The findings published in the Bulletin of the Seismological Society of America suggest that some places along the fault, particularly around the towns of Hokitika and Greymouth, could experience strong ground shaking from Alpine fault earthquakes more often than previously thought.. The Southern Alps have been formed over millennia by upthrust from successive earthquakes on the Alpine Fault. Revising the Displacement History of New Zealand's Alpine Fault . The Alpine Fault runs for over 800km up the spine of the South Island. It’s the part of the active boundary between the Pacific and Australian tectonic plates where they intersect on land. The Alpine Fault is sometimes compared with California's San Andreas Fault, being another fast-moving strike slip fault near a plate boundary. The Alpine Fault runs right through the heart of New Zealand's glacier county on the country's south island. Scientists currently regard the fault as having several sections, each of which exhibits a different rupture history and all of which can generate a large earthquake. The fault line is where the Eurasian … Geologists and authorities are racing to quantify what might happen, and how they might respond in the event of the next one, likely to occur some time in the next 50 years. Previously scientists had determined the ages for only the last four earthquakes … The Alpine Fault ruptures—on average—every 330 years with a magnitude 8 earthquake. A new study by GNS Science has found evidence for a previously unrecognised rupture in the first half of the 19 th century at the northern tip of the central section. The Alpine Fault is sometimes compared with California’s San Andreas Fault, being another fast-moving strike slip fault near a plate boundary. 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