Refining the Moho across the Australian continent

SUMMARY In recent years, there has been a considerable expansion of deployments portable seismic stations across Australia, which have analysed by receiver function or autocorrelation methods to extract estimates Moho depth. An ongoing program full-crustal reflection profiles now provided more than 25 000 km transects that interpreted for structure. The data set is further augmented extensive marine results. These new sources combined with earlier refraction and results provide full continental coverage, though some desert areas remain limited sampling. dense sampling the indicates presence rapid changes in depth, so, surface constructed using an approach allows different weighting spatial influence depending on nature estimate. inclusion from continental-wide gravity inversion low helps resolve continent-ocean transition additional control least sampled zones. refined distribution widespread smaller-scale variations Strong lateral contrasts crustal thickness remain, but become subdued improved critical areas. main differences lie previously poorly regions around Lake Eyre Basin, where passive indicate somewhat thicker crust still strong contrast cratonic zone west.