Results 91 to 100 of about 908,118 (242)

Geotechnical design with apparent seismic safety factors well-bellow 1 [PDF]

open access: yes, 2014
The paper demonstrates that whereas often in seismic geotechnical design it is not realistically feasible to design with ample factor of safety against failure as is done in static design, an "engineering" apparent seismic factor of safety less than 1 ...
Gazetas, George   +2 more
core   +1 more source

Seismic scattering signatures of small-scale heterogeneities: examples from the Mount Messenger Formation, New Zealand [PDF]

open access: yes
Heterogeneity that is on a length scale just below that of a seismic wavelength is at the limit of resolution but may still cause significant wave scattering.
Haines, A. J., Hulme, T., Henrys, S. A.
core   +1 more source

Analysis of observation quality changes before and after the renovation of cavern with vertical pendulum

open access: yes地震科学进展
The tide analysis method was used to analyze and assess changes in the quality of the observed data before and after the renovation of cavern with vertical pendulum tiltmeter in Malingshan seismic station.
Xiaohe Zhao   +4 more
doaj   +1 more source

3D velocity-depth model building using surface seismic and well data [PDF]

open access: yes, 1998
The objective of this work was to develop techniques that could be used to rapidly build a three-dimensional velocity-depth model of the subsurface, using the widest possible variety of data available from conventional seismic processing and allowing for
Sexton, Paul
core  

Spatiotemporal characteristics of the energy field and disaster cause of the 2023 Gansu Jishishan M6.2 earthquake

open access: yesGeomatics, Natural Hazards & Risk
Anomalies in the seismic energy field and the temporal and spatial evolution characteristics of seismic energy can be used to improve earthquake predictions and rapid seismic hazard assessments.
Guofu Luo   +4 more
doaj   +1 more source

Earthen construction: structural vulnerabilities and retrofit solutions for seismic actions [PDF]

open access: yes, 2012
Earthen structures present very appealing characteristics regarding a more sustainable practice with the preservation of our natural resources. However, when subjected to earthquake ground motions, this type of construction may present a deficient ...
Oliveira, C. F., Varum, H., Vargas, J.
core  

STRUCTURAL PERFORMANCE ASSESSMENT OF EXISTING BRIDGES IN SEISMIC PRONE AREAS [PDF]

open access: yes, 2011
For the issue of planning construction areas in order of the prevention and mitigation of seismic risk, in addition to emergency management, the scientific community has for decades studies the identification of tools and methodologies for seismic ...
Mancini, Mariella
core   +1 more source

Quantitative study on the characteristics of dynamic vehicle interference to geomagnetic field

open access: yes地震科学进展
In recent years, geomagnetic observation stations have been subjected to more and more serious interference by HVDC transmission, subway, vehicles, etc.
Qin Tian   +4 more
doaj   +1 more source

Effects of mining subsidence observed by time-lapse seismic reflection profiling [PDF]

open access: yes, 1995
Extracting coal from underground mineworkings causes the overlying rocks to subside with associated changes in the stress regime. The aim of the study reported here was to apply the surface seismic reflection method to study the effect of subsidence on ...
Al-Rawahy, Salim Y.S.
core  

Network construction and monitoring capability evaluation of the Shuangfengsi reservoir in Chengde

open access: yes地震科学进展
On June 16, 2021, an ML3.6 earthquake occurred at the Shuangfengsi reservoir in Chengde City, Hebei Province, breaking the relatively calm record of no earthquakes with a magnitude greater than 3.0 in the Chengde area for many years.
Guoxu Yuan, Jiaqi Wang, Wanli Li
doaj   +1 more source

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