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

Geoscience Australia data presented at the 2023 Australian Earthquake Engineering Society Conference focuses on the Ramu-Markham Fault Zone near Lae. The dataset likely contains geomorphic evidence, such as river terrace heights of about 3 meters, used to infer past earthquakes greater than magnitude 7. This work aims to inform a seismic hazard and risk assessment for Papua New Guinea's second-largest city and its major port.

Use Cases

• Modeling seismic hazard and risk for Lae city based on fault zone geometry and uplift rates.
• Estimating earthquake recurrence intervals based on dated river terraces.
• Analyzing the relationship between tectonic uplift and regional geomorphology described in the study.
• Mapping active fault traces for urban planning in a region with a ~50 mm/yr plate convergence rate.

Strengths

• Focuses on a specific, high-risk urban area with a ~50 mm/yr plate convergence rate.
• Incorporates field observations like river terrace riser heights, typically on the order of 3 m.
• Research was presented at a recognized professional conference (2023 AEES).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data freshness should be verified; last metadata update was 2026-04-30.

Provenance

Source

Geoscience Australia Data

Collection Method

Field study involving geomorphic analysis and planned trenching of fault traces.

Time Range

Holocene

Freshness

Last updated 2026-04-30 14:35:33.600115; freshness should be verified

Geography

Lae Urban Area and the Ramu-Markham Fault Zone, Papua New Guinea