Legend (Public/Canterbury_Liquefaction_Susceptibility)

Liquefaction occurrence - September 2010 Darfield (Canterbury) Earthquake (0) Liquefaction Flooding - sediment Flooding - water Unknown Liquefaction occurrence - February 2011 Christchurch Earthquake (1) Liquefaction Flooding - sediment Flooding - water Unknown Liquefaction occurrence November 2016 (24) Earthquake epicentre Evidence of liquefaction Canterbury historic liquefaction occurance (22) 1869 Christchurch earthquake (magnitude 4.7) epicentre 1869 Christchurch earthquake (magnitude 4.7) reported liquefaction 1881 Castle Hill earthquake (magnitude 6.0) epicentre 1881 Castle Hill earthquake (magnitude 6.0) reported liquefaction 1888 North Canterbury earthquake (magnitude 7.0) epicentre 1888 North Canterbury earthquake (magnitude 7.0) reported liquefaction 1901 Cheviot earthquake (magnitude 6.8) epicentre 1901 Cheviot earthquake (magnitude 6.8) reported liquefaction 1922 Motunau earthquake (magnitude 6.4) epicentre 1922 Motunau earthquake (magnitude 6.4) reported liquefaction Eastern Canterbury liquefaction susceptibility line (2012) (2) Eastern Canterbury liquefaction vulnerability categories (2012) (3) Liquefaction damage is possible. Liquefaction damage is unlikely. CCC Study Area Kaikoura liquefaction vulnerability categories (2019) (20) Liquefaction damage is possible Liquefaction damage is unlikely Liquefaction damage is unlikely (very low liquefaction vulnerability) Kaikoura liquefaction susceptibility (2009) (4) Zone of low liquefaction potential: Holocene alluvium, possibility of local areas of liquefaction, limited in extent and area. Zone of very low liquefaction potential: Alluvium older than Holocene, very small possibility of liquefaction in local, isolated areas. Zone of nil to extremely low liquefaction potential: Rock or hill soils. Hurunui liquefaction susceptibility (2011) (5) Zone of low to high liquefaction potential Zone of low liquefaction potential Zone of very low liquefaction potential Zone of nil to extremely low liquefaction potential Waimakariri liquefaction susceptibility (2009) (6) Zone of low to high liquefaction potential Zone of low liquefaction potential Zone of very low liquefaction potential Zone of nil to extremely low liquefaction potential Selwyn liquefaction susceptibility (2006) (7) Zone of moderate liquefaction potential Zone of low liquefaction potential Zone of very low liquefaction potential Zone of nil to extremely low liquefaction potential Outside mapped area Ashburton liquefaction susceptibility (2002) (8) Zone of low liquefaction potential Zone of very low liquefaction potential Zone of nil to extremely low liquefaction potential Outside mapped area Ashburton liquefaction vulnerability categories (2024) (31) Liquefaction damage is possible Liquefaction damage is unlikely Liquefaction damage is unlikely (very low liquefaction vulnerability) Water Ice Timaru liquefaction vulnerability categories (2020) (9) Liquefaction damage is possible Liquefaction damage is unlikely Mackenzie liquefaction vulnerability categories (2023) (29) Liquefaction damage is possible Liquefaction damage is unlikely Liquefaction damage is unlikely (very low liquefaction vulnerability) Water Ice Mackenzie liquefaction susceptibility (2008) (25) Extremely low to no liquefaction potential Low liquefaction potential Very low liquefaction potential Waimate liquefaction vulnerability categories (2022) (28) Liquefaction damage is possible Liquefaction damage is unlikely Liquefaction damage is unlikely (Very Low Liquefaction Vulnerability) water Waitaki liquefaction vulnerability categories (2023) (30) Liquefaction damage is possible Liquefaction damage is unlikely Liquefaction damage is unlikely (very low liquefaction vulnerability) Water Ice Waitaki liquefaction vulnerability categories (2020) (26) Liquefaction damage is unlikely (very low liquefaction vulnerability) Liquefaction damage is unlikely Liquefaction damage is possible Water