Results 11 to 20 of about 1,287 (206)

Modeling the Contribution of Poroelastic Deformation to Postseismic Geodetic Signals

Geophysical Research Letters, 2020
AbstractTo constrain the poroelastic component of postseismic deformation, we model the subsurface hydrologic response to the Mw 7.6 subduction zone earthquake that occurred on the plate interface beneath the Nicoya peninsula in Costa Rica on 5 September 2012. The model shows that poroelastic relaxation occurs on multiple time scales and the associated
Kimberly Mccormack, Marc A Hesse, Timothy H Dixon   +2 more
exaly   +5 more sources

Heterogeneous rheology controlled postseismic deformation of the 2011 Tohoku‐Oki earthquake

Geophysical Research Letters, 2016
Using two‐dimensional finite element modeling, we reproduced the observed postseismic deformation of the 2011 Tohoku‐Oki earthquake. Our model, which accounts for the lithosphere‐asthenosphere boundary and weak zones beneath volcanoes, was able to ...
Jun Muto, Bunichiro Shibazaki, Takeshi Iinuma, Yoshihiro Ito, Yusaku Ohta, Satoshi Miura, Yoshihiko Nakai   +6 more
doaj   +3 more sources

Postseismic deformation following the 1991 Racha, Georgia, earthquake [PDF]

Geophysical Research Letters, 2007
The 1991, Ms = 7.0 Racha earthquake is the largest ever recorded in the Caucasus Mountains. Approximately three months after this thrust‐faulting earthquake, a GPS network was set up to measure postseismic surface deformation. We present an analysis of these data, which indicate accelerated postseismic motions at several near‐field sites. We model this
Podgorski, J., Hearn, E., McClusky, Simon, Reilinger, Robert, Taymaz, Tuncay, Tan, O., Prilepin, M., Guseva, T., Nadariya, M.   +8 more
core   +6 more sources

INCORPORATING INDEPENDENT COMPONENT ANALYSIS AND MULTI-TEMPORAL SAR TECHNIQUES TO RETRIEVE RAPID POSTSEISMIC DEFORMATION [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
This study investigates the ongoing postseismic deformation induced by two moderate mainshocks of Mw 6.1 and Mw 6.0, 2017 Hojedk earthquake in Southern Iran. Available Sentinel-1 TOPS C-band Synthetic Aperture Radar (SAR) images over about one year after
S. Vajedian
doaj   +3 more sources

Influences of the heterogeneity of viscoelastic medium on postseismic deformation of the 2008 MW7.9 Wenchuan earthquake

Geodesy and Geodynamics, 2022
The study of postseismic deformation is important for constraining the viscoelastic properties of the Earth and inverting the post-earthquake process. The levelling survey revealed that the area near Beichuan elevated 5.3 cm about two years after the MW7.
Feng Li, Peng Zhai, Jinshui Huang, Hongbo Tan   +3 more
doaj   +3 more sources

Interplate rheological contrast revealed by asymmetric deformation after the 2023 Kahramanmaraş earthquakes [PDF]

Nature Communications
Postseismic surface deformation offers key insights into subsurface lithospheric rheology and earthquake fault behavior, yet geodetic data often fail to capture its full complexity.
Jihong Liu, Sigurjón Jónsson, Xing Li, Wenqian Yao, Yann Klinger   +4 more
doaj   +2 more sources

Kinematic Representations of Viscoelastic Postseismic Deformation

Earth and Space Science
AbstractFollowing large earthquakes, viscoelastic stress relaxation may contribute to postseismic deformation observed at Earth's surface. Mechanical representations of viscoelastic deformation require a constitutive relationship for the lower crust/upper mantle material where stresses are diffused and, for non‐linear rheologies, knowledge of absolute ...
John P. Loveless, Brendan J. Meade
openaire   +3 more sources

PRELIMINARY ESTIMATION OF POSTSEISMIC DEFORMATION PARAMETERS FROM CONTINUOUS GPS DATA IN KOREA PENINSULA AND IEODO AFTER THE 2011 TOHOKU-OKI MW9.0 EARTHQUAKE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
This paper describes utilization of GPS data in Korea Peninsula and IEODO ocean research station for investigation of postseismic deformation characteristic after the 2011 Tohoku-oki Mw9.0 Earthquake. Analytical logarithmic and exponential functions were
W. A. W. Aris, T. A. Musa, H. Lee, Y. Choi, H. Yoon   +4 more
doaj   +2 more sources

Unravelling the contribution of early postseismic deformation using sub-daily GNSS positioning. [PDF]

Sci Rep, 2019
AbstractAfter large earthquakes, parts of the fault continue to slip for days to months during the afterslip phase, a behaviour documented for many earthquakes. Yet, little is known about the early stage, i.e., from minutes to hours after the mainshock.
Twardzik C, Vergnolle M, Sladen A, Avallone A.   +3 more
europepmc   +4 more sources

Early Postseismic Deformation of the 2010 Mw 6.9 Yushu Earthquake and Its Implication for Lithospheric Rheological Properties

Geophysical Research Letters, 2022
We used the 250‐day postseismic displacements derived from Global Positioning System data to explore various postseismic deformation processes of the 14 April 2010 Mw 6.9 Yushu earthquake, including the afterslip of the fault, viscoelastic relaxation in ...
Yunguo Chen, Yan Hu, Liang Qian, Guojie Meng   +3 more
doaj   +2 more sources