000020093 001__ 20093
000020093 005__ 20170118182354.0
000020093 04107 $$aeng
000020093 046__ $$k2017-01-09
000020093 100__ $$aDavis, Craig
000020093 24500 $$aQuantification and Evaluation of the Liquefaction-Induced Flooding From the Christchurch Earthquake Sequence

000020093 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020093 260__ $$b
000020093 506__ $$arestricted
000020093 520__ $$2eng$$aLarge areas in Christchurch, New Zealand and surrounding region were inundated multiple times as a result of earthquakeinduced liquefaction initiated by the main events of the 2010-2011 Canterbury earthquake sequence. This study documents information collected for numerous flooded areas, including estimated flood depths where possible. The ejected water volume due to liquefaction is estimated for six cases from the post-earthquake topographic data. The volume change due to the liquefaction settlement is calculated from the ground surface pre- and post-earthquake digital elevation model based on LiDAR data. The estimated liquefaction induced settlement agrees very well with observed inundation depths, confirming expectations based on liquefaction being a constant volume process. In addition to liquefaction ejecta, there are other potential sources of the observed flood waters, including damage to potable, sanitary sewer, and storm drainage infrastructure allowing the water to leak onto the ground surface. In some locations these damaged infrastructures clearly contributed to the inundation, but evidence indicates these alternate sources provided relatively small volumes of the total documented flood waters. As a result, this study confirms the observed flooding resulted mainly from liquefaction ejecta. This finding is important because for the first time it documents the previously relatively unrecognized liquefaction-induced flooding hazard which needs to be considered in urban and land development planning.

000020093 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020093 653__ $$aLiquefaction; Flooding; Canterbury Earthquake Sequence; Liquefaction-Induced Flooding; Case Studies

000020093 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020093 720__ $$aDavis, Craig$$iHu, Jianping
000020093 8560_ $$ffischerc@itam.cas.cz
000020093 8564_ $$s937903$$uhttps://invenio.itam.cas.cz/record/20093/files/543.pdf$$yOriginal version of the author's contribution as presented on USB, paper 543.
000020093 962__ $$r16048
000020093 980__ $$aPAPER