Tectonic Geomorphology and Holocene Uplift Rates of Lae, Papua New Guinea

Lae, Papua New Guinea's second-largest city, is the focus of a tectonic geomorphology study. The research analyzes deformed river terraces and marine deposits to estimate Holocene uplift rates of ~12 m/kyr and earthquake recurrence intervals of 300-400 years. This dataset, part of a PNGAus partnership project, was contributed by the Australian Ocean Data Network.

Use Cases

• Model seismic hazard recurrence intervals based on the 300-400 year event cycle mentioned.
• Estimate regional uplift rates using the reported ~12 m/kyr figure.
• Map active fault traces based on the described bifurcation of the Ramu-Markham Fault Zone.
• Correlate terrace riser heights of 2.5-3.0 m with causative earthquake magnitudes greater than 7.0.

Strengths

• Provides specific uplift rate estimates (~12 m/kyr) and earthquake recurrence intervals (300-400 years).
• Includes concrete geomorphic observations, such as terrace riser heights of 2.5-3.0 m.
• Originates from a formal international partnership project (PNGAus).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to data_gov_au.

Provenance

Source

Australian Ocean Data Network

Collection Method

Tectonic geomorphology study involving analysis of deformed river terraces and preliminary dating of deposits.

Time Range

Holocene

Freshness

Last updated 2026-06-04 08:41:42.077694; freshness should be verified.

Geography

Lae Urban Area, Papua New Guinea