Post?Seismic to Co?Seismic Moment Ratios for the 2016 Moderate Earthquakes Along Chaman Fault
نویسندگان
چکیده
منابع مشابه
Coseismic and postseismic deformation due to the 2007 M5.5 Ghazaband fault earthquake, Balochistan, Pakistan
Time series analysis of interferometric synthetic aperture radar data reveals coseismic and postseismic surface displacements associated with the 2007 M5.5 earthquake along the southern Ghazaband fault, a major but little studied fault in Pakistan. Modeling indicates that the coseismic surface deformation was caused by ~9 cm of strike-slip displacement along a shallow subvertical fault. The ear...
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Postseismic slip observed after large (M> 6) earthquakes typically has an equivalent moment of a few tens of percent of the coseismic moment. Some observations of the recurrence intervals of repeating earthquakes suggest that postseismic slip following small (M ≲ 4) earthquakes could be much larger—up to 10 or 100 times the coseismic moment. We use borehole strain data from U.S. Geological Surv...
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We use 2004–2011 Envisat synthetic aperture radar imagery and InSAR time series methods to estimate the contemporary rates of strain accumulation in the Chaman Fault system in Pakistan and Afghanistan.At29Nwefind long-termslip ratesof16 ± 2.3mm/yr for theGhazabandFault andof8 ± 3.1mm/yr for the Chaman Fault. This makes the Ghazaband Fault one of themost hazardous faults of the plate boundary zo...
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Vertical deformation of extensional provinces varies significantly and in seemingly contradictory ways. Sparse but robust geodetic, seismic, and geologic observations in the Basin and Range province of the western United States indicate that immediately after an earthquake, vertical change primarily occurs as subsidence of the normal fault hanging wall. A few decades later, a ±100 km wide zone ...
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We consider the effect of permanent stress changes on a velocity strengthening rate-and-state fault, through numerical simulations and analytical results on 1D, 2D and 3D models. We show that slip transients can be triggered by perturbations of size roughly larger than Lb = Gdc/bσ, where G is the shear modulus, dc and b are respectively the characteristic slip distance and the coefficient of th...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2021
ISSN: ['1944-8007', '0094-8276']
DOI: https://doi.org/10.1029/2021gl095236