DSpace Repository

Bedrock depth evaluation using microtremor measurement: empirical guidelines at weathered granite formation in Singapore

Show simple item record

dc.contributor.author Moon, Sung-Woo
dc.contributor.author Subramaniam, Palanidoss
dc.contributor.author Zhang, Y.
dc.contributor.author Vinoth, Ganapathiraman
dc.contributor.author Ku, Taeseo
dc.date.accessioned 2020-05-13T06:17:11Z
dc.date.available 2020-05-13T06:17:11Z
dc.date.issued 2019-10-15
dc.identifier.citation Moon, S. W., Subramaniam, P., Zhang, Y., Vinoth, G., & Ku, T. (2019). Bedrock depth evaluation using microtremor measurement: empirical guidelines at weathered granite formation in Singapore. Journal of Applied Geophysics, 171, 103866. en_US
dc.identifier.uri https://doi.org/10.1016/j.jappgeo.2019.103866
dc.identifier.uri http://nur.nu.edu.kz/handle/123456789/4689
dc.description.abstract Detection of bedrock depth is one of the critical site investigation procedures for seismic hazard analysis and underground developments that may encounter varying rock formation. The most common practice to detect bedrock is to directly drill boreholes. However, the intrusive borehole-based site investigation process is often expensive and time consuming and provide limited information from discrete boreholes. In the present study, a surface wave based technique, microtremor array measurement (MAM) and microtremor measurement (MM) is used to find the depth of bedrock at Bukit Timah granite formation in Singapore. Based on a series of MAM and/or MM surveys, four interpretation approaches, i.e., (1) Bilinear intersection method; (2) Preselected shear wave velocity (VS) based approach; (3) Normalized phase velocity approach; and (4) Horizontal to vertical spectral ratio (HVSR) analysis, are proposed for bedrock depth detection. The first three approaches are based on surface wave inverted VS profile using a vertical component of MAM. The fourth approach is to utilize the natural frequency of the ground through HVSR using three components microtremor measurements (MM). By compiling experimental data at nine different testing sites, it was demonstrated that non-invasive surface wave-based approaches can be effectively used for bedrock detection. Especially, a promising empirical correlation between the natural frequency of ground and the depth of bedrock is subsequently proposed. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.rights Attribution-NonCommercial-ShareAlike 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/3.0/us/ *
dc.title Bedrock depth evaluation using microtremor measurement: empirical guidelines at weathered granite formation in Singapore en_US
dc.type Article en_US
workflow.import.source science


Files in this item

The following license files are associated with this item:

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-ShareAlike 3.0 United States Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 3.0 United States

Video Guide

Submission guideSubmission guide

Submit your materials for publication to

NU Repository Drive

Browse

My Account

Statistics