Microtremor coherency
Item
Title (Dublin Core)
en-US
Microtremor coherency
Description (Dublin Core)
en-US
By recording microtremors simultaneously using arrays having two apertures, the effect of incoherent noise, which can act to depress coherency values, may be reduced, leading to better estimates of azimuthally-averaged coherency, and hence to improved shear-wave velocity profiles at sites. The method is exemplified by the use of 30 m and 40 m triangular arrays at McEwan Park, Lower Hutt, New Zealand, where the method is shown to result in better fits to theoretical coherency. Adequate correction is confined to low frequencies (less than 4.5 Hz in this case). Estimates of Vs are modified for greater depths (50 to 200m in this example) but unaltered for near-surface materials.
Creator (Dublin Core)
Stephenson, W. R.
Publisher (Dublin Core)
en-US
New Zealand Society for Earthquake Engineering
Date (Dublin Core)
2010-03-31
Type (Dublin Core)
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
en-US
Article
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
https://bulletin.nzsee.org.nz/index.php/bnzsee/article/view/285
10.5459/bnzsee.43.1.1-6
Source (Dublin Core)
en-US
Bulletin of the New Zealand Society for Earthquake Engineering; Vol 43 No 1 (2010); 1-6
2324-1543
1174-9857
Language (Dublin Core)
eng
Relation (Dublin Core)
https://bulletin.nzsee.org.nz/index.php/bnzsee/article/view/285/271
Rights (Dublin Core)
en-US
Copyright (c) 2010 W. R. Stephenson
en-US
https://creativecommons.org/licenses/by/4.0
