Name: 2005 Opus Regional Analysis - Liquefaction Susceptibility

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Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>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><P><SPAN>The liquefaction susceptibility has been mapped into 3 susceptibility classes depending on nature and density of soils:</SPAN></P><P><SPAN>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><UL><LI><P><SPAN>Material Description: Very Dense/Hard - Alluvium, Moraine Remnants, Marine Terraces. Tertiary &amp; Basement Rocks</SPAN></P></LI></UL><P><SPAN>Class B: Low Susceptibility - Liquefaction and settlement are unlikely, but localised areas may liquefy in a large earthquake.</SPAN></P><UL><LI><P><SPAN>Material Description: Dense/Firm - Alluvium, Fans, Till, Outwash, Old Lake Beaches, Moraine Remnants, Marine Terraces</SPAN></P></LI></UL><P><SPAN>Class C: Possibly Susceptible - Very loose to medium dense sediments, liquefaction and settlement are possible with seismic shaking of sufficient intensity.</SPAN></P><UL><LI><P><SPAN>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><P><SPAN>For more information, see Section 10 and Map 22 &amp; 23 of Seismic Risk in the Otago Region (Mar 2005) - https://qldc.t1cloud.com/T1Default/CiAnywhere/Web/QLDC/ECMCore/Rendition/Get?docsetId=696908&amp;renditionType=pdf&amp;suite=ECM.</SPAN></P></DIV></DIV></DIV>

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