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Testing and Evaluation of Earthquake Rupture Simulations of New Zealand

Govinda Niroula, an Otago Geology PhD candidate, will talk about his work on earthquake rupture simulations for New Zealand.

An effort has been made to test and evaluate the output of a synthetic catalogue of earthquake ruptures for New Zealand.

The earthquake catalogue has been generated using the Rate-State earthquake simulator RSQSim. This simulator uses a physics-based model of rupture nucleation and propagation to forecast long term earthquake catalogues, for example, hundreds of thousands of years.

There are two versions of the catalogue:

  1. Using fault sources from 2010 National Seismic Hazard Model (NSHM)
  2. Using the Community Fault Model (CFM)

Sub-catalogues of 180-year and 50-year are withdrawn from these long term simulated catalogues and then are compared with historical earthquake records in New Zealand by way of magnitude-frequency distribution.

Finally, the catalogue from RSQSim has been used to prepare a probabilistic seismic hazard map for the Alpine Fault and a comparison is made with the 2010 NSHM.

Streaming details

Zoom link: https://bit.ly/otagogeology

Date Thursday, 9 June 2022
Time 1:00pm - 2:00pm
Audience Postgraduate students,Staff,Alumni
Event Category Sciences
Event Type Seminar
CampusDunedin
DepartmentGeology
LocationBenson Common Room, Geology Building and via Zoom
CostFree
Contact NameJack Williams
Contact Emailjack.williams@otago.ac.nz

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