THE SURFACE EXPRESSION OF SLOW EARTHQUAKES?

Abstract

Two sites are described on transpressive faults in the eastem foothills of New Zealand's Southem Alps, where a precursor peri­od of about 200 years of accelerated downcutting and warping pre­ceded the most recent fault ruptures. Both offsets were predomi­nantly strike-slip and include a throw of about 1 metre, but base­level drop is an order of magnitude larger and extends over kilo­metre scale reaches. [...]