Noise Correlations at Regional Distances and Receiver Based Studies in Australia

Using a network of 20 portable broad-band seismic stations spanning about one-third of the Australian continent, the impulse response of the Australian continent has been extracted by the cross-correlations of the ambient noise records. The coverage of the stations enabled us to extract impulse responses for the distances up to 1000 km. The frequency characteristics of the impulse response for different combinations of stations and components provide a network of surface wave dispersion coverage at a continental scale. Data from the same stations have also been analysed using other receiver based methods. The combined results provide new insights on the nature of the Australian crust and the Precambrian-Phanerozoic transition in the eastern Australia.