An application dated 02 July 2013 for verification of a reference standard of measurement under Regulation 12 of the National Measurement Regulations 1999 was received from the PMB Peak Downs Mine, BHP Billiton Mitsubishi Alliance, for verification of GDA94 position on their owned or managed station monument. This report documents the processing and analysis of GPS data observed by the PMB Peak Downs Mine during a 7-day period from 23 June 2013 to 29 June 2013 (day of year 174 to 180) for the station PDM1 to satisfy the position verification requirements.

The integrity and strength of multi-technique terrestrial reference frames, such as realisations of the International Terrestrial Reference Frame (ITRF), depend on the precisely measured and expressed local-tie connections between space geodetic observing systems at co-located observatories. Australia has several observatories which together host the full variety of space geodetic observation techniques, including Global Navigation Satellites Systems (GNSS), Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR) and Doppler Orbitography and Radiopositioning Integrated by Satellite (DORIS) beacons. This report documents the technical aspects of the survey undertaken to determine the local-tie connections at the Mount Stromlo SLR Observatory. The Mount Stromlo laser ranging observatory is located next the Australian National University (ANU) Research School of Astronomy and Astrophysics on Mount Stromlo in Canberra. The observatory has a Satellite Laser Ranging (SLR) telescope co-located with three permanent GNSS sites, two of which contribute to the International GNSS Service (IGS) network. Nearby there is a national gravity observatory at the ANU school and a radio telescope used for Very Long Baseline Interferometry (VLBI) at the Canberra Deep Space Communication Complex (CDSCC) which is operated by NASA. The survey was conducted in November 2009 by surveyors from Geoscience Australia. Precision classical geodetic observations were combined with geodetic GNSS observations to determine the repeat relationship between the SLR system invariant point (IVP) and the conventional reference points of the GNSS antennas and the surrounding survey control. The results of this survey have been provided to the International Earth Rotation Service (IERS) for inclusion in the next realisation of the ITRF.

An application dated 05 November 2012 for verification of a reference standard of measurement under Regulation 12 of the National Measurement Regulations 1999 was received from the Land and Property Information (LPI), NSW Department of Finance & Services, for verification of GDA94 position on their owned or managed station monument. This report documents the processing and analysis of GPS data observed by the LPI during a 7-day period from 14 October to 20 October 2012 (day of year 288 to 294) for the station GUNN and from 21 October to 27 October 2012 (day of year 295 to 301) for the other fourteen stations to satisfy the position verification requirements.

Abstract n the subject of AGOS corner reflectors submitted to the International Geoscience and Remote Sensing Symposium (IGARSS) meeting to be held in Melbourne, 21-26 July 2013.

The grid was created from the Australian bathymetry and topography grid (2009, version 4). The data represents the difference in elevation between the highest and lowest point within a specified area (a rectangle of 3 by 3 cells). The units are metres.

Gravity data measure small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Woomera_Prohibited_Area_Gravity_Survey_p201350_Complete_SpherCapBouguer.nc grid is a complete spherical cap Bouguer anomaly grid for the Woomera Prohibited Area Gravity Survey, 2013 survey. This gravity survey was acquired under the project No. 201350 for the geological survey of SA. The grid has a cell size of 0.00384798 degrees (approximately 400m). A total of 34706 gravity stations were acquired to produce this grid.

Background This report describes a project which involved the capture and processing of LiDAR and coincident imagery and resultant derived products for the lower reaches of the Darling River. The data joins two existing LiDAR datasets, one to the north covering the Menindee Lakes and the other in the south along the Murray River corridor. It is intended to provide the Murray-Darling Basin Authority with a very accurate, quality assured measurement of topography in order to accurately model the flow and volume of water in the floodplains within the project area. The LiDAR was captured in April and May 2013 at a point density of two 1st return points per square metre within swath, (equivalent to two outgoing laser pulses per square metre at ground level). The specified accuracies; 30cm vertical and 80cm horizontal, were achieved and verified through a rigorous network of ground check points and base stations. A set of seamless products were produced including hydro-flattened bare earth DEMs, DSMs and cartographic contours. The outputs of the project are compliant with National ICSM LiDAR Product Specifications and the NEDF.

The map shows salt lake regions favourable for potash deposits. For a more detailed description of selection method see Jaireth et al (2013)

Layer 06 Base of Injune Creek Group surface Surface produced for the Great Artesian Water Resource Assessment (GABWRA) by Geoscience Australia (http://www.ga.gov.au). This surface was created for 3D visualisation of the Base of Injune Creek Group. The surface is available in the following formats 1. GOCAD surface (.ts) 2. ESRI grid 3. ASCII grid (.grd) Use limitations: 1. GOCAD surface requires program capable of reading GOCAD *.ts (triangulated surface) files 2. ASCII grid data requires re-interpolation by end-user resulting in minor differences to accompanying GOCAD *.ts surface This layer is part of a set comprised of: Layer 01 3-second Digital Elevation Model surface (catalogue #75990) Layer 02 Base of Cenozoic surface (catalogue #75991) Layer 03 Base of Mackunda Formation and equivalents surface (catalogue #76021) Layer 04 Base of Rolling Downs Group surface (catalogue #76022) Layer 05 Base of Hooray Sandstone and equivalents surface (catalogue #76023) Layer 06 Base of Injune Creek Group surface (catalogue #76024) Layer 07 Base of Hutton Sandstone surface (catalogue #76025) Layer 05-07 Base of Algebuckina Sandstone surface (catalogue #76952) Layer 08A Base of Evergreen and Marburg formations (catalogue #76026) Layer 08B Base of Poolowanna Formation (catalogue #76953) Layer 09 Base of Precipice Sandstone and equivalents surface (catalogue #76027) Layer 10 Base of Jurassic-Cretaceous sequence surface (catalogue #76028) This dataset and associated metadata can be obtained from www.ga.gov.au, using catalogue number 76024.

Gravity data measure small changes in gravity due to changes in the density of rocks beneath the Earth's surface. The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Southern_Wiso_Basin_Gravity_CSCBA267GU.nc grid is a complete spherical cap Bouguer anomaly grid for the Southern Wiso Basin Gravity Survey, 2013 survey. This gravity survey was acquired under the project No. 201380 for the geological survey of NT. The grid has a cell size of 0.00742586 degrees (approximately 800m). A total of 3859 gravity stations were acquired to produce this grid.