scholarly journals MACROSEISMICITY AND GEOLOGICAL EFFECTS OF THE WENCHUAN EARTHQUAKE (MS 8.0R - 12 MAY 2008), SICHUAN, CHINA: MACRO-DISTRIBUTION AND COMPARISON OF EMS1998 AND ESI2007 INTENSITIES

2017 ◽  
Vol 43 (3) ◽  
pp. 1361 ◽  
Author(s):  
E. Lekkas
Keyword(s):  
Wenchuan Earthquake ◽  
Comparative Evaluation ◽  
Large Scale ◽  
Seismic Intensity ◽  
Tectonic Structures ◽  
Seismic Fault ◽  
The Wenchuan Earthquake ◽  
Event Based ◽  
Seismic Hazard Estimation

The Wenchuan earthquake of the 12th of May 2008, in Sichuan county of China can be classified as a large scale event based on the tectonic structures that triggered the earthquake and the effects caused on the human, structural and natural environment. The aim of this paper is to present the geotectonic and seismotectonic regime of the earthquake affected region based on field data along the seismic fault zone and an attempt is made towards the: (i) estimation of the intensity values according to EMS1998 (European Microseismic Scale, 1998) and ESI2007 (Environmental Seismic Intensity Scale, 2007) and the determination of their geographical distribution in a macroscale, (ii) interpretation of the intensity values data and their distribution according to the seismotectonic, geodynamic and geotechnical regime, and (iii) conduction of a comparative evaluation review on the application of both EMS1998 and ESI2007. The application of both EMS1998 and ESI2007 and the comparative evaluation of the results indicate that the estimated values of EMS1998 and ESI2007 were almost in agreement, despite the fact that the geographical locations of assessment data were different suggesting that the application and use of both scales appears to represent a useful and reliable tool for seismic hazard estimation.

The Practical Research of Engineering Materials for the Temporary House after Earthquake

2014 ◽  
Vol 978 ◽  
pp. 27-30
Author(s):  
Si Ru Qian
Keyword(s):  
Wenchuan Earthquake ◽  
Large Scale ◽  
Earthquake Disaster ◽  
The Wenchuan Earthquake ◽  
Disaster Area ◽  
Practical Research ◽  
Engineering Materials ◽  
First Time ◽  
Large Scale Project

After the WenChuan earthquake in may 12,2008,Many province government built the temporary houses for earthquake disaster area.For the first time, they initiate such large scale project, there are many problems emerged during the process of construction such problem like economy ,environment, engineering materials and technology. In this article, we collect problems and analysis them ,seek for the possible measures of construct the temporary house and the effective way to rebuilt the disaster area.

Study on Instrumental Intensity Using Wenchuan Earthquake Records

2012 ◽  
Vol 226-228 ◽  
pp. 2235-2239
Author(s):  
Ming Zhang ◽  
Yu Zhang ◽  
Guang Chun Zhou
Keyword(s):  
Wenchuan Earthquake ◽  
Peak Ground Acceleration ◽  
Seismic Intensity ◽  
Peak Ground Velocity ◽  
Regression Equations ◽  
Ground Acceleration ◽  
Earthquake Records ◽  
The Wenchuan Earthquake ◽  
Instrumental Intensity ◽  
Seismic Intensity Scale

This paper invesigates the peak ground acceleration (PGA) and peak ground velocity (PGV) regression equations as well as the PGA or PGV middle values in Chinese seismic intensity scale 2008 (the CSIS 2008), using the Wenchuan earthquake records of China with the full seismic information. Based on the analytical results, the PGA-V method is proposed to assess the instrumental intensity which combines both PGA and PGV. Besides, a problem is raised to further verify and modify the middle values of PGA or PGV for the seismic intensity VI and VII in the CSIS 2008.

Comparison of Injury Epidemiology Between the Wenchuan and Lushan Earthquakes in Sichuan, China

2014 ◽  
Vol 8 (6) ◽  
pp. 541-547 ◽  
Author(s):  
Yang Hu ◽  
Xi Zheng ◽  
Yong Yuan ◽  
Qiang Pu ◽  
Lunxu Liu ◽  
...  
Keyword(s):  
Wenchuan Earthquake ◽  
Brain Injuries ◽  
Medical Center ◽  
Seismic Intensity ◽  
Lushan Earthquake ◽  
Anatomical Location ◽  
Trauma Centers ◽  
Patient Admissions ◽  
The Wenchuan Earthquake ◽  
The Relationship

