20 July 1975 earthquake data from Geoscience Australia, detailing a magnitude MS7.9 event near Bougainville. The dataset describes over $300,000 in damage, a two-metre tsunami, and aftershocks across a 12,500 square kilometre area. It includes analysis of fault mechanisms and identifies a nearby aseismic zone considered a future earthquake risk.
Use Cases
- Modeling tsunami generation and coastal impact based on the described two-metre wave amplitude.
- Analyzing patterns of geological hazards like landslides and liquefaction triggered by seismic activity.
- Mapping aftershock distribution and fault mechanics based on the described 12,500 sq km elliptical area and focal depths of 30-70 km.
- Assessing economic impact of natural disasters using the reported $300,000 (Australian) damage estimate.
Strengths
- Includes specific quantitative details such as a $300,000 damage estimate and a two-metre tsunami amplitude.
- Describes a spatially defined aftershock zone covering 12,500 square kilometres.
- Provides geological context including fault-plane solution with a dip of about 37° and focal depths of 30-70 km.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data is provided in PDF/HTML formats, which may require extraction for computational analysis.
Provenance
- Source
- Geoscience Australia Data
- Time Range
- 20 July 1975 and associated aftershock period
- Freshness
- Last updated 2026-04-30 15:15:36.229011; freshness should be verified.
- Geography
- Northern Solomon Islands chain, southern Bougainville/Shortland Islands region, southwestern coast of Bougainville