2001 Bhuj, India, Earthquake Engineering Seismoscope Recordings and Eastern North America Ground-Motion Attenuation Relations

Cramer, Chris H.; Kumar, Ashok

doi:10.1785/0120020194

Cited by 53 publications

(39 citation statements)

References 8 publications

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“…The open circles on Figure 2 show the distribution of the peak acceleration data in magnitude and distance. For the 2001 M w 7.7 Bhuj earthquake the sources of strong-motion data have been given in previous publications (CRAMER and KUMAR, 2003;IYENGAR and RAGHUKANTH, 2004). Our recording sites can be classified into two categories, rock and soil.…”

Section: Figurementioning

confidence: 99%

“…We adopted the functional form of the JOYNER-BOORE (1981) for the ground-motion prediction, which was also used by SABETTA and PLUGLIESE (1987) for the Italian strong-motion records. As our strong motion network was installed in August 2002, we used the same PGA SRR data for the 2001 Bhuj main shock as used in the previous work (IYENGAR and RAGHUKANTH, 2004;CRAMER and KUMAR, 2003).…”

Section: Introductionmentioning

confidence: 99%

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Ground-motion Attenuation Relation from Strong-motion Records of the 2001 Mw 7.7 Bhuj Earthquake Sequence (2001–2006), Gujarat, India

Mandal

Kumar

Satyamurthy

et al. 2009

Pure appl. geophys.

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Predictive relations are developed for peak ground acceleration (PGA) from the engineering seismoscope (SRR) records of the 2001 M w 7.7 Bhuj earthquake and 239 strong-motion records of 32 significant aftershocks of 3.1 B M w B 5.6 at epicentral distances of 1 B R B 288 km. We have taken advantage of the recent increase in strong-motion data at close distances to derive new attenuation relation for peak horizontal acceleration in the Kachchh seismic zone, Gujarat. This new analysis uses the Joyner-Boore's method for a magnitude-independent shape, based on geometrical spreading and anelastic attenuation, for the attenuation curve. The resulting attenuation equation is, lnðYÞ ¼ À7:9527 þ 1:4043 M W À ln r 2 jb þ 19:82 2 1=2 À0:0682 S for 3:1 \ M W 7:7 std: dev: r ð Þ : AE0:8243; where, Y is peak horizontal acceleration in g, M w is moment magnitude, r jb is the closest distance to the surface projection of the fault rupture in kilometers, and S is a variable taking the values of 0 and 1 according to the local site geology. S is 0 for a rock site, and, S is 1 for a soil site. The relation differs from previous work in the improved reliability of input parameters and large numbers of strong-motion PGA data recorded at short distances (0-50 km) from the source. The relation is in demonstrable agreement with the recorded strongground motion data from earthquakes of M w 3.5, 4.1, 4.5, 5.6, and 7.7. There are insufficient data from the Kachchh region to adequately judge the relation for the magnitude range 5.7 B M w B 7.7. But, our groundmotion prediction model shows a reasonable correlation with the PGA data of the 29 March, 1999 Chamoli main shock (M w 6.5), validating our ground-motion attenuation model for an M w 6.5 event. However, our groundmotion prediction shows no correlation with the PGA data of the 10 December, 1967 Koyna main shock (M w 6.3). Our ground-motion predictions show more scatter in estimated residual for the distance range (0-30 km), which could be due to the amplification/noise at near stations situated in the Kachchh sedimentary basin. We also noticed smaller residuals for the distance range (30-300 km), which could be due to less amplification/noise at sites distant from the Kachchh basin. However, the observed less residuals for the longer distance range (100-300 km) are less reliable due to the lack of available PGA values in the same distance range.Pure and Applied Geophysics studied intraplate region in the world. However, no strong-motion records from large earthquakes (M w > 7) are available for ENA. Thus, the ground-motion attenuation relations for ENA have been estimated based on stochastic modeling using constraints from the strong-motion records of smaller earthquakes (M B

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Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ground-motion Attenuation Relation from Strong-motion Records of the 2001 Mw 7.7 Bhuj Earthquake Sequence (2001–2006), Gujarat, India

Mandal

Kumar

Satyamurthy

et al. 2009

Pure appl. geophys.

