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  • This report outlines the high precision level survey completed between the Sea Level Fine Resolution Acoustic Measuring Equipment (SEAFRAME) tide gauge and the Continuous Global Navigation Satellite System (CGNSS) station in Nuku'alofa, Tonga from 9th to 16th April 2013.

  • This report outlines the high precision level survey completed between the Sea Level Fine Resolution Acoustic Measuring Equipment (SEAFRAME) Tide Gauge Station and continuous Global Navigation Satellite Systems (GNSS) Station in Honiara, Solomon Islands from 22nd to 27th June 2013.

  • This report outlines the level survey completed during the visit to Tuvalu between 22 and 29 May 2012.

  • This report outlines the high precision level survey completed between the Sea Level Fine Resolution Acoustic Measuring Equipment (SEAFRAME) tide gauge and the Continuous Global Navigation Satellite System (CGNSS) Station in Funafuti, Tuvalu from 18th - 25th July 2013.

  • This report outlines the high precision level survey completed between the SEAFRAME (Sea Level Fine Resolution Acoustic Measuring Equipment) tide gauge and continuous GPS (Global Positioning System) station and the newly established GNSS (Global Navigation Satellite System) Station in Port Vila, Vanuatu from 16th - 21st October 2012.

  • The annual Asia Pacific Regional Geodetic Project (APRGP) GPS campaign is an important activity of the Geodetic Reference Frame for Sustainable Development Working Group (WG) of the Regional Committee of United Nations Global Geospatial Information Management for Asia and the Pacific (UN-GGIM-AP). This document overviews the data analysis of the APRGP GPS campaign undertaken in 2013. The GPS data were processed using version 5.0 of the Bernese GPS Software in a regional network together with selected IGS (International GNSS Service) sites. The GPS solution was constrained to the ITRF2008 reference frame through adopting IGb08 coordinates on selected IGS reference sites and using the final IGS earth orientation parameters and satellite ephemerides products.

  • This Record describes techniques which can be used to predict surface deformation caused by natural or anthropogenic subsurface fluid changes. Using predictive (forward) models, simulations have been developed to estimate the range of surface deformation caused by the Coal Seam Gas (CSG) extraction operations in the Surat Basin. The objectives of this research were to: - Develop a predictive model that enables Geoscience Australia to estimate the magnitude and areal extent of surface deformation caused by natural or anthropogenic fluid activities. - Report the capability, accuracy and limitations of the predictive model. - Apply the predictive model to Coal Seam Gas operations in the Surat Basin, Queensland. - Describe the monitoring techniques capable of measuring subsurface fluid changes - Discuss how geodetic data can be used to constrain the poroelastic properties of reservoirs.

  • Editors; Hoatson, D.M. and Lewis, B.C. Authors: Hoatson, D.M., Miezitis, Y., Jaireth, S. and Huston, D.L. The major aims of this report are to review the distribution, geological characteristics, resources, and potential of PGEs in Australia, and provide a mineral-systems-based framework for successful low-risk exploration. A mineral-system approach has been used to classify ~500 PGE deposits and occurrences documented in this report. This approach focuses on mineral-forming processes critical to the formation of a particular deposit. It differs from descriptive classifications in that it can be used to predict new areas and types of PGE mineralisation. The classification used is hierarchical in structure, with the highest-level category of deposits called 'Mineral-System Class'. There are twelve major classes that fall within the broad-mineral systems: Orthomagmatic (classes 1 to 7), Hydrothermal-Metamorphic (class 8), Regolith-Laterite (class 9), Placer (class 10), Astrobleme-related (class 11), and a final class with minor or unknown economic importance (class 12). This report concludes that, as seen globally, mineralised stratabound layers in Precambrian layered mafic-ultramafic intrusions in Australia are considered to have high potential for a major economic PGE resource. Such layers are attractive targets as they display: lateral continuity; have uniform grades (1 g/t to 6 g/t Pt+Pd+Au) and thicknesses; contain a significant component of the elements Pt, Pd, Rh, Au; and have potential for large-tonnage multi-element deposits (PGEs, Cr, Cu, Ni, Co, Au). Large Igneous Provinces may also provide opportunities for major economic PGE resource discoveries, despite the challenges of: defining favourable mineralised environments across large areas and under cover; lack of reliable geochronological and geochemical data for identifying different phases of the magmatic system; and a general perception that the global type example (Norilsk-Talnakh in Russia) may be a 'unique' mineral system.

  • SHRIMP U-Pb zircon ages are presented for 27 samples from the Lachlan Orogen, southern Thomson Orogen and New England Orogen of New South Wales. The work was conducted under the auspices of a National Geoscience Agreement (NGA) between Geoscience Australia and the Geological Survey of New South Wales (GSNSW), to support regional mapping by GSNSW. The data reported here were collected over the period from February 2011 to June 2013.

  • Landslides are a complex geological hazard triggered by a combination of factors depending on their magnitude and type (Figure 1). There are a number of methodologies employed for landslide susceptibility mapping around the world. The method adopted should vary according to the individual characteristics of the landslide being considered. The method of landslide susceptibility mapping adopted here was developed using an existing method, the InfoVal method (van Westen 1997), adapting it for use with the open source software QGIS. QGIS was chosen as the GIS system due to its use by other natural hazard scientists in Papua New Guinea and in the region, and because it is free and open source.