Seismic traces

This signal is from the Canterbury earthquake, magnitude 7.1 on the Richter scale. The earthquake occurred at about 4.35 am on 4 September 2010. This seisomograh is from a motion sensor located over 1,000 km away in Herne Bay, Auckland

We acknowledge the New Zealand GeoNet project and its sponsors EQC, GNS Science and LINZ, for providing this image.