Akatore Fault Paleoseismic Events and Slip Rates, Otago, New Zealand

Otago, New Zealand, is the focus of this paleoseismic study of the Akatore Fault. The dataset presents results from two trenches, ground-penetrating radar profiles, and sediment analyses, revealing at least three reverse fault ruptures. The data was published by Geoscience Australia Data and was last updated on 2026-04-20.

Use Cases

• Modeling earthquake recurrence intervals based on the identified three-event rupture sequence.
• Assessing seismic hazard for Dunedin based on the derived slip rate and recurrence interval estimates.
• Studying fault aperiodicity by analyzing the suggested end of a 110,000-year quiescent period.
• Calibrating geological models using the constrained dates for the antepenultimate, penultimate, and most recent fault events.

Strengths

• Event timing is constrained by specific date ranges for three separate fault ruptures.
• Provides quantitative measures including single-event displacement (1.6–2.7 m), slip rate (0.3–2.4 mm/yr), and recurrence interval (670–5110 years).
• Integrates multiple data sources: trench logs, GPR profiles, and sediment analyses.

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, focusing solely on the Akatore Fault.

Provenance

Source

Geoscience Australia Data

Collection Method

Paleoseismic study involving trench excavation, ground-penetrating radar (GPR) profiling, and sediment analysis.

Time Range

Events constrained between 13,314 B.C. and 1278 A.D., with analysis of a ~125,000-year period.

Freshness

Last updated 2026-04-20 03:41:02.189268; freshness should be verified.

Geography

Akatore Fault, Otago, New Zealand