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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/18824
Title: Influence of source characteristics on the uncertainties in masw survey
Authors: Desai A.S.
Roy N.
Jakka R.S.
Narayan J.P.
Kranthikumar A.
Silvestri F.
Moraci N.
Published in: Proceedings of Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- 7th International Conference on Earthquake Geotechnical Engineering, 2019
Abstract: Multichannel Analysis of Surface Waves (MASW) method is extremely popular to carry out seismic site characterization. However, certain uncertainties are existent in this technique. One of the crucial factors which contribute to these uncertainties is the source parameters such as source type, energy and position. This study examined how the change in these parameters influences the uncertainties in the MASW method using numerical simulations. The parameters considered in the numerical simulations are the amplitude of impulse load, duration of impulse load and source offset. For the study, the results of full wave-field simulation were compared with those of plane Rayleigh wave simulation. Results indicate that the change in the amplitude of the impulse load doesn’t affect the underestimation of the Rayleigh wave phase velocity. Longer the pulse duration, better the dispersion curve observed at lower frequencies. An increment in the source offset reduces the underestimation. © 2019 Associazione Geotecnica Italiana, Rome, Italy.
Citation: Proceedings of Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions- 7th International Conference on Earthquake Geotechnical Engineering, 2019, (2019), 2068- 2075
URI: http://repository.iitr.ac.in/handle/123456789/18824
Issue Date: 2019
Publisher: CRC Press/Balkema
Keywords: Earthquakes
Numerical methods
Numerical models
Rayleigh waves
Dispersion curves
Lower frequencies
Multi-channel analysis of surface waves
Pulse durations
Rayleigh-wave phase velocity
Seismic sites
Source characteristics
Source parame
ISBN: 9780367143282
Author Scopus IDs: 57215562867
55643408100
26532830500
56240931000
57192979529
Author Affiliations: Desai, A.S., Department of Earthquake Engineering, Indian Institute of Technology Roorkee, India
Roy, N., Department of Civil Engineering, Jadavpur University, Kolkata, India
Jakka, R.S., Department of Earthquake Engineering, Indian Institute of Techn
Funding Details: The authors wish to thank Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India for providing financial support for carrying out the current research (Project Grant Code No. SER-909-EQD).
Appears in Collections:Conference Publications [EQ]

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