Regional Arias Intensity Attenuation Relationship for Taiwan Considering VS30

Lee, Chyi-Tyi; Hsieh, Bow Shan; Sung, Chih-Hsuan; Lin, Ping

doi:10.1785/0120100268

Cited by 25 publications

(20 citation statements)

References 41 publications

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“…According to the NEHRP site classification, all of the sites on the hanging wall belong to site category C (V S30 in the range of 360-760 m=s), whereas the sites on the footwall belong to categories C and D (V S30 in the range of 180-360 m=s). According to Lee et al (2012), Arias intensity for site class D locations will be higher than those for site class C locations. Therefore, site effects are not likely to be the reason for the discrepancy between the residuals of the hanging wall and footwall.…”

Section: Effects Of the Hanging Wall And Footwallmentioning

confidence: 99%

“…Given the clear benefits of using Arias intensity to capture the potential destructiveness of earthquakes, and especially the seismic landslide hazard, various authors have studied the Arias intensity attenuation relationship for different regions around the world (Sabetta and Pugliese, 1996;Kayen and Mitchell, 1997;Travasarou et al, 2003;Bragato and Slejko, 2005;Danciu and Tselentis, 2007;Stafford et al, 2009;Lee et al, 2012). Previous studies on strong ground motion have shown that in the near-fault region of thrust fault earthquakes, the vertical component of strong ground motion can be stronger than the horizontal component (Bozorgnia and Campbell, 2004;Xie et al, 2010;Gülerce and Abrahamson, 2011), whereas the fault-parallel component is usually weaker than the fault-normal component (Somerville et al, 1997;Somerville, 1998;Kalkan and Kwong, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Spatial Variability and Attenuation of Arias Intensity during the 1999 Chi‐ChiM_w 7.6 Earthquake, Taiwan

Liu¹,

Gao²,

Xie³

2015

Bulletin of the Seismological Society of America

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Arias intensity is a measure of earthquake intensity that captures the potential destructiveness of an earthquake. Using the strong ground motion records of the M w 7.6 Chi-Chi earthquake, Taiwan, we analyze the spatial distribution of the vertical, horizontal, fault-parallel, and fault-normal components of the Arias intensity. We investigate the effects of the hanging wall and footwall on ground motions, and develop a relationship between Arias intensity and peak ground acceleration (PGA), incorporating the influence of local site conditions. We also evaluate the applicability of some widely used Arias intensity attenuation relationships by comparing the observed values with empirical estimates. Our results show the vertical Arias intensity is generally lower than the horizontal component, with nearly 90% of the vertical-tohorizontal ratios between 0.1 and 0.6. During this typical reverse mechanism earthquake, the fault-normal component of the Arias intensity is approximately 20% higher than the fault-parallel component for sites within 40 km of the fault. Arias intensities on the hanging wall are systematically higher than those on the footwall, indicating clear hanging-wall effects. Site conditions influence the correlation between Arias intensity and PGA. Arias intensity shows a good correlation with PGA and V S30 . Arias intensity increases with increasing PGA and decreasing V S30 . The Arias intensities observed within 40 km of site class C locations, and within 80 km of site class D locations, are generally lower than the mean estimates from empirical predictions. In contrast, at distances of > 80 km from site class D locations, the observed Arias intensities are much larger than the empirical predictions as a result of site amplification. Considering the variability of ground motion between earthquakes, the attenuation model of Travasarou et al. (2003), model 4 of Stafford et al. (2009), and the model of Lee et al. (2012) provide a good fit with observations from the Chi-Chi earthquake.

