Abstract
Active multichannel analysis of surface waves (MASW) requires sensor placement along a straight line with equal spacing to predict the properties of sub-surface earth. However, due to the presence of different obstacles in the field, placing sensors along a straight line is not always possible. To this end, the primary objective of this study is to propose a non-straight line receiver array-based active MASW method. The proposed method follows a diverted path near the obstacle while keeping the rest of the geophones in a conventional straight line before and after the shift. Sensors are shifted on an arc of a circle, with the source acting as the center of this circle. Therefore, the distance between the source and shifted sensors remains the same as their original position. This simple maneuver enables us to use existing wavefield transformation techniques without any modification. Multiple field experiments are performed using different non-straight line arrays. Dispersion images obtained from the proposed method resembled the outcomes of a conventional active MASW survey.
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References
Kumar J, Naskar T (2015) Effects of site stiffness and source to receiver distance on surface wave tests results. Soil Dyn Earthq Eng 77:71–82
Park CB, Miller RD, Xia J (1998) Imaging dispersion curves of surface waves on multichannel record. In: SEG technical program expanded abstracts. Society of Exploration Geophysicists, pp 1377–1380
Naskar T, Kumar J (2019) A faster scheme to generate multimodal dispersion plots for Rayleigh wave propagation. Soil Dyn Earthq Eng 117:280–287
Strobbia C (2003) Surface wave methods. Acquisition, processing and inversion. PhD thesis, Politecnico di Torino, p 317
Kumar J, Naskar T (2017) Resolving phase wrapping by using sliding transform for generation of dispersion curves. Geophysics 82(3):V127–V136
Kumar J, Naskar T (2017) A fast and accurate method to compute dispersion spectra for layered media using a modified Kausel-Roësset stiffness matrix approach. Soil Dyn Earthq Eng 92:176–182
Naskar T, Kumar J (2022) MATLAB codes for generating dispersion images for ground exploration using different multichannel analysis of surface wave transforms. Geophysics 87(3):F15–F24
McMechan GA, Yedlin MJ (1981) Analysis of dispersive waves by wave field transformation. Geophysics 46(6):869–874
Yilmaz O (1987) Seismic data processing. Society of Exploration Geophysicists, p 252
Luo Y, Xia J, Miller RD, Xu Y, Liu J, Liu Q (2008) Rayleigh-wave dispersive energy imaging using a high-resolution linear Radon transform. Pure Appl Geophys 165(5):903–922
Mukherjee S, Bhaumik M, Naskar T (2022, August) S-transform based processing of noisy surface wave record for recovering high-resolution spectrum. In: Second international meeting for applied geoscience and energy. Society of Exploration Geophysicists and American Association of Petroleum Geologists, pp 2631–2635
Naskar T, Kumar J (2017) Predominant modes for Rayleigh wave propagation using the dynamic stiffness matrix approach. J Geophys Eng 14(5):1032–1041
Foti S, Hollender F, Garofalo F, Albarello D, Asten M, Bard PY, Socco V (2018) Guidelines for the good practice of surface wave analysis: a product of the InterPACIFIC project. Bull Earthq Eng 16(6):2367–2420
Park C, Fromm A, Flood P (2019) MASW survey with unevenly spaced receiver array (USRA). In: SAGEEP, vol 2019(1). European Association of Geoscientists & Engineers, pp 1–5
Zhang S, Li M (2011) Influence of uneven trace spacing on Rayleigh wave dispersion. J Earth Sci 22(2):231–240
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Das, P., Naskar, T., Adari, S.V. (2024). Active Multichannel Analysis of Surface Waves with Non-straight Line Geophone Array. In: Jose, B.T., Sahoo, D.K., Shin, E.C., Choudhury, D., Joseph, A., Pai, R.R. (eds) Proceedings of the Indian Geotechnical Conference 2022 Volume 1. IGC 2022. Lecture Notes in Civil Engineering, vol 476. Springer, Singapore. https://doi.org/10.1007/978-981-97-1737-8_31
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DOI: https://doi.org/10.1007/978-981-97-1737-8_31
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