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A GNSS Survey of the Ramu-Markham Fault, Papua New Guinea

Created 16/10/2025

Updated 16/10/2025

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The Ramu-Markham Fault (RMF) runs along the northern edge of the Markham Valley in eastern Papua New Guinea’s Morobe Province. It is the active plate boundary between the South Bismarck Plate and the New Guinea Highlands/Papuan Peninsula Blocks, and is thought to accommodate about 4 cm/yr of convergence associated with the Finisterre arc-continent collision. Because Papua New Guinea’s recently published national seismic hazard map revealed a potential vulnerability of its 2nd largest city, Lae, to RMF earthquakes, Lae has become the focus of a seismic risk study. One of the aims of this study is to improve the characterisation of the earthquake potential along the RMF, and for this reason a new Global Navigation Satellite System (GNSS) campaign has been undertaken to re-survey over 70 existing benchmarks in and around Morobe Province, including about 35 benchmarks in and around the city of Lae itself. The vast majority of these benchmarks have now been surveyed, and in this paper we discuss the survey and a preliminary analysis of the data.

Presented at the 2023 Australian Earthquake Engineering Society (AEES) Conference

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Additional Info

Field Value
Title A GNSS Survey of the Ramu-Markham Fault, Papua New Guinea
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/fffd03a0-b7cf-415b-a704-a6457c76aa70
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 21/03/2024
Geospatial Coverage
Map data © OpenStreetMap contributors
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      ],
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      ],
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      ],
      [
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      ],
      [
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      ]
    ]
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  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "A GNSS Survey of the Ramu-Markham Fault, Papua New Guinea". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/a-gnss-survey-of-the-ramu-markham-fault-papua-new-guinea