Two trenches reveal at least three reverse fault ruptures on the Akatore Fault, constrained between 13,314 B.C. and 1278 A.D. GPR profiles and sediment analyses suggest these earthquakes ended a minimum 110,000-year period of quiescence. The dataset presents slip rates of 0.3–2.4 mm/yr and recurrence intervals of 670–5110 years for seismic hazard assessment.
Use Cases
- Model earthquake recurrence intervals based on paleoseismic event dates
- Assess seismic hazard for nearby Dunedin based on fault slip rates
- Study fault aperiodicity based on the 110,000-year quiescence period
- Correlate marine terrace displacement with fault rupture events
Strengths
- Event timing constrained to specific ranges (e.g., 1047–1278 A.D. for the most recent event)
- Provides quantitative slip rates (0.3–2.4 mm/yr) and recurrence intervals (670–5110 years)
- Analysis integrates trench data, 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
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Paleoseismic study involving trench excavation, GPR profiling, and sediment analysis.
- Time Range
- Events constrained between 13,314 B.C. and 1278 A.D.
- Freshness
- Last updated 2026-04-16 15:01:13.993577; freshness should be verified
- Geography
- Akatore Fault, Otago, New Zealand