Crustal and subduction zone attenuation relations for New Zealand earthquakes (original) (raw)
2000, 12th World Conf. on …
Attenuation relations have been developed for 5% damped acceleration response spectra in New Zealand earthquakes. The models take account of the different tectonic types of earthquakes in New Zealand, i.e., crustal, subduction interface and dipping slab, and of the faster attenuation of high-frequency components in the volcanic region. The study used all available data from the New Zealand earthquake accelerograph network that satisfied various selection criteria, supplemented by selected data from digital seismographs. The latter provide additional records from moderateto high-strength rock sites, and of motions involving propagation paths through the volcanic region. Most of the accelerograph sites are on soil, with the few accelerograph rock sites generally being on weak rock. The data have been further augmented by seismograph records from a temporary deployment in the volcanic region. To constrain the model at short distances where New Zealand records are lacking, overseas peak ground acceleration data recorded less than 10 km from the source were included. It was found that New Zealand earthquake motions are mostly similar to those from other parts of the world for the same tectonic class, especially for crustal earthquakes, but that crustal and subduction zone earthquake motions have different spectral shapes.
Sign up for access to the world's latest research.
checkGet notified about relevant papers
checkSave papers to use in your research
checkJoin the discussion with peers
checkTrack your impact
Loading Preview
Sorry, preview is currently unavailable. You can download the paper by clicking the button above.