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Nat.HazardsEarthSyst.Sci.,12,2051–2064,2012www.nat-hazards-earth-syst-sci.net/12/2051/2012/doi:10.5194/nhess-12-2051-2012©Author(s)2012.CCAttribution3.0License.NaturalHazardsandEarthSystemSciencesLateHolocenelandscapechangehistoryrelatedtotheAlpineFaultdeterminedfromdrownedforestsinLakePoerua,Westland,NewZealandR.M.Langridge1,R.Basili2,L.Basher3,andA.P.Wells41GNSScience,P.O.Box30-368,LowerHutt,NewZealand2IstitutoNazionalediGeofisicaeVulcanologia,ViadiVignaMurata605,00143Rome,Italy3LandcareResearchNZLtd.,PrivateBag6,Nelson7042,NewZealand4c/-2McLennanRd,RDHawea,Luggate,NewZelaandCorrespondenceto:R.M.Langridge([email protected])Received:25July2011–Revised:5March2012–Accepted:14March2012–Published:26June2012Abstract.LakePoeruaisasmall,shallowlakethatabutsthescarpoftheAlpineFaultontheWestCoastofNewZealand’sSouthIsland.Radiocarbondatesfromdrownedpodocarptreesonthelakefloor,asedimentcorefromarangefrontalluvialfan,andlivingtreeringageshavebeenusedtodeducethelateHolocenehistoryofthelake.Rem-...