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Journal Article
Journal: GSA Bulletin
Published: 01 March 2017
GSA Bulletin (2017) 129 (3-4): 304-317.
... of this sliding area. It consists of three E-W–oriented fault sectors that are seismically active and characterized by earthquakes up to 4.7 in magnitude (M) capable of producing ground rupture and damage located mainly along the western and central sectors, and by continuous creep on the eastern sector. A new...
Journal Article
Published: 01 November 2016
Environmental and Engineering Geoscience (2016) 22 (4): 341-351.
... simulation indicated that rear blocks acted on relatively stable key blocks during long-term gravitational creep on the weak interlayer. Strength reduction of the weak interlayer was a key factor in the rockslide occurrence. Ultimately, a three-dimensional limit equilibrium method of stability analysis...
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Journal Article
Journal: Elements
Published: 01 August 2016
Elements (2016) 12 (4): 257-262.
..., the impact of loads and stresses imposed by glaciers, hydrocarbons, and the local hydrogeology. The disadvantages of salt are, however, outweighed by its beneficial properties: high thermal conductivity, good hydro-mechanical properties, and a tendency to creep and thus seal cracks. These characteristics...
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Journal Article
Published: 12 July 2016
Bulletin of the Seismological Society of America (2016) 106 (4): 1887-1899.
... and 20 km from the fault plane and at depths >8 km, increased from 6 events per year prior to 2000 to 20 events per year between the 2000 and the 2004 earthquake. This increase in seismicity coincided with an increase in the rate of nonvolcanic tremor, which, if tremor is indicative of creep...
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Journal Article
Journal: Geology
Published: 01 June 2016
Geology (2016) 44 (6): 459-462.
... to channels is higher than the rate of relative sea-level rise; this sedimentation excess should not occur at steady state or in a regime of accelerated sea-level rise. Here we suggest that lateral erosion and vertical sedimentation on channel banks are linked by creep, the process by which soil is moved...
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Journal Article
Published: 24 May 2016
Bulletin of the Seismological Society of America (2016) 106 (3): 904-911.
.... Including possible biases in the modern estimates due to smoothing and allowing a few percent creep, however, could mitigate this width problem. Given uncertainties in how deep dynamic slip extends during large plate‐boundary earthquakes and in how smoothing affects the total area that slipped for modern...
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Journal Article
Journal: Geophysics
Published: 13 May 2016
Geophysics (2016) 81 (4): D293-D301.
... were mostly caused by the crystal-scale heterogeneity. For the salt structures primarily made of creep-deformed halite, the effect of seismic velocity anisotropy might be negligible for seismic exploration. No significant dispersion of seismic velocities was observed from the low-frequency measurement...
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Journal Article
Published: 01 April 2016
Vadose Zone Journal (2016) 15 (4): vzj2015.09.0132.
..., however with slightly smaller values. The two peaks described in the original study have disappeared with the new calculation. Therefore a direct connection between creep velocity and air and soil temperature cannot be proposed anymore. Nevertheless, we assume that the creep velocity of this rock glacier...
FIGURES
Journal Article
Published: 26 January 2016
Bulletin of the Seismological Society of America (2016) 106 (2): 319-326.
... zone between the shallow fault, which accommodates slip by a combination of aseismic creep and earthquakes (<15  km depth), and the deep fault, which accommodates slip by stable sliding (>35  km depth). However, the spatial relationship between shallow earthquakes and LFEs remains unclear. Here...
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Journal Article
Journal: Geology
Published: 01 January 2016
Geology (2016) 44 (1): e378.
Series: Geological Society, London, Special Publications
Published: 01 January 2016
DOI: 10.1144/SP431.9
EISBN: 9781862399631
...: that is, low equilibrium temperatures, and high values for stress exponent and creep activation energy. However, 4 Ma after break-up (i.e. at 104 Ma), lower crustal viscosities of less than 10 18 Pa s occur at two different locations in the model domain. One of the low-viscosity zones originates at COB 1...
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Journal Article
Published: 01 December 2015
Bulletin of the Seismological Society of America (2015) 105 (6): 2894-2909.
... relations for partially creeping faults. The recent reevaluation of archival accounts by Boatwright and Bundock (2008), together with the growing volume of well-calibrated intensity data from the U.S. Geological Survey “Did You Feel It?” (DYFI) system, provide an opportunity to revisit and refine...
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Journal Article
Journal: Geology
Published: 01 March 2015
Geology (2015) 43 (3): 227-230.
... of feldspathic layers and domains of amphibole + quartz + calcite, which result from hydration reactions of magmatic clinopyroxene. The average grain size in both domains is <25 μm. Microstructural observations and electron backscatter diffraction analysis are consistent with diffusion creep as the dominant...
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Journal Article
Journal: Geology
Published: 01 January 2015
Geology (2015) 43 (1): 19-22.
.... This implies that a large earthquake with an estimated magnitude of ∼M 7.5 is either overdue or will occur within the next 2000–3000 yr along the inferred seismic gap if it is ruptured by a single event. Alternatively, the seismic gap may be explained by aseismic creeping, strain transfer between adjacent...
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Journal Article
Published: 30 December 2014
Bulletin of the Seismological Society of America (2014) 105 (1): 480-488.
...R. Jolivet; T. Candela; C. Lasserre; F. Renard; Y. Klinger; M.‐P. Doin AbstractRecent observations suggesting the influence of creep on earthquakes nucleation and arrest are strong incentives to investigate the physical mechanisms controlling how active faults slip. We focus here on deriving...
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Journal Article
Journal: Geology
Published: 01 June 2014
Geology (2014) 42 (6): 507-510.
... Observatory in central Pennsylvania (USA). In combination with regolith depth measurements and high-resolution topography, these fluxes allow us to evaluate transport rate laws and the efficiency of regolith creep. Concentrations of meteoric 10Be in regolith along six separate transects imply that regolith...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 01 May 2014
GSA Bulletin (2014) 126 (5-6): 680-701.
... dissolution creep. Though the structures described may seem unusual, they are undoubtedly abundant in strongly deformed pseudo-bedded limestone formations. In this example the Thick White Limestone Beds (TWLB) formation displays pervasive “flaggy” pseudo-bedding, which is a diagenetic stylolitic layering...
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Journal Article
Journal: Geology
Published: 01 May 2014
Geology (2014) 42 (5): 435-438.
...Fabrizio Balsamo; Luca Aldega; Nicola De Paola; Igor Faoro; Fabrizio Storti AbstractSeismic slip episodically occurring along shallow creeping faults in poorly lithified sediments represents an unsolved paradox, largely due to our poor understanding of the mechanics governing creeping faults...
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Journal Article
Journal: Geology
Published: 01 March 2014
Geology (2014) 42 (3): 195-198.
... present a model for how fracture and viscous flow within mid-crustal shear zones can produce episodic creep transients. Our model for such transients stems from geological examples of shear zones that formed at temperatures and pressures of >500 °C and >0.6 GPa during early orogenesis, following...
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Journal Article
Published: 01 December 2013
Journal of Environmental and Engineering Geophysics (2013) 18 (4): 269-280.
...Marco Walter; Joan Gomberg; William Schulz; Paul Bodin; Manfred Joswig AbstractIn this study, we describe conditions for slidequake generation at three different creeping softrock landslides: the Slumgullion landslide in the San Juan Mountains, Colorado, U.S., the Heumoes slope in the Austrian...
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