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On the anniversary of the Kaikoura earthquake, more than 100 overseas scientists have joined about 20 more New Zealand geologists in Blenheim for the eighth annual International Workshop on Paleoseismology, Active Tectonics and Archeoseismology. Kathryn Speaks to Dr Edwin Nissen who's a geophysicist from the University of Victoria in British Columbia, Canada who's in Blenheim for the conference. He says from a geophysical point of view, the Kaikoura quake is one of the world's most interesting ruptures.