AusPass is a service dedicated to the acquisition, management, and distribution of passive seismological data in Australia. Extensive fieldwork projects are conducted across the country, organized in seismic arrays (i.e. groups of seismic stations). Eastern Indonesia is one of the least well understood geological domains of our planet, and yet the region provides a truly remarkable natural experiment for unraveling the complex dynamics of convergent tectonics. The recent, subduction-related collision of the Australian continental lithosphere with the active Banda arc effectively captures the initiation of convergence orogenesis and offers a rare glimpse into a process that has shaped Earth’s evolution over geologic time, as well as providing fresh insights into seismic hazards confronting the world’s fourth most populous country. A number of mysteries remain about the transition from subduction to arc-continental collision in the Banda arc, reflecting fundamental gaps in the general understanding of collisional tectonics.

The National Argon Map (NAM) is an AuScope Opportunity supported Project with ANU Argon team, an Oversight Committee, and the Australian Argon Laboratories Network: ANU, Melbourne University, University of Queensland and Curtin University. Having the argon laboratories working as a network has been key to AuScope. NAM is providing an opportunity for researchers, students, and industry to explore 40Ar/39Ar as a geochronometer. Allowing the scientific community the opportunity to be exposed to a wide variation of scientific scenarios that this geochronometer can provide. The information provided by NAM is extensive in the geological context, the sample characterisation and report. The map has been augmented by Geoscience Australia legacy datasets. Clicking on each icon on the map will provide you with links to the original proposal, sample information, citation information and a final report with 40Ar/39Ar data.

The Rosebery-Lyell 3D geological and geophysical model is an extension and refinement of previous MRT 3D models in the region. It expresses a new structural synthesis based on mapping and multiple cross sections produced by numerous geologists over several decades. It extends to a depth of 10 km within the area depicted at left. The model is constrained by 3D geophysical modelling using MRT's gravity and magnetic survey data coupled with drilling and rock physical property databases. This information has been used to derive uncertainty estimates for each element in the model volume. The model files also include nominal density and magnetic susceptibility estimates obtained for each voxel, thus incorporating intra-unit variations.

AusPass is a service dedicated to the acquisition, management, and distribution of passive seismological data in Australia. Extensive fieldwork projects are conducted across the country, organized in seismic arrays (i.e. groups of seismic stations). The MINQ experiment was conducted by the Australian National University and the Geological Survey of Queensland as part of the AuScope Infrastructure program, and involved setting up an array of portable earthquake recorders on a rectangular grid with approximately 50km spacing, beginning in the Mount Isa area. Instruments are ANU solid state recorders and Lennartz 3Dlite-MII seismometers. The instruments recorded seismic waves passing through the Earth from distant earthquakes in the Pacific, Indian and Southern Oceans. By comparing the signals and their arrival times at different sites it is possible to learn about the geological history of North Queensland from structures we can see deep in the crust. We can resolve these seismic velocity changes in this way down as far as 50 to 100km depth. The images are constructed from the travel times of seismic waves using ray tracing and seismic tomography. An initial 21 instruments were installed in the Mount Isa area in June 2009 as the first phase of a deployment that moved progressively to the east over several years. The network was expanded to 25 instruments when the first data was collected on an instrument service run in September. Most of the instruments were moved in late 2010 to the second phase of the experiment, MINQ-B, is installed on the plains east of Cloncurry.

As part of a wider AuScope project 35 short-period (Lennartz 3D-Lite MkII) seismometers were deployed across the Gawler Craton in South Australia. Station spacing was approximately 60 km and covers the area of over 118000 square km encompassing the Eyre Peninsula, Yorke Peninsula, Stuart Shelf and Torrens Hinge zone. Stations recorded continuous three component data for a period of 6-8 months. The instruments are capable of recording data from both local and distant earthquakes. The primary aim of this arrays is to increase data coverage in this part of Australia for seismic imaging. There are few permanent seismographs in the region covered by this array. This area of South Australia is also seismically active and local earthquake data recorded on this array will help improve our ability to locate and characterize these events.

AusPass is a service dedicated to the acquisition, management, and distribution of passive seismological data in Australia. Extensive fieldwork projects are conducted across the country, organized in seismic arrays (i.e. groups of seismic stations). The CAPRAL array was designed to improve local earthquake location and hence understanding of neotectonics in northwestern Australia. These stations provide a useful framework to improve coverage of the Pilbara craton and the Capricorn orogen. The array consists of 27 site with Guralp CMG-3ESP seismometers and Earthdata digitisers. Sample rates are 25 samples/sec.

AusPass is a service dedicated to the acquisition, management, and distribution of passive seismological data in Australia. Extensive fieldwork projects are conducted across the country, organized in seismic arrays (i.e. groups of seismic stations). The 2000-2001 deployment of broad-band instruments is designed to try to understand the crustal variations associated with the cratons of Western Australia and to provide improved coverage of the western part of the continent using surface wave paths to compensate for equipment problems encountered in the later stages of the SKIPPY project. Instruments included Guralp 40T and 3ESP sensors, a STS2 sensor, and Orion and Reftek digitisers. Data was sampled at 25 samples/sec

AusPass is a service dedicated to the acquisition, management, and distribution of passive seismological data in Australia. Extensive fieldwork projects are conducted across the country, organized in seismic arrays (i.e. groups of seismic stations). This array is part of the WOMBAT rolling array. It consist of 31 short-period (Lennartz 3D-Lite MkII) and 5 broadband seismometers. Station spacing is approximately 50 km. Funding was provided by the Australian Research Council as part of a Discovery Project DP0556282.