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“…The discrepancy in the observed recordings at this distance may be due to use of the geological map of very large scale i.e. 1:2,000,000; that create a lot of uncertainty Cramer and Kumar [5].…”

Section: Prediction For Rock Sitesmentioning

confidence: 91%

“…There exist thirteen such instruments recording within the radius of 300 km from the epicenter; the instruments were stationed at the ground floor of one or two story buildings. Data is taken from the Cramer and Kumar, [5] as shown in Table 1; and similar soil conditions are assumed at the recording stations, which are based on the NEHRP recommendations. Showing the SRR values at three time periods having damping ratio of 5%.…”

Section: Available Datamentioning

confidence: 99%

“…Various different methodologies for prediction of peak ground accelerations have been employed by the researchers Singh et al [3], Hough et al [4], Cramer and Kumar [5] and Iyengar and Raghu Kanth [6] to develop future design basis for engineering structures. This paper presents the application of Component Attenuation Modeling (CAM) technique to predict design responses of systems with varying natural time periods.…”

Section: Introductionmentioning

confidence: 99%

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Prediction of response spectral parameters for Bhuj earthquake (26^th January 2001) using a component attenuation modelling technique

Lodi¹,

Kumar²

2006

WIT Transactions on the Built Environment, Vol 87

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The M w 7.7, Bhuj earthquake that occurred in the north-western fringes of the Indian subcontinent is regarded as one of the most devastating earthquakes of the stable continental regions (SCR). Although the Kutch region has experienced the events of large and moderate magnitude since historic times, yet the estimation of future design basis have remained hampered by lack of ground motion data. A recently developed methodology of Component Attenuation Modelling (CAM) is adopted to estimate the response spectral values. The technique is a modified version of the orthodox stochastically based simulation model, and predicts design structural responses directly by adapting local seismological information, for the regions lacking earthquake records. A dataset of 13 Structural Response Recorders (SRRs) stationed at various location from the epicentre is utilized for purpose of validation, due to absence of Digital Strong-Motion Accelerograph (DSA) records. The stations are categorized in three schemes: Quaternary, Tertiary and Rock; based on NEHRP classification. The wave propagation behaviour of the crust is assumed to resemble with Coastal Region of South China (CRSC), considering the geological setting and wave transmission qualities of both regions. The observed recordings reconcile well with predictions of CAM in the bandwidth of available time periods on the rock sites. The absence of recordings in displacement and acceleration controlled regimes restricts to assess the performance of the technique in all period ranges. The exercise not only helps achieve the design parameters for the subject region, but also assesses the applicability of CAM to the regions of low to moderate seismicity.

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Seismic Hazard Assessment of Gujrat International Finance Tec-City

Sharma

Kolathayar

2019

Latest Advancements in Underground Structures and Geological Engineering

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2001 Bhuj, India, Earthquake Engineering Seismoscope Recordings and Eastern North America Ground-Motion Attenuation Relations

Cited by 53 publications

References 8 publications

Ground-motion Attenuation Relation from Strong-motion Records of the 2001 Mw 7.7 Bhuj Earthquake Sequence (2001–2006), Gujarat, India

Ground-motion Attenuation Relation from Strong-motion Records of the 2001 Mw 7.7 Bhuj Earthquake Sequence (2001–2006), Gujarat, India

Prediction of response spectral parameters for Bhuj earthquake (26^th January 2001) using a component attenuation modelling technique

Seismic Hazard Assessment of Gujrat International Finance Tec-City

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2001 Bhuj, India, Earthquake Engineering Seismoscope Recordings and Eastern North America Ground-Motion Attenuation Relations

Cited by 53 publications

References 8 publications

Ground-motion Attenuation Relation from Strong-motion Records of the 2001 Mw 7.7 Bhuj Earthquake Sequence (2001–2006), Gujarat, India

Ground-motion Attenuation Relation from Strong-motion Records of the 2001 Mw 7.7 Bhuj Earthquake Sequence (2001–2006), Gujarat, India

Prediction of response spectral parameters for Bhuj earthquake (26th January 2001) using a component attenuation modelling technique

Seismic Hazard Assessment of Gujrat International Finance Tec-City

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Prediction of response spectral parameters for Bhuj earthquake (26^th January 2001) using a component attenuation modelling technique