AbstractObjectiveWe aimed to compare injury characteristics and the timing of admissions and surgeries in the Wenchuan earthquake in 2008 and the Lushan earthquake in 2013.MethodsWe retrospectively compared the admission and operating times and injury profiles of patients admitted to our medical center during both earthquakes. We also explored the relationship between seismic intensity and injury type.ResultsThe time from earthquake onset to the peak in patient admissions and surgeries differed between the 2 earthquakes. In the Wenchuan earthquake, injuries due to being struck by objects or being buried were more frequent than other types of injuries, and more patients suffered injuries of the extremities than thoracic injuries or brain trauma. In the Lushan earthquake, falls were the most common injury, and more patients suffered thoracic trauma or brain injuries. The types of injury seemed to vary with seismic intensity, whereas the anatomical location of the injury did not.ConclusionsGreater seismic intensity of an earthquake is associated with longer delay between the event and the peak in patient admissions and surgeries, higher frequencies of injuries due to being struck or buried, and lower frequencies of injuries due to falls and injuries to the chest and brain. These insights may prove useful for planning rescue interventions in trauma centers near the epicenter. (Disaster Med Public Health Preparedness. 2014;8:541-547)

scholarly journals Relationship between Damage Rate of High-Voltage Electrical Equipment and Instrumental Seismic Intensity

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Rushan Liu ◽  
Mingpan Xiong ◽  
Deyuan Tian
Keyword(s):  
Distribution Function ◽  
Wenchuan Earthquake ◽  
Gaussian Distribution ◽  
High Voltage ◽  
Circuit Breaker ◽  
Electrical Equipment ◽  
Seismic Intensity ◽  
Damage Rate ◽  
The Wenchuan Earthquake ◽  
Gaussian Distribution Function

Based on the actual damage data of high-voltage electrical equipment in electric substations in the Wenchuan earthquake, this paper uses the cumulative Gaussian distribution function to describe the relationship between the damage rate of high-voltage electrical equipment and the instrumental seismic intensity. The instrumental seismic intensity at strong motion observation stations in the Wenchuan earthquake is calculated, and the Kriging interpolation method is used to estimate the instrumental seismic intensity at 110 kV and above voltage level substations in Mianyang, Deyang, Guangyuan, and Chengdu of Sichuan Province. A cumulative Gaussian distribution function is then used to fit the damage rate-instrumental seismic intensity relationship curve for six types of high-voltage electrical equipment such as the transformer, circuit breaker, voltage mutual inductor, current mutual inductor, isolating switch, and lightning arrester. The results show that transformers have the highest vulnerability during earthquakes, and they suffered a certain level of damage even under low instrumental intensity. The second most vulnerable equipment is the circuit breaker, followed by the lightning arrester, transformer, and isolating switch, which share a similar vulnerability curve.

Landslide hazard assessment of the 2008 Wenchuan earthquake: a case study in Beichuan area

2011 ◽  
Vol 48 (1) ◽  
pp. 128-145 ◽  
Author(s):  
Chuan Tang ◽  
Jing Zhu ◽  
Xin Qi
Keyword(s):  
Wenchuan Earthquake ◽  
Large Scale ◽  
Landslide Hazard ◽  
Landslide Risk ◽  
Reconstruction Process ◽  
2008 Wenchuan Earthquake ◽  
Landslide Occurrence ◽  
The Wenchuan Earthquake ◽  
Very High ◽  
Earthquake Area

The Wenchuan earthquake (magnitude Ms = 8.0) of 12 May 2008 triggered widespread and large-scale landslides over an area of about 50 000 km2. A study was undertaken to determine the primary factors associated with seismic landslide occurrence. An index-based approach used to assess earthquake-triggered landslide hazard in the central part of the Wenchuan earthquake area affected is described. Slope gradient, relief amplitude, lithology, bedding–slope relations, fault proximity, stream proximity, and antecedent rainfall are recognized as factors that may have had an important influence on landslide occurrence. The assessment of the influence of each of these factors is presented through use of a series of maps showing areas of low, moderate, high, and very high landslide hazard. Areas identified as having “very high and high landslide hazard” were located along the earthquake-source fault and along both banks of the Jian River. The role of rainfall is very significant for future landslide occurrence in the earthquake area. The results of this study will assist decision makers in the selection of safe sites during the reconstruction process. The maps can also be used for landslide risk management in the study area.

Large-scale Motion of Solar Filaments

2000 ◽  
Vol 179 ◽  
pp. 205-208
Author(s):  
Pavel Ambrož ◽  
Alfred Schroll
Keyword(s):  
Magnetic Flux ◽  
Proper Motion ◽  
Time Scale ◽  
Large Scale ◽  
Accuracy Of Measurements ◽  
Solar Filaments ◽  
General Movement ◽  
Scale Motion ◽  
Velocity Scatter

AbstractPrecise measurements of heliographic position of solar filaments were used for determination of the proper motion of solar filaments on the time-scale of days. The filaments have a tendency to make a shaking or waving of the external structure and to make a general movement of whole filament body, coinciding with the transport of the magnetic flux in the photosphere. The velocity scatter of individual measured points is about one order higher than the accuracy of measurements.

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