Product catalogue
Tectonic geomorphology and Holocene uplift rates of the Lae Urban Area, Papua New Guinea
<div>The city of Lae is Papua New Guinea (PNG)’s second largest, and is the home of PNG’s largest port. Here, a convergence rate of ~50 mm/yr between the South Bismarck Plate and the Australian Plate is accommodated across the Ramu-Markham Fault Zone (RMFZ). The active structures of the RMFZ are relatively closely spaced to the west of Lae. However, the fault zone bifurcates immediately west of the Lae urban area, with one strand continuing to the east, and a second strand trending southeast through Lae City and connecting to the Markham Trench within the Huon Gulf.
</div><div>The geomorphology of the Lae region relates to the interaction between riverine (and limited marine) deposition and erosion, and range-building over low-angle thrust faults of the RMFZ. Flights of river terraces imply repeated tectonic uplift events; dating of these terraces will constrain the timing of past earthquakes and associated recurrence intervals. Terrace riser heights are typically on the order of 3 m, indicating causative earthquake events of greater than magnitude 7.
</div><div>Future work will expose the most recently active fault traces in trenches to assess single event displacements, and extend the study to the RMFZ north of Nadzab Airport. These results will inform a seismic hazard and risk assessment for Lae city and surrounding region.</div>
Presented at the 2023 Australian Earthquake Engineering Society (AEES) Conference
Simple
Identification info
- Date (Creation)
- 2023-09-03T12:00:00
- Date (Publication)
- 2024-03-21T00:07:10
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/148842
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Commonwealth of Australia (Geoscience Australia)
Voice Author Clark, D. J.
External Contact Author Griffin, J.
Internal Contact Author Espy, J.
External Contact Author Jonda, L.
External Contact Author Cummins, P.
Internal Contact Author Ghasemi, H.
Internal Contact
- Name
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Australian Earthquake Engineering Society (AEES) Conference, 23-25 November 2023, Brisbane, QLD
- Purpose
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Product developed for the Australian earthquake Engineering Society 2023 annual meeting, 23-25 November, Brisbane.
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Resource provider Place and Communities Division
External Contact Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Clark, D.
Internal Contact
- Spatial representation type
- Topic category
-
- Geoscientific information
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
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Product data repository: Various Formats
- Website
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
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Structural geology and tectonics
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seismic hazard
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tectonic geomorphology
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paleoseismology
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Lae
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Pacific Nations
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Hazard Response
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Natural Hazards
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earthquakes
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Papua New Guinea - PNG
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Published_External
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Resource constraints
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Creative Commons Attribution 4.0 International Licence
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CC-BY
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4.0
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Role Organisation / Individual Name Details User Any
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© Commonwealth of Australia (Geoscience Australia) 2023
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Australian Government Security Classification System
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- 2018-11-01T00:00:00
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Australian Government Security Classification System
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- English
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- UTF8
Distribution Information
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice facsimile
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Link to Conference Page
Link to Conference Page
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Link to Paper
Link to Paper
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- Statement
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<div>Document to be distributed for internal and external review, then published at the conference.</div>
Metadata constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
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urn:uuid/c620dd4a-f072-4b77-8de7-6c2001702a95
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GeoNetwork UUID
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Clark, D.
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Journal Article / Conference Paper
Alternative metadata reference
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Geoscience Australia - short identifier for metadata record with
uuid
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- Date info (Creation)
- 2024-03-20T23:12:55
- Date info (Revision)
- 2024-03-20T23:12:55
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
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Version 2.0, September 2018
- Citation identifier
- http://pid.geoscience.gov.au/dataset/ga/122551