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

A site effect study of the Adapazari basin, Turkey, from strong- and weak-motion data

2004 ◽  
Vol 8 (4) ◽  
pp. 559-572 ◽  
Author(s):  
Ozel Oguz ◽  
Tsutomu Sasatani
Keyword(s):  
Site Effect ◽  
Effect Study ◽  
Motion Data ◽  
A Site

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

scholarly journals A-Site Effect on the Conversion of Bio-Ethanol into Isobutene over Ternary A<sub>1</sub>Zn<sub>y</sub>Zr<sub>z</sub>O<sub>n</sub> Catalysts

2016 ◽  
Vol 05 (03) ◽  
pp. 95-101
Author(s):  
Feng Liu ◽  
Yong Men ◽  
Jinguo Wang ◽  
Xiaoxiong Huang ◽  
Biao Zhao ◽  
...  
Keyword(s):  
Site Effect ◽  
A Site

Site Effect Study in Urban Area: Experimental Results in Grenoble (France)

2002 ◽  
pp. 2543-2557 ◽  
Author(s):  
Benoît Lebrun ◽  
D. Hatzfeld ◽  
P. Y. Bard
Keyword(s):  
Urban Area ◽  
Site Effect ◽  
Effect Study ◽  
Experimental Results

Revealing the A‐Site Effect of Lead‐Free A 3 Sb 2 Br 9 Perovskite in Photocatalytic C(sp 3 )−H Bond Activation

2020 ◽  
Vol 59 (41) ◽  
pp. 18136-18139 ◽  
Author(s):  
Zhenzhen Zhang ◽  
Yuying Yang ◽  
Yingying Wang ◽  
Lanlan Yang ◽  
Qi Li ◽  
...  
Keyword(s):  
Bond Activation ◽  
Site Effect ◽  
Lead Free ◽  
A Site

scholarly journals Establishing a reference rock site for the site effect study in and around the Kathmandu valley, Nepal

2016 ◽  
Vol 68 (1) ◽  
Author(s):  
Mukunda Bhattarai ◽  
Lok Bijaya Adhikari ◽  
Umesh Prasad Gautam ◽  
Laurent Bollinger ◽  
Bruno Hernandez ◽  
...  
Keyword(s):  
Site Effect ◽  
Effect Study ◽  
Kathmandu Valley ◽  
Rock Site

A workflow to discern 1D and 2D ground resonances with single-station microtremor measurements

2021 ◽  
Author(s):  
Giulia Sgattoni ◽  
Silvia Castellaro
Keyword(s):  
Site Response ◽  
Vertical Component ◽  
Sediment Layer ◽  
Resonance Frequencies ◽  
Single Station ◽  
Spectral Components ◽  
Bedrock Depth ◽  
A Site ◽  
Microtremor Measurements ◽  
Three Components

&lt;p&gt;Measuring ground resonances is of great importance for seismic site amplification studies. The task is usually addressed with the common H/V (horizontal to vertical spectral ratio) approach, which is widely used for both microzonation studies and stratigraphic imaging. Peaks on the H/V function are used to identify ground resonance frequencies, usually assuming 1D site conditions, i.e. with plane-parallel stratigraphy. In the simple case of a horizontal soft layer overlying a bedrock, 1D resonance is linked to the local bedrock depth (as a function of the shear wave velocity of the sediment layer). Therefore, when the 1D approximation holds, spatial variations of the resonance frequency reflect changes of bedrock depth (when lateral homogeneity of the sediment cover can be assumed). However, at sites with non-plane subsurface geometries, more complex resonance patterns may develop, such as 2D resonance patterns that typically occur within sediment-filled valleys. In this case, 2D resonance involves simultaneous vibration of the whole sedimentary infill at the same frequency, which may lead to large seismic amplification. 2D ground resonances can no longer be linked to the local depth-to-bedrock directly below the measurement site, but depend on the whole valley geometry and mechanic properties. Distinguishing between the 1D and 2D nature of a site is mandatory to avoid wrong stratigraphic and dynamic interpretations, which is in turn extremely relevant for seismic site response assessment.&lt;/p&gt;&lt;p&gt;We investigated the problem in the Bolzano sedimentary basin (Northern Italy), which lies at the intersection between three valleys, using a single-station microtremor approach, the same usually applied for H/V surveys. We observed that the footprints of 1D and 2D resonances reside in different behaviors along the three components of motion. This is because, while the dynamic behavior of a 1D-site is the same along all horizontal directions, 2D resonances differ along the longitudinal and transversal directions of the resonating body, e.g. parallel and perpendicular to the valley axis. In addition, 2D resonance modes involve also a vertical component. This implies that the H/V method, by mixing the information along the three components, is not suitable to detect 2D resonances, that can be acknowledged only by looking at the individual spectral components and not at the H/V curves alone.&lt;/p&gt;&lt;p&gt;By analyzing several hundred single-station microtremor measurements, we identified a list of frequency and amplitude features that characterize 1D and 2D resonances on individual spectral components of motion and on H/V ratios, on a single measurement and on several measurements acquired along profiles across the investigated valleys. We identified valleys characterized by 1D-only, 1D+2D and 2D-only resonance patterns and we propose a workflow scheme to conduct experimental measurements and data analysis in order to directly assess the 1D or 2D resonance nature of a site with a single-station approach, rather than evaluating this indirectly with numerical modelling.&lt;/p&gt;

A-Site Effect on the Oxidation Process of Sn-Halide Perovskite: First-Principles Calculations

2021 ◽  
pp. 9691-9696
Author(s):  
Eun Ho Kim ◽  
June Ho Lee ◽  
Seong Hun Kim ◽  
Jun Hyeong Gu ◽  
Donghwa Lee
Keyword(s):  
First Principles ◽  
Oxidation Process ◽  
Site Effect ◽  
First Principles Calculations ◽  
Halide Perovskite ◽  
A Site

Site Effects of the 2003 Bam, Iran, Earthquake

2005 ◽  
Vol 21 (1_suppl) ◽  
pp. 125-136 ◽  
Author(s):  
Mohammad Kazem Jafari ◽  
Mohammad Reza Ghayamghamian ◽  
Mohammad Davoodi ◽  
Mohsen Kamalian ◽  
Abdollah Sohrabi-Bidar
Keyword(s):  
High Frequency ◽  
Site Effects ◽  
Site Effect ◽  
Site Amplification ◽  
Frequency Characteristics ◽  
Ground Conditions ◽  
A Site ◽  
The City

The site amplification characteristics of the 2003 Bam, Iran, earthquake were investigated based on geological studies as well as geophysical, microtremor and aftershock measurements conducted by IIEES in the study area. A site effect microzonation map was prepared classifying the ground conditions of the city into five distinct categories, based on their stiffness, thickness, and frequency characteristics. The highest percentage of damage was concentrated in sites with stiff shallow and medium depth soils, which possessed considerable amplification potentials in high frequency ranges.

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