how fluid pressure variations are coupled to rock deformation and fault slip, we conducted laboratory experiments under upper crustal conditions while ...
Aben, Frans M., Brantut, Nicolas
openaire   +5 more sources

Postseismic afterslip 30 years after the 1978 Tabas-e-Golshan (Iran) earthquake: observations and implications for the geological evolution of thrust belts [PDF]

open access: yes, 2014
This paper presents InSAR observations of postseismic afterslip occurring up to 30 yr after the Mw7.3 1978 Tabas-e-Golshan thrust-faulting earthquake in eastern Iran.
Copley, Alex
core   +4 more sources

Stress transfer and strain rate variations during the seismic cycle [PDF]

open access: yes, 2004
The balance of forces implies stress transfers during the seismic cycle between the elastobrittle upper crust and the viscoelastic lower crust. This could induce observable time variations of crustal straining in the interseismic period.
Avouac, J.-P., Perfettini, H.
core   +2 more sources

Co- and Postseismic Deformation of the 2020 Mw 6.3 Nima (Tibet, China) Earthquake Revealed by InSAR Observations

open access: yesRemote Sensing, 2022
On 22 July 2020, an Mw 6.3 earthquake occurred in Nima County, central Qinghai-Tibet Plateau, China. We used the synthetic aperture radar interferometry (InSAR) technique with Sentinel-1 images to retrieve the line of sight (LOS) coseismic deformation ...
Miaomiao Zhang   +8 more
doaj   +1 more source

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