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Title: Large‐scale crustal structure beneath Singapore using receiver functions from a dense urban nodal array
Authors: Lythgoe, Karen H.
Ong, Miranda Su Qing
Wei, Shengji
Keywords: Engineering::Environmental engineering
Issue Date: 2020
Source: Lythgoe, K. H., Ong, M. S. Q., & Wei, S. (2020). Large‐scale crustal structure beneath Singapore using receiver functions from a dense urban nodal array. Geophysical Research Letters, 47(7), e2020GL087233-. doi:10.1029/2020gl087233
Journal: Geophysical Research Letters 
Abstract: Geophysics has a role to play in the development of “smart cities”. This is particularly true for Singapore, one of the world's most densely populated countries. Imaging of Singapore's subsurface is required to identify geological faults, model shaking from future earthquakes, and provide a framework for underground development. A noninvasive geophysical technique that is well suited for urban areas is passive seismic surveys using compact seismic instruments called nodes. Here we image Singapore's crustal structure using receiver functions generated by a 40‐day deployment of a 88 station nodal array. We generate high resolution receiver functions, despite the noisy environment and short recording time and also create common‐conversion point images. Our results reveal a complex crustal structure, containing multiple discontinuities. Azimuthal variations indicate a distinct change in crustal structure on either side of the postulated Bukit Timah fault, which has implications for seismic hazard.
ISSN: 0094-8276
DOI: 10.1029/2020gl087233
DOI (Related Dataset):
Rights: © 2020 The Author(s). This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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