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The purpose of the study was to provide high-level information on the recurrence internal and magnitude of damaging earthquakes in Otago, designed to assist Local Territorial Authorities perform future 'lifelines' projects.<\/SPAN><\/P>

The liquefaction susceptibility has been mapped into 3 susceptibility classes depending on nature and density of soils:<\/SPAN><\/P>

Class A: Not Susceptible - Liquefaction is unlikely in any scenario, but some strength loss may occur in surficial materials in a large earthquake.<\/SPAN><\/P>

  • Material Description: Very Dense/Hard - Alluvium, Moraine Remnants, Marine Terraces. Tertiary & Basement Rocks<\/SPAN><\/P><\/LI><\/UL>

    Class B: Low Susceptibility - Liquefaction and settlement are unlikely, but localised areas may liquefy in a large earthquake.<\/SPAN><\/P>

    • Material Description: Dense/Firm - Alluvium, Fans, Till, Outwash, Old Lake Beaches, Moraine Remnants, Marine Terraces<\/SPAN><\/P><\/LI><\/UL>

      Class C: Possibly Susceptible - Very loose to medium dense sediments, liquefaction and settlement are possible with seismic shaking of sufficient intensity.<\/SPAN><\/P>

      • Material Description: Peat, Mud, Swamp, Tailings, Reclamation, Fill, and Loose/Soft to Medium Dense: Alluvium, Lake Deposits, Beach Gravels and Sands, Scree, Alluvial Fans, Sand Dunes, Till, Alluvium.<\/SPAN><\/P><\/LI><\/UL>

        For more information, see Section 10 and Map 22 & 23 of Seismic Risk in the Otago Region (Mar 2005) - https://qldc.t1cloud.com/T1Default/CiAnywhere/Web/QLDC/ECMCore/Rendition/Get?docsetId=696908&renditionType=pdf&suite=ECM.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "copyrightText": "OPUS, ORC", "editFieldsInfo": null, "ownershipBasedAccessControlForFeatures": null, "syncCanReturnChanges": false, "relationships": [], "isDataVersioned": false, "isDataArchived": false, "infoInEstimates": [ "extent", "count" ], "isDataBranchVersioned": false, "isDataReplicaTracked": false, "isCoGoEnabled": false, "modelName": "GP_770213110", "supportsRollbackOnFailureParameter": true, "archivingInfo": { "supportsQueryWithHistoricMoment": false, "startArchivingMoment": -1 }, "supportsStatistics": true, "supportsExceedsLimitStatistics": true, "supportsAdvancedQueries": true, "supportsValidateSQL": true, "supportsCoordinatesQuantization": true, "supportsQuantizationEditMode": true, "supportsCalculate": 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