Australian Ocean Data Network provides a dataset on the hydrogeology of Niue Island, a raised coral atoll in the South Pacific Ocean with an area of 259 km². The data includes results from drilling, gravity and magnetic surveys, and electrical resistivity depth probes, describing the island's limestone structure and freshwater layer configuration. The dataset was last updated on 2026-06 04.
Use Cases
- Model freshwater lens geometry and safe yield based on described thickness and recharge conditions.
- Analyze subsurface structure based on gravity and magnetic survey results indicating volcanic bedrock depth.
- Study permeability differences in limestone and their impact on freshwater layer configuration.
- Estimate specific capacity and safe pumping rates for wells based on aquifer test results.
Strengths
- Includes specific quantitative measurements: island area of 259 km², freshwater layer thickness from 40-170 m, and safe yield estimates.
- Integrates multiple geophysical survey methods: drilling, gravity, magnetic, and electrical resistivity.
- Provides concrete aquifer performance metrics: specific capacity of about 12 l/s per metre and safe pumping rate of about 8 l/s.
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 and HTML formats, which may require extraction for computational analysis.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Data gathered through drilling, gravity surveys, magnetic surveys, and electrical resistivity depth probes.
- Time Range
- null
- Freshness
- Last updated 2026-06-04 09:02:37.440277; freshness should be verified.
- Geography
- Niue Island, South Pacific Ocean