Shear-wave velocities in Parkway basin, Wainuiomata, from refraction microtremor surface wave dispersion

SKU:
SR_2006_004
$30.00
(Inc. GST)
$26.09
(Ex. GST)
Write a Review

Kaiser, A.E.; Louie, J.N. 2006 Shear-wave velocities in Parkway basin, Wainuiomata, from refraction microtremor surface wave dispersion. Lower Hutt: GNS Science. GNS Science report 2006/24 16 p. + 1 CDROM

Abstract: This report investigates the shear-wave velocity variation throughout the Parkway basin, Wainuiomata, New Zealand. Shear-wave velocity measurements using the refraction microtremor (ReMi) technique were made at 19 sites within the Parkway basin. Microtremor predominantly consisting of Rayleigh waves was recorded by 3-Hz geophones along 140-m-long arrays to target the shear-wave velocity in the top 100 m. For each site we present measurements of the effective average shear-wave velocity in the top 30, 50 and 100 m, the assumed depth of basin fill, and the vertical two-way travel time to basement rock. Measurements of the shear-wave velocity and depth of the surface layer, as well as the halfspace are also presented. Results show the averahe shear-wave velocity to 30 m depth is well-defined with a clear decrease in velocity towards the centre and south of the basin. A similar trend is observed in the inferred vertical two-way travel times to basement rock, where values increase towards the centre and south of the basement, also reflecting greater basement depths. (auth)

Shipping Cost:
Calculated at Checkout
Weight:
150.00 Grams