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, Ravi Sankar Narayan, Jay Prakash 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: | 9.78E+12 |
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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