Wellington Fault

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Porirua Kapiti Coast Petone Lower Hutt Scenario: • Subduction to Cook • Mag. 8.9 • 1200 yr recurrence interval Eastbourne Wellington CBD Evans Bay Seatoun Lyall Bay Owhiro Bay Island Bay 750 million 500 100 50 BENFIELD GNS Science
Main Findings • tsunami does not add significantly to New Zealand’s most costly earthquake • or to the second most costly • Porirua and Kapiti experience very little tsunami damage in the scenarios considered here • a very large subduction zone earthquake is the worst local tsunami source • losses from the most costly earthquake, magnitude 7.5 Wellington Fault, are greater than the combined losses from the worst tsunami-causing earthquake • tsunami from very large South American earthquakes might be able to cause higher losses • we haven’t looked at casualties BENFIELD GNS Science
Page 1 and 2: Combined Earthquake & Tsunami Lo$$e
Page 3 and 4: Question from Benfield (in 2006):
Page 5 and 6: … add tsunami to the scenarios
Page 7 and 8: Rock ledge, seaside cliffs Low-lyin
Page 9 and 10: Wellington - expensive stuff BENFIE
Page 11 and 12: Fragility Model BENFIELD GNS Scienc
Page 13 and 14: Uncertainty in fragility function 1
Page 15 and 16: Wellington Fault - vertical deforma
Page 17 and 18: 1855 reconstruction BENFIELD GNS Sc
Page 19 and 20: Subduction-interface rupture extend
Page 21: Estimated Losses Tsunami Source Sha

Wellington Fault

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