Journal article
Temporal slip-rate stability and variations on the Hope Fault, New Zealand, during the late Quaternary
N Khajavi, A Nicol, MC Quigley, RM Langridge
Tectonophysics | ELSEVIER SCIENCE BV | Published : 2018
Abstract
The Hope Fault transfers slip from Hikurangi subduction to the Alpine Fault in the northern South Island of New Zealand. It accommodates mainly dextral strike slip and currently carries the highest slip rate in the Marlborough Fault System. Displacements, displacement rates and earthquake recurrence intervals have been determined using a combination of high resolution LiDAR for 59 dextral displacements (~2.5–200 m) together with calibrated radiocarbon ages (~130 yr to 13,000 yr) for abandoned stream channels, terrace risers and alluvial fans. Mean single-event displacement (SED) of 3 ± 0.6 m (2.2 to 4.6 m for 21 measurements) and mean recurrence interval of ~266 ± 100 yr (range 128 to 560 yr..
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Awarded by University of Canterbury
Funding Acknowledgements
We wish to thank the NZ Natural Hazards Research Platform for funding LiDAR acquisition and the University of Canterbury (UC) the GNS Science (grant number 410UET21 Fault Geology), and the New Zealand Earthquake Commission (grant number E5713) for funding this research. The Department of Conservation and the owner of Poplars Station, Kevin Henderson, are thanked for permission to access the study area. We thank Amir Rezanejad for valuable field assistance. We wish to thank Liz Schermer and the anonymous reviewer for their very constructive comments which improved this work.