Passive Seismic Surveys for Beach Thickness Evaluation at Different England (UK) Sites

Morgan, David; Gunn, David; Payo, Andres; Raines, Michael. 2022 Passive Seismic Surveys for Beach Thickness Evaluation at Different England (UK) Sites. Journal of Marine Science and Engineering, 10 (5), 667.

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In an era of environmental change leading to rising sea levels and increased storminess, there is a need to quantify the volume of beach sediment on the coast of Britain in order to assess the vulnerability to erosion using cheap, easy-to-deploy and non-invasive methods. Horizontal-to-vertical spectral ratio (HVSR) is a technique that uses the natural background seismic ‘noise’ in order to determine the depth of underlying geological interfaces that have contrasting physical properties. In this study, the HVSR technique was deployed at a number of settings on the coast of England that represented a range of different compositions, geomorphology, and underlying bedrock. We verified the results by comparison to other survey techniques, such as ground-penetrating RADAR, multichannel analysis of surface waves (MASW), and cone penetration tests. At locations where there was sufficient contrast in physical properties of the beach material compared to the underlying bedrock, the beach thickness (and therefore the volume of erodible material) was successfully determined, showing that HVSR is a useful tool to use in these settings

Item Type: Publication - Article
Digital Object Identifier (DOI):
ISSN: 2077-1312
Date made live: 10 Jun 2022 10:50 +0 (UTC)

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