Ground-Motion Attenuation Relationship for East Central Iran

2012 ◽  
Vol 102 (6) ◽  
pp. 2677-2684 ◽  
Author(s):  
H. Hamzehloo ◽  
M. Mahood
Keyword(s):  
Ground Motion ◽  
Central Iran ◽  
Attenuation Relationship ◽  
East Central ◽  
Ground Motion Attenuation

scholarly journals Multisource Ground Motion Attenuation Relationship Model for the Vertical Component of the Wenchuan Earthquake on May 12, 2008

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Ping Liu ◽  
Tongjie Ren ◽  
Hai Wang ◽  
Chunfeng Li ◽  
Baoqiang Wang ◽  
...  
Keyword(s):  
Wenchuan Earthquake ◽  
Ground Motion ◽  
Response Spectrum ◽  
Site Effect ◽  
Source Model ◽  
Attenuation Relationship ◽  
Ground Motion Attenuation ◽  
Vertical Ground Motion ◽  
The Wenchuan Earthquake ◽  
Vertical Ground

In order to extend the multisource model to vertical ground motion, we fit the vertical ground motion attenuation relationship of the Wenchuan earthquake. Different from traditional attenuation relationship forms, we propose a simplified ground motion attenuation function including site effect via a flag related to VS30. The regression results show that it has site effect on the vertical ground motion of the Wenchuan earthquake and gradually weakens with the increase in periods. According to residuals analysis, the hanging-wall effect on vertical ground motion is strong for the Wenchuan earthquake, especially in short periods. The result analysis indicates that the shape of the vertical response spectrum based on regression is different from that of the horizontal component and complies with the recommended design vertical response spectrum of FEMA P-1050. V/H (vertical-to-horizontal ratios), as a main way to estimate vertical ground motion, cannot be simply fixed as 2/3. Therefore, site location, site condition, and frequency spectrum have to be considered comprehensively. The regression accuracy of the vertical ground motion of the multisource model is slightly higher than that of the point-source model and lower than that of the finite fault source model. It is expected that this model will serve as an alternative for source-to-site distance when multiple asperities are to be modeled in the absence of the detail fault model to get a general scenario of the future ground motions.

Facies analysis of a large-scale Jurassic shelf-lagoon: the Kamar-e-Mehdi Formation of east-central Iran

Facies ◽  
2009 ◽  
Vol 56 (1) ◽  
pp. 59-87 ◽  
Author(s):  
Markus Wilmsen ◽  
Franz T. Fürsich ◽  
Kazem Seyed-Emami ◽  
Mahmoud R. Majidifard ◽  
Massoud Zamani-Pedram
Keyword(s):  
Large Scale ◽  
Facies Analysis ◽  
Central Iran ◽  
East Central
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