Geotechnical Earthquake Engineering and Soil Dynamics V
Geomorphological Controls on the Distribution of Liquefaction in Blenheim, New Zealand, during the 2016 Mw7.8 Kaikōura Earthquake
Publication: Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
ABSTRACT
The moment magnitude (Mw) 7.8 Kaikōura, New Zealand, earthquake triggered relatively few cases of liquefaction and related phenomena (e.g., lateral spreading) despite the large magnitude of the event. Cases of severe liquefaction manifestation were confined to localized areas proximal to waterways near the township of Blenheim, in the north-eastern corner of the South Island of New Zealand. The occurrence and non-occurrence of liquefaction within the wider Blenheim area is shown to closely correspond with fluvial geomorphology and associated depositional setting of the sediments. Herein, the distribution of liquefaction within the region is detailed in the context of the geomorphological influences and sedimentologic controls. This work highlights the influence of geomorphic variability on the occurrence of liquefaction, with the aim of improving the assessment of liquefaction hazards for future events worldwide.
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ACKNOWLEDGMENTS
The primary support for the New Zealand authors was provided by QuakeCoRE, a New Zealand Tertiary Education Commission-funded Centre and the Earthquake Commission (EQC). Support for the US authors was provided in part by the U.S. National Science Foundation (NSF) as part of the Geotechnical Extreme Event Reconnaissance (GEER) Association activity through CMMI-1300744 and grants CMMI-1435494 and CMMI-1724575. We thank the Marlborough District Council for providing information on the flood defense infrastructure in Marlborough. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of NSF, EQC, or the host institutions of the authors.
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Information & Authors
Information
Published In
Geotechnical Earthquake Engineering and Soil Dynamics V: Liquefaction Triggering, Consequences, and Mitigation (GSP 290)
Pages: 264 - 272
Editors: Scott J. Brandenberg, Ph.D., University of California, Los Angeles, and Majid T. Manzari, Ph.D., George Washington University
ISBN (Online): 978-0-7844-8145-5
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Jun 7, 2018
ASCE Technical Topics:
- Case studies
- Earthquake engineering
- Earthquake magnitude scale
- Earthquakes
- Engineering fundamentals
- Geohazards
- Geology
- Geomechanics
- Geomorphology
- Geotechnical engineering
- Hydraulic engineering
- Hydraulic structures
- Methodology (by type)
- Moment distribution
- Research methods (by type)
- River engineering
- Sediment
- Soil liquefaction
- Soil mechanics
- Soil properties
- Structural analysis
- Structural engineering
- Water and water resources
- Waterways
Authors
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