Seven beach ridges at Beachmere, Australia, record shoreline changes over the last 1,700 years. Optical dating reveals a period 1,700 -140 years ago when relative sea level was approximately 1 meter higher than present. Progradation rates increased from ~0.16 m/yr to ~0.40 m/yr, with a rapid phase of accretion likely linked to European settlement.
Use Cases
- Modeling historical shoreline progradation rates based on optical ages of beach ridges.
- Analyzing changes in relative sea level over the last 1,700 years based on ridge morphology.
- Investigating the impact of sediment supply changes, such as from European settlement, on coastal accretion patterns.
- Calibrating coastal evolution models using the documented shift from well-spaced to closely-spaced beach ridges.
Strengths
- Covers a specific 1,700-year temporal record of coastal change.
- Provides quantified progradation rates (~0.16 m/yr to ~0.40 m/yr) and sea-level change (approx. 1 m higher).
- Includes optical age data with associated uncertainty ranges for seven distinct beach ridges.
Limitations
- Row count is unknown, which may limit suitability assessment.
- Column-level documentation is absent; field semantics must be inferred after download.
- Data may reflect geographic bias inherent to the single-site study at Beachmere.
Provenance
- Source
- Geoscience Australia Data
- Collection Method
- Optical dating and chronostratigraphic analysis of beach ridge morphology.
- Time Range
- Last 1,700 years
- Freshness
- Last updated 2026-03-25 18:04:38.368985; freshness should be verified.
- Geography
- Beachmere, southeastern Queensland, Australia