Northern Solomon Islands were affected by a major earthquake on 20 July 1975. The event, with a magnitude of MS7.9, caused at least $300,000 in damage, triggered a tsunami, and was documented by the Australian Ocean Data Network. Aftershock epicenters covered an elliptical area of 12,500 square kilometers.
Use Cases
- Modeling tsunami propagation based on the reported maximum amplitude of about two metres.
- Analyzing earthquake aftershock patterns based on the elliptical area of 12,500 square kilometres.
- Studying geological faulting and underthrusting based on the described fault-plane solution.
- Assessing infrastructure damage from natural disasters based on reported damage to villages, roads, wharfs, and mining installations.
- Identifying seismic hazard zones based on the described aseismic zone considered a likely place for a future major earthquake.
Strengths
- Provides specific earthquake magnitude (MS7.9) and monetary damage estimate ($300,000 Australian).
- Includes detailed geological analysis, such as focal depths (30-70 km) and fault dip (about 37°).
- Describes spatial extent of aftershocks (12,500 square kilometres).
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data is presented in PDF/HTML formats, which may not be readily machine-readable.
Provenance
- Source
- Australian Ocean Data Network
- Time Range
- 20 July 1975
- Freshness
- Last updated 2026-05-05 05:18:38.067813; freshness should be verified.
- Geography
- Northern Solomon Islands, Bougainville/Shortland Islands region, Solomon Sea