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  • Insights into the Liquefaction Hazard in Napier and Hastings Based on the Assessment of Data from the 1931 Hawke’s Bay, New Zealand, Earthquake
Title: Insights into the Liquefaction Hazard in Napier and Hastings Based on the Assessment of Data from the 1931 Hawke’s Bay, New Zealand, Earthquake
Hawke’s Bay is situated on the east coast of the North Island of New Zealand and has experienced several earthquakes in the past during which triggered liquefaction. The 1931 Hawke’s Bay earthquake is particularly interesting because it was one of the most damaging earthquakes and the deadliest earthquake in New Zealand’s history. This study provides insights into the actual versus predicted liquefaction hazard in Napier and Hastings. Towards this end, the simplified Cone Penetration Test (CPT)-based liquefaction triggering evaluation procedure proposed by Boulanger & Idriss (2014) (BI14) is used in conjunction with Liquefaction Severity Number (LSN) framework to predict severity of surficial liquefaction manifestations across the region for the 1931 MS7.8 Hawke’s Bay event. A comparison of the results with post-event observations suggests that the liquefaction hazard is being over-predicted. One possible cause for this over-prediction includes the shortcomings liquefaction damage potential frameworks to predict the severity of surficial liquefaction manifestations in silty soil deposits. This study demonstrates how historical earthquake accounts in a region can be used to assess the risk of the region from future earthquakes.  more » « less
Award ID(s):
1724575 1825189 1435494
PAR ID:
10094935
Author(s) / Creator(s):
Date Published:
Journal Name:
Proceedings - Australia-New Zealand Conference on Geomechanics
ISSN:
0155-9400
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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