Results 61 to 70 of about 1,339 (168)

FEM‐Peridynamic Modelling of Supershear Earthquake Ruptures in Dry and Fluid‐Saturated Media

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Since ground shaking increases with rupture speed during earthquakes, the velocity transition from sub‐Rayleigh to supershear in mode II fracture is crucial for the propagation of seismic ruptures and associated strong ground motions. We employ a newly conceived 2‐dimensional hybrid Finite Element Method and Peridynamic (FEM/PD‐2D) model to ...
Yongkang Shu, Zhenzhong Shen, Tao Ni, Manuele Faccenda, Ugo Galvanetto, Giulio Di Toro, Bernhard A. Schrefler   +6 more
wiley   +1 more source

Stima della potenza dissipata per attrito durante i terremoti: confronto tra faglie sperimentali e naturali. = Estimate of frictional seismic power dissipation from natural and experimental faults. [PDF]

, 2012
In the last decades, several approaches were applied to understand the physics of seismic faulting. In the field, the recognition of pseudotachylytes (solidified friction melts produced during seismic slip) which record seismic ruptures along a fault ...
Castagna, Angela
core  

The tunnel damage effects and implications of the coseismic rupture of the Menyuan MS 6.9 Earthquake in Qinghai, China

, 2023
On January 8, 2022, a magnitude 6.9 earthquake occurred in Menyuan County, Qinghai Province, causing severe deformation and damage to the Da Liang Tunnel of the Lanzhou–Xinjiang high-speed railway, which is the first railway tunnel project broken by ...
YAN Yuan
core   +1 more source

Coherent shift estimation for stacks of SAR images

, 2011
Speckle tracking is used with SAR images to estimate displacements, in ways that support or integrate interferometric measurements. This paper derives Fisher information expressions for the displacement estimation using coherent speckle tracking, for the
De Zan, Francesco, Francesco De Zan
core   +1 more source

Coseismic and Postseismic Crustal Deformation Associated With the 2016 Kumamoto Earthquake Sequence Revealed by PALSAR-2 Pixel Tracking and InSAR

, 2020
Coseismic and postseismic crustal deformations caused by earthquake episodes are important in understanding the mechanisms of these episodes as well as the fault rheology near an epicentral area.
Furuya, Masato, Masato Furuya, Yuji Himematsu, Himematsu, Yuji   +3 more
core   +1 more source

The 2010–2011 South Rigan (Baluchestan) earthquake sequence and its implications for distributed deformation and earthquake hazard in southeast Iran

We investigate the source processes and tectonic significance of two earthquakes that occurred on 2010 December 20 (Mw 6.5) and 2011 January 27 (Mw 6.2) within a desert region south of the town of Rigan, SE Iran. The two earthquakes, which we refer to as
Fielding, E. J., Oveisi, B., Walker, R. T., Ghods, A.-R., Nazari, H., Jackson, J., Ghoraishi, M., Talebian, M., Walters, R. J., Bergman, E. A., Elliott, J. R., Nemati, M.   +11 more
core   +1 more source

Deriving centimeter-level coseismic deformation and fault geometries of small-to-moderate earthquakes from time-series Sentinel-1 SAR images

, 2021
Small-to-moderate earthquakes (e.g. ≤Mw5.5) occur much more frequently than large ones (e.g. >Mw6.0), yet are difficult to study with InSAR due to their weak surface deformation that are severely contaminated by atmospheric delays.
Gong, Jianya, Wang, Teng, Luo, Heng, Wei, Shengji, Liao, Mingsheng   +4 more
core   +1 more source

25‐Second Determination of 2019 Mw 7.1 Ridgecrest Earthquake Coseismic Deformation

, 2020
We have developed a global earthquake monitoring system based on low‐latency measurements from more than 1000 existing Global Navigational Satellite System (GNSS) receivers, of which nine captured the 2019 Mw 6.4 Ridgecrest, California, foreshock and Mw ...
Santillan, Marcelo, Szeliga, Walter, Scivner, Craig W., Melbourne, Timothy I.   +3 more
core   +1 more source

Coseismic surface deformation of the 2014 Napa earthquake mapped by Sentinel-1A SAR and accuracy assessment with COSMO-SkyMed and GPS data as cross validation

International Journal of Digital Earth, 2017
The new land observation satellite Sentinel-1A was launched on 25 April 2014 with a C-band synthetic aperture radar (SAR) sensor, which has the significant enhancements in terms of revisit period and high resolution. The Mw 6.1 Napa, California earthquake occurring on 24 August 2014, almost 4 months after the launch, is the first moderate earthquake ...
Yinghui Yang, Qiang Chen, Qian Xu, Yijun Zhang, Qi Yong, Guoxiang Liu   +5 more
openaire   +2 more sources

Effect of coseismic and postseismic deformation on homogeneous and layered half-space and spherical analysis: Model simulation of the 2006 Java, Indonesia, tsunami earthquake

, 2017
We simulate surface displacements calculated on homogeneous and layered half-space and spherical models as applied to the coseismic and postseismic (afterslip and viscoelastic relaxation) of the 2006 Java tsunami earthquake. Our analysis of coseismic and
Sri Widiyantoro, Nuraini Rahma Hanifa, Endra Gunawan, Irwan Meilano   +3 more
core   +1 more source