The first peak ground motion attenuation relationships for North of Vietnam

Nguyen, Le-Minh; Lin, Tsair-Fuh; Wu, Yih‐Min; Huang, B.; Chang, Chien Hsin; Huang, Wenzhun; Le, Tu Son; Nguyen, Quoc Cuong; Dinh, Van Toan

doi:10.1016/j.jseaes.2011.09.012

Cited by 12 publications

(11 citation statements)

References 16 publications

(31 reference statements)

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“…A study of peak ground motion attenuation (Nguyen et al 2012) for northern Vietnam based on shallow local earthquakes provided ground acceleration and peak ground velocity maps for the shallow surface. The general shape of the boundaries between the high and low velocities they present provides structural and geological details that are also in good agreement with our observations at shorter periods.…”

Section: Fault Systemsmentioning

confidence: 99%

Anisotropic Rayleigh-wave phase velocities beneath northern Vietnam

Legendre

Zhao

Huang

et al. 2015

Earth, Planets and Space

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We explore the Rayleigh-wave phase-velocity structure beneath northern Vietnam over a broad period range of 5 to 250 s. We use the two-stations technique to derive the dispersion curves from the waveforms of 798 teleseismic events recoded by a set of 23 broadband seismic stations deployed in northern Vietnam. These dispersion curves are then inverted for both isotropic and azimuthally anisotropic Rayleigh-wave phase-velocity maps in the frequency range of 10 to 50 s. Main findings include a crustal expression of the Red River Shear Zone and the Song Ma Fault. Northern Vietnam displays a northeast/southwest dichotomy in the lithosphere with fast velocities beneath the South China Block and slow velocities beneath the Simao Block and between the Red River Fault and the Song Da Fault. The anisotropy in the region is relatively simple, with a high amplitude and fast directions parallel to the Red River Shear Zone in the western part. In the eastern part, the amplitudes are generally smaller and the fast axis displays more variations with periods.

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Section: Fault Systemsmentioning

confidence: 99%

Anisotropic Rayleigh-wave phase velocities beneath northern Vietnam

Legendre

Zhao

Huang

et al. 2015

Earth, Planets and Space

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“…Although the predicted PGAs show a sharp drop to 1.2 ms -2 at the centre of KL, these values are still alarmingly high. This is certainly expected as the Nguyen et al (2012) GMPE used for the DSHA is applicable up to a suggested local magnitude ML of 4.6. Therefore, until a better understanding of the critical magnitude that these LI faults can produce is 20 achieved coupled with a more suitable GMPE, this value may be too conservative to be implemented for seismic resistant design in KL.…”

Section: Hazard Mapsmentioning

confidence: 65%

“…Therefore, more accurate GMPEs developed for this region by Loi et al (2018) and Shoushtari et al (2016) together with the GMPE developed for Japan by Si and Midorikawa (2000) are used here to carry out the DSHA and PSHA. As for the LI earthquakes, we only carried out DSHA using the Nguyen et al (2012) GMPE that fits best the scarce data of low magnitude events (Loi et al, 2018). The relationship of these GMPEs to recorded ground motion data due to the SSZ, SFZ, and LI earthquakes are plotted at various magnitude 5 intervals in Fig.…”

Section: Ground Motion Prediction Equations (Gmpes)mentioning

confidence: 99%

“…6a), weightages of 0.6 and 0.4 were assigned to each GMPE, respectively. On the other hand, weightages were equally split for the GMPEs applicable to the SFZ as both SFZL18 and SM00 (denoted for Si and Midorikawa, 2000) showed close estimation in relation to recorded ground motion data while GMPE suggested by N12 (denoted for Nguyen et al, 2012) was utilized as the only GMPE for LI earthquakes. An in-house Microsoft Excel based program was designed to perform the 25 DSHA with hazard outcome being the maximum possible PGA estimated as a function of distance and magnitude taking into consideration each of the 50 MPEs.…”

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confidence: 99%

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Revisiting Seismic Hazard Assessment For Peninsular Malaysia Using Deterministic And Probabilistic Approaches

Loi¹,

Raghunandan²,

Swamy³

2018

Preprint

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Abstract. Seismic hazard assessments -both deterministic and probabilistic, for Peninsular Malaysia have been carried out using peak ground acceleration (PGA) data recorded between 2004 and 2016 by the Malaysian Meteorological Departmentusing triaxial accelerometers placed at 19 seismic stations within the peninsula and monitored. Seismicity source modelling for the deterministic seismic hazard assessment (DSHA) used historical point sources whereas in the probabilistic (PSHA) approach, line and areal sources were used. The earthquake sources comprised the Sumatran Subduction Zone (SSZ), Sumatran 10 Fault Zone (SFZ), and local intraplate (LI) faults. Gutenberg-Richter law b-value for the various zones identified within the SSZ ranged between 0.56 and 1.06 (mean = 0.83) and that for the zones within SFZ, between 0.53 and 1.13 (mean = 0.84).Suitable ground motion prediction equations (GMPEs) for Peninsular Malaysia along with other pertinent information were used for constructing a logic tree for PSHA of the region. The DSHA "critical-worst" scenario suggests PGAs of 0.07-0.80 ms -2 , whilst the PSHA suggests mean PGAs of 0.06-0.42 ms -2 and 0.12-0.70 ms -2 at 10% and 2% probability of exceedance in 15 50 years, respectively. Both DSHA and PSHA, despite using different source models and methodologies, conclude that the central-western cities of Peninsular Malaysia located between 2°N and 4°N are most susceptible to high PGAs due to neighbouring active Sumatran sources SFZ and SSZ. Surprisingly, the relatively less active SFZ source with low magnitude seismicity appeared as the major contributor, due to its close proximity. Potential hazard due to SSZ mega-earthquakes should not be dismissed, however. Finally, DSHA performed using the limited intraplate seismic data from the Bukit Tinggi (LI) fault 20 at a reasonable Mw 5.0 predicted a PGA of ~0.40 ms -2 at Kuala Lumpur.

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“…In Vietnam, due to the lack of strong ground motion data, for a long time no local attenuation equations have been developed. Although since 2011, two attenuation equations have been published by Vietnamese scientists, none of them are used untill now as the reliability of these equations has been in the process of verification (N. L. Minh et al, 2012;T. V. Hung and Kiyomiya, 2012).…”

Section: Attenuation Equationmentioning

confidence: 99%

Probabilistic seismic hazard assessment for the South Central Vietnam

Phuong¹

2015

TCCKHVTD

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In this paper, the probabilistic seismic hazard maps for the South Central Vietnam are presented. An earthquakes catalog updated until 2014 and most recent seismotectonic and geodynamic information were used for delineation of 14seismic source zones in the study area. The Toro et al. (1997) attenuation equation was used for the PSHA. The hazard maps show distribution of the mean peak ground acceleration (PGA) with a 10%, 5%, 2% and 0.5% probability of exceedance in 50 years.

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The first peak ground motion attenuation relationships for North of Vietnam

Cited by 12 publications

References 16 publications

Anisotropic Rayleigh-wave phase velocities beneath northern Vietnam

Anisotropic Rayleigh-wave phase velocities beneath northern Vietnam

Revisiting Seismic Hazard Assessment For Peninsular Malaysia Using Deterministic And Probabilistic Approaches

Probabilistic seismic hazard assessment for the South Central Vietnam

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