scholarly journals Site Effect Estimation Using Microtremor Measurements at New Luxor City Proposed Site, South Egypt*

2021 ◽  
Vol 09 (09) ◽  
pp. 131-149
Author(s):  
Abdelnasser Mohamed ◽  
Sayed Omer El khateeb ◽  
Wael Dosoky ◽  
Mahmoud A. Abbas
Keyword(s):  
Site Effect ◽  
Effect Estimation ◽  
Microtremor Measurements

Comparison of different local site effect estimation methods in site with high thickness of alluvial layer deposits: a case study of Babol city

2020 ◽  
Vol 13 (7) ◽  
Author(s):  
Asskar Janalizadeh Choobbasti ◽  
Saman Soleimani Kutanaei ◽  
Hamed Taleshi Ahangari ◽  
Meisam Mahmudi Kardarkolai ◽  
Hossein Motaghedi
Keyword(s):  
Site Effect ◽  
Estimation Methods ◽  
Local Site Effect ◽  
Local Site ◽  
Effect Estimation

scholarly journals Application of the microtremor measurements to a site effect study

2017 ◽  
Vol 30 (3) ◽  
pp. 157-164 ◽  
Author(s):  
Sadegh Rezaei ◽  
Asskar Janalizadeh Choobbasti
Keyword(s):  
Site Effect ◽  
Effect Study ◽  
A Site ◽  
Microtremor Measurements

Seismic Zonations at Micro and Macro-Level for Regions in the Peninsular India

2016 ◽  
Vol 7 (2) ◽  
pp. 35-63 ◽  
Author(s):  
Naveen James ◽  
T.G Sitharam
Keyword(s):  
Site Effect ◽  
Grid Size ◽  
Macro Level ◽  
Earthquake Hazards ◽  
Seismic Zonation ◽  
Peninsular India ◽  
Karnataka State ◽  
Micro Level ◽  
Effect Estimation ◽  
Moderate Magnitude

Due to the lack of proper preparedness in the country against natural disasters, even an earthquake of moderate magnitude can cause extensive damage. This necessitates seismic zonation. Seismic zonation is a process in which a large region is demarcated into small zones based on the levels of earthquake hazards. Seismic zonation is generally carried out at micro-level, meso-level and macro-level. Presently, there are only a few guidelines available regarding the use of a particular level of zonation for a given study area. The present study checks the suitability of various levels of seismic zonation for different regions and reviews the feasibility of various methodologies for site characterization and site effect estimation. Further the seismic zonation was carried out both at the micro (for the Kalpakkam) and macro-level (for Karnataka state) using the appropriate methodologies. Based on this, recommendations have been made regarding the suitability of various methodologies as well as the grid size to be adopted for different level of zonation based on actual studies.

Site Effect Estimation of Shanxi Areas with the Records of Strong Earthquake in Wenchuan

2012 ◽  
Vol 170-173 ◽  
pp. 2147-2151
Author(s):  
Qi Cheng Li
Keyword(s):  
Strong Earthquake ◽  
Natural Frequencies ◽  
Site Effect ◽  
Geological Structure ◽  
Shanxi Province ◽  
Predominant Frequency ◽  
Reference Sites ◽  
2008 Wenchuan Earthquake ◽  
Close Relationship ◽  
Effect Estimation

Abstract: By means of two reference sites, site effects in 29 stations of Shanxi Province are analyzed by using 2008 Wenchuan earthquake data according to adopting traditional ratios method. Because site predominant frequencies getting from all kinds of computations have higher reliability, suggestion is made that in order to reduce loss producing from construction resonance in earthquake, natural frequencies of future constructions in above sites should keep away from site predominant frequency as possible. Computational results show Shanxi areas arises strong site effect in earthquake, this has close relationship with geological structure, formation lithology and strong new structural movement, etc.

scholarly journals Estimation of Vs Structure of Krueng Aceh and its Suburb Basin of Aceh Province, Indonesia, Derived from Microtremor Measurements

Geosciences ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 186 ◽  
Author(s):  
Asrillah Asrillah ◽  
Marwan Marwan ◽  
Umar Muksin ◽  
Rusydy Ibnu ◽  
Sasaki Takao ◽  
...  
Keyword(s):  
Site Effect ◽  
Structure Characteristics ◽  
Maximum Penetration Depth ◽  
Average Maximum ◽  
Aceh Province ◽  
Uppermost Layer ◽  
Surface Damages ◽  
Maximum Penetration ◽  
Downstream Area ◽  
Microtremor Measurements

The Aceh and Seulimeum Faults flank the Krueng Aceh Basin in Indonesia, and the shear-wave velocity (Vs) structure of the basin is not extensively available. Understanding the Vs structure is very important in order to figure out how the basin structures seemingly appear, and this can eventually be used to generate a microzonation map for other forthcoming studies. To provide this, Vs was measured over an area approximately covering Banda Aceh City and its surroundings, by setting two lines consisting of eight points projected in the NW–SE and SW–NE orientations. This research aims to facilitate the approximation of the Vs structure characteristics of the Krueng Aceh Basin using the microtremor array method (MAM). Triangular configurations were set by deploying four seismometers following an M-station geometry for three different array sizes (i.e., 3, 10, and 30 m in distance). The data were then processed by utilizing the spatial autocorrelation (SPAC) technique. The result shows that the Vs structure generally dips down from SE to NW, and it gradually declines from SW to NE. The combination of these Vs structures tends to be oblique toward the SW–NE direction. This form may be affected by the Aceh Segment Fault which is more active than the Seulimeum Segment Fault. The average maximum penetration depth and Vs are 603 m and 947.5 m/s in the SE–NW orientation, and 650 m and 958 m/s in the SW–NE direction. Generally, the thickness of the strata is greater in the upstream area compared to the downstream area. Their composition consists of alluvium (A) at the uppermost layer and diluvium (D) at the underlying layers. Then, all of the identified strata are aged from the Pleistocene to Tertiary Pleistocene (Tp). These characteristics of the strata could potentially cause surface damages as a result of site effect responses when an earthquake is occurring.

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