Probabilistic Seismic Hazard Macrozonation of Tamil Nadu in Southern India

Menon, Arun; Ornthammarath, Teraphan; Corigliano, Mirko; Lai, Carlo G.

doi:10.1785/0120090071

Cited by 83 publications

(44 citation statements)

References 38 publications

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“…Apart from the authors (Crespo and Martí, 2002;Crespo et al, 2003Crespo et al, , 2007, Secanell et al (2008) also employed it for studying the Pyrenean region, Menon et al (2010) for South India, and Goda et al (2013) for the UK. A question may be posed as to the reliability of this description of the activity rate and its relative merits in comparison with traditional zoned procedures (Stein et al, 2011).…”

Section: Methodsmentioning

confidence: 99%

Seismic hazard of the Iberian Peninsula: evaluation with kernel functions

Crespo

Martínez

Martí

2014

Nat. Hazards Earth Syst. Sci.

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Abstract. The seismic hazard of the Iberian Peninsula is analysed using a nonparametric methodology based on statistical kernel functions; the activity rate is derived from the catalogue data, both its spatial dependence (without a seismogenic zonation) and its magnitude dependence (without using Gutenberg-Richter's relationship). The catalogue is that of the Instituto Geográfico Nacional, supplemented with other catalogues around the periphery; the quantification of events has been homogenised and spatially or temporally interrelated events have been suppressed to assume a Poisson process.The activity rate is determined by the kernel function, the bandwidth and the effective periods. The resulting rate is compared with that produced using Gutenberg-Richter statistics and a zoned approach. Three attenuation relationships have been employed, one for deep sources and two for shallower events, depending on whether their magnitude was above or below 5. The results are presented as seismic hazard maps for different spectral frequencies and for return periods of 475 and 2475 yr, which allows constructing uniform hazard spectra.

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Section: Methodsmentioning

confidence: 99%

Seismic hazard of the Iberian Peninsula: evaluation with kernel functions

Crespo

Martínez

Martí

2014

Nat. Hazards Earth Syst. Sci.

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“…Seismotectonic province models have been proposed for a number of regions (NOW-ROOZI 1976;TAVAKOLI and GHAFORY-ASHTIANY 1999;MELETTI et al 2000;SINGH et al 2011). These regionalized provinces are used for seismic hazard analysis (e.g., FRANKEL 1995;MENON et al, 2010). However, a routine procedure for constructing seismotectonic province models has not been established.…”

Section: Introductionmentioning

confidence: 99%

Seismotectonic Properties and Zonation of the Far-Eastern Eurasian Plate Around the Korean Peninsula

Hong

Park

Houng

2015

Pure Appl. Geophys.

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Regional seismotectonics provides crucial information for seismic hazard analysis, which is difficult to address with short-term earthquake records. The far-eastern Eurasian plate around the Korean Peninsula presents a stable intraplate environment with diffuse seismicity, of which responsible tectonics and active faults are difficult to identify. Combined analysis of instrumental and historical earthquake records is required for assessment of long-term seismicity properties. Seismotectonic provinces are identified from the spatial distribution of seismicity properties controlled by the medium properties and stress field. The boundaries of the seismotectonic provinces are defined considering the medium properties that can be inferred from geological, geophysical and tectonic features. The Gutenberg-Richter frequency-magnitude relationships and maximum magnitudes for the seismotectonic provinces are determined using instrumental and historical earthquake records. The validity of maximum magnitude estimation is tested with synthetic data. A parametric method, the Tate-Pisarenko method, produces more accurate estimates than non-parametric methods. A modified Tate-Pisarenko method is proposed for estimation of maximum magnitudes for incomplete short-term earthquake catalogs. The maximum magnitude of events for the whole region is approximately the same as the average of the maximum magnitudes of events for subdivided provinces, causing apparent variation in maximum magnitudes depending on the number of seismotectonic provinces. Consideration of a reasonable number of seismotectonic provinces may be needed for proper assessment of seismic hazard potentials is recommended. The combined analysis of historical and instrumental earthquake records suggests maximum magnitudes greater than 7 around the peninsula.

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“…Deterministic approach is also considered for maximum credible earthquake. Hence considering the MCE is likened to ground motion with 2475 yr return period, while the DBE is likened to the 475 yr return period (MENON et al, 2010), the deterministic results are compared with 2% probability of exceedance in 50 years (2,475 R.P.) results.…”

Section: Resultsmentioning

confidence: 99%

“…Fitting a straight line, such as that implied by the G-R law, through recurrence data, in which the mean rate of exceedance of small earthquakes is underestimated, will tend to flatten the line. As a result, the actual mean rate of small earthquakes will be underestimated and the mean rate of large earthquakes will be overestimated (MENON et al 2010). Two different methods, namely, the visual cumulative (CUVI) method (TINTI and MULARGIA, 1985) and the method by STEPP (1973) were used to calculate the completeness periods for different magnitude classes as shown in Fig.…”

Section: Regional Recurrencementioning

confidence: 99%

Use of Seismotectonic Information for the Seismic Hazard Analysis for Surat City, Gujarat, India: Deterministic and Probabilistic Approach

Thaker,

Rathod,

Rao

et al. 2011

Pure Appl. Geophys.

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Surat, the financial capital of Gujarat, India, is a mega city with a population exceeding five millions. The city falls under Zone III of the Seismic Zoning Map of India. After the devastating 2001 Bhuj earthquake of Mw 7.7, much attention is paid towards the seismic microzonation activity in the state of Gujarat. In this work, an attempt has been made to evaluate the seismic hazard for Surat City (21.170 N, 72.830 E) based on the probabilistic and deterministic seismic hazard analysis. After collecting a catalogue of historical earthquakes in a 350 km radius around the city and after analyzing a database statistically, deterministic analysis has been carried out considering known tectonic sources; a further recurrence relationship for the control region is found out. Probabilistic seismic hazard analyses were then carried out for the Surat region considering five seismotectonic sources selected from a deterministic approach. The final results of the present investigations are presented in the form of peak ground acceleration and response spectra at bed rock level considering the local site conditions. Rock level Peak Ground Acceleration (PGA) and spectral acceleration values at 0.01 s and 1.0 s corresponding to 10% and 2% probability of exceedance in 50 years have been calculated. Further Uniform Hazard Response Spectrum (UHRS) at rock level for 5% damping, and 10% and 2% probability of exceedance in 50 years, were also developed for the city considering all site classes. These results can be directly used by engineers as basic inputs in earthquake-resistant design of structures in and around the city.

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Probabilistic Seismic Hazard Macrozonation of Tamil Nadu in Southern India

Cited by 83 publications

References 38 publications

Seismic hazard of the Iberian Peninsula: evaluation with kernel functions

Seismic hazard of the Iberian Peninsula: evaluation with kernel functions

Seismotectonic Properties and Zonation of the Far-Eastern Eurasian Plate Around the Korean Peninsula

Use of Seismotectonic Information for the Seismic Hazard Analysis for Surat City, Gujarat, India: Deterministic and Probabilistic Approach

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