dc.contributor.author	Barnard, Scott Trevor
dc.date.accessioned	2010-04-07T04:11:07Z
dc.date.available	2010-04-07T04:11:07Z
dc.date.issued	2010	en
dc.description.abstract	Risks posed by geohazards to urban centres are constantly increasing, due to the continuous increase in population and associated infrastructure. A major risk to North Island urban centres is impacts from volcanic ashfall. This study analyses the vulnerabilities of selected New Zealand lifelines infrastructure to volcanic ash, to better understand and mitigate these risks. Telecommunications and wastewater networks are assessed, as is the vulnerability of Auckland Airport and grounded aircraft. The ability of vehicles to drive on ash covered roads is also tested, to determine the extent to which emergency services, utility providers and the public will be able to travel during and immediately after ashfall. Finally, air-conditioners have been identified as a significant vulnerability during ashfall, due to the high dependence on cooling for infrastructure and lifelines providers. These are examined to quantify the effects of ashfall on their performance. Each of the selected infrastructure types is assessed through a review of past impacts of ashfall, and experimentation either in the field or under laboratory conditions. Where appropriate, mitigation options that reduce identified vulnerabilities are considered. In most cases these options are operational rather than physical engineering solutions, and indicate pre-planning and response requirements. Key recommended mitigation options include the acquirement or strategic relocation of resources prior to ashfall, regular cleaning and maintenance of essential air conditioners during ashfall to enable their continued use, access to appropriate vehicles for utility providers to reach infrastructure, and discharge of untreated wastewater into Waitemata harbour at Orakei during ashfall on Auckland, to preserve the ability to continue treating wastewater at the Mangere treatment plant	en
dc.identifier.uri	http://hdl.handle.net/10092/3688
dc.identifier.uri	http://dx.doi.org/10.26021/8108
dc.language.iso	en
dc.publisher	University of Canterbury. Geological Sciences	en
dc.relation.isreferencedby	NZCU	en
dc.rights	Copyright Scott Trevor Barnard	en
dc.rights.uri	https://canterbury.libguides.com/rights/theses	en
dc.subject	volcanic ash	en
dc.subject	tephra	en
dc.subject	risk	en
dc.subject	hazard	en
dc.subject	lifelines	en
dc.subject	volcanism	en
dc.subject	vulnerability	en
dc.subject	infrastructure	en
dc.title	The vulnerability of New Zealand lifelines infrastructure to ashfall.	en
dc.type	Theses / Dissertations
thesis.degree.discipline	Geology	en
thesis.degree.grantor	University of Canterbury	en
thesis.degree.level	Doctoral	en
thesis.degree.name	Doctor of Philosophy	en
uc.bibnumber	1322737	en
uc.college	Faculty of Science	en

The vulnerability of New Zealand lifelines infrastructure to ashfall.

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