Akatore Fault Paleoseismic Events with Dates and Displacement Measurements

Paleoseismic study results for the Akatore Fault in Otago, New Zealand, hosted by the Australian Ocean Data Network. The dataset details at least three reverse fault ruptures with constrained date ranges and single-event displacements of 1.6–2.7 meters. It suggests the fault ended a minimum 110,000-year period of quiescence and provides slip rate and recurrence interval estimates for hazard assessment.

Use Cases

• Modeling earthquake recurrence intervals based on the 670–5110 year range and event dates provided.
• Assessing seismic hazard for nearby Dunedin based on the suggested continuation of high recent earthquake rates.
• Analyzing fault aperiodicity based on the described long quiescence period followed by clustered events.
• Correlating geological features like the 125 ka marine terrace displacement with specific seismic events.

Strengths

• Provides specific date ranges for three paleoseismic events (e.g., 1047–1278 A.D. for the most recent).
• Includes quantified displacement measurements (1.6–2.7 m) and slip rates (0.3–2.4 mm/yr).
• Contextualizes findings within a long-term geological timeline, referencing a 110,000-year quiescence period.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network

Collection Method

Paleoseismic study involving trench analysis, GPR profiles, and sediment analyses.

Time Range

Events constrained between 13,314 B.C. and 1278 A.D.

Freshness

Last updated 2026-04-10 19:54:36.735599; freshness should be verified.

Geography

Akatore Fault, Otago, New Zealand