Scholarlink

A new geodetic datum for Papua New Guinea, PNG2020 was approved and funded for development by the PNG Government in May 2024. The need to modernise PNG’s geodetic datum has been motivated by the very complex tectonic setting of PNG and associated deformation. This complexity is exemplified by very rapid microplate rotation, plate boundary strain accumulation, seismic activity and volcanism. PNG has one of the most complex and rapid tectonic regimes globally. All of these tectonic effects have significantly distorted the current datum PNG94 cumulatively since its realisation and gazettal in 1996. This paper presents the status of development of the new PNG2020 datum. Static GNSS observations over the PNG geodetic network will be completed by mid-2026 by the geodetic section of the Office of the Surveyor General (OSG) in collaboration with the Papua New Guinea University of Technology (PNGUoT) and the private sector. The observations are on a widespread network of geodetic stations and permanent survey marks (PSM) around PNG and the entire archive of static GNSS observations from 1992 to the present day is being re-analysed in order to estimate a new velocity model for PNG. The model will be provided in the recently released geodetic grid exchange format (GGXF) developed by OGC and also the NTv2 format. The velocity model will be used to transform ITRF2020 positions to PNG2020 with high precision. A static displacement grid will also be developed for transformations between PNG94, AGD66 and PNG2020.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

PNG2020 a New Geodetic Reference Frame for Papua New Guinea

  • 章节

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

查看全文
  • Richard Stanaway,
  • Edwin Nidkombu,
  • Lui Gawi

摘要

A new geodetic datum for Papua New Guinea, PNG2020 was approved and funded for development by the PNG Government in May 2024. The need to modernise PNG’s geodetic datum has been motivated by the very complex tectonic setting of PNG and associated deformation. This complexity is exemplified by very rapid microplate rotation, plate boundary strain accumulation, seismic activity and volcanism. PNG has one of the most complex and rapid tectonic regimes globally. All of these tectonic effects have significantly distorted the current datum PNG94 cumulatively since its realisation and gazettal in 1996. This paper presents the status of development of the new PNG2020 datum. Static GNSS observations over the PNG geodetic network will be completed by mid-2026 by the geodetic section of the Office of the Surveyor General (OSG) in collaboration with the Papua New Guinea University of Technology (PNGUoT) and the private sector. The observations are on a widespread network of geodetic stations and permanent survey marks (PSM) around PNG and the entire archive of static GNSS observations from 1992 to the present day is being re-analysed in order to estimate a new velocity model for PNG. The model will be provided in the recently released geodetic grid exchange format (GGXF) developed by OGC and also the NTv2 format. The velocity model will be used to transform ITRF2020 positions to PNG2020 with high precision. A static displacement grid will also be developed for transformations between PNG94, AGD66 and PNG2020.