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  • 2020-2024  (4)
  • 1990-1994
  • 2023  (4)
  • 1
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    Sydney University Press
    Publication Date: 2024-04-04
    Description: The archaeological assemblage from the Hyde Park Barracks is one of the largest, most comprehensive and best preserved collections of artefacts from any 19th-century institution in the world. Concealed for up to 160 years in the cavities between floorboards and ceilings, the assemblage is a unique archaeological record of institutional confinement, especially of women. The underfloor assemblage dates to the period 1848 to 1886, during which a female Immigration Depot and a Government Asylum for Infirm and Destitute Women occupied the second and third floors of the Barracks. Over the years the women discarded and swept beneath the floor thousands of clothing and textile fragments, tobacco pipes, religious items, sewing equipment, paper scraps and numerous other objects, many of which rarely occur in typical archaeological deposits. These items are presented in detail in this book, and provide unique insight into the private lives of young female migrants and elderly destitute women, most of whom will never be known from historical records.
    Keywords: Archaeology ; History ; thema EDItEUR::N History and Archaeology::NK Archaeology ; thema EDItEUR::N History and Archaeology::NH History::NHB General and world history
    Language: English
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  • 2
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    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Publication Date: 2023-06-29
    Description: New Zealand’s position straddling the Australian and Pacific plate boundary means it experiences both secular plate motion, and non-secular motions associated with earthquakes. The purpose of New Zealand's 39 PositioNZ CORS sites are to maintain the national datum as these events occur. Positions and velocities from the PositioNZ network are used to develop a deformation model which translates between present day IGS20 coordinates into NZGD2000. Maintaining an up-to-date deformation model is a technical challenge in the face of ongoing earthquake deformation and New Zealand's small tax base is unable to pay for a dense network of GNSS sites that would allow for more comprehensive land movement monitoring. Our long term datum monitoring is done through a homogeneously reprocessed solution including historical data from 39 PositioNZ CORS sites, 149 Geonet CORS sites, and 157 private CORS sites (new addition) all aligned to 195 IGS20 core reference sites using a double difference strategy on Bernese 5.4 GPS software. This solution is computed with IGS Final products from 27 November 2022 to present, and re-analysed products from 2000 - 2020. This solution applies newly available models in Bernese 5.4 including for FES2016b ocean tide loading, apriori troposphere values from VM3G, and DESAI2016 sub-daily pole model and IERS2010_V1.2.0 mean pole model. The results of this solution will be presented and discussed, including the effect of switching to from IGB14 to IGS20 and an assessment of the suitability and value added by including CORS sites installed for a variety of purposes in our network solution.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 3
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    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Publication Date: 2023-07-03
    Description: Monitoring the Earth is undertaken in numerous geometric and physical reference frames and coordinate reference systems. Analysis often requires transformation of coordinates between these frames. As the accuracy of positioning and geospatial data improves, the use of gridded data to describe the quantities used in these coordinate transformations is increasing. Rectangular grids also provide an efficient means of disseminating geodetic data. IAG Commission 1 Working Group 1.3.1 in association with the Open Geospatial Consortium (OGC) have developed a Geodetic data Grid eXchange Format (GGXF) for quantifying and disseminating gridded geodetic data. GGXF was developed in conjunction with a functional model for deformation (DMFM) including support for time-dependent changes, but has been designed to support any type of regularly-gridded geodetic data including but not limited to geoid models, offsets between reference frames (of one, two or three dimensions), velocity grids, tidal surfaces, etc. The purpose of GGXF is to provide a comprehensive, efficient distribution format through which producers can disseminate gridded geodetic data and users can exchange and apply this information. This presentation gives an overview of the GGXF format and describes how it can be applied in geodetic practice.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 4
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    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Publication Date: 2023-09-06
    Description: IAG Commission 1 Working Group 1.3.1 in association with the Open Geospatial Consortium (OGC) have developed a deformation model functional model (DMFM) and an associated Geodetic Grid Exchange Format (GGXF) for quantifying and disseminating deformation information for use in time-dependent reference frame transformations. The purpose of the DMFM is to provide a framework through which producers and users of deformation models can describe crustal displacement and velocity data using robust grid formats such as GGXF. Using the DMFM and GGXF combined, positional displacements can be readily applied in point motion coordinate operations. This approach is essential in deforming zones where conformal time-dependent transformation approaches do not adequately handle crustal deformation. The presentation describes how the DMFM can be applied in typical use cases. These include: transforming GNSS PPP positions (e.g. in an IGS20 frame) to a national geodetic datum in a deforming zone and transformations between reference frames across earthquake events resulting in significant coseismic and postseismic crustal displacement. The DMFM and associated GGXF provide a framework for developers of geodetic software such as those used in GIS, GNSS processing and positioning to better handle complex deformation.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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