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Section: Effects Of the Hanging Wall And Footwallmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spatial Variability and Attenuation of Arias Intensity during the 1999 Chi‐ChiM_w 7.6 Earthquake, Taiwan

Liu¹,

Gao²,

Xie³

2015

Bulletin of the Seismological Society of America

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“…This can be obtained through a regular probabilistic seismic hazard analysis (PSHA) (Wong et al, 2004) that uses a fault-source model in addition to the regional source model (Cheng et al, 2007) and a proper set of Arias intensity attenuation equations (Lee et al, 2012).…”

Section: Temporal Probability Of Landslidesmentioning

confidence: 99%

“…First, we used our seismic hazard model of Taiwan (Cheng et al, 2007) and a new Arias-intensity attenuation relationship (Lee et al, 2012) to perform a PSHA and compile a 475-year Arias-intensity map for Taiwan (Fig. 7a).…”

Section: Mapping Of Seismic Landslide Hazards For the Whole Of Taiwanmentioning

confidence: 99%

Statistical seismic landslide hazard analysis: An example from Taiwan

Lee

2014

Engineering Geology

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“…Wald et al (1990), Harp and Wilson (1995), Mahdavifar et al (2007), Rajabi et al (2010), Lee et al (2012) among others. While some of these laws estimate the value of Ia based on two predictors cited in Eq.…”

Section: Introductionmentioning

confidence: 99%

2D dynamic studies combined with the surface curvature analysis to predict Arias Intensity amplification

Torgoev

Havenith

2016

J Seismol

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A 2D elasto-dynamic modelling of the pure topographic seismic response is performed for six models with a total length of around 23.0 km. These models are reconstructed from the real topographic settings of the landslide-prone slopes situated in the Mailuu-Suu River Valley, Southern Kyrgyzstan. The main studied parameter is the Arias Intensity (Ia, m/sec), which is applied in the GIS-based Newmark method to regionally map the seismically-induced landslide susceptibility. This method maps the Ia values via empirical attenuation laws and our studies investigate a potential to include topographic input into them. Numerical studies analyse several signals with varying shape and changing central frequency values. All tests demonstrate that the spectral amplification patterns directly affect the amplification of the Ia values. These results let to link the 2D distribution of the topographically amplified Ia values with the parameter called as smoothed curvature. The amplification values for the low-frequency signals are better correlated with the curvature smoothed over larger spatial extent, while those values for the high-frequency signals are more linked to the curvature with smaller smoothing extent. The best predictions are provided by the curvature smoothed over the extent calculated according to Geli's law. The sample equations predicting the Ia amplification based on the smoothed curvature are presented for the sinusoid-shape input signals. These laws cannot be directly implemented in the regional Newmark method, as 3D amplification of the Ia values addresses more problem complexities which are not studied here. Nevertheless, our 2D results prepare the theoretical framework which can potentially be applied to the 3D domain and, therefore, represent a robust basis for these future research targets.

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Regional Arias Intensity Attenuation Relationship for Taiwan Considering VS30

Cited by 25 publications

References 41 publications

Spatial Variability and Attenuation of Arias Intensity during the 1999 Chi‐ChiM_w 7.6 Earthquake, Taiwan

Spatial Variability and Attenuation of Arias Intensity during the 1999 Chi‐ChiM_w 7.6 Earthquake, Taiwan

Statistical seismic landslide hazard analysis: An example from Taiwan

2D dynamic studies combined with the surface curvature analysis to predict Arias Intensity amplification

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Regional Arias Intensity Attenuation Relationship for Taiwan Considering VS30

Cited by 25 publications

References 41 publications

Spatial Variability and Attenuation of Arias Intensity during the 1999 Chi‐ChiMw 7.6 Earthquake, Taiwan

Spatial Variability and Attenuation of Arias Intensity during the 1999 Chi‐ChiMw 7.6 Earthquake, Taiwan

Statistical seismic landslide hazard analysis: An example from Taiwan

2D dynamic studies combined with the surface curvature analysis to predict Arias Intensity amplification

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Product

Resources

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Spatial Variability and Attenuation of Arias Intensity during the 1999 Chi‐ChiM_w 7.6 Earthquake, Taiwan

Spatial Variability and Attenuation of Arias Intensity during the 1999 Chi‐ChiM_w 7.6 Earthquake, Taiwan