نتایج جستجو برای: earthquake characteristics

تعداد نتایج: 688615  

2017
Thomas H W Goebel Jacob I Walter Kyle Murray Emily E Brodsky

The state of Oklahoma has experienced an unprecedented increase in earthquake activity since 2009, likely driven by large-scale wastewater injection operations. Statewide injection rates peaked in early 2015 and steadily decreased thereafter, approximately coinciding with collapsing oil prices and regulatory action. If seismic activity is primarily driven by fluid injection, a noticeable seismo...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
C G Sammis D Sornette

We review the "critical point" concept for large earthquakes and enlarge it in the framework of so-called "finite-time singularities." The singular behavior associated with accelerated seismic release is shown to result from a positive feedback of the seismic activity on its release rate. The most important mechanisms for such positive feedback are presented. We solve analytically a simple mode...

2011
Robert Anthony

Robert Anthony Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology Abstract Since the early 1960s when Maruyama and Burridge and Knopoff convincingly demonstrated that the elastodynamic radiation patterns exhibited by shear faulting in an isotropic, elastic medium were consistent with a pair of force couples, it has become standard practice amongst seism...

2015
Noriaki Endo Hayato Komori

In a previous study, we have calculated the usable road distance in the southern coastal area of Iwate Prefecture following the 2011 Tohoku Earthquake. In this context, a usable road is one on which at least one vehicle has been probed during the observation period. If the accumulative usable distance up to September 30, 2011 is considered as 100%, then the percentage of the usable road distanc...

Journal: :Remote Sensing 2016
Tengteng Qu Ping Lu Chun Liu Hangbin Wu Xiaohang Shao Hong Wan Nan Li Rongxing Li

Early detection and early warning are of great importance in giant landslide monitoring because of the unexpectedness and concealed nature of large-scale landslides. In China, the western mountainous areas are prone to landslides and feature many giant complex landslides, especially following the Wenchuan Earthquake in 2008. This work concentrates on a new technique, known as the “hybrid-SAR te...

Journal: :Computers & Geosciences 2007
Tao Pei A-Xing Zhu Chenghu Zhou Baolin Li Chengzhi Qin

Clustered events are usually deemed as feature when several spatial point processes are overlaid in a region. They can be perceived either as a precursor that may induce a major event to come or as offspring triggered by a major event. Hence, the detection of clustered events from point processes may help to predict a forthcoming major event or to study the process caused by a major event. Neve...

2014
Li Zhang Minggang Zhao Wenhao Fu Xinqiang Gao Ji Shen Zuyun Zhang Ming Xian Yunzhi Jiao Jian Jiang Jinqian Wang Guomin Gao Bin Tang Liang Chen Weimin Li Changhua Zhou Shaoping Deng Jianwen Gu Dong Zhang Ying Zheng Xiangmei Chen

BACKGROUND A 7.0-magnitude earthquake hit Lushan County in China's Sichuan province on April 20, 2013, resulting in 196 deaths and 11,470 injured. This study was designed to analyze the characteristics of the injuries and the treatment of the seismic victims. METHODS After the earthquake, an epidemiological survey of injured patients was conducted by the Health Department of Sichuan Province....

2004
Qinghua Huang

1Computational Geodynamics Laboratory, Department of Geophysics, Peking University, Beijing100871, China *Corresponding author address: Prof. Qinghua Huang, Computational Geodynamics Laboratory, Department of Geophysics, Peking University, Beijing, China; E-mail: [email protected] A statistical method, which is called the Region-Time-Length (RTL) algorithm and takes into account information suc...

Journal: :BMC public health 2016
Jiuping Xu Jiuzhou Dai Renqiao Rao Huaidong Xie

BACKGROUND In this study, exposure refers to survivors who suffered from life-changing situations, such as personal injuries, the deaths or injury of family members, relatives or friends or the loss of or damage to personal or family property, as a result of the earthquake. The mediating effect of risk perception on the exposure and psychological health in survivors from the Longmen Shan Fault ...

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