Determination of NEHRP Site Class of Seismic Recording Stations in the Northwest Himalayas and Its Adjoining Area Using HVSR Method

Harinarayan, N. H.; Kumar, Abhishek

doi:10.1007/s00024-017-1696-6

Cited by 14 publications

(7 citation statements)

References 39 publications

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“…The present study is classified in class-C using both modified NEHRP and JRA schemes. Ghanshali site is classified in class-A after examining the lithology of the site , Harinarayan and Kumar (2018b) classified this site in class-C using NEHRP scheme, Pandey (2018) classified this site in class-C using NEHRP scheme, and predominant period of this site estimated after applying Generalized inversion (GINV) method also falls in class-C of JRA scheme (Sharma et al, 2014). In the present study, this site is classified in class-B using modified NEHRP and JRA schemes.…”

Section: Discussionmentioning

confidence: 84%

“…At these locations, accelerometers of the EEW System have also been installed. Further, Harinarayan and Kumar (2018b) used the records of the earthquakes from the Indian NSMIN stations dataset viz., Program for Excellence in Strong Motion Studies (PESMOS) to classify these sites by applying the H/V spectral ratio curve technique. These earthquakes were triggered from Dec. 2005 to Dec. 2009, and their magnitudes range from 3.5 to 6.4.…”

Section: Discussionmentioning

confidence: 99%

“…These earthquakes were triggered from Dec. 2005 to Dec. 2009, and their magnitudes range from 3.5 to 6.4. As Mittal et al (2012) used the site lithology and Harinarayan and Kumar (2018b) used the strong ground motion data of the triggered earthquake at these stations for classification purposes; therefore, Pandey (2018) carried out field tests for classification. These field tests are MASW using Soil Spy Rosina and records of microtremors from Tromino.…”

Section: Discussionmentioning

confidence: 99%

“…Then, the sites were classified based on estimated V s30 using the NEHRP scheme. Dhanaulti site was classified in site class-B by Mittal et al (2012) after examining the lithology of the site (Borcherdt, 1994), Harinarayan and Kumar (2018b) used strong ground motion records and classified this site in class-C using a modified NEHRP scheme, Pandey (2018) classified this site based on V s30 in class-C using NEHRP scheme. The present study is classified in class-C using both modified NEHRP and JRA schemes.…”

Section: Discussionmentioning

confidence: 99%

“…In the present study, this site is classified in class-B using modified NEHRP and JRA schemes. Pauri site is classified in class-A by Mittal et al (2012) considering lithology of the site and in class-B by Harinarayan and Kumar (2018b), Sharma et al (2014), and Pandey (2018) using NEHRP scheme. In the present study, it is classified in site class-B.…”

Section: Discussionmentioning

confidence: 99%

See 4 more Smart Citations

Site classification of seismic recording stations of Garhwal region of earthquake early warning system for Uttarakhand, India

Kumar

Pandey

Kamal

et al. 2022

Vietnam J. Earth Sci.

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Site classification is vital to carry out seismic hazard analysis of a region and get the damage patterns caused by earthquakes. In the present study, the ground motion of earthquakes recorded from 2015 to 2019 at 84 sites of the seismic network array of Earthquake Early Warning System for Uttarakhand are analyzed for site classification purposes. The predominant period from the mean horizontal to vertical spectral ratio curves was estimated. The classification schemes devised by Japan Road Association and National Earthquake Hazards Reduction Program are applied to classify the sites. Along with this, two other site classification indexes schemes are also applied for classification purposes. Data winnowing techniques are used over the ground motion records to pick out desirable quality records. Conclusively, the site class with the highest recurrence rate amongst the used methods is selected as the final class for that particular site. The effect of magnitude, distance and depth on horizontal to vertical spectral ratio are described and concluded that these factors do not significantly affect the ratio curves. The average horizontal to vertical spectral ratio curves obtained for all the sites matches well with the existing literature. The classification of a few sites are verified from the classification done by other methods in recent studies. It is evident from the results that the classification done in this study matches well with them.

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Section: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%