TITLE

3D simulation of near-fault strong ground motion: comparison between surface rupture fault and buried fault

AUTHOR(S)
Liu Qifang; Yuan Yifan; Jin Xing
PUB. DATE
December 2007
SOURCE
Earthquake Engineering & Engineering Vibration;Dec2007, Vol. 6 Issue 4, p337
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this paper, near-fault strong ground motions caused by a surface rupture fault (SRF) and a buried fault (BF) are numerically simulated and compared by using a time-space-decoupled, explicit finite element method combined with a multi-transmitting formula (MTF) of an artificial boundary. Prior to the comparison, verification of the explicit element method and the MTF is conducted. The comparison results show that the final dislocation of the SRF is larger than the BF for the same stress drop on the fault plane. The maximum final dislocation occurs on the fault upper line for the SRF; however, for the BF, the maximum final dislocation is located on the fault central part. Meanwhile, the PGA, PGV and PGD of long period ground motions (≤1 Hz) generated by the SRF are much higher than those of the BF in the near-fault region. The peak value of the velocity pulse generated by the SRF is also higher than the BF. Furthermore, it is found that in a very narrow region along the fault trace, ground motions caused by the SRF are much higher than by the BF. These results may explain why SRFs almost always cause heavy damage in near-fault regions compared to buried faults.
ACCESSION #
28106274

 

Related Articles

  • Neotectonic studies and structural modeling of a part of the Nanga Parbat syntaxis using seismological, geological and remote sensing data. MonaLisa; Mazhar, Salman; Sayab, M. // Journal of Himalayan Earth Science;2012, Vol. 45 Issue 2, p93 

    This work comprises of neo-tectonic studies and structural modeling of a part of the Nanga Parbat Syntaxis (NPS) using remote sensing, geological and seismological data. Geological analyses include detailed literature review of active faults bounding the NPS and their kinematic history while...

  • Seismic of the territory Toktogul reservoir, Kyrgyzstan. Kamchybekov, Murataly; Yegemberdiyeva, Kuliya // AIP Conference Proceedings;7/8/2008, Vol. 1020 Issue 1, p1624 

    In connection with that this seismic in the territory of Naryn cascade maybe has its peculiarity in cludding in the territory Toktogul reservoir before of the building of the Toktogul dam, during of the building and after accordingly was decided to consider the seismic in this space of times....

  • An approach to jointly invert hypocenters and 1D velocity structure and its application to the Lushan earthquake series. Qian, Hui; Mechie, James; Li, Haibing; Xue, Guangqi; Su, Heping; Cui, Xiang // Journal of Seismology;Jan2016, Vol. 20 Issue 1, p213 

    Earthquake location is essential when defining fault systems and other geological structures. Many methods have been developed to locate hypocenters within a 1D velocity model. In this study, a new approach, named MatLoc, has been developed which can simultaneously invert for the locations and...

  • Helicoidal shell response to earthquake loads. Al-Ansari, Mohammed S. // Journal of Civil Engineering & Architecture;2009, Vol. 3 Issue 3, p16 

    This paper studies and analyzes the response of helical stairs as helicoidal shells in earthquake zones. The response of helical stairs under gravity loads was analyzed by both the membrane theory and finite element methods. The non-linear response of helical stairs, when subjected to UBC...

  • Intraplate stresses due to crustal heterogeneities along the Nagaur-Jhalawar transect, northwestern India. Manglik, A.; Arora, Tanvi; Thiagarajan, S.; Mallick, Ayan // Current Science (00113891);3/25/2009, Vol. 96 Issue 6, p838 

    The NW-SE trending Nagaur-Jhalawar deep crustal seismic profile transect across the Aravalli-Delhi Fold Belt to delineate the crustal structure and infer about the tectonics of this region. Seismic and gravity analyses of this profile revealed a complex tectonic structure in the central part of...

  • The Development On The Synthetic Seismic Waves And Its Relative Issues. Ping Liu; Hua Ma; Rong Wang; Zhenbao Li // Applied Mechanics & Materials;2014, Issue 630-642, p1888 

    The influential factors on synthetic seismic waves and seismic codes in China are described in detail in this paper. And the evolution of synthetic seismic waves is overviewed. The methods of synthetic ground motion in the earthquake engineering field are summarized in order to provide...

  • Effect of foundation flexibility on ductility reduction factors for R/C stack-like structures. Halabian, Amir M.; Kabiri, Shabnam // Earthquake Engineering & Engineering Vibration;Jun2011, Vol. 10 Issue 2, p277 

    The most important parameter used to determine force reduction factors in force-based design procedures adopted in the current seismic codes is the structural ductility. For a structure supported on a flexible foundation, the ductility factor could be affected by foundation compliances. The...

  • Study of seismicity around Toba area based on relocation hypocenter result from BMKG catalogue. Ramdhan, Mohamad; Nugraha, Andri Dian // AIP Conference Proceedings;Sep2013, Vol. 1554 Issue 1, p242 

    Toba area has complex tectonic setting attracting many earth scientists to study and understand tectonic and geological process or setting. The area is affected by oblique subduction zone, Renun Sumatran fault sub segment and some volcanoes that are near it. The earthquake catalogue provided by...

  • New data on the active faults and zones of modern lithosphere destruction in the Amur region. Sherman, S.; Sorokin, A.; Sorokina, A.; Gorbunova, E.; Bormotov, V. // Doklady Earth Sciences;Aug2011, Vol. 439 Issue 2, p1146 

    The article presents a study regarding the new methods of seismic monitoring and mapping on the active faults and zones in the Amur Region. It mentions that the accumulation of the earthquake sources reflect to the development of modern lithosphere destruction zones, in which it says that the...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics