Late Holocene Liquefaction at Sites of Contemporary Liquefaction during the 2010-2011 Canterbury Earthquake Sequence, New Zealand
Sarah H Bastin, Kari Bassett, Mark C Quigley, Brett Maurer, Russell A Green, Brendon Bradley, David Jacobson
Bulletin of the Seismological Society of America | SEISMOLOGICAL SOC AMER | Published : 2016
The 2010–2011 Canterbury earthquake sequence (CES) caused up to 10 episodes of liquefaction at highly susceptible sites in eastern Canterbury, resulting in severe damage to land and infrastructure. Subsurface investigations at five sites over two study areas revealed CES dikes and sills that align with and crosscut pre-CES liquefaction features, including dikes, a lateral sill, a sandblister, and a buried compound sandblow. Crosscutting relationships combined with carbon-14 ( C) dating constrain the timing of the pre-CES liquefaction features to likely post-A.D. 1321 and pre-1960 in one study area. Pre-CES features in the second study area likely formed in three distinct episodes: post-A.D. ..View full abstract
Awarded by U.S. National Science Foundation (NSF)
Awarded by U.S. Geological Survey (USGS)
We thank Martitia Tuttle, Peter Almond, and Catherine Reid for their discussions that aided the interpretation of the pre-CES liquefaction features. We also thank Sjoerd van Ballegooy for his enthusiastic critiques of our research and his assistance with processing and interpreting the cone penetration test (CPT) data. This work was funded by an EQC Capability Fund and the University of Canterbury Mason Trust Fund. R. Green and B. Maurer's efforts on this study were supported by the U.S. National Science Foundation (NSF) Grants CMMI-1407428 and CMMI-1435494 and U.S. Geological Survey (USGS) Grants G12AP20002 and G14AP00046. However, any opinions, findings, and conclusions or recommendations expressed in this article are those of the authors and do not necessarily reflect the views of EQC Capability Fund, the University of Canterbury Mason Trust Fund, NSF, or USGS.